Document
M3TEK
IT7832
5V/2A High Efficiency Step-Down DC/DC Converter
Description
The IT7832 is a low-input voltage and high-output current synchronous-buck PWM converter and integrates with all required active components. Its’ operating input voltage ranges from 2.7V to 6V and output voltage ranges from VIN down to 0.8V. The switching frequency is adjustable ranging from 300kHz to 1.4MHz. High performance and externally compensation voltage error amplifier provides design flexibility and high performance under transient. In addition,it provides internal soft-start to reduce inrush-current, current-limit and thermal shutdown, preventing IC from being damaged. If the EN pin is floating, it will be pulled high by the internal circuit.
Features
2.7V to 6V Input Voltage Range 2A Output Current Typical Quiescent Current: 0.65mA 300kHz to 1.4MHz Adjustable Frequency Operation 0.8V to VIN Adjustable Output Voltage 100% Duty Cycle for Lowest Dropout 0% Duty Cycle External Compensation Internal Soft-Start Enable Internal Pull High. Thermal Shutdown Current-Limit and Short-Circuit Protection Package: SOP8L_EP, DFN3x3_10L RoHS Compliant (100% Green Available)
Applications
ASIC/DSP/µP/FPGA Core and I/O Voltages Networking and Telecommunications TV
Typical Applications
Figure 1. Typical Application Circuit
Efficiency(%)
Efficiency vs. Output Current at VIN=5V
100 90 80 70 60 50 40 30 20 10 0
0
200 400 600 800 1000 1200 1400 1600 1800 2000 Output Current (mA)
Rev. 0.1.9 www.m3tekic.com
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