MAX4838 datasheet(4/10 Pages) MAXIM

Part #	MAX4838

Description	Overvoltage Protection Controllers with Status FLAG

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Manufacturer	MAXIM [Maxim Integrated Products]

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4 / 10 page

Overvoltage Protection Controllers with

Status FLAG

4

_______________________________________________________________________________________

Typical Operating Characteristics (continued)

(VIN = +5V, MAX4838; Si9936DY external MOSFET in back-to-back configuration; TA = +25°C, unless otherwise noted.)

GATE VOLTAGE vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

5.4

5.3

5.2

5.1

9.5

10.0

10.5

11.0

9.0

5.0

5.5

IGATE = 0

IGATE = 4

µA

IGATE = 8

µA

POWER-UP RESPONSE

MAX4838 toc05

IN

GATE

5V

0V

5V

0V

5V

10V

OUT

FLAG

20ms/div

ROUT =

∞

COUT = 0

POWER-UP RESPONSE

MAX4838 toc06

20ms/div

5V

0V

1A

0A

5V

FLAG

IIN

GATE

IN

0V

10V

ROUT = 5

Ω

OVERVOLTAGE RESPONSE

MAX4838 toc07

400ns/div

IN

GATE

IGATE

FLAG

5V

8V

0V

40mA

0A

5V

0V

10V

CGATE = 1500pF

POWER-UP OVERVOLTAGE RESPONSE

MAX4838 toc08

1

µs/div

8V

GATE

IN

IGATE

FLAG

5V

0V

50mA

0A

5V

0V

GATE PULLED UP

TO IN WITH 100

Ω

POWER-DOWN RESPONSE

MAX4838 toc09

10ms/div

5V

IN

GATE

OUT

FLAG

10V

0V

5V

0V

5V

0V

RLOAD = 50

Ω

RFLAG = 100k

Ω TO +5V

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