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LED driver. STCS1PUR Datasheet

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LED driver. STCS1PUR Datasheet






STCS1PUR driver. Datasheet pdf. Equivalent




STCS1PUR driver. Datasheet pdf. Equivalent





Part

STCS1PUR

Description

1.5A max constant current LED driver

Manufacture

STMicroelectronics

Datasheet
Download STCS1PUR Datasheet


STMicroelectronics STCS1PUR

STCS1PUR; STCS1 1.5 A max constant current LED dri ver Features ■ Up to 40 V input volt age ■ Less than 0.5 V voltage overhea d ■ Up to 1.5 A output current ■ PW M dimming pin ■ Shutdown pin ■ LED disconnection diagnostic Applications Supplying LEDs with constant current for varying input voltages ■ Low vol tage lighting ■ Small appliance LED l ighting ■ Car LED lights Description.


STMicroelectronics STCS1PUR

The STCS1 is a BiCMOS constant current source designed to provide a precise co nstant current starting from a varying input voltage source. The main target i s to replace discrete components soluti on for driving LEDs in low voltage appl ications such as 5 V, 12 V or 24 V givi ng benefits in terms of precision, inte gration and reliability. DFN8 (3x3 mm) PowerSO-8 The c.


STMicroelectronics STCS1PUR

urrent is set with external resistor up to 1.5 A with a ± 10 % precision; a de dicated pin allows implementing PWM dim ming. An open-drain pin output provides information on load disconnection cond ition. Table 1. Device summary Order codes STCS1PUR STCS1PHR July 2008 Pac kages DFN8 (3 x 3 mm) PowerSO-8 Rev 8 Packaging 3000 parts per reel 2500 part s per reel 1/17 w.



Part

STCS1PUR

Description

1.5A max constant current LED driver

Manufacture

STMicroelectronics

Datasheet
Download STCS1PUR Datasheet




 STCS1PUR
STCS1
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
Applications
Supplying LEDs with constant current for
varying input voltages
Low voltage lighting
Small appliance LED lighting
Car LED lights
Description
The STCS1 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.
DFN8 (3x3 mm)
PowerSO-8
The current is set with external resistor up to 1.5
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 codes
STCS1PUR
STCS1PHR
July 2008
Packages
DFN8 (3 x 3 mm)
PowerSO-8
Rev 8
Packaging
3000 parts per reel
2500 parts per reel
1/17
www.st.com
17





 STCS1PUR
Contents
Contents
STCS1
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2/17





 STCS1PUR
STCS1
1
Application diagram
Figure 1. Typical application diagram for 0.5 A LED current
Application diagram
VIN
4.5V to 40V
BAT46ZFILM
RIN 100 ohm CBYP
0.1µF
ON
OFF
ON
OFF
VCC
DRAIN
PWM STCS1
EN
DISC
GND FB
CDRAIN
0.47µF
Load disconnection
(Open Drain output)
RFB
0.2 ohm
3/17



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