深圳市中立信电子科技有限公司

MIC28515T-E/PHA

开关稳压器 75V/5A Hyper Speed Control Synchronous DC/DC Buck Regulator with External Mode Control

75V/5A Hyper Speed Control®  Synchronous DC/DC Buck Regulator with External Mode Control

General Description MIC28515T-E/PHA

The MIC28515T-E/PHA MIC28515 is an adjustable frequency, synchronous buck regulator that features a unique adaptive on-time control architecture. The MIC28515 operates over an input supply range of 4.5V to 75V, and provides a regulated output of up to 5A of output current. The output voltage is adjustable down to 0.6V with an accuracy of ±1%.

Features MIC28515T-E/PHA

• Hyper Speed Control® Architecture Enables:

- High Input to Output Voltage Conversion

Ratio Capability (VIN = 75V and VOUT = 0.6V)

- Small Output Capacitance

• 4.5V to 75V Input Voltage

• 5A Output Current Capability with up to 95% Efficiency

• Adjustable Output Voltage from 0.6V to 32V

• Selectable HLL or CCM operation

• ±1% FB Accuracy

• Any Capacitor™ Stable:

- Zero-ESR to High-ESR Output Capacitors

• 270 kHz to 800 kHz Adjustable Switching Frequency

• Internal Compensation

• Built-In 5V Regulator for Single-Supply Operation

• Auxiliary Bootstrap LDO for Improving System

Efficiency

• Internal Bootstrap Diode

• Programmable Current Limit

• Hiccup Mode Short-Circuit Protection

• Thermal Shutdown

• Supports Safe Start-Up into a Prebiased Output

• –40°C to +125°C Junction Temperature Range

• Available in 32-Pin, 6 mm x 6 mm VQFN Package