F72815 datasheet(7/18 Pages) FINTEK

Part #	F72815

Description	Synchronous Buck PWM DC-DC Controller with External Reference Voltage Input

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Manufacturer	FINTEK [Feature Integration Technology Inc.]

Direct Link	http://www.fintek.com.tw/eng

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7 / 18 page

F72815

Aug, 2007

V0.14

-4-

F72815

PARAMETER

SYMBOL

TEST CONDITIONS

MIN.

TYP.

MAX.

UNIT

POWER-ON RESET

Rising VCC threshold

4.1

4.4

V

Falling VCC threshold

3.6

3.75

V

OSCILLATOR AND Protection

Free running frequency

FOSC

250

300

350

kHz

※

Ramp Amplitude

△

VOSC

1.5

VP-P

FB Under Voltage Trip

FB Falling

0.48

0.5

0.52

V

OCSET Current Source

IOCSET

35

40

45

uA

Soft-start interval

TSS

1

3

6

ms

Dead time

TDT

2V to 2V

20

100

ns

PWM CONTROLLER GATE DRIVERS

Upper Drive Source

RUGATE

VDS = 1V, VGS = 12V,

5

10

Ω

Upper Drive Sink

RUGATE

VDS = 1V, VGS = 12V

4

8

Ω

Lower Drive Source

RLGATE

VDS = 1V, VGS = 12V

4

8

Ω

Lower Drive Sink

RLGATE

VDS = 1V, VGS = 12V

3

5

Ω

Error Amplifier

※

E/A Transconductance

gm

2.5

u A/V

※

DC Gain

A0

85

*

dB

※

: Design Guarantee

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