Product Description
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DESCRIPTION The LTM?4615 is a complete 4A dual output switching mode DC/DC power supply plus an additional 1.5A VLDO (very low dropout) linear regulator. Included in the package are the switching controllers, power FETs, inductors, a 1.5A regulator and all support components. The dual 4A DC/DC converters operate over an input voltage range of 2.375V to 5.5V, and the VLDO operates from a 1.14V to 3.5V input. The LTM4615 supports output voltages ranging from 0.8V to 5V for the DC/DC converters, and 0.4V to 2.6V for the VLDO. The three regulator output voltages are set by a single resistor for each output. Only bulk input and output capacitors are needed to complete the design. FEATURES ■ Dual 4A Output Power Supply with 1.5A VLDO? ■ Short-Circuit and Overtemperature Protection ■ Power Good Indicators Switching Regulators Section—Current Mode Control ■ Input Voltage Range: 2.375V to 5.5V ■ 4A DC Typical, 5A Peak Output Current Each ■ 0.8V Up to 5V Output Each, Parallelable ■ ±2 Total DC Output Error ■ Output Voltage Tracking ■ Up to 95 Efficiency ■ Programmable Soft-Start VLDO Section n VLDO, 1.14V to 3.5V Input Range n VLDO, 0.4V to 2.6V, 1.5A Output n VLDO, 40dB Supply Rejection at fSW n ±1 Total DC Output Error n Small and Very Low Profile Package: 15mm × 15mm × 2.82mm APPLICATIONS ■ Telecom and Networking Equipment ■ Industrial Power Systems ■ Low Noise Applications ■ FPGA, SERDES Power |
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