BD91501MUV-GE2 ROHM

Datasheet 2.55V/0.4A 1.8V/0.3A Output 2ch Synchronous Buck Converter Integrated FET BD91501MUV Key Specifications Description Input voltage range: 2.55V to 5.5V ROHMs buck converter BD91501MUV is a 2ch output Output volatage: 1.8V,2.55V power supply designed to produce a low voltage Output voltage accuracy 1.5% including 2.55V/0.4A and 1.8V/0.3A from 3.3V power Switching frequency: 1.65MHz20% supply line. Offers high efficiency with our original Low Voltage Detection: 50%(Typ.) Maximum on duty: 100% pulse skip control technology and synchronous rectifier. Operating temperature range: -30 to +105 Employs a current mode control system to provide faster transient response to sudden change in load. Package (Typ.) (Typ.) (Max.) VQFN016V3030: 3.00mm 3.00 1.00mm Features Offers fast transient response with current mode PWM control system. Offers highly efficiency for all load range with TM synchronous rectifier (Pch/Nch FET) and SLLM (Simple Light Load Mode) Incorporates soft start function Incorporates thermal protection and UVLO function Incorporates short-current protection with timer latch Incorporates shutdown function Icc=0A (Typ.) Full 100% Duty function 2ch output power supply (2.55V, 1.8V) VQFN016V3030 2ch output ON/OFF individual control Employs small surface mount package: VQFN016V3030 Typical Application Circuit Usage Power supply for LSI including DSP, DDR(RAM), Micro computer and ASIC L1 V AV IN CC SW1 V OUT1 PV CC1 FB1 PV CC2 L2 BD91501MUV V OUT2 SW2 FB2 Enable1 EN1 Enable2 EN2 Figure.1 Typical Application Circuit Product structureSilicon monolithic integrated circuit This product is not designed protection against radioactive rays. www.rohm.com TSZ02201-0J3J0A900260-1-2 2012 ROHM Co., Ltd. All rights reserved. 1/22 31.Aug.2012 Rev.001 TSZ2211114001 Datasheet BD91501MUV Pin ConFigureuration(TOP VIEW) AGND N.C. N.C. AVCC 10 12 11 9 13 8 ITH1 ITH2 7 FB1 14 FB2 6 15 EN2 EN1 5 SW2 16 SW1 1 2 3 4 PGND2 PVCC2 PVCC1 PGND1 Figure.2 Pin ConFigureuration Pin Description Pin Pin Pin Pin Pin Function Pin Function No. No. name name Analog VCC pin 1 PGND2 Ch2 Low side source pin 9 AVCC Non connection (Please connect to AGND) 2 PVcc2 Ch2 High side source pin 10 N.C. Non connection (Please connect to AGND) 3 PVcc1 Ch1 High side source pin 11 N.C. Analog GND pin 4 PGND1 Ch1 Low side source pin 12 AGND Ch2 gm amplifier output pin 5 SW1 Ch1 Pch/Nch FET drain output pin 13 ITH2 /Connected phase compensation capacitor Ch2 Output voltage detect pin 6 EN1 Ch1 Enable pin (High Active) 14 FB2 Ch2 Enable pin (High Active) 7 FB1 Ch1 Output voltage detect pin 15 EN2 Ch1 gm amplifier output pin 8 ITH1 16 SW2 Ch2 Pch/Nch FET drain output pin /Connected phase compensation capacitor Block Diagram gm Amp gm Amp AGND Figure.3 Block Diagram www.rohm.com TSZ02201-0J3J0A900260-1-2 2012 ROHM Co., Ltd. All rights reserved. 2/22 31.Aug.2012 Rev.001 TSZ2211115001