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TPS61140 датащи(PDF) 1 Page - Texas Instruments |
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TPS61140 датащи(HTML) 1 Page - Texas Instruments |
1 / 24 page www.ti.com FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION Vin GND SEL V SELI ISET L1 10 H m IFB VFB Vout Iout SW R3 R1 R2 C1 4.7 F m C2 4.7 F m C3 1 F m 3 V to 6 V Input TPS61140 TPS61141 SLVS624A – JANUARY 2006 – REVISED FEBRUARY 2006 DUAL OUTPUT BOOST REGULATOR USING SINGLE INDUCTOR • 3V to 6 V Input Voltage Range The TPS61140/1 is a dual output boost converter IC. It is intended to be configured as a highly integrated • Two Outputs Each up to 27 V power solution providing regulated voltage and • 0.7 A Integrated Switch current output with one boost converter. This device • Built-in Power Diode is ideal for driving the OLED sub display and WLED • 1.2 MHz PWM for WLED Driver backlight for the LCD main display in clam shell phones. The voltage and current can be individually • PFM for OLED Supply programmed through external resistors. There is a • Individually Programmable Output dedicated selection pin for each output, so the two • Input to Output Isolation outputs can be turned on separately or simultaneously. When only the voltage output is • Short-Circuit Protection enabled, the boost converter is controlled by pulse • Built-in Soft Start frequency modulation (PFM) in order to achieve high • Overvoltage Protection efficiency over a wide load range. If the current output is selected, the device adopts a 1.2 MHz pulse width • Up to 82% Efficiency modulation control (PWM) method in order to • Up to 30 kHz PWM Dimming Frequency maximize output current. Applying an external PWM • Available in a 10 Pin, 3 × 3 mm QFN Package signal to the select pin (SELI) reduces the output current thereby allowing WLED dimming. The TPS61140/1 has a built-in power MOSFET and • Clamshell Phone With OLED/LCD Screen power diode; thereby, eliminating the needs for any external active power components. In addition, the high switching frequency reduces the external inductor and capacitor sizes. Overall, the IC provides a highly compact solution with high efficiency and plenty of flexibility. 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 © 2006, 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. |
Аналогичный номер детали - TPS61140 |
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Аналогичное описание - TPS61140 |
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