TPS61054_08 Datasheet, PDF (6/27 Pages) Texas Instruments – HIGH POWER WHITE LED DRIVER 2-MHz SYNCHRONOUS BOOST CONVERTER WITH STANDARD LOGIC INTERFACE

TPS61054, TPS61055
SLUS760A – SEPTEMBER 2007 – REVISED MAY 2008 .................................................................................................................................................. www.ti.com
TIMER BLOCK DIAGRAM
LED CURRENT CONTROL
0
0
1
1
Tx-TOFF
0
1
0
1
ILED
Torch Current
Torch Current
Flash Current
Torch Current
MODE0
MODE1
FLASH_SYNC
400 kW
Edge Detect
400 kW
Tx-TOFF
LED CURRENT CONTROL
0: TORCH CURRENT LEVEL
1: FLASH CURRENT LEVEL
2 MHz CLOCK
Start
30.5 Hz
16-bit Prescaler
Safety Timer
t_STIM
122 Hz
Duty-Cycle Generator (6.3%)
LED ON/OFF CONTROL
0: LED OFF
1: TORCH CURRENT LEVEL
PARAMETER MEASUREMENT INFORMATION
L
2.2 µH
VIN
CIN
P
P
TPS6105x
SW
SW
AVIN
VOUT
LED
MODE1
MODE0
Tx-TOFF
FLASH_SYNC
AGND
PGND
PGND
C _OUT
10 µF
P
P
List Of Components:
- L = Wuerth Elektronik WE-PD S Series
- C_IN = C_OUT = TDK C1605X5R0J106MT
6
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