CS51221 Ver la hoja de datos (PDF) - ON Semiconductor

Número de pieza

componentes Descripción

Fabricante

CS51221

Enhanced Voltage Mode PWM Controller

ON Semiconductor 

CS51221

PACKAGE PIN DESCRIPTION

Package

Pin

Pin #

Symbol

Function

1

GATE External power switch driver with 1.0 A peak capability. Rail to rail output occurs when the capacitive load is

between 470 pF and 10 nF.

2

ISENSE Current sense comparator input.

3

SYNC Bidirectional synchronization. Locks to highest frequency.

4

FF

PWM ramp.

5

UV

Undervoltage protection monitor.

6

OV

Overvoltage protection monitor.

7

RTCT Timing resistor RT and capacitor CT determine oscillator frequency and maximum duty cycle, DMAX.

8

ISET

Voltage at this pin sets pulse−by−pulse overcurrent threshold.

9

VFB

Feedback voltage input. Connected to the error amplifier inverting input.

10

COMP Error amplifier output.

11

SS

Charging external capacitor restricts error amplifier output voltage during the power up or fault conditions.

12

LGND Logic ground.

13

VREF 3.3 V reference voltage output. Decoupling capacitor can be selected from 0.01 mF to 10 mF.

14

VCC

Logic supply voltage.

15

PGND Output power stage ground.

16

VC

Output power stage supply voltage.

http://onsemi.com

6

Share Link: