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TPS61090RSAR Fiches technique(PDF) 1 Page - Texas Instruments |
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TPS61090RSAR Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 25 page Actual Size (4,15 mm x 4,15 mm) www.ti.com FEATURES DESCRIPTION APPLICATIONS SW C1 10 µF L1 6.8 µH R1 R2 VBAT VOUT FB C2 2.2 µF C3 100 µF LBO PGND LBI SYNC EN GND TPS6109x e.g. 5 V up to 500 mA Low Battery Output R3 R4 R5 1.8 V to 5 V Input TPS61090 TPS61091, TPS61092 SLVS484A – JUNE 2003 – REVISED APRIL 2004 SYNCHRONOUS BOOST CONVERTER WITH 2A SWITCH • Synchronous (96% Efficient) Boost Converter The TPS6109x devices provide a power supply With 500-mA Output Current From 1.8-V Input solution for products powered by either a one-cell Li-Ion or Li-polymer, or a two-cell alkaline, NiCd or • Available in a 16-Pin QFN 4 x 4 Package NiMH battery and required supply currents up to or • Device Quiescent Current: 20-µA (Typ) higher than 1 A. The converter generates a stable • Input Voltage Range: 1.8-V to 5.5-V output voltage that is either adjusted by an external resistor divider or fixed internally on the chip. It • Adjustable Output Voltage Up to 5.5-V Fixed provides high efficient power conversion and is Output Voltage Options capable of delivering output currents up to 0.5 A at 5 • Power Save Mode for Improved Efficiency at V at a supply voltage down to 1.8 V. The im- Low Output Power plemented boost converter is based on a fixed • Low Battery Comparator frequency, pulse-width- modulation (PWM) controller using a synchronous rectifier to obtain maximum • Low EMI-Converter (Integrated Antiringing efficiency. Boost switch and rectifier switch are con- Switch) nected internally to provide the lowest leakage induct- • Load Disconnect During Shutdown ance and best EMI behavior possible. The maximum • Over-Temperature Protection peak current in the boost switch is limited to a value of 2500 mA. The converter can be disabled to minimize battery • All Single Cell Li or Dual Cell Battery, or USB drain. During shutdown, the load is completely dis- Powered Operated Products as MP-3 Player, connected from the battery. A low-EMI mode is PDAs, and Other Portable Equipment implemented to reduce ringing and, in effect, lower radiated electromagnetic energy when the converter enters the discontinuous conduction mode. The output voltage can be programmed by an exter- nal resistor divider or is fixed internally on the chip. The device is packaged in a 16-pin QFN 4 x 4 mm (16 RSA) package. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2003–2004, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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