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BD9122GUL-E2 Datasheet(PDF) 1 Page - Rohm |
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BD9122GUL-E2 Datasheet(HTML) 1 Page - Rohm |
1 / 19 page www.rohm.com TSZ02201-0J3J0AJ00110-1-2 © ROHM Co., Ltd. All rights reserved. 1/17 02.MAR.2012 Rev.001 TSZ22111・14・001 Datasheet 2.5V to 5.5V, 0.3A 1ch Synchronous Buck Converter integrated FET BD9122GUL ●General Description ROHM’s high efficiency step-down switching regulator (BD9122GUL) is a power supply designed to produce a low voltage including 1 volts from 5/3.3 volts power supply line. Offers high efficiency with our original pulse skip control technology and synchronous rectifier. Employs a current mode control system to provide faster transient response to sudden change in load. ●Features ■ Offers fast transient response with current mode PWM control system. ■ Offers highly efficiency for all load range with synchronous rectifier (Nch/Pch FET) and SLLMTM (Simple Light Load Mode) ■ Incorporates soft-start function. ■ Incorporates thermal protection and ULVO functions. ■ Incorporates short-current protection circuit with time delay function. ■ Incorporates shutdown function ●Key Specifications Input voltage range: 2.5V to 5.5V Output voltage range: 1.0V to 2.0V Output current: 0.3A (Max.) Switching frequency: 1MHz(Typ.) Pch FET ON resistance: 0.3Ω(Typ.) Nch FET ON resistance: 0.2Ω(Typ.) Standby current: 0μA (Typ.) Operating temperature range: -25℃ to +85℃ ●Package VCSP50L2: 2.50mm x 1.10mm x 0.55mm ●Applications Power supply for LSI including DSP, Micro computer and ASIC ●Typical Application Circuit Fig.1 Typical Application Circuit GND,PGND SW VCC,PVCC EN VOUT ITH VCC VOUT Cin RITH CITH L ESR CO RO VOUT ○ Product structure:Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays. |
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