MCP73841_13 datasheet(4/26 Pages) MICROCHIP

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MCP73841/2/3/4

DS21823D-page 4

 2003-2013 Microchip Technology Inc.

Preconditioning Current Regulation (Trickle Charge Constant-Current Mode)

Precondition Current

Regulation Threshold

VPCS

510

VDD – VSENSE,

TA = -5°C to +55°C

Precondition Threshold Voltage

VPTH

MCP73841-4.1,

MCP73843-4.1

2.70

2.80

2.90

VBAT Low-to-High

MCP73841-4.2,

MCP73843-4.2

2.75

2.85

2.95

VBAT Low-to-High

MCP73842-8.2,

MCP73844-8.2

5.40

5.60

5.80

VBAT Low-to-High

MCP73842-8.4,

MCP73844-8.4

5.50

5.70

5.90

VBAT Low-to-High

Charge Termination

Charge Termination Threshold

VTCS

VDD – VSENSE,

TA = -5°C to +55°C

Automatic Recharge

Recharge Threshold Voltage

VRTH

MCP73841,

MCP73843

VREG-

300 mV

VREG-

200 mV

VREG-

100 mV

VVBAT High-to-Low

MCP73842,

MCP73844

VREG-

600 mV

VREG-

400 mV

VREG-

200 mV

VVBAT High-to-Low

External MOSFET Gate Drive

Gate Drive Current

IDRV

–

Sink, CV Mode

–

-0.5

–

Source, CV Mode

Gate Drive Minimum Voltage

VDRVMIN

––

1.0

VDD = 4.5V

Gate - Source Clamp Voltage

VGS

-7.0

–

-4.5

VDD = 12.0V

Thermistor Reference - MCP73841, MCP73842

Thermistor Reference Output

Voltage

VTHREF

2.475

2.55

2.625

TA = +25°C, VDD = VREG(Typ)+1V,

ITHREF = 0 mA

Temperature Coefficient

TCTHREF

–+50

–

ppm/°C

Thermistor Reference Source

Current

ITHREF

200

–

µA

Thermistor Reference Line

Regulation

V

THREF/

VTHREF)|/

V

–

0.1

0.25

%/V

VDD=[VREG(Typ)+1V] to 12V

Thermistor Reference Load

Regulation

V

THREF/

VTHREF

–

0.01

0.10

ITHREF = 0 mA to 0.20 mA

Thermistor Comparator - MCP73841, MCP73842

Upper Trip Threshold

VT1

1.18

1.25

1.32

Upper Trip Point Hysteresis

VT1HYS

–-50

–

Lower Trip Threshold

VT2

0.59

0.62

0.66

Lower Trip Point Hysteresis

VT2HYS

–80

–

Input Bias Current

|IBIAS|–

–

µA

Status Indicator

Sink Current

ISINK

Low Output Voltage

VOL

–

200

400

ISINK = 1 mA

Input Leakage Current

ILK

–0.01

µA

ISINK = 0 mA, VSTAT1 = 12V

DC CHARACTERISTICS (CONTINUED)

Electrical Specifications: Unless otherwise indicated, all limits apply for VDD= [VREG(Typ)+0.3V] to 12V, TA = -40°C to +85°C.

Typical values are at +25°C, VDD = [VREG(Typ) + 1V].

Parameters

Sym

Min

Typ

Max

Units

Conditions

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