Datasheet > SG3525

SG3525

更新时间： 2023-12-20 18:44:38

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		/
页数	文件大小	规格书
12页	934K
描述
电压模式PWM

阅读下载

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

SG3525 数据手册

SG2525A

SG3525A

REGULATING PULSE WIDTH MODULATORS

8 TO 35 V OPERATION

5.1 V REFERENCE TRIMMED TO ± 1 %

100 Hz TO 500 KHz OSCILLATOR RANGE

SEPARATE OSCILLATOR SYNC TERMINAL

ADJUSTABLE DEADTIME CONTROL

INTERNAL SOFT-START

PULSE-BY-PULSE SHUTDOWN

INPUT UNDERVOLTAGE LOCKOUT WITH

HYSTERESIS

DIP16

16(Narrow)

LATCHING PWM TO PREVENT MULTIPLE

PULSES

DUAL SOURCE/SINK OUTPUT DRIVERS

DESCRIPTION

The SG3525A series of pulse width modulator inte-

grated circuits are designed to offer improved per-

formance and lowered external parts count when

used in designing all types of switching power sup-

plies. The on-chip + 5.1 V reference is trimmed to ±

1 % and the input common-mode range of the error

amplifier includes the reference voltage eliminating

external resistors. A sync input to the oscillator al-

lows multiple units to be slaved or a single unit to be

synchronized to an external system clock. A single

resistor between the C_Tand the discharge terminals

provide a wide range of dead time ad- justment.

These devices also feature built-insoft-startcircuitry

with only an external timing capacitor required. A

shutdown terminal controls both the soft-start circu-

ity and the output stages, providing instantaneous

turn off through the PWM latch with pulsed shut-

down, as well as soft-start recycle with longer shut-

down commands. These functions are also control-

led by an undervoltage lockout which keeps the out-

puts off and the soft-start capacitor discharged for

sub-normal input voltages. This lockout circuitry in-

cludes approximately 500 mV of hysteresis for jitter-

free operation. Another feature of these PWM cir-

cuits is a latch following the comparator. Once a

PWM pulses has been terminated for any reason,

the outputs will remain off for the duration of the pe-

riod. The latch is reset with each clock pulse. The

output stages are totem-pole designs capable of

sourcing or sinking in excess of 200 mA. The

SG3525A output stage features NOR logic, giving a

LOW output for an OFF state.

PIN CONNECTIONS AND ORDERING NUMBERS

(top view)

Type

Plastic DIP

SG2525AN

SG3525AN

SO16

SG2525A

SG3525A

SG2525AP

SG3525AP

June 2000

1/12

12 3 4 5 6 7...12

下载PDF

与SG3525相关器件

型号	品牌	描述	获取价格	数据表
SG3525A	MICROSEMI	REGULATING PULSE WIDTH MODULATOR	获取价格
SG3525A	Linear	Regulating Pulse Width Modulators	获取价格
SG3525A	MOTOROLA	PULSE WIDTH MODULATOR CONTROL CIRCUITS	获取价格
SG3525A	ONSEMI	PULSE WIDTH MODULATOR CONTROL CIRCUITS	获取价格
SG3525A	STMICROELECTRONICS	REGULATING PULSE WIDTH MODULATORS	获取价格
SG3525A	MICROCHIP	The SG1525A/1527A series of pulse width modulator integrated circuit s are designed to off	获取价格