MCP73837TNVIMF 查看數據表（PDF） - Microchip Technology

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MCP73837TNVIMF

Advanced Stand-Alone Li-Ion / Li-Polymer Battery Charge Management Controller with Autonomous AC-Adapter or USB-Port Source Selection

Microchip Technology 

MCP73837/8

DC CHARACTERISTICS (Continued)

Electrical Specifications: Unless otherwise indicated, 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

USB-Port Fast Charge Current

IREG

80

90

100

400

450

500

Maximum Output Current Limit

IMAX

—

1200

—

Precondition Current Regulation (Trickle Charge Constant-Current Mode)

mA PROG2 = Low

mA PROG2 = High

TA=-5°C to +55°C

mA PROG1 < 833Ω

Precondition Current Ratio

IPREG / IREG

7.5

15

30

10

12.5

% Note 3

20

25

% TA=-5°C to +55°C

40

50

%

100

%

Precondition Current Threshold Ratio VPTH / VREG

64

69

66.5

69

% VBAT Low to High

71.5

74

%

Precondition Hysteresis

Charge Termination

VPHYS

—

120

—

mV VBAT High to Low

Charge Termination Current Ratio

ITERM / IREG

3.75

5.6

7.5

5

6.25

% PROG1 = 1 kΩ to 10 kΩ

7.5

9.4

% TA=-5°C to +55°C

10

12.5

% Note 3

15

20

25

%

Automatic Recharge

Recharge Voltage Threshold Ratio

VRTH / VREG

92

95

Pass Transistor ON-Resistance

94.0

96

% VBAT High to Low

97

99

% TA=-5°C to +55°C

ON-Resistance

Battery Discharge Current

RDSON

—

350

—

mΩ VDD = 4.5V, TJ = 105°C

Output Reverse Leakage Current

IDISCHARGE

—

0.1

2

µA Standby (PROG1 or PROG2

Floating)

—

0.55

2

µA Shutdown (VDD < VBAT -

100 mV or VDD < VSTOP)

—

-6

-15

µA Charge Complete

Status Indicators - STAT1, STAT2, PG (MCP73837)

Sink Current

Low Output Voltage

Input Leakage Current

PROG1 Input (PROG1)

ISINK

VOL

ILK

—

16

35

mA

—

0.3

1

V ISINK = 4 mA

—

0.03

1

µA High Impedance, VDD on pin

Charge Impedance Range

Shutdown Impedance

RPROG

1

—

—

kΩ Note 4

RPROG

70

—

200

kΩ Minimum Impedance for

Shutdown

PROG2 Inputs (PROG2)

Input High Voltage Level

VIH

0.8VDD

—

—

%

Input Low Voltage Level

VIL

—

—

0.2VDD %

Shutdown Voltage Level

VSD

0.2VDD

—

0.8VDD %

Input Leakage Current

ILK

—

7

15

µA VPROG2 = VDD

Note 1: The supply voltage (VDD) = VAC when input power source is from Ac-Adapter and the supply voltage (VDD) = VUSB

when input power source is from USB-Port.

2: The value is guaranteed by design and not production tested.

3: The current is based on the ratio of selected current regulation (IREG).

4: The maximum charge impedance has to be less than shutdown impedance for normal operation.

© 2007 Microchip Technology Inc.

DS22071A-page 5

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