STCS1APHR datasheet(1/19 Pages) STMICROELECTRONICS

Il numero della parte	STCS1APHR

Spiegazioni elettronici	1.5 A max constant current LED driver

PDF	19 Pages

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

Homepage	http://www.st.com

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1 / 19 page

July 2008

Rev 2

1/19

19

STCS1A

1.5 A max constant current LED driver

Features

■ Up to 40 V input voltage

■ Less than 0.5 V voltage overhead

■ Up to 1.5 A output current

■ PWM dimming pin

■ Shutdown pin

■ LED disconnection diagnostic

■ Slope control with external cap

Applications

■ LED constant current supplying for varying

input voltages

■ Low voltage lighting

■ Small appliances LED lighting

■ Car LED lights

Description

The STCS1A is a BiCMOS constant current

source designed to provide a precise constant

current starting from a varying input voltage

source. The main target is to replace discrete

components solution for driving LEDs in low

voltage applications such as 5 V, 12 V or 24 V

giving benefits in terms of precision, integration

and reliability.

The current is set with external resistor up to 1.5

A with a ± 10 % precision; a dedicated pin allows

implementing PWM dimming. An external

capacitor allows setting the slope for the current

rise from tens of microseconds to tens of

milliseconds allowing reduction of EMI.

An open-drain pin output provides information on

load disconnection condition.

Power SO-8

DFN8 (3 x 3 mm)

Table 1.

Device summary

Order codes

Packages

Packaging

STCS1APUR

DFN8 (3 x 3 mm)

3000 parts per reel

STCS1APHR

Power SO-8

2500 parts per reel

www.st.com

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