TPS61062是TI公司的一款背光产品,TPS61062是具有白光 LED 亮度控制电源的 24V、400mA 开关,1MHz 升压转换器,本页介绍了TPS61062的产品说明、应用、特性等,并给出了与TPS61062相关的TI元器件型号供参考。
TPS61062 - 具有白光 LED 亮度控制电源的 24V、400mA 开关,1MHz 升压转换器 - 背光 - LED驱动器 - TI公司(Texas Instruments,德州仪器)
- LED Driver With Integrated Overvoltage and Short-Circuit Protection
- 2.7-V to 6-V Input Voltage Range
- 500-mV or 250-mV Feedback Voltage
- TPS61060 Powers up to 3 LEDs
- TPS61061 Powers up to 4 LEDs
- TPS61062 Powers up to 5 LEDs
- PWM Brightness Control on Enable
- Digital Brightness Control on ILED
- 1-MHz Fixed Switching Frequency
- 400-mA Internal Power MOSFET Switch
- LEDs Disconnected During Shutdown
- Operates With Small-Output Capacitors Down to 220 nF
- Up to 80% Efficiency
- 8-Pin NanoFree™ Package (Chipscale, CSP)
- 3-mm × 3-mm QFN Package
- White LED Drivers
- Cellular Phones
- PDAs, Pocket PCs, and Smart Phones
- Digital Still Cameras
- Handheld Devices
The TPS6106x is a high-frequency, synchronous boost converter with constant current output to drive up to five white LEDs. For maximum safety, the device features integrated overvoltage and an advanced short-circuit protection when the output is shorted to ground. The device operates with 1-MHz fixed switching frequency to allow for the use of small external components and to simplify possible EMI problems. The device comes with three different overvoltage protection thresholds (14 V, 18 V, and 23 V) to allow inexpensive and small-output capacitors with lower voltage ratings. The LED current is initially set with the external sense resistor Rs, and the feedback voltage is regulated to 500 mV or 250 mV, depending on the configuration of the ILED pin. Digital brightness control is implemented by applying a simple digital signal to the ILED pin. Alternatively, a PWM signal up to 1 kHz can be applied to the enable pin to control the brightness of the LED. During shutdown, the output is disconnected from the input to avoid leakage current through the LEDs.
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
---|---|---|
TPS61060, TPS61061, TPS61062 | VSON (8) | 3.00 mm × 3.00 mm |
DSBGA (8) | 1.446 mm × 1.446 mm |