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Part Number: ML4890CS-3_1055570
Description: The ML4890 is a high efficiency, PFM (Pulse Frequency Modulation), boost switching regulator connected...
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ML4890CS-3_1055570
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DataSheet
General Description
ML4890CS-3_1055570 General Description
The ML4890 is a high efficiency, PFM (Pulse Frequency Modulation), boost switching regulator connected in series with an integrated LDO (Low Dropout Regulator) that incorporates "Silent Switcher™" technology. This technique incorporates a patented tracking scheme to minimize the voltage drop across the LDO and increase the total efficiency of the regulator beyond that which can be obtained by using a discrete external LDO regulator.
The ML4890 is designed to convert single or multiple cell battery inputs to regulated output voltages for integrated circuits and is ideal for portable communications equipment that cannot tolerate the output voltage ripple normally associated with switching regulators.
An integrated synchronous rectifier eliminates the need for an external Schottky diode and provides a lower forward voltage drop, resulting in higher conversion efficiency.
ML4890CS-3_1055570 Maximum Ratings
VBOOST .....................................................................7V
Voltage on Any Other Pin ...GND 0.3V to VBOOST +0.3V
Peak Switch Current (IPEAK) .................................... 1A
Average Switch Current (IAVG) .......................... 500mA
LDO Output Current ...........................................250mA
Junction Temperature ...........................................150
Storage Temperature Range ............. 65 to +150
Lead Temperature (Soldering 10s).................... +260
Thermal Resistance (JA)
Plastic SOIC ....................................................110/W
Voltage on Any Other Pin ...GND 0.3V to VBOOST +0.3V
Peak Switch Current (IPEAK) .................................... 1A
Average Switch Current (IAVG) .......................... 500mA
LDO Output Current ...........................................250mA
Junction Temperature ...........................................150
Storage Temperature Range ............. 65 to +150
Lead Temperature (Soldering 10s).................... +260
Thermal Resistance (JA)
Plastic SOIC ....................................................110/W
ML4890CS-3_1055570 Features
` Incorporates "Silent Switcher™" technology to deliver very low output voltage ripple (typically 5mV)
` Guaranteed full load start-up and operation at 1.0V input and low operating quiescent current (<100A) for extended battery life
` Pulse Frequency Modulation and internal synchronous rectification for high efficiency
` Minimum external components
` Low ON resistance internal switching MOSFETs
` 5V, 3.3V, and 3V output versions
` Guaranteed full load start-up and operation at 1.0V input and low operating quiescent current (<100A) for extended battery life
` Pulse Frequency Modulation and internal synchronous rectification for high efficiency
` Minimum external components
` Low ON resistance internal switching MOSFETs
` 5V, 3.3V, and 3V output versions
ML4890CS-3_1055570 Connection Diagram
ML40123N
PDF/DataSheet Download
- Datasheet: ML40123N
- File Size: 108913 KB
- Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]
- Click here to Download
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