Datasheet > SM8314-50S

SM8314-50S

更新时间： 2024-01-16 18:42:08

品牌	Logo	应用领域
三合微科 - SAMHOP		/
页数	文件大小	规格书
11页	238K
描述
Switching Regulator/Controller

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数据手册

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SM8314-50S 技术参数

生命周期：	Contact Manufacturer	包装说明：	,
Reach Compliance Code：	unknown	风险等级：	5.77
Base Number Matches：	1

SM8314-50S 数据手册

SAMHOP Microelectronics Corp.

SM8314

150KHz, 4A PWM Buck Switching Regulator

ꢀ General Description

ꢀ Features

The SM8314 is a monolithic integrated circuit that

provide all the active functions for a step-down

switching regulator, capable of driving a 4A load

without additional transistor component. Requiring

a minimum number of external component, the

board space can be saved easily. The external

shutdown function can be controlled by TTL logic

level and then come into standby mode. The

internal compensation makes feedback control

have good line and load regulation without external

design. Regarding protected function, thermal

shutdown is to prevent over temperature operating

from damage, and current limit is against over

current operating of the output switch. The SM8314

operates at a switching frequency of 150Khz thus

allowing smaller sized filter components than what

would be needed with lower frequency switching

regulators. Other features include a guaranteed

+4% tolerance on output voltage under specified

input voltage and output load conditions, and +15%

on the oscillator frequency. The output version

included fixed 3.3V, 5V, 12V, and an adjustable

type. The packages are available in a standard

5-lead TO-220(T) package and a 5-lead TO-263(S).

- 3.3V, 5V, 12V and adjustable output versions

- Adjustable version output voltage range, 1.23V to

37V +4% max over line and load condition

- Available in TO220-5L and TO263-5L packages

- Voltage mode non-synchronous PWM control

- Thermal-shutdown and current-limit protection

- ON/OFF shutdown control input

- Input voltage range up to 40V

- Output load current: 4A

- 150 kHz fixed frequency internal oscillator

- Low power standby mode

- Built-in switching transistor on chip

ꢀ Applications

- Simple High-efficiency step-down(buck) regulator

- Efficient preregulator for linear regulators

- On-card switching regulators

- Positive to negative converter

- Battery Charger

ꢀPin Assignments

ꢀ Pin Descriptions

( Top View )

5 SD

4 FB

3 Gnd

2 Output

1 V_IN

Name

V_IN

Description

Operating voltage input

Switching output

Output

Gnd

Metal Tab GND

Ground

TO263-5L

Output voltage feedback control

ON/OFF Shutdown

( Top View )

5 SD

4 FB

3 Gnd

2 Output

1 V_IN

TO220-5L

V1.0 May 17 .2007

12 3 4 5 6 7...11

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