tb62731fug TOSHIBA Semiconductor CORPORATION, tb62731fug Datasheet - Page 2

• Manufacturer Part Number: tb62731fug
• Description: Step-up Dc-dc Converter For White Led Driver
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Block Diagram
Pin Functions
Note: Connect both GND pins to ground.
2, 5
No
1
3
4
6
Symbol
SHDN
GND
V
SHDN
K
A
CC
Pin connecting LED cathode to resistor used to set current.
Feedback pin for voltage waveforms for controlling the LED constant current.
Ground pin for the logic
IC enable pin.
Low, Standby Mode takes effect and pin A is turned off.
Input pin for power supply for operating the IC.
Operating voltage range: 3.0~5.5 V
DC-DC converter switch pin.
The switch is an N-channel MOSFET transistor.
350 kHz
REF
OSC
STB
GND
V
CC
i (add)
S
R
Q
i (sub)
Buffer
2
A
Function
GND
A
K
TB62731FUG
2006-06-14