A4056E6R [AITSEMI]
BATTERY MANAGEMENT STANDALONE LINEAR LI-ION BATTERY CHARGER;
| 型号： | A4056E6R |
| 厂家： | 
AiT Semiconductor |
| 描述： | BATTERY MANAGEMENT STANDALONE LINEAR LI-ION BATTERY CHARGER |
| 文件： | 总10页 (文件大小：319K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
A4056
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
STANDALONE LINEAR LI-ION BATTERY CHARGER
WITH THERMAL REGULATION
DESCRIPTION
FEATURES
The A4056 is
a
complete constant-current
Programmable charge current up to 500mA
No MOSFET, sense resistor or blocking diode
required
/constant -voltage linear charger for single cell
lithium-ion batteries. Its ThinSOT package and low
external component count make the A4056 ideally
suited for portable applications. Furthermore, the
A4056 is specifically designed to work within USB
power specifications.
Complete linear charger in ThinSOT package for
single cell lithium-ion batteries
Constant-current/constant-voltage operation with
thermal regulation to maximize charge rate
without risk of overheating
No external sense resistor is needed, and no
blocking diode is required due to the internal
MOSFET architecture. Thermal feedback regulates
the charge current to limit the die temperature
during high power operation or high ambient
temperature. The charge voltage is fixed at 4.2V,
and the charge current can be programmed
externally with a single resistor. The A4056
automatically terminates the charge cycle when the
charge current drops to 1/10th the programmed
value after the final float voltage is reached.
Charges single cell li-ion batteries directly from
USB port
Preset 4.2V charge voltage with 1% accuracy
Charge current monitor output for gas gauging
Automatic recharge
Charge status output pin
C/10 charge termination
25μA supply current in shutdown
2.9V trickle charge threshold (A4056)
Soft-start limits inrush current
When the input supply (wall adapter or USB supply)
is removed, the A4056 automatically enters a low
current state, dropping the battery drain current to
less than 2μA. The A4056 can be put into shutdown
mode, reducing the supply current to 25μA.
Available in SOT-26 Package
APPLICATION
Cellular Telephones, PDAs, MP3 Players
Bluetooth Applications
Other features include charge current monitor,
under-voltage lockout, automatic recharge and a
status pin to indicate charge termination and the
presence of an input voltage.
TYPICAL APPLICATION
The A4056 is available in SOT-26 package.
ORDERING INFORMATION
Package Type
SOT-26
Part Number
A4056E6R
E6
A4056E6VR
V: Halogen free Package
R: Tape & Reel
Note
AiT provides all RoHS products
Suffix “ V “ means Halogen free Package
REV1.1
- OCT 2013 RELEASED, JAN 2014 UPDATED -
- 1 -
A4056
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
STANDALONE LINEAR LI-ION BATTERY CHARGER
WITH THERMAL REGULATION
PIN DESCRIPTION
Top View
Pin #
1
Symbol
Function
Open-Drain Charge Status Output. When the battery is charging, the CHRG pin is
pulled low by an internal N-channel MOSFET. When the charge cycle is completed, a
CHRG weak pull-down of approximately 20μA is connected to the CHRG pin, indicating an
“AC present” condition. When the A4056 detects an undervoltage lockout condition,
CHRG is forced high impedance.
2
3
GND
Ground.
Charge current output. Provides charge current to the battery and regulates the final
float voltage to 4.2V. An internal precision resistor divider from this pin sets the float
voltage which is disconnected in shutdown mode.
BAT
Positive input supply voltage. Provides power to the charger. VCC can range from
4.25V to 6.5V and should be bypassed with at least a 1μF capacitor. When VCC drops
to within 30mV of the BAT pin voltage, the A4056 enters shutdown mode, dropping
IBAT to less than 2μA.
4
5
VCC
Full indication output, when fully charged, DONE port is an internal N-channel
DONE MOSFET placed in low position. In the charging process, low-power lock condition is
detected, the input is too high to detect locking conditions, DONE-Z state.
Charge current program, charge current monitor and shutdown pin. The charge current
is programmed by connecting a 1% resistor, RPROG to ground. When charging in
constant-current mode, this pin servos to 1V. In all modes, the voltage on this pin can
be used to measure the charge current using the following formula :
IBAT = (VPROG/RPROG)×1000
The PROG pin can also be used to shut down the charger. Disconnecting the program
resistor from ground allows a 3μA current to pull the PROG pin high. When it reaches
6
PROG
the 1.21V shutdown threshold voltage, the charger enters shutdown mode, charging
stops and the input supply current drops to 25μA. This pin is also clamped to
approximately 2.4V. Driving this pin to voltages beyond the clamp voltage will draw
currents as high as 1.5mA. Reconnecting RPROG to ground will return the charger to
normal operation.
REV1.1
- OCT 2013 RELEASED, JAN 2014 UPDATED -
- 2 -
A4056
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
STANDALONE LINEAR LI-ION BATTERY CHARGER
WITH THERMAL REGULATION
ABSOLUTE MAXIMUM RATINGS
VCC, Input Supply Voltage
VPROG, ISET pin Voltage
VBAT, BAT pin Voltage
VSS-0.3V～VSS+10V
VSS-0.3V～Vcc+0.3V
Vss-0.3V～7V
VSS-0.3V～VSS+10V
250mW
VCHRG, CHAG pin Voltage
PD, Power Dissipation
SOT-26
IBAT, BAT pin Current
500mA
IPROG, ISET pin Current
800μA
TOPA, Operating Ambient Temperature
-40°C～+85°C
TSTR, Storage Temperature
-65°C～+125°C
Stress beyond above listed “Absolute Maximum Ratings” may lead permanent damage to the device. These are stress ratings only and
operations of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not
implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
REV1.1
- OCT 2013 RELEASED, JAN 2014 UPDATED -
- 3 -
A4056
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
STANDALONE LINEAR LI-ION BATTERY CHARGER
WITH THERMAL REGULATION
ELECTRICAL CHARACTERISTICS
TA=25℃, Unless specifically designated
Parameter
Input supply voltage
Input overvoltage
Symbol
VCC
VOVP
Vdp
Conditions
Min.
4.25
6.2
Typ.
Max.
6.5
Unit
V
V
Overvoltage release
5.8
V
Charge mode, RPROG=10K
Standby mode
300
200
2000
500
Input supply current
ICC
μA
Shutdown mode (RPROG not
connected, VCC<VBAT or VCC<VUV)
0℃≤TA≤85℃, IBAT=40mA
RPROG =10k,Current mode
RPROG =2k,Current mode
Standby mode, VBAT=4.2V
Shutdown mode
25
50
Regulated Output Voltage
VFLOAT
4.158
93
465
0
4.2
100
500
-2.5
1
4.242
107
535
-6
V
mA
BAT pin Current
IBAT
2
μA
Sleep mode, VCC=0V
1
2
Trickle charge current
Trickle charge Threshold
Voltage
Trickle voltage hysteresis
voltage
V CC undervoltage lockout
Threshold
VCC undervoltage lockout
hysteresis
ITRIKL
VBAT<VTRIKL, RPROG=2k
20
45
70
mA
V
VTRIKL
RPROG=10K，VBAT Rising
2.8
2.9
80
3.0
110
3.93
300
VTRHYS RPROG=10k
60
3.7
150
mV
V
VUV
From V CC low to high
3.8
200
VUVHYS
Vmsd
Vasd
mV
V
PROG pin rising
PROG pin falling
VCC from low to high
VCC from high to low
RPROG=10k
1.15
0.9
70
1.21
1.0
100
30
0.10
0.10
1.0
1.30
1.1
140
Manual shutdown threshold
voltage
VCC-VBAT Lockout Threshold
voltage
mV
5
50
0.085
0.085
0.93
0.115
0.115
1.07
C/10 Termination Current
Threshold
mA/
mA
V
Iterm
VPROG
ICHRG
RPROG=2k
RPROG=10k, Current mode
PROG pin Voltage
CHRG pin weak pull-down
Current
CHRG pin Output low
voltage
VCHRG=5V
8
20
35
0.6
200
μA
VCHRG
ICHRG=5mA
0.35
100
V
Recharge Battery threshold
Voltage
ΔVRECG VFLOAT - VRECHRG
mV
REV1.1
- OCT 2013 RELEASED, JAN 2014 UPDATED -
- 4 -
A4056
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
STANDALONE LINEAR LI-ION BATTERY CHARGER
WITH THERMAL REGULATION
TYPICAL PERFORMANCE CHARACTERISTICS
1.
PROG Pin Voltage vs. Supply
Voltage(Constant Current Mode)
2.
4.
6.
PROG Pin Voltage vs. Temperature
3.
Charge Current vs. PROG Pin Voltage
PROG Pin Pull-Up Current vs. Temperature
and Supply Voltage
5.
PROG Pin Current vs. PROG Pin Voltage
(Pull-Up Current)
PROG Pin Current vs. PROG Pin Voltage
(Clamp Current)
REV1.1
- OCT 2013 RELEASED, JAN 2014 UPDATED -
- 5 -
A4056
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
STANDALONE LINEAR LI-ION BATTERY CHARGER
WITH THERMAL REGULATION
7.
Regulated Output (Float) Voltage vs. Charge
Current
8.
Regulated Output (Float) Voltage vs.
Temperature
9.
Regulated Output (Float) Voltage vs. Supply
Voltage
10. CHRG Pin I-V Curve (Strong Pull-Down
State)
11. CHRG Pin Current vs. Temperature
(Strong Pull-Down State)
12. CHRG Pin I-V Curve (Weak Pull-Down State)
REV1.1
- OCT 2013 RELEASED, JAN 2014 UPDATED -
- 6 -
A4056
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
STANDALONE LINEAR LI-ION BATTERY CHARGER
WITH THERMAL REGULATION
13. CHRG Pin Current vs. Temperature
(Weak Pull-Down State)
14. Trickle Charge Current vs. Temperature
15. Trickle Charge Current vs. Supply Voltage
16. Trickle Charge Threshold vs. Temperature
17. Charge Current vs. Battery Voltage
18. Charge Current vs. Supply Voltage
REV1.1
- OCT 2013 RELEASED, JAN 2014 UPDATED -
- 7 -
A4056
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
STANDALONE LINEAR LI-ION BATTERY CHARGER
WITH THERMAL REGULATION
BLOCK DIAGRAM
REV1.1
- OCT 2013 RELEASED, JAN 2014 UPDATED -
- 8 -
A4056
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
STANDALONE LINEAR LI-ION BATTERY CHARGER
WITH THERMAL REGULATION
PACKAGE INFORMATION
Dimension in SOT-26 Package (Unit: mm)
SYMBOL
MIN
MAX
1.250
0.100
1.150
0.500
0.200
3.020
1.700
2.950
A
A1
A2
b
1.050
0.000
1.050
0.300
0.100
2.820
1.500
2.650
c
D
E
E1
e
0.950(BSC)
e1
L
1.800
0.300
0°
2.000
0.600
8°
θ
REV1.1
- OCT 2013 RELEASED, JAN 2014 UPDATED -
- 9 -
A4056
BATTERY MANAGEMENT
AiT Semiconductor Inc.
www.ait-ic.com
STANDALONE LINEAR LI-ION BATTERY CHARGER
WITH THERMAL REGULATION
IMPORTANT NOTICE
AiT Semiconductor Inc. (AiT) reserves the right to make changes to any its product, specifications, to
discontinue any integrated circuit product or service without notice, and advises its customers to obtain the
latest version of relevant information to verify, before placing orders, that the information being relied on is
current.
AiT Semiconductor Inc.'s integrated circuit products are not designed, intended, authorized, or warranted to
be suitable for use in life support applications, devices or systems or other critical applications. Use of AiT
products in such applications is understood to be fully at the risk of the customer. As used herein may involve
potential risks of death, personal injury, or servere property, or environmental damage. In order to minimize
risks associated with the customer's applications, the customer should provide adequate design and
operating safeguards.
AiT Semiconductor Inc. assumes to no liability to customer product design or application support. AiT
warrants the performance of its products of the specifications applicable at the time of sale.
REV1.1
- OCT 2013 RELEASED, JAN 2014 UPDATED -
- 10 -
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