TCS4480
4 0Vin 8A 2 -Outputs Buck Converter
产品描述
TCS4480 is a Synchronous Buck Circuit with two current sense pins suitable for many multi-output applications. It is designed to allow for operating a wide supply voltage range from 4.5V to 40V.This IC can operate in both Constant Current (CC) and Constant Voltage (CV) modes.
TCS4480 operates as a Buck Circuit providing a wide range of outputs at Constant Voltage (CV) from 4.5V to 40V and the output current as high as 8A or above. It has a Constant
Current (CC) mode so that output current can be set externally and at an accuracy of ±4%.
The current mode control and external compensation makes feedback control have good line and load regulation with flexible external design.
主要特点
- Vin: 4.5V to 40V
- Vout: 1.2V to Vin*99.5%V; typical at 5V
- Low Dropout Operation: Maximum Duty Cycle at 99.5%
- Precision CC/CV Mode Control
- Burst/PFM Mode for Increased Light Load Efficiency
- 2 outputs independent Constant Current setting
- Hiccup mode when output voltage below 50% normal output voltage
- Protection:
- NMOS peak current limit: accuracy：~20%
- Output short protection: reduce input current to less than 20mA (RMS)
- Output FB OVP (125% VFB), only turn off High side MOS.
- Temperature shutdown (OTP)
- Adjustable Output Cable Resistance Compensation
- Switching Frequency: 125k+25k
- Integrated Power MOSFET
- QFN20L Package
典型应用图
