TB62731FUG Datasheet, PDF (2/17 Pages) Marktech Corporate – Step-up DC-DC Converter for White LED Driver

Block Diagram
V_CC
A
OSC
350 kHz
SHDN
STB
S _RQ
Buffer
REF
i (add)
A
i (sub)
TB62731FUG
K
GND
GND
Pin Functions
No
Symbol
Function
1
K
Pin connecting LED cathode to resistor used to set current.
Feedback pin for voltage waveforms for controlling the LED constant current.
2, 5
GND Ground pin for the logic
3
SHDN
IC enable pin.
Low, Standby Mode takes effect and pin A is turned off.
4
V_CC
Input pin for power supply for operating the IC.
Operating voltage range: 3.0~5.5 V
6
A
DC-DC converter switch pin.
The switch is an N-channel MOSFET transistor.
Note: Connect both GND pins to ground.
2
2004-09-14