TPS61062 - 具有白光 LED 亮度控制电源的 24V、400mA 开关，1MHz 升压转换器

TPS61062是TI德州仪器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，本站介绍了TPS61062的封装应用图解、特点和优点、功能等，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 - 德州仪器

产品特性

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

产品应用

White LED Drivers
Cellular Phones
PDAs, Pocket PCs, and Smart Phones
Digital Still Cameras
Handheld Devices

产品说明

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.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPS61060, TPS61061, TPS61062	VSON (8)	3.00 mm × 3.00 mm
TPS61060, TPS61061, TPS61062	DSBGA (8)	1.446 mm × 1.446 mm

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