TB7109F Datasheet (Toshiba)

TB7109F, Power supply IC

Pin No.

Symbol 1 LX 2 VIN1 3 VIN2 4 GND 5 VOUT2 6 VFB2 7 EN 8 VFB1 Description Switch pin This pin is connected to high-side P-channel MOSFET.

Input pin This pin is placed in the standby state if VEN=”L”.

Standby current is 70 μA(@VIN = 24V) or less.

Input pin for the Series Regul

TOSHIBA BiCD Integrated Circuit Silicon Monolithic TB7109F TB7109F Power supply IC for LNB The TB7109F is single chip power supply ICs for LNB that integrated buck DC-DC converter section utilizing a chopper circuit and series regulator section.

The TB7109F contains high-speed P-channel MOSFETs for the high side main switch to achieve high efficiency.

And series regulator section is fed into a overcurrent circuit of fold buck type, and it protects this product from the short circuit state of

TB7109F Features

* Output current: DC-DC Converter section IOUT1 = 500mA(max.) Series Regulator section IOUT2 = 400mA(max.) HSON8-P-0505-1.27 Weight: 0.068 g (typ.)

* High efficiency: DC-DC Converter section η = 95% (typ.) (@VIN1 = 24V, VOUT1 = 17V, IOUT1 = 300mA)

* Operating input voltag