Datasheet > SM74203

SM74203

更新时间： 2022-03-19 17:05:10

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
24页	544K
描述
SM74203 60V Low Side Controller for Boost and SEPIC

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数据手册

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SM74203 数据手册

Connection Diagram

30159353

10-Lead MSOP

NS Package Number MUB10A

Ordering Information

Part Number

SM74203MM

SM74203MMX

SM74203MME

NS Package Drawing

MUB10A

Supplied As

1000 Units on Tape and Reel

3500 Units on Tape and Reel

250 Units on Tape and Reel

MUB10A

Pin Descriptions

Pin(s)

Name

Description

Application Information

VIN

Source input voltage

Input to the start-up regulator. Operates from 6V to 60V.

Inverting input to the internal voltage error amplifier. The non-

inverting input of the error amplifier connects to a 1.25V

reference.

Feedback pin

Error amplifier output and PWM

comparator input

The control loop compensation components connect between

this pin and the FB pin.

COMP

Output of the internal, high voltage linear This pin should be bypassed to the GND pin with a ceramic

VCC

OUT

regulator.

capacitor.

Output of MOSFET gate driver

Connect this pin to the gate of the external MOSFET. The gate

driver has a 1A peak current capability.

GND

System ground

Set the start-up and shutdown levels by connecting this pin to the

input voltage through a resistor divider. A 20 µA current source

provides hysteresis.

UVLO

Input Under-Voltage Lock-out

Current Sense input

Input for the switch current used for current mode control and for

current limiting.

An external resistor connected from this pin to GND sets the

oscillator frequency. This pin can also accept an AC-coupled

input for synchronization from an external clock.

Oscillator frequency adjust pin and

synchronization input

RT/SYNC

An external capacitor placed from this pin to ground will be

charged by a 10 µA current source, creating a ramp voltage to

control the regulator start-up.

Soft-start pin

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