TB62763FMG Datasheet, PDF (1/15 Pages) Toshiba Semiconductor – Step Up Type DC/DC Converter for White LED

TOSHIBA BiCD Integrated Circuit Silicon Monolithic
TB62763FMG
Step Up Type DC/DC Converter for White LED
TB62763FMG
The TB62763FMG is a high efficient Step-Up Type DC/DC
Converter specially designed for constant current driving of White
LED.
This IC can drive 2-6 Hi-current type white LEDs connected series
using a Li-ion battery.
This IC contains N-ch MOS-FET Transistor for Coil-Switching, and
LED current (IF) is set with an external resistor.
This IC is especially for driving back light white LEDs in LCD of
PDA, Cellular Phone, or Handy Terminal Equipment.
SON8-P-0.65
Weight : 0.017 g (Typ.)
Features
• Variable LED current IF is set with a external resistor: 80mA (typ.)
• High current accuracy: +/- 1.5%
• High output power : 3W LED loading @(VOUT=20V, VIN=5V)
• High efficiency: 80% over (using recommended external parts and recommended circuit condition)
• Output over voltage shutdown function
: Switching operation is shut downed when OVP terminal voltage is over 32.5 V (typ.).
• Soft start function included
• Adjustable switching frequency (200kHz-2MHz)
• Package : SON8-P-0.65
Pin Assignment (top view)
SW ¹
OVP ²
FB ³
SS ⁴
8 _GND
7 _FSET
6 _VIN
5 _EN
Week 1 to 26
SW ¹
OVP ²
FB ³
SS ⁴
8 _GND
7 _FSET
6 _VIN
5 _EN
Week 27 to 53
Note:This IC could be destroyed in some case if amounted in 180° inverse direction.
Please be careful about IC direction in mounting.
1
2015-02-27