3

LTC1734L

1734lf

otherwise noted. All current into a pin is positive and current out of a pin is negative. All voltages are referenced to GND, unless

otherwise specified.

ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Charger Manual Control

Manual Shutdown Threshold

q

2.05

2.15

2.25

V

Manual Shutdown Hysteresis

90

mV

Program Pin Pull-Up Current

– 6

– 3

– 1.5

µA

Protection

Drive Output Short-Circuit Current Limit

q

35

65

130

mA

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: The LTC1734LE is guaranteed to meet performance specifications

from 0

°C to 70°C ambient temperature range and 0°C to 100°C junction

temperature range. Specifications over the – 40

°C to 85°C operating

ambient temperature range are assured by design, characterization and

correlation with statistical process controls.

Note 3: Assumes that the external PNP pass transistor has negligible B-C

Note 4: Assumes that the external PNP pass transistor has negligible B-E

Note 5: The 4.68V maximum undervoltage lockout (UVLO) exit threshold

microseconds or less are ignored by the UVLO. If manual shutdown is

threshold before manual shutdown can be exited. When operating near the

must be used.

TYPICAL PERFOR A CE CHARACTERISTICS

Float Voltage vs Temperature

and Supply Voltage

TEMPERATURE (

°C)

–50

4.19

4.20

4.21

0

50

75

1734 G01

–25

25

100

125

PNP = FCX589

0

4.199

4.200

4.201

50

100

125

1734 G02

25

75

150

175

PNP = FCX589

TEMPERATURE (

°C)

–50

48

49

50

51

52

0

50

75

1734 G03

–25

25

100

125

PNP = FCX589

and Supply Voltage