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MCP73837

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

Microchip Technology 

MCP73837/8

1.0 ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings†

VDDN ................................................................................7.0V

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 kW in Series with 100 pF) ......≥ 4 kV

Machine Model (200 pF, No Series Resistance) .............300V

† 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.

DC CHARACTERISTICS

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

Supply Input

Supply Voltage

VDD

VREG(Typ)

—

+0.3V

6

V Note 1

Supply Current

ISS

—

1900

3000

µA Charging

110

300

µA Charge Complete, No Battery

—

75

100

µA Standby (PROG Floating)

UVLO Start Threshold

VSTART

UVLO Stop Threshold

VSTOP

UVLO Hysteresis

VHYS

UVLO Start Threshold

VSTART

UVLO Stop Threshold

VSTOP

UVLO Hysteresis

VHYS

Voltage Regulation (Constant Voltage Mode)

—

3.35

3.25

—

0.6

3.45

3.35

75

5

3.55

3.45

—

µA Shutdown (VDD < VBAT -

100 mV or VDD < VSTOP)

V VDD= Low to High (USB-Port)

V VDD= High to Low (USB-Port)

mV (USB-Port)

4.1

4.15

4.3

V (AC-Adapter)

4.0

4.1

4.2

V (AC-Adapter)

—

55

—

mV (AC-Adapter)

Regulated Charge Voltage

VREG

4.179

4.328

4.378

4.477

4.20

4.35

4.40

4.50

4.221

4.372

4.422

4.523

V VDD=[VREG(typical)+1V]

V IOUT=30 mA

V TA=-5°C to +55°C

V

Regulated Charge Voltage Tolerance

VRTOL

-0.5

Line Regulation

|(ΔVBAT/

—

VBAT)/ΔVDD|

Load Regulation

|ΔVBAT/VBAT|

—

Supply Ripple Attenuation

PSRR

—

—

—

Current Regulation (Fast Charge Constant-Current Mode)

—

0.075

0.150

60

52

23

+0.5

0.2

0.3

—

—

—

% TA=-5°C to +55°C

%/V VDD=[VREG(typical)+1V] to 6V

IOUT=30 mA

% IOUT=10 mA to 100 mA

VDD=[VREG(typical)+1V]

dB IOUT=10 mA, 10Hz to 1 kHz

dB IOUT=10 mA, 10Hz to 10 kHz

dB IOUT=10 mA, 10Hz to 1 MHz

AC-Adapter Fast Charge Current

IREG

95

105

115

mA PROG1 = 10 kΩ

900

1000

1100 mA PROG1 = 1 kΩ, Note 2

TA=-5°C to +55°C

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.

DS22071A-page 4

© 2007 Microchip Technology Inc.

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