MAX4920B datasheet(4/19 Pages) MAXIM

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GN1 GATE VOLTAGE

vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

MAX4919B

VGN1 REFERENCED TO GND

2.0

3.0

3.5

2.5

4.0

4.5

5.0

GN1 GATE VOLTAGE

vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

MAX4921B

VGN1 REFERENCED TO GND

0.5

0.8

0.7

0.6

0.9

1.0

1.1

1.2

1.3

1.4

1.5

-40

-15

NORMALIZED BATTERY SWITCH RON

vs. TEMPERATURE

TEMPERATURE (

°C)

Typical Operating Characteristics

(VBTI = 4V, TA = +25°C, unless otherwise noted.)

Battery Power-Up Logic with Overvoltage

and Overcurrent Protection

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VIN = 5V (MAX4919B/MAX4920B) or VIN = 4.2V (MAX4921B), VBTI = 4V, TA = -40°C to +85°C, unless otherwise noted. Typical values

are at TA = +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

GN1 Turn-Off Time

tGOFF

VIN rising at 1V/µs from 5V to 8V

(MAX4919B/MAX4920B), or from 4V to 7V

(MAX4921B); VGN1 = 0.3V,

CGN1 = 500pF

620

µs

Initial Overvoltage Fault Delay

tOVLO

VIN rising at 1V/µs from 0V to 9V, time from

VIN = 5V to IGN1 = 80% of IGPD

1.5

µs

ACOK Deassertion Delay

tACOK

VIN rising at 1V/µs from 5V to 8V

(MAX4919B/MAX4920B), or from 4V to 7V

(MAX4921B); VACOK pullup

voltage = 3V; RACOK = 10k

Ω (Figure 3)

5.8

µs

Disable Time

tDIS

VEN = 2.4V, VGN1 = 0.3V, CGN1 = 500pF

µs

Note 1: All specifications are 100% production tested at TA = +25°C, unless otherwise noted. Specifications over TA = -40°C to

+85°C are guaranteed by design.

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