TC7734FTG中文资料东芝数据手册PDF规格书

1. DESCRIPTION

TC7734FTG is a complete power supply solution for portable

devices that include 4 DCDC Buck Converters, 3 LDOs, 2-ch LED

Driver and built-in Switching Charger function. Most of the outputs

can be controlled by I2C bus for various programmable settings.

2. FEATURES

• Operating voltage: 3.4 V to 5.5 V • 4 ch DCDC converter (DCDC1 to DCDC4)  Synchronous Current Mode Buck Converters  DCDC1-4 Optional 2-Phase Switching Reduces Input Peak

Current

 Built-in compensation circuit: DCDC1 to DCDC4

• 3 ch LDO(LDO1 to LDO3)

• LED Driver

 Built-in Current Mode DCDC Boost Converter

 2-Ch Constant Current LED Driver

 Sink Current: up to 80 mA/ch with LED voltage up to 20 V

 Output Current Accuracy: +/- 5 (ILED = 20 mA)

 LED1 and LED2 Regulation Voltage: 0.4 V

 PWM dimming, I2C Controlled 32 steps with 195Hz fixed dimming frequency

 LED Driver Protection Circuit

 Over Voltage Detection (OVD)

 Output Open Detection (OOD)

 Output Short Detection (OSD)

• Battery Charger Function

 USB Host and USB Charger Adaptor Detections for Optimum Charge Current for SDP, CDP, DCP and Other)

 DCIN Input Over Voltage Protection (OVP): 5.8 V (typ.) * Maximum voltage of DCIN terminal is defined by 6 V.

 Power Path Function

 1.5 A Switching Charger with Built-in Power MOSFETs