EML3173-3.0A, Synchronous Step-Down DC-DC Converter DataSheet

General Description
    EML3173 is a high efficiency, DC-DC synchronous buck converter witch provides 3.0A output loading after output voltage reach preset voltage. EML3173 uses different modulation algorithms for various loading conditions. Under heavy load, EML3173 regulates the output voltage using Pulse Width Modulation (PWM). The PWM mode provides low output voltage ripple and fixed frequency noise. While in light load, it enters Power Skip Modulation (PSM) automatically to ensure a highly efficient operation at light load condition. Under very heavy load condition, or when the input voltage approaches the output voltage, EML3173 enters low dropout voltage operation under 100% duty cycle.
    The internal generated 0.8V precision feedback reference voltage is designed for low output voltage request. Low Power-FET Ron synchronous switch dramatically reduces conduction loss.
    The EML3173 is available in an 8-pin, space-saving E-SOP-8L package.

Features
􀂄 Wide Operating Voltage Ranges : 2.6V to 5.5V
􀂄 3.0A Output Current
􀂄 High efficiency Buck Power Converter
􀂄 Auto-select PSM/PWM (Mode=VCC)
􀂄 Force PWM (Mode=GND)
􀂄 Power Good Indicator
􀂄 LDO mode: duty cycle: 100%
􀂄 Synchronous Power Switches Rectification, no Schottky Diode Required
􀂄 1.4MHz Switching Frequency
􀂄 Internal Soft-Start
􀂄 Current Limit Protection
􀂄 Over Temperature Protection
􀂄 Output Shorting Protect
􀂄 Output Over Voltage Protection