MCP73213T-A21I/MF_技术文档

MCP73213

Dual-Cell Li-Ion/Li-Polymer Battery Charge Management

Controller with Input Overvoltage Protection

Features

Description

• Complete Linear Charge Management Controller:

- Integrated Input Overvoltage Protection

- Integrated Pass Transistor

The MCP73213 is a highly integrated Li-Ion battery

charge management controller for use in space-limited

and cost-sensitive applications. The MCP73213

provides specific charge algorithms for dual-cell Li-Ion/

Li-Polymer 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 MCP73213 ideally suitable for

portable applications. The absolute maximum voltage,

up to 18V, allows the use of MCP73213 in harsh

environments, such as low-cost wall wart or voltage

spikes from plug/unplug.

- Integrated Current Sense

- Integrated Reverse Discharge Protection

• Constant Current/Constant Voltage Operation

with Thermal Regulation

• 4.15V Undervoltage Lockout (UVLO)

• 13V Input Overvoltage Protection

• High Accuracy Preset Voltage Regulation through

Full Temperature Range (–5°C to +55°C ±0.6%)

The MCP73213 employs a constant current/constant

voltage charge algorithm. The various charging voltage

regulations provide design engineers flexibility to use in

different applications. The fast charge, constant current

value is set with one external resistor from 130 mA to

1100 mA. The MCP73213 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.

• Battery Charge Voltage Options:

- 8.20V, 8.40V, 8.7V or 8.8V

• 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

• Automatic End-of-Charge Control:

The PROG pin of the MCP73213 also serves as enable

pin. When high impedance is applied, the MCP73213

will be in Standby mode.

- Selectable Minimum Current Ratio:

5%, 7.5%, 10% or 20%

- Elapse Safety Timer: 4 hr., 6 hr., 8 hr. or

Disable

The MCP73213 is fully specified over the ambient

temperature range of -40°C to +85°C. The MCP73213

is available in a 10-lead DFN package.

• Automatic Recharge:

- Available Options: 95% or Disable

• Factory Preset Charge Status Output:

- On/Off or Flashing

Package Types (Top View)

MCP73213

• Soft Start

3x3 DFN *

• Temperature Range: –40°C to +85°C

• Packaging: DFN-10 (3 mm x 3 mm)

V

PROG

1

10

DD

V

2

3

4

5

9

8

7

6

SS

EP

11

Applications

V

BAT

SS

STAT

NC

BAT

• Digital Camcorders

NC

• Portable Media Players

• Ultra Mobile Personal Computers

• Netbook Computers

* Includes Exposed Thermal Pad (EP); see Table 3-1.

• Handheld Devices

• Walkie-Talkie

• Low-Cost 2-Cell Li-Ion/Li-Poly Chargers/Cradles

 2009-2018 Microchip Technology Inc.

DS20002190D-page 1

MCP73213

Typical Application

3

4

1

V_DD

V_BAT

AC-DC-Adapter

+

2

7

V_DD

C_OUT

C

IN

R_LED

2-Cell

Li-Ion

Battery

10

STAT

PROG

9

8

R_PROG

5 NC

V_SS

-

6

NC

DS20002190D-page 2

 2009-2018 Microchip Technology Inc.

MCP73213

Functional Block Diagram

VO

REG

DIRECTION

CONTROL

V

BAT

V

DD

CURRENT

LIMIT

+

-

V

REF

G=0.001

PROG

CA

+

-

REFERENCE,

BIAS, UVLO,

AND SHDN

V

(1.21V)

REF

+

VO

UVLO

REG

-

PRECONDITION

+

TERM

-

+

CHARGE

CONTROL,

TIMER,

AND

VA

STAT

+

-

STATUS

LOGIC

V

SS

-

13V

+

V

DD

Input OverVP

-

95% V

REG

-

+

110°C

V

BAT

+

*Recharge

T

SD

Thermal Regulation

*Only available on selected options

DS20002190D-page 4

 2009-2018 Microchip Technology Inc.

MCP73213

† 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_DD......................................................................18.0V

V_PROG...................................................................6.0V

All Inputs and Outputs w.r.t. V_SS.....-0.3 to (V_DD+0.3)V

Maximum Junction Temperature, T_J.Internally Limited

Storage Temperature ........................–65°C to +150°C

ESD Protection on All Pins  4 kV HBM

ESD Protection on All Pins  300V MM

DC CHARACTERISTICS

Electrical Specifications: Unless otherwise indicated, all limits apply for V_DD= [V_REG(Typical) + 0.3V] to 12V,

T_A= -40°C to +85°C. Typical values are at +25°C, V_DD= [V_REG(Typical) + 1.0V]

Parameters

Supply Input

Sym.

Min.

Typ.

Max.

Units

Conditions

Input Voltage Range

Operating Supply Voltage

Supply Current

V_DD

I_SS

4

4.2

—

16

13

V

4

5.5

μA Shutdown (V_DD≤ V_BAT– 150 mV)

μA Charging

700

50

1500

125

150

μA Standby (PROG Floating)

μA Charge Complete; No Battery;

V_DD< V_STOP

Battery Discharge Current

Output Reverse Leakage

Current

I_DISCHARGE

—

0.5

2

μA Standby (PROG Floating)

μA Shutdown (V_DD≤ V_BAT

or V_DD< V_STOP

)

—

10

17

μA Charge Complete; V_DDis present

Undervoltage Lockout

UVLO Start Threshold

UVLO Stop Threshold

UVLO Hysteresis

V_START

V_STOP

V_HYS

4.10

4.00

—

4.15

4.05

100

4.25

4.10

—

V

mV

Overvoltage Protection

OVP Start Threshold

OVP Hysteresis

V_OVP

12.8

—

13

13.2

—

V

V_OVPHYS

150

mV

Voltage Regulation (Constant Voltage Mode)

Regulated Output Voltage

Options

V_REG

8.15

8.35

8.65

8.75

–0.6

—

8.20

8.40

8.70

8.80

—

8.25

8.45

8.75

8.85

0.6

V

%

T_A= –5°C to +55°C

_DD= [V_REG(Typical)+1V]

_OUT= 50 mA

V

I

Output Voltage Tolerance

Line Regulation

V_RTOL

V_BAT

_BAT)/V_DD

/

0.05

0.20

%/V V_DD= [V_REG(Typical)+1V] to 12V

_OUT= 50 mA

I_OUT= 50 mA – 150 mA

_DD= [V_REG(Typical)+1V]

V

|

I

Load Regulation

V_BAT/V_BAT

|

—

0.05

0.20

%

V

Note 1: Not production tested. Ensured by design.

 2009-2018 Microchip Technology Inc.

DS20002190D-page 5

MCP73213

DC CHARACTERISTICS (CONTINUED)

Electrical Specifications: Unless otherwise indicated, all limits apply for V_DD= [V_REG(Typical) + 0.3V] to 12V,

T_A= -40°C to +85°C. Typical values are at +25°C, V_DD= [V_REG(Typical) + 1.0V]

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

Supply Ripple Attenuation

PSRR

—

–46

–30

—

dB I_OUT= 20 mA, 10 Hz to 1 kHz

dB

I_OUT= 20 mA, 10 Hz to 10 kHz

Battery Short Protection

BSP Start Threshold

BSP Hysteresis

V_SHORT

V_BSPHYS

I_SHORT

—

3.4

150

25

—

V

mV

mA

BSP Regulation Current

Current Regulation (Fast Charge, Constant-Current Mode)

Fast Charge Current

Regulation

I_REG

130

117

900

—

1100

143

mA T_A= –5°C to +55°C

130

1000

mA

PROG = 10 k

PROG = 1.1 k

1100

Preconditioning Current Regulation (Trickle Charge Constant-Current Mode)

Precondition Current

Ratio

I_{PREG REG}

/I

—

10

—

%

PROG = 1 kto 10 k

T_A=-5°C to +55°C

—

64

69

—

100

66.5

71.5

100

—

69

74

—

%

No Preconditioning

V_BATLow-to-High

Precondition Voltage

Threshold Ratio

V

_PTH/V_REG

V_PHYS

I_TERM/I_REG

Precondition Hysteresis

mV V_BATHigh-to-Low (Note 1)

Charge Termination

Current Ratio

3.7

5.6

7.5

15

5

6.3

9.4

12.5

25

%

PROG = 1 kto 10 k

T_A=–5°C to +55°C

7.5

10

20

Automatic Recharge

Recharge Voltage

Threshold Ratio

V_RTH/V_REG

93

—

95.0

0

97

—

%

V_BATHigh-to-Low

No Automatic Recharge

Pass Transistor ON-Resistance

ON-Resistance

R_DSON

—

350

—

m V_DD= 4.5V, T_J= 105°C (Note 1)

Status Indicator - STAT

Sink Current

I_SINK

V_OL

I_LK

—

20

0.2

35

0.5

1

mA

Low Output Voltage

Input Leakage Current

PROG Input

V

I_SINK= 4 mA

0.001

μA High Impedance, V_DDon pin

Charge Impedance

Range

R_PROG

V_PDENTRY

V_PDEXIT

1

—

22

—

k

Shutdown Impedance

—

200

k Impedance for Shutdown

Automatic Power-Down

Entry Threshold

V

+ 10

V

+ 50

—

V

V_DDFalling

V_DDRising

BAT

mV

+ 150

Automatic Power-Down

Exit Threshold

—

V

+ 250

BAT

mV

Note 1: Not production tested. Ensured by design.

DS20002190D-page 6

 2009-2018 Microchip Technology Inc.

MCP73213

DC CHARACTERISTICS (CONTINUED)

Electrical Specifications: Unless otherwise indicated, all limits apply for V_DD= [V_REG(Typical) + 0.3V] to 12V,

T_A= -40°C to +85°C. Typical values are at +25°C, V_DD= [V_REG(Typical) + 1.0V]

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

Thermal Shutdown

Die Temperature

T_SD

—

150

10

—

C

Die Temperature

Hysteresis

T_SDHYS

Note 1: Not production tested. Ensured by design.

AC CHARACTERISTICS

Electrical Specifications: Unless otherwise specified, all limits apply for V_DD= [V_REG(Typical)+0.3V] to 12V,

T_A=–40°C to +85°C. Typical values are at +25°C, V_DD= [V_REG(Typical)+1.0V]

Parameters

Elapsed Timer

Sym.

Min.

Typ.

Max.

Units

Conditions

Elapsed Timer Period

t_EL-

—

0

—

Hours Timer Disabled

APSED

3.6

5.4

7.2

4.0

6.0

8.0

4.4

6.6

8.8

Hours

Preconditioning Timer

Preconditioning Timer Period

t_PRECHG

—

0

—

Hours Disabled Timer

Hours

0.4

0.5

0.6

Status Indicator

Status Output Turn-Off

t_OFF

t_ON

—

500

μs

I_SINK= 1 mA to 0 mA

(Note 1)

Status Output Turn-On

I_SINK= 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 V_DD= [V_REG(Typical) + 0.3V] to 6V.

Typical values are at +25°C, V_DD= [V_REG(Typical) + 1.0V]

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

Temperature Ranges

Specified Temperature Range

Operating Temperature Range

Storage Temperature Range

Thermal Package Resistances

T_A

T_J

T_A

–40

–65

—

+85

+125

+150

°C

Thermal Resistance, DFN-10LD

(3x3)

_JA

_JC

—

62

—

°C/W 4-Layer JC51-7 Standard

Board, Natural Convection

20.5

°C/W

 2009-2018 Microchip Technology Inc.

DS20002190D-page 7

MCP73213

NOTES:

DS20002190D-page 8

 2009-2018 Microchip Technology Inc.

MCP73213

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, V_DD= [V_REG(Typical) + 1V], T_A= +25°C, Constant Voltage mode.

FIGURE 2-1:

Battery Regulation Voltage

FIGURE 2-4:

Battery Regulation Voltage

(V ) vs. Supply Voltage (V ).

(V ) vs. Ambient Temperature (T ).

BAT

DD

BAT

A

FIGURE 2-2:

Battery Regulation Voltage

FIGURE 2-5:

Charge Current (I

) vs.

OUT

(V ) vs. Supply Voltage (V ).

Programming Resistor (R

).

BAT

DD

PROG

FIGURE 2-3:

Battery Regulation Voltage

FIGURE 2-6:

Charge Current (I

) vs.

OUT

(V ) vs. Ambient Temperature (T ).

Supply Voltage (V ).

BAT

A

DD

 2009-2018 Microchip Technology Inc.

DS20002190D-page 9

MCP73213

TYPICAL PERFORMANCE CURVES (CONTINUED)

Note: Unless otherwise indicated, V_DD= [V_REG(Typical) + 1V], T_A= +25°C, Constant-voltage mode.

FIGURE 2-7:

Charge Current (I

) vs.

FIGURE 2-10:

Charge Current (I

) vs.

OUT

Supply Voltage (V ).

Ambient Temperature (T ).

DD

A

FIGURE 2-8:

Supply Voltage (V ).

Charge Current (I

) vs.

FIGURE 2-11:

Regulation Current (I

Battery Short Protection

) vs. Ambient

OUT

DD

SHORT

Temperature (T ).

A

9.0

8.0

7.0

6.0

5.0

4.0

3.0

2.0

1.0

0.0

-1.0

End of Charge

V_DD< V_BAT

V_DD< V_STOP

-5.0

5.0

15.0

25.0

35.0

45.0

55.0

Ambient Temperature (°C)

FIGURE 2-9:

Charge Current (I

) vs.

FIGURE 2-12:

Output Leakage Current

OUT

Ambient Temperature (T ).

(I

) vs. Ambient Temperature (T ).

A

DISCHARGE

A

DS20002190D-page 10

 2009-2018 Microchip Technology Inc.

MCP73213

TYPICAL PERFORMANCE CURVES (CONTINUED)

Note: Unless otherwise indicated, V_DD= [V_REG(Typical) + 1V], T_A= +25°C, Constant-voltage mode.

200 mA/div

5V/div

2V/div

FIGURE 2-16:

Input Overvoltage Protection

FIGURE 2-13:

Battery Voltage Accuracy

(V ) vs. Supply Voltage (V ).

(V_IN= 5V/Div, V_BAT= 2V/Div, I_LOAD= 200 mA/Div, Time:

200 ms/Div)

RTOL

DD

12V

Output Ripple (V)

Source Voltage (V)

9.2V

Output Current (mA)

Output Ripple (V)

FIGURE 2-14:

(I_LOAD= 50 mA/Div, Output: 100 mV/Div, Time:

100 μs/Div).

Load Transient Response

FIGURE 2-17:

(I = 10 mA, V = 1V/Div, V

OUT

Time: 100 μs/Div).

Line Transient Response

= 100 mV/Div,

LOAD

IN

12V

Source Voltage (V)

9.2V

Output Ripple (V)

FIGURE 2-15:

Complete Charge Cycle.

FIGURE 2-18:

Line Transient Response

= 100 mA, V = 1V/Div, V = 100 mV/

IN OUT

(I

LOAD

Div, Time:100 μs/Div).

 2009-2018 Microchip Technology Inc.

DS20002190D-page 11

MCP73213

NOTES:

DS20002190D-page 12

 2009-2018 Microchip Technology Inc.

MCP73213

3.0

PIN DESCRIPTION

The descriptions of the pins are listed in Table 3-1.

TABLE 3-1:

MCP73213

PIN FUNCTION TABLE

Symbol

I/O

Description

DFN-10

1, 2

3, 4

5, 6

7

V_DD

V_BAT

NC

I

Battery Management Input Supply Pin

I/O Battery Charge Control Output Pin

—

O

No Connection Pin

STAT

V_SS

Battery Charge Status Output Pin

Battery Management 0V Reference Pin

8, 9

10

—

PROG

EP

I/O Battery Charge Current Regulation Program and Charge Control Enable Pin

Exposed Pad Pin

11

—

3.1

Battery Management Input Supply

(V

3.5

Battery Management 0V Reference

(V )

)

DD

SS

A supply voltage of [V_REG(Typical) + 0.3V] to 13.0V is

recommended. Bypass to V_SSwith a minimum of 1 μF.

The V_DDpin is rated 18V absolute maximum to prevent

a sudden rise in input voltage from spikes or low-cost

AC-DC wall adapters from causing an over-voltage

condition and damaging the device.

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 V_SSduring constant current (CC) mode.

PROG pin also serves as charge control enable. When

a typical 200 k impedance is applied to the PROG

pin, the MCP73213 will go into standby mode until the

high impedance is removed. Refer to Section 5.5

“Constant-Current Mode - Fast Charge” for details.

3.2

Battery Charge Control Output

(V

)

BAT

Connect to the positive terminal of the battery. Bypass

to V_SSwith a minimum of 1 μF to ensure loop stability

when the battery is disconnected.

3.7

Exposed Pad (EP)

3.3

No Connection (NC)

Connect the Exposed Thermal Pad (EP) to the

exposed copper area on the Printed Circuit Board

(PCB) for thermal enhancement. Additional vias in the

copper area under the MCP73213 device can improve

heat dissipation performance and simplify the

assembly process.

No connection.

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 5-2 for a summary of the status output during a

charge cycle.

 2009-2018 Microchip Technology Inc.

DS20002190D-page 13

MCP73213

NOTES:

DS20002190D-page 14

 2009-2018 Microchip Technology Inc.

MCP73213

4.0

DEVICE OVERVIEW

The MCP73213 are simple, but fully integrated linear charge management controllers. Figure 4-1 depicts the

operational flow algorithm.

SHUTDOWN MODE

V

_DD< V_UVLO

V_DD< V_PD

or

PROG > 200 k

STAT = High Z

V_BAT< V_PTH

TIMER FAULT

No Charge Current

STAT = Flashing (Type 2)

STAT = High Z (Type 1)

Timer Suspended

V_DD< V_OVP

PRECONDITIONING MODE

Charge Current = I_PREG

Timer Expired

STAT = LOW

Timer Reset

Timer Enable

V_DD> V_OVP

V_BAT> V_PTH

FAST CHARGE MODE

Charge Current = I_REG

OVERVOLTAGE PROTECTION

Timer Expired

V_BAT< V_RTH

No Charge Current

STAT = High Z

Timer Suspended

STAT = LOW

Timer Reset

Timer Enabled

TIMER FAULT

No Charge Current

STAT = Flashing (Type 2)

STAT = High Z (Type 1)

Timer Suspended

V_DD< V_OVP

V_BAT= V_REG

V_DD> V_OVP

V_DD< V_OVP

CONSTANT VOLTAGE MODE

Charge Voltage = V_REG

STAT = LOW

V_BAT< I_TERM

Die Temperature < T_SDHYS

Charge Mode Resume

CHARGE COMPLETE MODE

V_BAT> V_SHORT

No Charge Current

STAT = High Z

Timer Reset

Charge Mode Resume

Die Temperature > T_SD

V_BAT< V_SHORT

TEMPERATURE FAULT

No Charge Current

BATTERY SHORT PROTECTION

Charge Current = I_SHORT

STAT = Flashing (Type 2)

STAT = High Z (Type 1)

Timer Suspended

STAT = High Z (Type 1)

Timer Suspended

FIGURE 4-1:

The MCP73213 Flow Chart.

 2009-2018 Microchip Technology Inc.

DS20002190D-page 15

MCP73213

NOTES:

DS20002190D-page 16

 2009-2018 Microchip Technology Inc.

MCP73213

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 MCP73213

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 MCP73213 device becomes operational.

5.3.3

BATTERY DETECTION

The MCP73213 detects the battery presence with

charging of the output capacitor. The charge flow will

initiate when the voltage on V_BATis 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.

Any time the input supply is below the UVLO threshold

or approximately 150 mV of the voltage at the V_BATpin,

the MCP73213 device is placed in a shutdown mode.

V_RECHARGEthreshold. Refer to Section 1.0 “Electrical

Characteristics” for V_RECHARGEvalues. The value will

be the same for nonrechargeable devices.

When V_BAT> V_REG+ Hysteresis, the charge will be

suspended (or not started, depending on the condition)

to prevent overcharging.

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

typical 13V OVP threshold. The OVP hysteresis is

approximately 150 mV for the MCP73213 device.

5.4

Preconditioning

If the voltage at the V_BATpin is less than the

preconditioning threshold, the MCP73213 device

enters a preconditioning mode. The preconditioning

threshold is factory set. Refer to Section 1.0

“Electrical Characteristics” for preconditioning

threshold options.

The MCP73213 device is operational between UVLO

and OVP thresholds. The OVP circuit is also recog-

nized as overvoltage lockout (OVLO).

In this mode, the MCP73213 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

MCP73213 becomes operational.

When the voltage at the V_BATpin rises above the

preconditioning threshold, the MCP73213 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:

The MCP73213 device also offers 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 V_BAT

pin, the MCP73213 is placed in a shutdown mode.

5.4.1

TIMER EXPIRED DURING

PRECONDITIONING MODE

For

a

charge cycle to begin, the automatic

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

MCP73213 device remains in this condition until the bat-

tery is removed or input power is cycled. If the battery is

removed, the MCP73213 device enters the Standby

mode, where it remains until a battery is reinserted.

power-down conditions must be met and the charge

enable input must be above the input high threshold.

5.3.1

BATTERY MANAGEMENT INPUT

SUPPLY (V

)

DD

The V_DDinput is the input supply to the MCP73213. The

MCP73213 automatically enters a power-down mode if

the voltage on the V_DDinput falls to within +50 mV of the

battery voltage. This feature prevents draining the

battery pack when the V_DDsupply is not present.

Note:

The typical preconditioning timer for

MCP73213 is 32 minutes. The

MCP73213 also offers options with no

preconditioning timer.

 2009-2018 Microchip Technology Inc.

DS20002190D-page 17

MCP73213

Constant-Current mode is maintained until the voltage

at the V_BATpin reaches the regulation voltage, V_REG

When Constant Current mode is invoked, the internal

timer is reset.

5.5

Constant-Current Mode - Fast

Charge

.

During 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 V_SS. The program resistor and

the charge current are calculated using the following

equation:

If the internal timer expires before the recharge voltage

threshold is reached, a timer fault is indicated and the

charge cycle terminates. The MCP73213 device

remains in this condition until the battery is removed. If

the battery is removed or input power is cycled, the

MCP73213 device enters the Standby mode where it

remains until a battery is reinserted.

EQUATION 5-1:

–0.93

I_REG= 1104  R_PROG

Where:

R_PROG

I_REG

=

kilohm (k)

milliampere (mA)

5.6

Constant-Voltage Mode

When the voltage at the V_BATpin reaches the

regulation voltage, V_REG, constant voltage regulation

begins. The regulation voltage is factory set to 8.2V,

8.4V, 8.7V or 8.8V with a tolerance of ± 0.5%.

EQUATION 5-2:

I_REG









R_PROG= 10^^{log -----------  –0.93}

1104

5.7

Charge Termination

Where:

R_PROG

I_REG

=

kilohm (k)

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 the internal

timer expires. A 1 ms filter time on the termination com-

parator 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.

milliampere (mA)

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 () E24 Resistor ()

5.8

Automatic Recharge

130

150

200

250

300

350

400

450

500

550

600

650

700

750

800

850

900

950

1000

1100

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

1.30k

1.20k

1.10k

1.00k

The MCP73213 device continuously monitors the

voltage at the V_BATpin 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 MCP73213 also offers options with

no automatic recharge.

For the MCP73213 device with no recharge option, the

MCP73213 will go into Standby mode when the termi-

nation condition is met. The charge will not restart until

the following conditions have been met:

• Battery is removed from the system and inserted

again

• V_DDis removed and plugged in again

•

R

_PROGis disconnected (or high-impedance) and

reconnected

DS20002190D-page 18

 2009-2018 Microchip Technology Inc.

MCP73213

5.9

Thermal Regulation

TABLE 5-2:

STATUS OUTPUTS

The MCP73213 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 MCP73213 device. Refer to Section 1.0

“Electrical Characteristics” for thermal package

CHARGE CYCLE

STATE

STAT

Shutdown

Standby

High Z

Preconditioning

L

resistances

and

Section 6.1.1.2

“Thermal

Constant Current Fast

Charge

Considerations” for calculating power dissipation.

.

Constant Voltage

L

Charge Complete - Standby

Temperature Fault

High Z

1.6 second 50% D.C.

Flashing (Type 2)

High Z (Type 1)

Timer Fault

1.6 second 50% D.C.

Flashing (Type 2)

High Z (Type 1)

Preconditioning Timer Fault

1.6 second 50% D.C.

Flashing (Type 2)

High Z (Type 1)

5.12 Battery Short Protection

FIGURE 5-1:

Thermal Regulation.

Once a single-cell Li-Ion battery is detected, an internal

battery short protection (BSP) circuit starts monitoring

the battery voltage. When V_BATfalls below a typical

1.7V battery short protection threshold voltage, the

charging behavior is postponed. A typical 25 mA

detection current is supplied for recovering from the

battery short condition.

5.10 Thermal Shutdown

The MCP73213 suspends charge if the die

temperature exceeds +150°C. Charging will resume

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.

Preconditioning mode resumes when V_BATraises

above the battery short protection threshold. The bat-

tery voltage must rise approximately 150 mV above the

battery short protection voltage before the MCP73213

device becomes operational.

5.11 Status Indicator

The charge status outputs are open-drain outputs with

two different states: Low (L), and High-Impedance

(High 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.

 2009-2018 Microchip Technology Inc.

DS20002190D-page 19

MCP73213

NOTES:

DS20002190D-page 20

 2009-2018 Microchip Technology Inc.

MCP73213

6.0

APPLICATIONS

The MCP73213 is designed to operate in conjunction

with host microcontroller or in stand-alone

applications. The MCP73213 provides the preferred

charge algorithm for dual Lithium-Ion or

Lithium-Polymer cells: Constant Current followed by

Constant Voltage. Figure 6-1 depicts typical

a

stand-alone application circuit, while Figure 6-2

depicts the accompanying charge profile.

3

4

1

V_DD

V_BAT

AC-DC-Adapter

+

2

7

V_DD

C_OUT

C

IN

R_LED

2-Cell

Li-Ion

Battery

10

STAT

PROG

9

8

R_PROG

5 NC

V_SS

-

6

NC

FIGURE 6-1:

Typical Application Circuit.

FIGURE 6-2:

Typical Charge Profile

(875 mAh Li-Ion Battery).

 2009-2018 Microchip Technology Inc.

DS20002190D-page 21

MCP73213

Power dissipation with a 9V, ±10% input voltage

source, 350 mA ±10% and preconditioning threshold

voltage at 6V 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:

Power dissipation = 9.9V – 6.0V   385 mA = 1.50W

This power dissipation with the battery charger in the

DFN-10 package will result approximately 93C above

room temperature.

6.1.1.3

External Capacitors

6.1.1

COMPONENT SELECTION

The MCP73213 is stable with or without a battery load.

In order to maintain good AC stability in Constant-Volt-

age mode, a minimum capacitance of 1 μF is

recommended to bypass the V_BATpin to V_SS. 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

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.

6.1.1.1

Charge Current

The preferred fast charge current for Li-Ion/Li-Poly cells

is below the 1C rate, with an absolute maximum current

at the 2C rate. The recommended fast charge cur-

rent should be obtained from the battery

manufacturer. For example, a 500 mAh battery pack

with 0.7C preferred fast charge current has a charge

current of 350 mA. Charging at this rate provides the

shortest charge cycle times without degradation to the

battery pack performance or life.

Constant

Voltage

mode.

Therefore,

bypass

capacitance may be necessary to compensate for the

inductive nature of the battery pack.

For typical applications, it is recommended to apply a

minimum of 16V rated 1 μF to the output capacitor and

a minimum of 25V rated 1 μF to the input capacitor.

TABLE 6-1:

MLCC CAPACITOR EXAMPLE

MLCC

Capacitors

Temperature

Tolerance

Range

Note:

Please consult with your battery supplier

or refer to the battery data sheet for the

preferred charge rate.

X7R

X5R

-55C to +125C

-55C to +85C

±15%

6.1.1.2

Thermal Considerations

The worst-case power dissipation in the battery

charger occurs when the input voltage is at the

maximum and the device has transitioned from

Preconditioning mode to 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 out-

put 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

6.1.1.4

Reverse-Blocking Protection

Where:

The MCP73213 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.

V_DDMAX

I_REGMAX

V_PTHMIN

=

the maximum input voltage

the maximum fast charge current

the minimum transition threshold

voltage

DS20002190D-page 22

 2009-2018 Microchip Technology Inc.

MCP73213

6.2

PCB Layout Issues

For optimum voltage regulation, place the battery pack

as close as possible to the device’s V_BATand V_SSpins

to minimize voltage drops along the high-current-

carrying PCB traces.

If the PCB layout is used as a heatsink, adding multiple

vias in the heatsink pad can help conduct more heat to

the backplane of the PCB, thus reducing the junction

temperature. Figures 6-4 and 6-5 depict a typical layout

with PCB heatsinking.

FIGURE 6-5:

Typical Layout (Bottom).

102-00261

MCP73213EV

FIGURE 6-3:

Typical Layout (Top).

FIGURE 6-4:

Typical Layout (Top Metal).

 2009-2018 Microchip Technology Inc.

DS20002190D-page 23

MCP73213

NOTES:

DS20002190D-page 24

 2009-2018 Microchip Technology Inc.

MCP73213

7.0

7.1

PACKAGING INFORMATION

Package Marking Information

10-Lead DFN (3x3)

Example:

Standard *

Part Number

MCP73213-A6SI/MF

Z3HI

1443

256

XXXX

Code

YYWW

NNN

Z3HI

Y3HI

MCP73213T-A6SI/MF

MCP73213-B6SI/MF

MCP73213T-B6SI/MF

Legend: XX...X Customer-specific information

Y

YY

WW

NNN

Year code (last digit of calendar year)

Year code (last 2 digits of calendar year)

Week code (week of January 1 is week ‘01’)

Alphanumeric traceability code

Pb-free JEDEC^®designator for Matte Tin (Sn)

e

3

*

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.

 2009-2018 Microchip Technology Inc.

DS20002190D-page 25

MCP73213

Note: For the most current package drawings, please see the Microchip Packaging Specification located at

http://www.microchip.com/packaging

DS20002190D-page 26

 2009-2018 Microchip Technology Inc.

MCP73213

Note: For the most current package drawings, please see the Microchip Packaging Specification located at

http://www.microchip.com/packaging

 2009-2018 Microchip Technology Inc.

DS20002190D-page 27

MCP73213

Note: For the most current package drawings, please see the Microchip Packaging Specification located at

http://www.microchip.com/packaging

DS20002190D-page 28

 2009-2018 Microchip Technology Inc.

MCP73213

APPENDIX A: REVISION HISTORY

Revision D (January 2018)

The following is the list of modifications:

1. Changed captions for Figure 2-16, Figure 2-17,

Figure 2-18.

2. Minor typographical corrections.

Revision C (December 2014)

The following is the list of modifications:

1. Added Note 7 in Table 1 regarding the Type 1

and Type 2 descriptions.

2. Updated the Functional Block Diagram.

3. Updated the thermal resistances in the

Temperature Specifications.

4. Changed captions for the Figures 2-7, 2-8, 2-15,

2-16.

5. Updated Figure 4-1.

6. Updated Section 6.1.1.2, Thermal Considerations.

7. Updated

Section 7.1,

Package

Marking

Information.

8. Minor typographical corrections.

Revision B (December 2009)

The following is the list of modifications:

1. Updated the Battery Short Protection values in

the DC Characteristics table.

Revision A (July 2009)

• Original Release of this Document.

 2009-2018 Microchip Technology Inc.

DS20002190D-page 29

MCP73213

NOTES:

DS20002190D-page 30

 2009-2018 Microchip Technology Inc.

MCP73213

PRODUCT IDENTIFICATION SYSTEM

To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.

Examples:

(1)

X

/XX

XXX

[X]

PART NO.

Device

a)

b)

c)

MCP73213-A6SI/MF: Dual Cell Li-Ion/

Li-Polymer Battery Device

MCP73213-B6SI/MF: Dual Cell Li-Ion/

Li-Polymer Battery Device

MCP73213T-A6SI/MF: Tape and Reel,

Temperature Package Pattern

Range

Tape and Reel

Option

Device:

MCP73213-xxx: Dual Cell Li-Ion/Li-Polymer Battery Device

MCP73213T-xxx: Dual Cell Li-Ion/Li-Polymer Battery Device,

Tape and Reel

Dual Cell Li-Ion/

Li-Polymer Battery Device

d)

MCP73213T-B6SI/MF: Tape and Reel,

Dual Cell Li-Ion/

Li-Polymer Battery Device

Tape and Reel

Option:

T

=

Tape and Reel⁽¹⁾

Note 1:

Tape and Reel identifier only appears in the

catalog part number description. This identifier

is used for ordering purposes and is not

printed on the device package. Check with

your Microchip Sales Office for package

availability with the Tape and Reel option.

Temperature

Range:

I

=

-40C to +85C (Industrial)

Package:

MF

=

10-Lead Plastic Dual Flat, No Lead - 3x3 mm Body

(DFN)

 2009-2018 Microchip Technology Inc.

DS20002190D-page 31

MCP73213

NOTES:

DS20002190D-page 32

 2009-2018 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 unless otherwise stated.

Trademarks

The Microchip name and logo, the Microchip logo, AnyRate, AVR,

AVR logo, AVR Freaks, BeaconThings, BitCloud, chipKIT, chipKIT

logo, CryptoMemory, CryptoRF, dsPIC, FlashFlex, flexPWR,

Heldo, JukeBlox, KEELOQ, KEELOQ logo, Kleer, LANCheck, LINK

MD, maXStylus, maXTouch, MediaLB, megaAVR, MOST, MOST

logo, MPLAB, OptoLyzer, PIC, picoPower, PICSTART, PIC32

logo, Prochip Designer, QTouch, RightTouch, SAM-BA, SpyNIC,

SST, SST Logo, SuperFlash, tinyAVR, UNI/O, and XMEGA are

registered trademarks of Microchip Technology Incorporated in

the U.S.A. and other countries.

ClockWorks, The Embedded Control Solutions Company,

EtherSynch, Hyper Speed Control, HyperLight Load, IntelliMOS,

mTouch, Precision Edge, and Quiet-Wire are registered

trademarks of Microchip Technology Incorporated in the U.S.A.

Adjacent Key Suppression, AKS, Analog-for-the-Digital Age, Any

Capacitor, AnyIn, AnyOut, BodyCom, CodeGuard,

CryptoAuthentication, CryptoCompanion, CryptoController,

dsPICDEM, dsPICDEM.net, Dynamic Average Matching, DAM,

ECAN, EtherGREEN, In-Circuit Serial Programming, ICSP, Inter-

Chip Connectivity, JitterBlocker, KleerNet, KleerNet logo, Mindi,

MiWi, motorBench, MPASM, MPF, MPLAB Certified logo, MPLIB,

MPLINK, MultiTRAK, NetDetach, Omniscient Code Generation,

PICDEM, PICDEM.net, PICkit, PICtail, PureSilicon, QMatrix,

RightTouch logo, REAL ICE, Ripple Blocker, SAM-ICE, Serial

Quad I/O, SMART-I.S., SQI, SuperSwitcher, SuperSwitcher II,

Total Endurance, TSHARC, USBCheck, VariSense, ViewSpan,

WiperLock, Wireless DNA, 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.

Microchip received ISO/TS-16949:2009 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.

Silicon Storage Technology is a registered trademark of Microchip

Technology Inc. in other countries.

GestIC is a registered trademark of Microchip Technology

Germany II GmbH & Co. KG, a subsidiary of Microchip Technology

Inc., in other countries.

All other trademarks mentioned herein are property of their

respective companies.

Reserved.

ISBN: 978-1-5224-2559-5

 2009-2018 Microchip Technology Inc.

DS20002190D-page 33

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Tel: 46-31-704-60-40

New York, NY

Tel: 631-435-6000

Sweden - Stockholm

Tel: 46-8-5090-4654

San Jose, CA

Tel: 408-735-9110

Tel: 408-436-4270

UK - Wokingham

Tel: 44-118-921-5800

Fax: 44-118-921-5820

Canada - Toronto

Tel: 905-695-1980

Fax: 905-695-2078

DS20002190D-page 34

 2009-2018 Microchip Technology Inc.

10/25/17


型号：	MCP73213T-A21I/MF
厂家：	MICROCHIP
描述：	Power Supply Support Circuit, Fixed, 1 Channel, PDSO10 光电二极管
文件：	总34页 (文件大小：769K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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