Datasheet

Voltage
Regulator
VCC
Switch
Control logic
V
IN
VCC
-
+
1.2V
DIM
VREF
IADJ
LED-
LED+
GND
EP
4.5V to 60V
3 k
47 PH
1 PF
0.33 PF
C
IN
1,2
7
4
6
5
3
4
High power LED Array
TPS92551, TPS92551EVM
www.ti.com SNVS805C –MAY 2012–REVISED MAY 2013
BLOCK DIAGRAM
OPERATION DESCRIPTION
The TPS92551 is a high power floating buck LED driver with wide input voltage range. It requires no external
current sensing elements and loop compensation network. The integrated power switch enables high output
power up to 23W with 450mA LED current.
High speed dimming control input allows precision and high resolution brightness control for applications which
require fine brightness adjustment.
Copyright © 2012–2013, Texas Instruments Incorporated Submit Documentation Feedback 11
Product Folder Links: TPS92551 TPS92551EVM