ML4825CQ 查看數據表（PDF） - Micro Linear Corporation

零件编号

产品描述 (功能)

生产厂家

ML4825CQ

High Frequency Power Supply Controller

Micro Linear Corporation 

ML4825

PIN CONFIGURATION

ML4825

16-Pin PDIP

16-Pin SOIC

INV 1

16 5.1V REF

NI 2

15

VCC

E/A OUT 3

14 OUT B

CLOCK 4

13

VC

RT 5

12 PWR GND

CT 6

11 OUT A

RAMP 7

10 GND

SS 8

9

ILIM/SD

TOP VIEW

ML4825

20-Pin PLCC

E/A OUT

CLOCK

NC

RT

CT

3 2 1 20 19

4

18

5

17

6

16

7

15

8

14

9 10 11 12 13

OUT B

VC

NC

PWR GND

OUT A

TOP VIEW

PIN DESCRIPTION (Pin number in parentheses is for PLCC version)

PIN NAME

FUNCTION

PIN NAME

1 (2) INV

Inverting input to error amp.

9 (12) ILIM/SD

2 (3) NI

Non-inverting input to error amp.

3 (4) E/A OUT Output of error amplifier and input

to main comparator

10 (13) GND

11 (14) OUT A

4 (5) CLOCK Oscillator output

FUNCTION

Current limit sense pin. Normally

connected to current sense resistor.

Analog signal ground

High current totem pole output. This

output is the first one energized after

power on reset

5 (7) RT

6 (8) CT

7 (9) RAMP

8 (10) SS

Timing resistor for oscillator—

sets charging current for oscillator

timing capacitor (pin 6)

Timing capacitor for oscillator

Non-inverting input to main

comparator. Connected to CT for

voltage mode operation or to current

sense resistor for current mode

Normally connected to soft start

capacitor

12 (15) PWR GND Return for the high current totem

pole outputs

13 (17) VC

Positive supply for the high current

totem pole output

14 (18) OUT B High current totem pole output

15 (19) VCC

16 (20) 5.1V REF

Positive supply for the IC

Buffered output for the 5.1V voltage

reference

2

Share Link: