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TPS61301 Fiches technique(PDF) 1 Page - Texas Instruments |
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TPS61301 Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 77 page VOUT AVIN SW C I SW LED1 C O 10 mF PGND PGND AGND L 2.2 H m SDA SCL TPS61300 LED2 LED3 D2 2.5 V..5.5 V ENDCL FLASH_SYNC Tx- MASK GPIO/PG ENVM INDLED Privacy Indicator CAMERA ENGINE I2CI/F HC_SEL BAL FLASHREADY PHONEPOWERON 1.8 V D1 TPS61300 TPS61301 TPS61305, TPS61305A www.ti.com SLVS957D – JUNE 2009 – REVISED OCTOBER 2012 1.5A/4.1A Multiple LED Camera Flash Driver With I2CTM Compatible Interface Check for Samples: TPS61300, TPS61301, TPS61305, TPS61305A 1 FEATURES DESCRIPTION The TPS6130x device is based on a high-frequency 23 • Four Operational Modes synchronous boost topology with constant current – DC Light and Flashlight sinks to drive up to three white LEDs in parallel – Voltage Regulated Converter: 3.8V...5.7V (400mA/800mA/400mA maximum flash current). The extended high-current mode (HC_SEL) allows up – Standby: 2 μA (typ.) to 1025mA/2050mA/1025mA flash current out of • Storage Capacitor Friendly Solution the storage capacitor. • Automatic VF and ESR Calibration The high-capacity storage capacitor on the output of • Power-Save Mode for Improved Efficiency at the boost regulator provides the high-peak flash LED Low Output Power, Up to 95% Efficiency current, thereby reducing the peak current demand • Output Voltage Remains Regulated When from the battery to a minimum. Input Voltage Exceeds Nominal Output Voltage The 2-MHz switching frequency allows the use of • I2C Compatible Interface up to 3.4Mbits/s small and low profile 2.2 μH inductors. To optimize overall efficiency, the device operates with a 400mV • Zero Latency Tx-Masking Input LED feedback voltage. • Hardware Voltage Mode Selection Input (TPS61300, TPS61301) The TPS6130x device not only operates as a regulated current source, but also as a standard • DC Light Mode Selection Input voltage boost regulator. The device keeps the output (TPS61300, TPS61306) voltage regulated even when the input voltage • Hardware Reset Input (TPS61301, TPS61305) exceeds the nominal output voltage. The device • LED Temperature Monitoring (TPS61305) enters power-save mode operation at light load currents to maintain high efficiency over the entire • Privacy Indicator LED Output load current range. • Integrated LED Safety Timer To simplify flashlight synchronization with the camera • Total Solution Size of Less Than 25 mm2 module, the device offers a trigger pin (<1mm height) (FLASH_SYNC) for zero latency LED turn-on time. • Available in a 20-Pin NanoFree™ (CSP) APPLICATIONS • Single/Dual/Triple White LED Flashlight Supply for Cell Phones and Smart-Phones • LED Based Xenon "Killer" Flashlight • Audio Amplifier Power Supply Figure 1. Typical Application 1 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. 2 NanoFree is a trademark of Texas Instruments. 3 I2C is a trademark of NXP Semiconductors. PRODUCTION DATA information is current as of publication date. Copyright © 2009–2012, 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. |
Numéro de pièce similaire - TPS61301 |
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Description similaire - TPS61301 |
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