Texas Instruments TPS61050-269 Evaluation Board TPS61050EVM-269 TPS61050EVM-269 TPS61050EVM-269 Datenbogen
Produktcode
TPS61050EVM-269
www.ti.com
FUNCTIONAL BLOCK DIAGRAM
Undervoltage
Lockout
Bias Supply
AVIN
VOUT
SW
LED
REF
Bandgap
SCL
SDA
AGND
PGND
FLASH_SYNC
CURRENT
CONTROL
CONTROL
LED Current Regulator
P
P
P
SENSE FB
S
Ramp
Compensation
Control
Logic
COMPARATOR
ERROR
AMPLIFIER
OVP
COMPARATOR
GPIO or ENVM
VOLTAGE
REGULATION
REGULATION
CURRENT
REGULATION
Control
Logic
DAC
3-bit
ADC
+
-
V
= 1.22 V
REF
V
REF
2 MHz
Oscillator
D = k*(VOUT-LED)
ON/OFF
Max t
Timer
ON
2
I C I/F
SLUS525 – MARCH 2007
6