MCP73223-C2MF [MICROCHIP]
Lithium Iron Phosphate (LiFePO4) Battery Charge Management Controller with Input Overvoltage Protection; 磷酸铁锂锂（LiFePO4 ）电池充电管理控制器具有输入过压保护
| 型号： | MCP73223-C2MF |
| 厂家： | 
MICROCHIP |
| 描述： | Lithium Iron Phosphate (LiFePO4) Battery Charge Management Controller with Input Overvoltage Protection |
| 文件： | 总34页 (文件大小：562K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MCP73123/223
Lithium Iron Phosphate (LiFePO4) Battery Charge
Management Controller with Input Overvoltage Protection
Features
Description
• Complete Linear Charge Management Controller:
- Integrated Input Overvoltage Protection
- Integrated Pass Transistor
The MCP73123/223 is a highly integrated Lithium Iron
Phosphate(LiFePO4) battery charge management
controller for use in space-limited and cost-sensitive
applications. The MCP73123/223 provides specific
charge algorithms for LiFePO4 batteries to achieve
optimal capacity and safety in the shortest charging
time possible. Along with its small physical size, the low
number of external components makes the
- Integrated Current Sense
- Integrated Reverse Discharge Protection
• Constant Current / Constant Voltage Operation
with Thermal Regulation
MCP73123/223
ideally
suitable
for
various
• 4.15V Undervoltage Lockout (UVLO)
• 18V Absolute Maximum Input with OVP:
- 6.5V - MCP73123
applications. The absolute maximum voltage, up to
18V, allows the use of MCP73123/223 in harsh
environments, such as low cost wall wart or voltage
spikes from plug/unplug.
- 13V - MCP73223
• High Accuracy Preset Voltage Regulation
Through Full Temperature Range (-5°C to +55°C):
The MCP73123/223 employs a constant current /
constant voltage charge algorithm. The 3.6V per cell
factory preset reference voltage simplifies design with
2V preconditioning threshold. The fast charge,
constant current value is set with one external resistor
from 130 mA to 1100 mA. The MCP73123/223 also
limits the charge current based on die temperature
during high power or high ambient conditions. This
thermal regulation optimizes the charge cycle time
while maintaining device reliability.
- +0.5% - MCP73123
- +0.6% - MCP73223
• Battery Charge Voltage Options:
- 3.6V - MCP73123
- 7.2V - MCP73223
• Resistor Programmable Fast Charge Current:
- 130 mA - 1100 mA
• Preconditioning of Deeply Depleted Cells:
- Available Options: 10% or Disable
• Integrated Precondition Timer:
- 32 Minutes or Disable
The PROG pin of the MCP73123/223 also serves as
enable pin. When high impedance is applied, the
MCP73123/223 will be in standby mode.
The MCP73123/223 is fully specified over the ambient
temperature range of -40°C to +85°C. The MCP73123/
223 is available in a 10 lead, DFN package.
• Automatic End-of-Charge Control:
- Selectable Minimum Current Ratio:
5%, 7.5%, 10% or 20%
Package Types (Top View)
- Elapse Safety Timer: 4 HR, 6 HR, 8 HR or
Disable
MCP73123/223
3x3 DFN *
• Automatic Recharge:
- Available Options: 95% or Disable
• Factory Preset Charge Status Output:
- On/Off or Flashing
VDD
VDD
PROG
VSS
1
2
10
9
EP
11
VBAT
VBAT
NC
VSS
STAT
NC
3
4
5
8
7
6
• Soft Start
• Temperature Range: -40°C to +85°C
• Packaging: DFN-10 (3 mm x 3 mm)
* Includes Exposed Thermal Pad (EP); see Table 3-1.
Applications
• Low-Cost LiFePO4 Battery Chargers
• Power Tools
• Toys
• Backup Energy Storages
© 2010 Microchip Technology Inc.
DS22191B-page 1
MCP73123/223
Typical Application
MCP73123 Typical Application
3
4
1
VDD
VDD
VBAT
Ac-dc Adapter
2
7
VBAT
+
-
4.7 µF
4.7 µF
1-Cell
LiFePO4
Battery
10
PROG
STAT
NC
1 kΩ
1.15 kΩ
5
6
9
8
VSS
VSS
NC
TABLE 1:
AVAILABLE FACTORY PRESET OPTIONS
Pre-
conditioning
Charge Current
Pre-
conditioning
Threshold
End-of-
Charge
Control
Charge
Voltage
Precondition
Timer
Elapse
Timer
Automatic
Recharge
Output
Status
OVP
3.6V
6.5V
13V
Disable / 10%
2V
Disable /
32 Minimum
Disable / 4 HR / 5% / 7.5% /
6 HR / 8 HR 10% / 20%
Disable / 4 HR / 5% / 7.5% /
6 HR / 8 HR 10% / 20%
No /
Yes
Type 1 /
Type 2
7.2V
Disable / 10%
4V
Disable /
32 Minimum
No /
Yes
Type 1 /
Type 2
Note 1:
I
REG: Regulated fast charge current.
REG: Regulated charge voltage.
PREG/IREG: Preconditioning charge current; ratio of regulated fast charge current.
2:
3:
V
I
4: ITERM/IREG: End-of-Charge control; ratio of regulated fast charge current.
5:
6:
V
V
RTH/VREG: Recharge threshold; ratio of regulated battery voltage.
PTH/VREG: Preconditioning threshold voltage
TABLE 2:
STANDARD SAMPLE OPTIONS
Part
VREG
OVP IPREG/IREG Pre-charge Elapse ITERM/IREG VRTH/VREG VPTH/VREG Output
Number
Timer
32 Min.
32 Min.
Timer
6 HR
6 HR
Status
Type 1
Type 1
MCP73123-22S/MF
MCP73223-C2S/MF
3.6V
7.2V
6.5V
13V
10%
10%
10%
10%
95%
95%
2V
4V
Note 1: Customers should contact their distributor, representatives or field application engineer (FAE) for support and sample.
Local sales offices are also available to help customers. A listing of sales offices and locations is included in the back of
this document. Technical support is available through the web site at: http//support.microchip.com
DS22191B-page 2
© 2010 Microchip Technology Inc.
MCP73123/223
Functional Block Diagram
VOREG
Direction
Control
VBAT
VDD
Current
Limit
+
-
VREF
PROG
CA
+
Reference,
Bias, UVLO,
and SHDN
VREF (1.21V)
-
+
VOREG
UVLO
-
-
Precondition
+
Term
-
+
Charge
Control,
Charge
VA
STAT
+
Timer,
-
and
Status
Logic
VSS
-
6.5V / 13V
VDD
+
Input OverVP
-
95% VREG
-
+
110°C
TSD
Thermal Regulation
VBAT
+
*Recharge
*Only available on selected options
© 2010 Microchip Technology Inc.
DS22191B-page 3
MCP73123/223
NOTES:
DS22191B-page 4
© 2010 Microchip Technology Inc.
MCP73123/223
† Notice: Stresses above those listed under “Maximum
Ratings” may cause permanent damage to the device. This is
a stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational listings of this specification is not implied.
Exposure to maximum rating conditions for extended periods
may affect device reliability.
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings†
V
V
................................................................................18.0V
DD
PROG ..............................................................................6.0V
All Inputs and Outputs w.r.t. VSS ............... -0.3 to (VDD+0.3)V
Maximum Junction Temperature, TJ ............Internally Limited
Storage temperature .....................................-65°C to +150°C
ESD protection on all pins
Human Body Model (1.5 kΩ in Series with 100 pF).......≥ 4 kV
Machine Model (200pF, No Series Resistance)..............300V
DC CHARACTERISTICS
Electrical Specifications: Unless otherwise indicated, all limits apply for VDD= [VREG(Typical) + 0.3V] to 12V,
TA = -40°C to +85°C. Typical values are at +25°C, VDD = [VREG (Typical) + 1.0V]
Parameters
Supply Input
Sym
Min
Typ
Max
Units
Conditions
Input Voltage Range
Operating Supply Voltage
Operating Supply Voltage
Supply Current
VDD
VDD
VDD
ISS
4
—
—
16
6.5
V
V
4.2
4.2
—
MCP73123
MCP73223
—
13.0
5.5
V
4
µA
µA
µA
µA
Shutdown (VDD ≤ VBAT - 150 mV)
Charging
—
700
30
50
1500
100
150
—
Standby (PROG Floating)
—
Charge Complete; No Battery;
VDD < VSTOP
Battery Discharge Current
Output Reverse Leakage
Current
IDISCHARGE
—
—
0.5
0.5
2
2
µA
µA
Standby (PROG Floating)
Shutdown (VDD ≤ VBAT
,
or VDD < VSTOP
)
—
6
17
µA
Charge Complete; VDD is present
Undervoltage Lockout
UVLO Start Threshold
UVLO Stop Threshold
UVLO Hysteresis
VSTART
VSTOP
VHYS
4.10
4.00
—
4.15
4.05
100
4.25
4.15
—
V
V
mV
Overvoltage Protection
OVP Start Threshold
OVP Start Threshold
OVP Hysteresis
VOVP
VOVP
6.4
12.8
—
6.5
13
6.6
13.2
—
V
V
MCP73123
MCP73223
VOVPHYS
150
mV
Voltage Regulation (Constant Voltage Mode)
Regulated Output Voltage
VREG
3.582
3.60
3.618
V
TA= -5°C to +55°C, IOUT = 50 mA
- MCP73123
Output Voltage Tolerance
Regulated Output Voltage
VRTOL
VREG
-0.5
—
+0.5
%
V
TA= -5°C to +55°C
7.157
7.20
7.243
TA= -5°C to +55°C, IOUT = 50 mA
- MCP73123
Output Voltage Tolerance
Line Regulation
VRTOL
-0.6
—
—
+0.6
0.20
%
TA= -5°C to +55°C
|(ΔVBAT
BAT)/ΔVDD|
/
0.05
%/V VDD = [VREG(Typical)+1V] to 6V
- MCP73123
V
V
DD = [VREG(Typical)+1V] to 12V
- MCP73223
OUT = 50 mA
IOUT = 50 mA - 150 mA
DD = [VREG(Typical)+1V]
I
Load Regulation
|ΔVBAT/VBAT
|
—
0.05
0.20
%
V
Note 1: Not production tested. Ensured by design.
© 2010 Microchip Technology Inc.
DS22191B-page 5
MCP73123/223
DC CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise indicated, all limits apply for VDD= [VREG(Typical) + 0.3V] to 12V,
TA = -40°C to +85°C. Typical values are at +25°C, VDD = [VREG (Typical) + 1.0V]
Parameters
Sym
Min
Typ
Max
Units
Conditions
Supply Ripple Attenuation
PSRR
—
—
-46
-30
—
—
dB
dB
IOUT = 20 mA, 10 Hz to 1 kHz
IOUT = 20 mA, 10 Hz to 10 kHz
Battery Short Protection
BSP Start Threshold
BSP Start Threshold
BSP Hysteresis
VSHORT
VSHORT
VBSPHYS
ISHORT
—
—
—
—
1.45
2.90
150
25
—
—
—
—
V
V
MCP73123
MCP73223
mV
mA
BSP Regulation Current
Current Regulation (Fast Charge, Constant-Current Mode)
Fast Charge Current
Regulation
IREG
130
117
900
—
1100
143
mA TA=-5°C to +55°C
mA PROG = 10 kΩ
mA PROG = 1.1 kΩ
130
1000
1100
Preconditioning Current Regulation (Trickle Charge Constant Current Mode)
Precondition Current Ratio
IPREG / IREG
—
10
—
%
PROG = 1 kΩ to 10 kΩ
TA=-5°C to +55°C
—
1.9
3.8
—
100
2.0
4.0
100
—
2.1
4.2
—
%
V
No Preconditioning
Precondition Voltage
Threshold Ratio
VPTH
VPTH
MCP73123, VBAT Low-to-High
MCP73223, VBAT Low-to-High
V
Precondition Hysteresis
VPHYS
mV VBAT High-to-Low (Note 1)
Charge Termination
Charge Termination
Current Ratio
ITERM / IREG
3.7
5.6
7.5
15
5
6.3
9.4
12.5
25
%
%
PROG = 1 kΩ to 10 kΩ
TA=-5°C to +55°C
7.5
10
20
Automatic Recharge
Recharge Voltage
Threshold Ratio
VRTH / VREG
93
—
95
0
97
—
VBAT High-to-Low
No Automatic Recharge
Pass Transistor ON-Resistance
ON-Resistance
RDSON
—
350
—
mΩ VDD = 4.5V, TJ = 105°C (Note 1)
Status Indicator - STAT
Sink Current
ISINK
VOL
ILK
—
—
—
20
0.2
35
0.5
1
mA
Low Output Voltage
Input Leakage Current
PROG Input
V
ISINK = 4 mA
0.001
μA
High Impedance, VDD on pin
Charge Impedance Range
Shutdown Impedance
PROG Voltage Range
Automatic Power Down
RPROG
RPROG
VPROG
1
—
0
—
200
—
21
—
5
kΩ
kΩ
V
Impedance for Shutdown
Automatic Power Down
Entry Threshold
VPDENTRY
VPDEXIT
VBAT
10 mV
+
VBAT
50 mV
+
—
V
V
VDD Falling
VDD Rising
Automatic Power Down
Exit Threshold
—
VBAT
150 mV
+
VBAT +
250 mV
Thermal Shutdown
Die Temperature
TSD
—
—
150
10
—
—
°C
°C
Die Temperature
Hysteresis
TSDHYS
Note 1: Not production tested. Ensured by design.
DS22191B-page 6
© 2010 Microchip Technology Inc.
MCP73123/223
AC CHARACTERISTICS
Electrical Specifications: Unless otherwise specified, all limits apply for VDD= [VREG(Typical)+0.3V] to 6V, TA=-40°C to +85°C.
Typical values are at +25°C, VDD= [VREG(Typical)+1.0V]
Parameters
Sym
Min
Typ
Max
Units
Conditions
Elapsed Timer
Elapsed Timer Period
tELAPSED
—
0
—
Hours
Hours
Hours
Hours
Timer Disabled
3.6
5.4
7.2
4.0
6.0
8.0
4.4
6.6
8.8
Preconditioning Timer
Preconditioning Timer Period
tPRECHG
—
0
—
Hours
Hours
Disabled Timer
0.4
0.5
0.6
Status Indicator
Status Output turn-off
tOFF
tON
—
—
—
—
500
500
µs
ISINK = 1 mA to 0 mA
(Note 1)
Status Output turn-on,
ISINK = 0 mA to 1 mA
(Note 1)
Note 1: Not production tested. Ensured by design.
TEMPERATURE SPECIFICATIONS
Electrical Specifications: Unless otherwise indicated, all limits apply for VDD = [VREG (Typical) + 0.3V] to 6V.
Typical values are at +25°C, VDD = [VREG (Typical) + 1.0V]
Parameters
Temperature Ranges
Sym
Min
Typ
Max
Units
Conditions
Specified Temperature Range
Operating Temperature Range
Storage Temperature Range
Thermal Package Resistances
Thermal Resistance, DFN-10 (3x3)
TA
TJ
TA
-40
-40
-65
—
—
—
+85
+125
+150
°C
°C
°C
θJA
—
43
—
°C/W
4-Layer JC51-7 Standard Board,
Natural Convection
© 2010 Microchip Technology Inc.
DS22191B-page 7
MCP73123/223
NOTES:
DS22191B-page 8
© 2010 Microchip Technology Inc.
MCP73123/223
2.0
TYPICAL PERFORMANCE CURVES
Note:
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
Note: Unless otherwise indicated, VDD = [VREG(Typical) + 1V], IOUT = 50 mA and TA= +25°C, Constant-voltage mode.
7.24
3.66
3.65
3.64
3.63
3.62
3.61
3.60
3.59
3.58
3.57
3.56
3.55
7.23
7.22
7.21
7.20
7.19
7.18
7.17
7.16
ILOAD = 150 mA
BAT = 3.6V
ILOAD = 50 mA
VDD = 9.2V
V
TA = +25°C
4.5
4.8
5.1
5.4
5.7
6.0
-5
0
5
10 15 20 25 30 35 40 45 50 55
Ambient Temperature (°C)
Supply Voltage (V)
FIGURE 2-1:
Battery Regulation Voltage
FIGURE 2-4:
(V
Battery Regulation Voltage
(V ) vs. Supply Voltage (V ).
) vs. Ambient Temperature (T ).
BAT
DD
BAT
A
3.620
3.615
3.610
3.605
3.600
3.595
3.590
3.585
3.580
3.65
3.64
3.63
3.62
3.61
3.60
3.59
3.58
3.57
3.56
3.55
ILOAD = 50 mA
BAT = 3.6V
V
ILOAD = 150 mA
DD = 5.2V
TA = +25°C
V
4.5
4.8
5.1
5.4
5.7
6.0
-5
0
5
10 15 20 25 30 35 40 45 50 55
Ambient Temperature (°C)
Supply Voltage (V)
FIGURE 2-2:
Battery Regulation Voltage
FIGURE 2-5:
(V
Battery Regulation Voltage
(V ) vs. Supply Voltage (V ).
) vs. Ambient Temperature (T ).
BAT
DD
BAT
A
1200
1100
1000
900
800
700
600
500
400
300
200
100
0
7.24
7.23
7.22
7.21
7.20
7.19
7.18
7.17
7.16
VDD = 5.2V
TA = +25°C
ILOAD = 50 mA
VBAT = 7.2V
T
A = +25°C
8.4
9.0
9.6
10.2
10.8
11.4
12.0
1 2 3 4 5 6 7 8 9 1011121314151617181920
Supply Voltage (V)
Programming Resistor (kΩ)
FIGURE 2-3:
Battery Regulation Voltage
FIGURE 2-6: Charge Current (I
Programming Resistor (R ).
PROG
) vs.
OUT
(V ) vs. Supply Voltage (V ).
BAT
DD
© 2010 Microchip Technology Inc.
DS22191B-page 9
MCP73123/223
TYPICAL PERFORMANCE CURVES (CONTINUED)
Note: Unless otherwise indicated, VDD = [VREG(Typical) + 1V], IOUT = 10 mA and TA= +25°C, Constant-voltage mode.
950
930
910
150
144
138
890
870
850
830
810
790
770
750
132
126
120
114
108
102
96
RPROG = 10 kΩ
TA = +25°C
RPROG = 1.33 kΩ
T
A = +25°C
90
4.5
4.8
5.1
5.4
5.7
6.0
4.5
4.8
5.1
5.4
5.7
6.0
Supply Voltage (V)
Supply Voltage (V)
FIGURE 2-7:
Programming Resistor (R
Charge Current (I
) vs.
FIGURE 2-10:
Programming Resistor (R
Charge Current (I
) vs.
OUT
OUT
OUT
OUT
).
).
PROG
PROG
675
655
635
615
595
575
555
535
950
930
910
890
870
850
830
810
515 RPROG = 2 kΩ
RPROG = 1.33 kΩ
VDD = 5.2V
790
770
750
T
A = +25°C
495
475
4.5
4.8
5.1
5.4
5.7
6.0
-5
5
15
25
35
45
55
Supply Voltage (V)
Ambient Temperature (°C)
FIGURE 2-8:
Programming Resistor (R
Charge Current (I
) vs.
FIGURE 2-11:
Ambient Temperature (T ).
Charge Current (I
) vs.
OUT
).
PROG
A
9.0
8.0
7.0
6.0
350
330
310
290
270
250
230
210
End of Charge
5.0
4.0
3.0
2.0
1.0
0.0
-1.0
VDD < VBAT
VDD < VSTOP
RPROG = 5 kΩ
190
170
150
T
A = +25°C
4.5
4.8
5.1
5.4
5.7
6.0
-5.0
5.0
15.0
25.0
35.0
45.0
55.0
Supply Voltage (V)
Ambient Temperature (°C)
FIGURE 2-9:
Charge Current (I
) vs.
FIGURE 2-12:
Output Leakage Current
Programming Resistor (R
).
(I
) vs. Ambient Temperature (T ).
PROG
DISCHARGE
A
DS22191B-page 10
© 2010 Microchip Technology Inc.
MCP73123/223
TYPICAL PERFORMANCE CURVES (CONTINUED)
Note: Unless otherwise indicated, VDD = [VREG(Typical) + 1V], IOUT = 10 mA and TA= +25°C, Constant-voltage mode.
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
1
Thermal Regulation
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
Charge Current
Input Voltage
Battery Voltage
VDD = 5V
PROG = 1 kΩ
1100 mAh LiFePO4 Battery
R
0
10
20
30
40
50
60
70
Time (Minutes)
FIGURE 2-13:
Overvoltage Protection Start
FIGURE 2-16:
Complete Charge Cycle
(50 ms/Div).
(1100 mAh LiFePO Battery).
4
Input Voltage
Source Voltage (V)
Output Ripple (mV)
Battery Voltage
Charge Current
FIGURE 2-14:
Overvoltage Protection Stop
FIGURE 2-17:
Line Transient Response
(50 ms/Div).
(I = 10 mA, Source Voltage: 2V/Div, Output
LOAD
Ripple: 100 mV/Div, Time: 100 µs/Div).
Output Ripple (mV)
Output Current (mA)
Source Voltage (V)
Output Ripple (mV)
FIGURE 2-15:
Load Transient Response
FIGURE 2-18:
Line Transient Response
(I
= 50 mA, Output Ripple: 100 mV/Div,
(I = 100 mA, Source Voltage: 2V/Div, Output
LOAD
LOAD
Output Current: 50 mA/Div, Time: 100 µs/Div).
Ripple: 100 mV/Div, Time: 100 µs/Div).
© 2010 Microchip Technology Inc.
DS22191B-page 11
MCP73123/223
NOTES:
DS22191B-page 12
© 2010 Microchip Technology Inc.
MCP73123/223
3.0
PIN DESCRIPTION
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
PIN FUNCTION TABLE
MCP73123/223
Symbol
I/O
Description
DFN-10
1, 2
3, 4
5, 6
7
VDD
VBAT
NC
I
Battery Management Input Supply
I/O Battery Charge Control Output
—
O
No Connection
STAT
VSS
Battery Charge Status Output
8, 9
10
—
Battery Management 0V Reference
PROG
EP
I/O Battery Charge Current Regulation Program and Charge Control Enable
Exposed Pad
11
—
3.1
Battery Management Input Supply
(VDD
3.5
Battery Management 0V Reference
(VSS
)
)
A supply voltage of [VREG (Typical) + 0.3V] to 6.0V is
recommended for MCP73123, while a supply voltage
of [VREG (Typical) + 0.3V] to 12.0V is recommended for
MCP73223. Bypass to VSS with a minimum of 1 µF.
The VDD pin is rated 18V absolute maximum to prevent
sudden rise of input voltage from spikes or low cost
ac-dc wall adapter.
Connect to the negative terminal of the battery and
input supply.
3.6
Current Regulation Set (PROG)
The fast charge current is set by placing a resistor from
PROG to VSS during constant current (CC) mode.
PROG pin also serves as charge control enable.
When a typical 200 kΩ impedance is applied to PROG
pin, the MCP73123/223 is disabled until the high
impedance is removed. Refer to Section 5.5
“Constant Current MODE - Fast Charge” for details.
3.2
Battery Charge Control Output
(VBAT
)
Connect to the positive terminal of the battery. Bypass
to VSS with a minimum of 1 µF to ensure loop stability
when the battery is disconnected. The MCP73123 is
designed to provide 3.6V battery regulation voltage for
LiFePO4 batteries. Undercharge may occur if a typical
Li-Ion or Li-Poly battery is used.
3.7
Exposed Pad (EP)
The Exposed Thermal Pad (EP) shall be connected to
the exposed copper area on the Printed Circuit Board
(PCB) for the thermal enhancement. Additional vias on
the copper area under the MCP73123/223 device can
improve the performance of heat dissipation and
simplify the assembly process.
3.3
No Connect (NC)
No connect.
3.4
Status Output (STAT)
STAT is an open-drain logic output for connection to an
LED for charge status indication in stand-alone
applications. Alternatively, a pull-up resistor can be
applied for interfacing to a host microcontroller. Refer to
Table 5-1 for a summary of the status output during a
charge cycle.
© 2010 Microchip Technology Inc.
DS22191B-page 13
MCP73123/223
NOTES:
DS22191B-page 14
© 2010 Microchip Technology Inc.
MCP73123/223
4.0
DEVICE OVERVIEW
The MCP73123/223 are simple, but fully integrated
linear charge management controllers. Figure 4-1
depicts the operational flow algorithm.
SHUTDOWN MODE
< V
V
DD
UVLO
V
< V
PD
DD
or
PROG > 200 kΩ
STAT = HI-Z
V
< V
PTH
BAT
TIMER FAULT
No Charge Current
STAT = Flashing (Op.1)
STAT = Hi-Z (Op.2)
Timer Suspended
V
< V
OVP
DD
PRECONDITIONING MODE
Timer Expired
Charge Current = I
PREG
STAT = LOW
Timer Reset
Timer Enable
V
> V
OVP
DD
V
> V
OVP
V
> V
PTH
DD
BAT
V
> V
PTH
BAT
FAST CHARGE MODE
OVERVOLTAGE PROTECTION
Charge Current = I
Timer Expired
< V
REG
No Charge Current
STAT = Hi-Z
Timer Suspended
STAT = LOW
Timer Reset
Timer Enabled
TIMER FAULT
No Charge Current
V
BAT
RTH
STAT = Flashing (Op.1)
STAT = Hi-Z (Op.2)
Timer Suspended
V
< V
OVP
V
= V
REG
DD
BAT
V
> V
OVP
DD
V
< V
OVP
DD
CONSTANT VOLTAGE MODE
Charge Voltage = V
REG
STAT = LOW
V
< I
TERM
BAT
Die Temperature < T
SDHYS
CHARGE COMPLETE MODE
V
> V
SHORT
BAT
Charge Mode Resume
No Charge Current
Charge Mode Resume
STAT = HI-Z
Timer Reset
Die Temperature > T
SD
V
< V
SHORT
BAT
TEMPERATURE FAULT
No Charge Current
BATTERY SHORT PROTECTION
Charge Current = I
STAT = Flashing (Op.1)
SHORT
STAT = Flashing (Op.1)
STAT = Hi-Z (Op.2)
Timer Suspended
STAT = Hi-Z (Op.2)
Timer Suspended
FIGURE 4-1:
The MCP73123/223 Flow Chart.
© 2010 Microchip Technology Inc.
DS22191B-page 15
MCP73123/223
NOTES:
DS22191B-page 16
© 2010 Microchip Technology Inc.
MCP73123/223
5.3.2
BATTERY CHARGE CONTROL
5.0
5.1
DETAILED DESCRIPTION
Undervoltage Lockout (UVLO)
OUTPUT (V
)
BAT
The battery charge control output is the drain terminal
of an internal P-channel MOSFET. The MCP73123/223
provides constant current and voltage regulation to the
battery pack by controlling this MOSFET in the linear
region. The battery charge control output should be
connected to the positive terminal of the battery pack.
An internal undervoltage lockout (UVLO) circuit
monitors the input voltage and keeps the charger in
shutdown mode until the input supply rises above the
UVLO threshold. In the event a battery is present when
the input power is applied, the input supply must rise
approximately 150 mV above the battery voltage
before the MCP73123/223 becomes operational.
5.3.3
BATTERY DETECTION
The MCP73123/223 detects the battery presence with
charging of the output capacitor. The charge flow will
initiate when the voltage on VBAT is pulled below the
The UVLO circuit places the device in shutdown mode
if the input supply falls to approximately 150 mV above
the battery voltage.The UVLO circuit is always active.
At any time, the input supply is below the UVLO
threshold or approximately 150 mV of the voltage at the
VBAT pin, the MCP73123/223 device is placed in a
shutdown mode.
VRECHARGE threshold.
Refer
to
Section 1.0
“Electrical Characteristics” for VRECHARGE values.
The value will be the same for non-rechargeable
device.
When VBAT > VREG + Hysteresis, the charge will be
suspended or not started, depending on the condition
to prevent over charge that may occur.
5.2
Overvoltage Protection (OVP)
An internal overvoltage protection (OVP) circuit
monitors the input voltage and keeps the charger in
shutdown mode when the input supply rises above
the OVP threshold. The hysteresis of OVP is
approximately 150 mV for the MCP73123/223 device.
5.4
Preconditioning
If the voltage at the VBAT pin is less than the
preconditioning threshold, the MCP73123/223 device
enters a preconditioning mode. The preconditioning
threshold is factory set. Refer to Section 1.0
“Electrical Characteristics” for preconditioning
threshold options.
The MCP73123/223 device is operational between
UVLO and OVP threshold. The OVP circuit is also
recognized as overvoltage lockout (OVLO).
In this mode, the MCP73123/223 device supplies 10%
of the fast charge current (established with the value of
the resistor connected to the PROG pin) to the battery.
5.3
Charge Qualification
When the input power is applied, the input supply must
rise 150 mV above the battery voltage before the
MCP73123/223 becomes operational.
When the voltage at the VBAT pin rises above the
preconditioning threshold, the MCP73123/223 device
enters the constant current (fast charge) mode.
The automatic power down circuit places the device in
a shutdown mode if the input supply falls to within
+50 mV of the battery voltage.
Note:
5.4.1
The MCP73123/223 also offer options
with no preconditioning.
The automatic circuit is always active. At any time the
input supply is within +50 mV of the voltage at the
VBAT pin, the MCP73123/223 is placed in a shutdown
mode.
TIMER EXPIRED DURING
PRECONDITIONING MODE
If the internal timer expires before the voltage threshold
is reached for fast charge mode, a timer fault is
indicated and the charge cycle terminates. The
MCP73123/223 device remains in this condition until
the battery is removed or input power is cycled. If the
battery is removed, the MCP73123/223 device enters
the Standby mode where it remains until a battery is
reinserted.
For a charge cycle to begin, the automatic power
down conditions must be met and the charge enable
input must be above the input high threshold.
Note:
In order to extend the battery cycle life, the
charge will initiate only when battery
voltage is below 3.4V per cell.
5.3.1
BATTERY MANAGEMENT INPUT
Note:
The typical preconditioning timer for
MCP73123/223 is 32 minutes. The
MCP73123/223 also offers options with no
preconditioning timer.
SUPPLY (V
)
DD
The VDD input is the input supply to the MCP73123/
223. The MCP73123/223 automatically enters
a
Power-down mode if the voltage on the VDD input falls
to within +50 mV of the battery voltage. This feature
prevents draining the battery pack when the VDD
supply is not present.
© 2010 Microchip Technology Inc.
DS22191B-page 17
MCP73123/223
Constant current mode is maintained until the voltage
at the VBAT pin reaches the regulation voltage, VREG
When constant current mode is invoked, the internal
timer is reset.
5.5
Constant Current MODE - Fast
Charge
.
During the constant current mode, the programmed
charge current is supplied to the battery or load.
5.5.1
TIMER EXPIRED DURING
CONSTANT CURRENT - FAST
CHARGE MODE
The charge current is established using a single
resistor from PROG to VSS. The program resistor and
the charge current are calculated using Equation 5-1:
If the internal timer expires before the recharge voltage
threshold is reached, a timer fault is indicated and the
charge cycle terminates. The MCP73123/223 device
remains in this condition until the battery is removed. If
the battery is removed or input power is cycled, the
MCP73123/223 device enters the Stand-by mode
where it remains until a battery is reinserted.
EQUATION 5-1:
IREG = 1104 × R–0.93
Where:
RPROG
IREG
=
=
kilo-ohms (kΩ)
milliampere (mA)
5.6
Constant Voltage Mode
When the voltage at the VBAT pin reaches the
regulation voltage, VREG, constant voltage regulation
begins. The regulation voltage is factory set to 3.6V for
single cell with a tolerance of ±0.5% or 7.2V for dual cell
with a tolerance of ±0.6%.
EQUATION 5-2:
RPROG = 10(log1104) ⁄ (–0.93)
Where:
RPROG
IREG
=
=
kilo-ohms (kΩ)
5.7
Charge Termination
milliampere (mA)
The charge cycle is terminated when, during constant
voltage mode, the average charge current diminishes
below a threshold established with the value of 5%,
7.5%, 10% or 20% of fast charge current or internal
timer has expired. A 1 ms filter time on the termination
comparator ensures that transient load conditions do
not result in premature charge cycle termination. The
timer period is factory set and can be disabled. Refer to
Section 1.0 “Electrical Characteristics” for timer
period options.
Table 5-1 provides commonly seen E96 (1%) and E24
(5%) resistors for various charge current to reduce
design time.
TABLE 5-1:
Charge
RESISTOR LOOKUP TABLE
Recommended Recommended
Current (mA) E96 Resistor (Ω) E24 Resistor (Ω)
130
150
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1000
1100
10k
10k
8.45k
6.20k
4.99k
4.02k
3.40k
3.00k
2.61k
2.32k
2.10k
1.91k
1.78k
1.62k
1.50k
1.40k
1.33k
1.24k
1.18k
1.10k
1.00k
8.20k
6.20k
5.10k
3.90k
3.30k
3.00k
2.70k
2.37k
2.20k
2.00k
1.80k
1.60k
1.50k
1.50k
1.30k
1.20k
1.20k
1.10k
1.00k
5.8
Automatic Recharge
The MCP73123/223 device continuously monitors the
voltage at the VBAT pin in the charge complete mode. If
the voltage drops below the recharge threshold,
another charge cycle begins and current is once again
supplied to the battery or load. The recharge threshold
is factory set. Refer to Section 1.0 “Electrical
Characteristics” for recharge threshold options.
Note:
The MCP73123/223 also offer options
with no automatic recharge.
For the MCP73123/223 device with no recharge option,
the MCP73123/223 will go into standby mode when the
termination condition is met. The charge will not restart
until the following conditions have been met:
• Battery is removed from the system and inserted
again
• VDD is removed and plugged in again
•
RPROG is disconnected (or high impedance) and
reconnected
DS22191B-page 18
© 2010 Microchip Technology Inc.
MCP73123/223
5.9
Thermal Regulation
5.11 Status Indicator
The MCP73123/223 shall limit the charge current
based on the die temperature. The thermal regulation
optimizes the charge cycle time while maintaining
device reliability. Figure 5-1 depicts the thermal
regulation for the MCP73123/223 device. Refer to
Section 1.0 “Electrical Characteristics” for thermal
package resistances and Section 6.1.1.2 “Thermal
Considerations” for calculating power dissipation.
.
The charge status outputs are open-drain outputs with
two different states: Low (L), and High Impedance
(Hi-Z). The charge status outputs can be used to
illuminate LEDs. Optionally, the charge status outputs
can be used as an interface to a host microcontroller.
Table 5-2 summarizes the state of the status outputs
during a charge cycle.
TABLE 5-2:
STATUS OUTPUTS
CHARGE CYCLE
600
500
400
300
200
STAT
STATE
Shutdown
Standby
Hi-Z
Hi-Z
L
Preconditioning
Constant Current Fast
Charge
L
VDD = 5.2V
100
Constant Voltage
L
RPROG = 2 kΩ
Charge Complete - Standby
Temperature Fault
Hi-Z
0
1.6 second 50% D.C.
Flashing (Type 2)
Hi-Z (Type 1)
25 35 45 55 65 75 85 95 105 115 125 135 145
Junction Temperature (°C)
FIGURE 5-1:
Thermal Regulation.
Timer Fault
1.6 second 50% D.C.
Flashing (Type 2)
Hi-Z (Type 1)
5.10 Thermal Shutdown
Preconditioning Timer Fault
1.6 second 50% D.C.
Flashing (Type 2)
Hi-Z (Type 1)
The MCP73123/223 suspends charge if the die
temperature exceeds +150°C. Charging will be
resumed when the die temperature has cooled by
approximately 10°C. The thermal shutdown is a
secondary safety feature in the event that there is a
failure within the thermal regulation circuitry.
5.12 BATTERY SHORT PROTECTION
Once a lithium iron phosphate battery is detected, an
internal battery short protection (BSP) circuit starts
monitoring the battery voltage. When VBAT falls below
a typical 1.7V battery short protection threshold voltage
per cell, the charging behavior is postponed.
25 mA (typical) detection current is supplied for
recovering from battery short condition.
Preconditioning mode resumes when VBAT raises
above battery short protection threshold. The battery
voltage must rise approximately 150 mV above the
battery short protection voltage before the MCP73123/
223 device becomes operational.
© 2010 Microchip Technology Inc.
DS22191B-page 19
MCP73123/223
NOTES:
DS22191B-page 20
© 2010 Microchip Technology Inc.
MCP73123/223
6.0
APPLICATIONS
The MCP73123/223 is designed to operate in
conjunction with host microcontroller or in
a
stand-alone applications. The MCP73123/223
provides the preferred charge algorithm for lithium
iron phosphate cells Constant-current followed by
Constant-voltage. Figure 6-1 depicts
a
typical
stand-alone application circuit, while Figure 6-2
depicts the accompanying charge profile.
MCP73123 Typical Application
3
1
VDD
VDD
VBAT
Ac-dc Adapter
4
2
7
VBAT
+
4.7 µF
4.7 µF
1-Cell
10
PROG
STAT
NC
LiFePO4
Battery
1 kΩ
1.15 kΩ
-
5
6
9
8
VSS
VSS
NC
FIGURE 6-1:
Typical Application Circuit.
7.0
6.0
5.0
4.0
3.0
1
Thermal Regulation
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
2.0
VDD = 5V
R
PROG = 1 kΩ
1100 mAh LiFePO4 Battery
1.0
0.0
0
10
20
30
40
50
60
70
Time (Minutes)
FIGURE 6-2:
Typical Charge Profile for
Single-Cell LiFePO Battery).
4
© 2010 Microchip Technology Inc.
DS22191B-page 21
MCP73123/223
Power dissipation with a 5V, ±10% input voltage
source, 500 mA ±10% and preconditioning threshold
voltage at 2V is:
6.1
Application Circuit Design
Due to the low efficiency of linear charging, the most
important factors are thermal design and cost, which
are a direct function of the input voltage, output current
and thermal impedance between the battery charger
and the ambient cooling air. The worst-case situation is
when the device has transitioned from the
preconditioning mode to the constant-current mode. In
this situation, the battery charger has to dissipate the
maximum power. A trade-off must be made between
the charge current, cost and thermal requirements of
the charger.
EQUATION 6-2:
PowerDissipation = (5.5V – 2V) × 550mA = 1.925W
This power dissipation with the battery charger in the
DFN-10 package will result approximately 83°C above
room temperature.
6.1.1.3
External Capacitors
6.1.1
COMPONENT SELECTION
The MCP73123/223 is stable with or without a battery
load. In order to maintain good AC stability in the
Constant-voltage mode, a minimum capacitance of
Selection of the external components in Figure 6-1 is
crucial to the integrity and reliability of the charging
system. The following discussion is intended as a guide
for the component selection process.
1 µF is recommended to bypass the VBAT pin to VSS
.
This capacitance provides compensation when there is
no battery load. In addition, the battery and
interconnections appear inductive at high frequencies.
These elements are in the control feedback loop during
Constant-voltage mode. Therefore, the bypass
capacitance may be necessary to compensate for the
inductive nature of the battery pack.
6.1.1.1
Charge Current
The recommended fast charge current should be
obtained from battery manufacturer. For example, a
1000 mAh battery pack with 2C preferred fast charge
current has a charge current of 1000 mA. Charging at
this rate provides the shortest charge cycle times
without degradation to the battery pack performance or
life.
A minimum of 16V rated 1 µF, is recommended to apply
for output capacitor and a minimum of 25V rated 1 µF,
is recommended to apply for input capacitor for typical
applications.
Note:
Please consult with your battery supplier
or refer to battery data sheet for preferred
charge rate.
TABLE 6-1:
MLCC CAPACITOR EXAMPLE
MLCC
Capacitors
Temperature
Tolerance
Range
6.1.1.2
Thermal Considerations
X7R
X5R
-55°C to +125°C
-55°C to +85°C
±15%
±15%
The worst-case power dissipation in the battery
charger occurs when the input voltage is at the
maximum and the device has transitioned from the
Preconditioning mode to the Constant-current mode.
In this case, the power dissipation is:
Virtually any good quality output filter capacitor can be
used, independent of the capacitor’s minimum
Effective Series Resistance (ESR) value. The actual
value of the capacitor (and its associated ESR)
depends on the output load current. A 1 µF ceramic,
tantalum or aluminum electrolytic capacitor at the
output is usually sufficient to ensure stability.
EQUATION 6-1:
PowerDissipation = (V
– V
) × I
PTHMIN REGMAX
DDMAX
Where:
VDDMAX
IREGMAX
VPTHMIN
=
=
=
the maximum input voltage
6.1.1.4
Reverse-Blocking Protection
the maximum fast charge current
The MCP73123/223 provides protection from a faulted
or shorted input. Without the protection, a faulted or
shorted input would discharge the battery pack through
the body diode of the internal pass transistor.
the minimum transition threshold
voltage
DS22191B-page 22
© 2010 Microchip Technology Inc.
MCP73123/223
6.2
PCB Layout Issues
For optimum voltage regulation, place the battery pack
as close as possible to the device’s VBAT and VSS pins,
recommended to minimize voltage drops along the
high current-carrying PCB traces.
If the PCB layout is used as a heatsink, adding many
vias in the heatsink pad can help conduct more heat to
the backplane of the PCB, thus reducing the maximum
junction temperature. Figure 6-4 and Figure 6-5 depict
a typical layout with PCB heatsinking.
FIGURE 6-5:
Typical Layout (Bottom).
MCP73X23EV-LFP
FIGURE 6-3:
Typical Layout (Top).
FIGURE 6-4:
Typical Layout (Top Metal).
© 2010 Microchip Technology Inc.
DS22191B-page 23
MCP73123/223
NOTES:
DS22191B-page 24
© 2010 Microchip Technology Inc.
MCP73123/223
7.0
7.1
PACKAGING INFORMATION
Package Marking Information
10-Lead DFN (3x3)
Example:
Standard *
Part Number
MCP73123-22SI/MF
MCP73223-C2SI/MF
XXXX
77HI
0923
Code
YYWW
NNN
77HI
X7HI
256
Legend: XX...X Customer-specific information
Y
Year code (last digit of calendar year)
YY
WW
NNN
Year code (last 2 digits of calendar year)
Week code (week of January 1 is week ‘01’)
Alphanumeric traceability code
e
3
Pb-free JEDEC designator for Matte Tin (Sn)
*
This package is Pb-free. The Pb-free JEDEC designator (
can be found on the outer packaging for this package.
)
e3
Note: In the event the full Microchip part number cannot be marked on one line, it will
be carried over to the next line, thus limiting the number of available
characters for customer-specific information.
© 2010 Microchip Technology Inc.
DS22191B-page 25
MCP73123/223
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/ꢕ01 /ꢇ ꢃꢍꢅꢓꢃ&ꢉꢄ ꢃꢌꢄꢁꢅꢗꢎꢉꢌꢊꢉ%ꢃꢍꢇꢈꢈꢋꢅꢉ#ꢇꢍ%ꢅꢆꢇꢈ!ꢉꢅ ꢎꢌ)ꢄꢅ)ꢃ%ꢎꢌ!%ꢅ%ꢌꢈꢉꢊꢇꢄꢍꢉ ꢁ
ꢘ,21 ꢘꢉ$ꢉꢊꢉꢄꢍꢉꢅꢓꢃ&ꢉꢄ ꢃꢌꢄ'ꢅ! !ꢇꢈꢈꢋꢅ)ꢃ%ꢎꢌ!%ꢅ%ꢌꢈꢉꢊꢇꢄꢍꢉ'ꢅ$ꢌꢊꢅꢃꢄ$ꢌꢊ&ꢇ%ꢃꢌꢄꢅꢑ!ꢊꢑꢌ ꢉ ꢅꢌꢄꢈꢋꢁ
ꢖꢃꢍꢊꢌꢍꢎꢃꢑ ꢗꢉꢍꢎꢄꢌꢈꢌꢐꢋ ꢓꢊꢇ)ꢃꢄꢐ 0ꢚꢒꢝꢚ>+/
DS22191B-page 26
© 2010 Microchip Technology Inc.
MCP73123/223
ꢀꢁꢂꢃꢄꢅꢆꢇꢈꢉꢅꢊꢋꢌꢍꢇꢎꢏꢅꢉꢇꢐꢉꢅꢋꢑꢇꢒꢓꢇꢃꢄꢅꢆꢇꢈꢅꢍꢔꢅꢕꢄꢇꢖꢗꢐꢘꢇMꢇꢙꢚꢙꢚꢁꢛꢜꢇ ꢇ!ꢓꢆ"ꢇ#ꢎꢐꢒ$
ꢒꢓꢋꢄ% 2ꢌꢊꢅ%ꢎꢉꢅ&ꢌ %ꢅꢍ!ꢊꢊꢉꢄ%ꢅꢑꢇꢍ*ꢇꢐꢉꢅ"ꢊꢇ)ꢃꢄꢐ 'ꢅꢑꢈꢉꢇ ꢉꢅ ꢉꢉꢅ%ꢎꢉꢅꢖꢃꢍꢊꢌꢍꢎꢃꢑꢅꢂꢇꢍ*ꢇꢐꢃꢄꢐꢅꢕꢑꢉꢍꢃ$ꢃꢍꢇ%ꢃꢌꢄꢅꢈꢌꢍꢇ%ꢉ"ꢅꢇ%ꢅ
ꢎ%%ꢑ133)))ꢁ&ꢃꢍꢊꢌꢍꢎꢃꢑꢁꢍꢌ&3ꢑꢇꢍ*ꢇꢐꢃꢄꢐ
© 2010 Microchip Technology Inc.
DS22191B-page 27
MCP73123/223
NOTES:
DS22191B-page 28
© 2010 Microchip Technology Inc.
MCP73123/223
APPENDIX A: REVISION HISTORY
Revision B (January 2010)
The following is the list of modifications:
1. Updated the OVP value for MCP73223-C2S/MF
in Table 2.
2. Updated the Battery Short Protection values in
the DC Characteristics table.
Revision A (July 2009)
• Original Release of this Document.
© 2010 Microchip Technology Inc.
DS22191B-page 29
MCP73123/223
NOTES:
DS22191B-page 30
© 2010 Microchip Technology Inc.
MCP73123/223
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
Examples:
PART NO.
Device
X
XX
a)
MCP73123-22SI/MF: Single Cell Lithium Iron
Phosphate Battery Device
MCP73123T-22SI/MF: Tape and Reel,
Temperature Package
Range
b)
Single Cell Lithium Iron
Phosphate Battery Device
Device:
MCP73123:
Single Cell Lithium Iron Phosphate Battery
Device
a)
b)
MCP73223-C2SI/MF: Dual Cell Lithium Iron
Phosphate Battery Device
MCP73223T-C2SI/MF:Tape and Reel,
Dual Cell Lithium Iron
MCP73123T: Single Cell Lithium Iron Phosphate Battery
Device, Tape and Reel
MCP73223:
Dual Cell Lithium Iron Phosphate Battery
Device
Phosphate Battery Device
MCP73223T: Dual Cell Lithium Iron Phosphate Battery
Device, Tape and Reel
Temperature
Range:
I
= -40°C to +85°C (Industrial)
Package:
MF
=
Plastic Dual Flat No Lead, 3x3 mm Body (DFN),
10-Lead
© 2010 Microchip Technology Inc.
DS22191B-page 31
MCP73123/223
NOTES:
DS22191B-page 32
© 2010 Microchip Technology Inc.
Note the following details of the code protection feature on Microchip devices:
•
Microchip products meet the specification contained in their particular Microchip Data Sheet.
•
Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.
•
There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
•
•
Microchip is willing to work with the customer who is concerned about the integrity of their code.
Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights.
Trademarks
The Microchip name and logo, the Microchip logo, dsPIC,
KEELOQ, KEELOQ logo, MPLAB, PIC, PICmicro, PICSTART,
rfPIC and UNI/O are registered trademarks of Microchip
Technology Incorporated in the U.S.A. and other countries.
FilterLab, Hampshire, HI-TECH C, Linear Active Thermistor,
MXDEV, MXLAB, SEEVAL and The Embedded Control
Solutions Company are registered trademarks of Microchip
Technology Incorporated in the U.S.A.
Analog-for-the-Digital Age, Application Maestro, CodeGuard,
dsPICDEM, dsPICDEM.net, dsPICworks, dsSPEAK, ECAN,
ECONOMONITOR, FanSense, HI-TIDE, In-Circuit Serial
Programming, ICSP, Mindi, MiWi, MPASM, MPLAB Certified
logo, MPLIB, MPLINK, mTouch, Octopus, Omniscient Code
Generation, PICC, PICC-18, PICDEM, PICDEM.net, PICkit,
PICtail, PIC32 logo, REAL ICE, rfLAB, Select Mode, Total
Endurance, TSHARC, UniWinDriver, WiperLock and ZENA
are trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated
in the U.S.A.
All other trademarks mentioned herein are property of their
respective companies.
© 2010, Microchip Technology Incorporated, Printed in the
U.S.A., All Rights Reserved.
Printed on recycled paper.
Microchip received ISO/TS-16949:2002 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.
© 2010 Microchip Technology Inc.
DS22191B-page 33
WORLDWIDE SALES AND SERVICE
AMERICAS
ASIA/PACIFIC
ASIA/PACIFIC
EUROPE
Corporate Office
Asia Pacific Office
Suites 3707-14, 37th Floor
Tower 6, The Gateway
Harbour City, Kowloon
Hong Kong
Tel: 852-2401-1200
Fax: 852-2401-3431
India - Bangalore
Tel: 91-80-3090-4444
Fax: 91-80-3090-4080
Austria - Wels
Tel: 43-7242-2244-39
Fax: 43-7242-2244-393
2355 West Chandler Blvd.
Chandler, AZ 85224-6199
Tel: 480-792-7200
Fax: 480-792-7277
Technical Support:
http://support.microchip.com
Web Address:
www.microchip.com
Denmark - Copenhagen
Tel: 45-4450-2828
Fax: 45-4485-2829
India - New Delhi
Tel: 91-11-4160-8631
Fax: 91-11-4160-8632
France - Paris
Tel: 33-1-69-53-63-20
Fax: 33-1-69-30-90-79
India - Pune
Tel: 91-20-2566-1512
Fax: 91-20-2566-1513
Australia - Sydney
Tel: 61-2-9868-6733
Fax: 61-2-9868-6755
Atlanta
Duluth, GA
Tel: 678-957-9614
Fax: 678-957-1455
Germany - Munich
Tel: 49-89-627-144-0
Fax: 49-89-627-144-44
Japan - Yokohama
Tel: 81-45-471- 6166
Fax: 81-45-471-6122
China - Beijing
Tel: 86-10-8528-2100
Fax: 86-10-8528-2104
Italy - Milan
Tel: 39-0331-742611
Fax: 39-0331-466781
Korea - Daegu
Tel: 82-53-744-4301
Fax: 82-53-744-4302
Boston
China - Chengdu
Tel: 86-28-8665-5511
Fax: 86-28-8665-7889
Westborough, MA
Tel: 774-760-0087
Fax: 774-760-0088
Netherlands - Drunen
Tel: 31-416-690399
Fax: 31-416-690340
Korea - Seoul
China - Chongqing
Tel: 86-23-8980-9588
Fax: 86-23-8980-9500
Tel: 82-2-554-7200
Fax: 82-2-558-5932 or
82-2-558-5934
Chicago
Itasca, IL
Tel: 630-285-0071
Fax: 630-285-0075
Spain - Madrid
Tel: 34-91-708-08-90
Fax: 34-91-708-08-91
China - Hong Kong SAR
Tel: 852-2401-1200
Fax: 852-2401-3431
Malaysia - Kuala Lumpur
Tel: 60-3-6201-9857
Fax: 60-3-6201-9859
Cleveland
UK - Wokingham
Tel: 44-118-921-5869
Fax: 44-118-921-5820
Independence, OH
Tel: 216-447-0464
Fax: 216-447-0643
China - Nanjing
Tel: 86-25-8473-2460
Fax: 86-25-8473-2470
Malaysia - Penang
Tel: 60-4-227-8870
Fax: 60-4-227-4068
Dallas
Addison, TX
Tel: 972-818-7423
Fax: 972-818-2924
China - Qingdao
Tel: 86-532-8502-7355
Fax: 86-532-8502-7205
Philippines - Manila
Tel: 63-2-634-9065
Fax: 63-2-634-9069
Detroit
China - Shanghai
Tel: 86-21-5407-5533
Fax: 86-21-5407-5066
Singapore
Tel: 65-6334-8870
Fax: 65-6334-8850
Farmington Hills, MI
Tel: 248-538-2250
Fax: 248-538-2260
China - Shenyang
Tel: 86-24-2334-2829
Fax: 86-24-2334-2393
Taiwan - Hsin Chu
Tel: 886-3-6578-300
Fax: 886-3-6578-370
Kokomo
Kokomo, IN
Tel: 765-864-8360
Fax: 765-864-8387
China - Shenzhen
Tel: 86-755-8203-2660
Fax: 86-755-8203-1760
Taiwan - Kaohsiung
Tel: 886-7-536-4818
Fax: 886-7-536-4803
Los Angeles
Mission Viejo, CA
Tel: 949-462-9523
Fax: 949-462-9608
China - Wuhan
Tel: 86-27-5980-5300
Fax: 86-27-5980-5118
Taiwan - Taipei
Tel: 886-2-2500-6610
Fax: 886-2-2508-0102
Santa Clara
China - Xian
Tel: 86-29-8833-7252
Fax: 86-29-8833-7256
Thailand - Bangkok
Tel: 66-2-694-1351
Fax: 66-2-694-1350
Santa Clara, CA
Tel: 408-961-6444
Fax: 408-961-6445
China - Xiamen
Tel: 86-592-2388138
Fax: 86-592-2388130
Toronto
Mississauga, Ontario,
Canada
Tel: 905-673-0699
Fax: 905-673-6509
China - Zhuhai
Tel: 86-756-3210040
Fax: 86-756-3210049
12/30/09
DS22191B-page 34
© 2010 Microchip Technology Inc.
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