FAN5236_10 datasheet(7/19 Pages) FAIRCHILD

Part #	FAN5236

Description	Dual Mobile-Friendly DDR / Dual-Output PWM Controller

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

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FAN5236 • Rev. 1.3.2

7

Electrical Characteristics (Continued)

Symbol

Parameter

Conditions

Min.

Typ. Max.

Units

Power-Good Output and Control Pins

Lower Threshold

% of Set Point, 2µs Noise Filter

-86

-94

%

Upper Threshold

% of Set Point, 2µs Noise Filter

108

116

%

PG Output Low

IPG = 4mA

0.5

V

Leakage Current

VPULLUP = 5V

1

µA

PG2/REF2OUT Voltage

DDR = 1, 0mA < IREF2OUT ≤10mA

99.00

1.01

%

VREF2

DDR, EN Inputs

VINH

Input High

2

V

VINL

Input Low

0.8

V

FPWM Inputs

FPWM Low

0.1

V

FPWM High

FPWM Connected to Output

0.9

V

Block Diagram

REF2

PGOOD

EN

C

BOOT

Q1

Q2

5V

VDD

ADAPTIVE

GATE

CONTROL LOGIC

CURRENT PROCESSING

HDRV

SW

LDRV

PGND

BOOT

VDD

HYST

ISNS

VIN

C

OUT

V

OUT

PWM/HYST

PWM

S/ H

ILIM

R

SENSE

ILIM det.

HYST

SS

FPWM/VOUT

SS

DUTY

CYCLE

CLAMP

Σ

PWM

SR

Q

RAMP

MO

DDR

OSC

I

OU T

RAMP

CLK

OVP

POR/UVLO

Reference and

Soft Start

FPWM

L

OU T

VREF

EA

PWM/HYST

VSEN

FPWM/VOUT

VIN

DDR

Figure 4. IC Block Diagram

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FAN5236 Datasheet(PDF) 7 Page - Fairchild Semiconductor

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