STCS2 driver Datasheet

STCS2 Datasheet PDF, Equivalent


Part Number

STCS2

Description

2A max constant current LED driver

Manufacture

STMicroelectronics

Total Page 16 Pages
Datasheet
Download STCS2 Datasheet


STCS2
STCS2
2 A max constant current LED driver
Features
Up to 40 V input voltage
Less than 0.5 V voltage overhead
Up to 2 A output current
PWM dimming pin
Shutdown pin
LED disconnection diagnostic
Applications
LED constant current supplying for varying
input voltages
Low voltage lighting
Small appliances LED lighting
Car LED lights
Description
The STCS2 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.
10
1
PowerSO-10
The current is set with external resistor up to 2 A
with a ± 10 % precision; a dedicated pin allows
implementing PWM dimming.
An open-drain pin output provides information on
load disconnection condition.
Table 1.
Device summary
Order code
STCS2SPR
July 2008
Package
PowerSO-10
Rev 4
Packaging
600 parts per reel
1/16
www.st.com
16

STCS2
Contents
Contents
STCS2
1 Application diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7 Detail description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.1 Current setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.2 Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.3 PWM dimming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.4 Diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
8 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
8.1 Reverse polarity protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
8.2 Thermal considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
9 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2/16


Features STCS2 2 A max constant current LED drive r Features ■ Up to 40 V input voltag e ■ Less than 0.5 V voltage overhead ■ Up to 2 A output current ■ PWM di mming pin ■ Shutdown pin ■ LED disc onnection diagnostic Applications ■ L ED constant current supplying for varyi ng input voltages ■ Low voltage light ing ■ Small appliances LED lighting Car LED lights Description The STCS2 is a BiCMOS constant current source de signed to provide a precise constant cu rrent starting from a varying input vol tage source. The main target is to repl ace discrete components solution for dr iving LEDs in low voltage applications such as 5 V, 12 V or 24 V giving benefi ts in terms of precision, integration a nd reliability. 10 1 PowerSO-10 The cu rrent is set with external resistor up to 2 A with a ± 10 % precision; a dedi cated pin allows implementing PWM dimmi ng. An open-drain pin output provides i nformation on load disconnection condit ion. Table 1. Device summary Order code STCS2SPR July 2008 Package PowerSO-10 Re.
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