TB7109F Description
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...
TB7109F Key Features
- Output current: DC-DC Converter section IOUT1 = 500mA(max.) Series Regulator section IOUT2 = 400mA(max.)
- High efficiency: DC-DC Converter section η = 95% (typ.) (@VIN1 =
- Operating input voltage range: VIN1 = 8V to 27V
- On-state resistance: RDS(ON) = 0.7Ω (high-side) typical (@VIN1 = 24V, Tj = 25℃)
- Oscillation frequency: fOSC = 400kHz (typ.)
- Reference voltage: VREF = 1.215V ± 2.9% (@Tj = 25°C)
- Housed in a small surface-mount package (SOP Advance) with a low thermal resistance
- Soft-start feature
- Overcurrent protection: fold buck type for the Series Regulator section
- Driver