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TPS61050 Datasheet(PDF) 1 Page - Texas Instruments |
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TPS61050 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 49 page VOUT AVIN SW C IN SW LED PGND PGND P P P AGND GPIO SDA SCL I2CI/F FLASH_SYNC L P TPS61050 2.2 H m C 10 F OUT m Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS61050, TPS61052 SLUS525A – MARCH 2007 – REVISED SEPTEMBER 2015 TPS6105x 1.2-A High-Power White LED Driver 2-MHz Synchronous Boost Converter With I2C Compatible Interface 1 Features 3 Description The TPS6105x device is based on a high-frequency 1 • Four Operational Modes synchronous-boost topology with constant current – Torch and Flash up to ILED = 1200 mA sink to drive single white LEDs. The device uses an – Voltage-Regulated Boost Converter: 4.5 V, 5 inductive fixed-frequency PWM control scheme using V, and 5.25 V small external components, minimizing input ripple current. – Shutdown: 0.3 μA (Typical) The 2-MHz switching frequency allows the use of • Total Solution Circuit Area < 25 mm2 small and low profile 2.2- μH inductors. To optimize • Up to 96% Efficiency overall efficiency, the device operates with only a • I2C-Compatible Interface up to 400 kbps 250-mV LED feedback voltage. • Integrated LED Turnon Safety Timer The TPS6105x device not only operates as a • Zero Latency TX-Masking Input (TPS61050) regulated current source, but also as a standard • Hardware Voltage Mode Selection Input voltage-boost regulator. This additional operating mode can be useful to supply other high-power (TPS61052) devices in the system, such as a hands-free audio • Integrated ADC for LED VF Monitoring power amplifier, or any other component requiring a • Integrated Low Light Dimming Mode supply voltage higher than the battery voltage (refer • LED Disconnect During Shutdown to TPS61052). • Open and Shorted LED Protection For highest flexibility, the LED current or the desired • Overtemperature Protection output voltage can be programmed through an I2C compatible interface. To simplify flash • Available in a 12-Pin NanoFree™ (CSP) and synchronization with the camera module, the device 10-Pin QFN Packaging offers a trigger pin (FLASH_SYNC) for fast LED turnon time. 2 Applications When the TPS6105x is not in use, it can be put into • Camera White LED Torch/Flash for Cell Phones, shutdown mode through the I2C-compatible interface, Smart-Phones and PDAs reducing the input current to 0.3 μA (typical). During • Audio Amplifier Power Supply shutdown, the LED pin is high impedance to avoid leakage current through the LED. Typical Application Schematic Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) VSON (10) 3.00 mm × 3.00 mm TPS61050 TPS61052 DSBGA (12) 1.96 mm × 1.46 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
Número de pieza similar - TPS61050_15 |
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Descripción similar - TPS61050_15 |
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