Datasheet > STR5A451D

STR5A451D

更新时间： 2024-06-13 09:03:03

品牌	Logo	应用领域
三垦 - SANKEN		/
页数	文件大小	规格书
32页	900K
描述
For Non-Isolated Off-Line PWM Controllers with Integrated Power MOSFET

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中文翻译

获取价格

数据手册

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STR5A451D 数据手册

For Non-Isolated

Off-Line PWM Controllers with Integrated Power MOSFET

STR5A450 Series

Data Sheet

Description

Package

The STR5A450 Series is power ICs for switching

power supplies, incorporating a MOSFET and a current

mode PWM controller IC for non-isolated Buck

converter and Inverting converter topologies.

The operation mode is automatically changed, in

response to load, to the fixed switching frequency, to the

switching frequency control, and to the burst oscillation

mode. Thus the power efficiency is improved.

DIP8

S/OCP

D/ST

GND

VCC

The product achieves high cost-performance power

supply systems with few external components.

Not to scale

Features

Selection Guide

● Buck converter

● Inverting converter

● Electrical Characteristics

f_OSC(AVG)= 60 kHz (typ.)

V_D/ST= 650V (max.)

● Current mode type PWM control

● Automatically changed operation mode in response to

load conditions

I_OUT(MAX)

(Universal, open

frame, V_OUT= 24 V)

Fixed switching frequency mode, 60 kHz (typ.)

Green mode, 23 kHz (typ.) to 60 kHz (typ.)

Burst oscillation mode

● Built-in Startup Function

reducing power consumption, and shortening the

startup time

● Built-in Error Amplifier

● Random Switching Function

● Leading Edge Blanking Function

● Soft Start Function

● Protections

R_DS(ON)

Products

(max.)

STR5A451D

STR5A453D

4.0 Ω

1.9 Ω

0.7 A

0.9 A

* The output power is actual continues current that is

measured at 50 °C ambient. The peak output current

can be 120 to 140 % of the value stated here. Thermal

design affects the output current. It may be less than

the value stated here.

Overcurrent Protection (OCP): adjustabe by an

external current detection resistor, including OCP

input compensation function

Overload Protection (OLP): Auto-restart

Overvoltage Protection (OVP): Auto-restart

Thermal Shutdown with hysteresis (TSD): Auto-restart

Recommended Operating Condition

Buck

Converter

Inverting

Converter

Input Voltage

AC 85 V to AC 265 V

D/ST Input

Voltage

Output Voltage

Range*

≥ 40 V

Typical Application (Buck Convertor)

> 11 V

< 27.5 V

> – 27.5 V

< – 11 V

STR5A450D

D/ST

VCC

*Add a zener diode or a regulator to VCC pin when

target output voltage is high.

GND

R2 R3

Applications

D2 V_OUT

S/OCP

(+)

R_OCP

● White goods

VAC

● Auxiliary power supply (lighting equipment with

microcomputer, etc.)

● Power supply for motor control (actuator, etc.)

● Telecommunication equipment (convertible from

48VDC to 15VDC)

(-)

TC_STR5A450_1_R1

● Other Switchung mode power supply, SMPS

STR5A450-DSE Rev.1.1

Oct. 19, 2016

SANKEN ELECTRIC CO.,LTD.

http://www.sanken-ele.co.jp/en

12 3 4 5 6 7...32

中文翻译

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与STR5A451D相关器件

型号	品牌	获取价格	描述	数据表
STR5A453D	SANKEN	获取价格	Switching Controller, Current-mode, 67kHz Switching Freq-Max, PDIP8, ROHS COMPLIANT, DIP-8
STR5A464D	SANKEN	获取价格	Switching Controller, Current-mode, 67kHz Switching Freq-Max, PDIP7, ROHS COMPLIANT, DIP-8
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STR6020S	ETC	获取价格	STR6020S是日本三肯公司早期推出的一种适合于串联型开关电源的开关电源厚膜集成电路(主
STR-6131	SANKEN	获取价格	LOW POWER OFF-LINE SMPS PRIMARY SWITCHER
STR-6132	SANKEN	获取价格	LOW POWER OFF-LINE SMPS PRIMARY SWITCHER
STR-6151	SANKEN	获取价格	LOW POWER OFF-LINE SMPS PRIMARY SWITCHER
STR-6153E	SANKEN	获取价格	LOW POWER OFF-LINE SMPS PRIMARY SWITCHER

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