MCP73871 datasheet(7/38 Pages) MICROCHIP

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DS22090B-page 7

MCP73871

PROG1 Input (PROG1)

Charge Impedance Range

RPROG

1—

PROG3 Input (PROG3)

Termination Impedance Range

RPROG

—

100

PROG2 Input (PROG2)

Input High Voltage Level

VIH

1.8

—

Input Low Voltage Level

VIL

——

0.8

Input Leakage Current

ILK

—0.01

µA

VPROG2 = VDD

Timer Enable (TE)

Input High Voltage Level

VIH

1.8

—

Note 1

Input Low Voltage Level

VIL

——

0.8

Note 1

Input Leakage Current

ILK

—0.01

µA

VTE = VDD

Chip Enable (CE)

Input High Voltage Level

VIH

1.8

—

Input Low Voltage Level

VIL

——

0.8

Input Leakage Current

ILK

—0.01

µA

VCE = VDD

Input Source Selection (SEL)

Input High Voltage Level

VIH

1.8

—

Input Low Voltage Level

VIL

——

0.8

Input Leakage Current

ILK

—0.01

µA

VSEL = VDD

Thermistor Bias

Thermistor Current Source

ITHERM

µA

2 k

Ω < R

THERM < 50 kΩ

Thermistor Comparator

Upper Trip Threshold

VT1

1.20

1.24

1.26

VT1 Low-to-High

Upper Trip Point Hysteresis

VT1HYS

—-40

—

Lower Trip Threshold

VT2

0.23

0.25

0.27

VT2 High-to-Low

Lower Trip Point Hysteresis

VT2HYS

—40

—

Thermal Shutdown

Die Temperature

TSD

—

150

—

°C

Die Temperature Hysteresis

TSDHYS

—10

—

°C

DC CHARACTERISTICS (CONTINUED)

Electrical Specifications: Unless otherwise indicated, all limits apply for V

IN = VREG + 0.3V to 6V, TA = -40°C to +85°C.

Typical values are at +25°C, VIN = [VREG (typical) + 1.0V]

Parameters

Sym

Min

Typ

Max

Units

Conditions

Note 1:

The value is ensured by design and not production tested.

The maximum available charge current is also limited by the value set at PROG1 input.

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