F72814 datasheet(7/16 Pages) FINTEK

Part #	F72814

Description	Synchronous Buck PWM DC-DC Controller

Download	16 Pages

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Manufacturer	FINTEK [Feature Integration Technology Inc.]

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

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7 / 16 page

F72814

V0.23P

-4-

F72814

PARAMETER

SYMBOL

TEST CONDITIONS

MIN.

TYP.

MAX.

UNIT

Dead time

TDT

2V to 2V, Loading =2A

10

100

ns

REFERENCE VOLTAGE

Reference voltage

VREF

VCC=5V, T= 25

0.784

0.8

0.816

V

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

1.67

u A/V

※

DC Gain

A0

85

*

dB

※

: Design Guarantee

6. Block Diagram

Control

Logic

Power On

Reset

Bias & Regulator

(VDD & V3VAA)

Comp

GM

UVP

300KHz Tri-OSC

Reference

Voltage

0.6V

0.8V

FB

OCSET

VDDA

PHASE

UGATE

LGATE

BOOT

VDDA

GND

0.4V

40uA

UV

OC

V3VAA

Comp

1.5V

VDD

0.15V

SD

PH_M

Comp

Figure 1

: Block Diagram

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