ML4842CS1, ML4842CS2, ML4851 Selling Leads, Datasheet
MFG:FAIRCHILD Package Cooled:SOIC16 D/C:05+
ML4842CS1, ML4842CS2, ML4851 Datasheet download
Part Number: ML4842CS1
MFG: FAIRCHILD
Package Cooled: SOIC16
D/C: 05+
ML4842CS1, ML4842CS2, ML4851
- Table of contents:
Info of ML4842CS1
Info of ML4842CS2
Info of ML4851
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About ML40123N
PDF/DataSheet Download
Datasheet: ML40123N
File Size: 108913 KB
Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]
Download : Click here to Download
About ML40123N
PDF/DataSheet Download
Datasheet: ML40123N
File Size: 108913 KB
Manufacturer: MITSUBISHI [Mitsubishi Electric Semiconductor]
Download : Click here to Download
About ML4851CS-3
PDF/DataSheet Download
Datasheet: ML4851CS-3
File Size: 293856 KB
Manufacturer: MICRO-LINEAR [Micro Linear Corporation]
Download : Click here to Download
ML4851 General Description
The ML4851 is a low power boost regulator designed for DC to DC conversion in 1 to 3 cell battery powered systems. The maximum switching frequency can exceed 100kHz, allowing the use of small, low cost inductors.
The combination of BiCMOS process technology, internal synchronous rectification, variable frequency operation, and low supply current make the ML4851 ideal for 1 cell applications. The ML4851 is capable of start-up with input voltages as low as 1V and is available in 5V and 3.3V output versions with output voltage accuracy of ±3%.
An integrated synchronous rectifier eliminates the need for an external Schottky diode and provides a lower forward voltage drop, resulting in higher conversion efficiency. In addition, low quiescent battery current and variable frequency operation result in high efficiency even at light loads. The ML4851 requires only one inductor and two capacitors to build a very small regulator circuit capable of achieving conversion efficiencies in excess of 90%.
The circuit also contains a RESET output which goes low when the IC can no longer function due to low input voltage, or when the DETECT input drops below 200mV.
ML4851 Maximum Ratings
VOUT ........................................................................................ 7V
Voltage on any other pin ...................GND 0.3V to VOUT + 0.3V
Peak Switch Current, I(PEAK) ....................................................1A
Average Switch Current, I(AVG) ......................................... 250mA
Junction Temperature ........................................................ 150ºC
Storage Temperature Range .............................. 65ºC to 150ºC
Lead Temperature (Soldering 10 sec.) ............................... 260ºC
Voltage on any other pin ...................GND 0.3V to VOUT + 0.3V
Peak Switch Current, I(PEAK) ....................................................1A
Average Switch Current, I(AVG) ......................................... 250mA
Junction Temperature ........................................................ 150ºC
Storage Temperature Range .............................. 65ºC to 150ºC
Lead Temperature (Soldering 10 sec.) ............................... 260ºC
ML4851 Features
Guaranteed full load start-up and operation at 1V input
Maximum switching frequency > 100kHz
Pulse Frequency Modulation (PFM) and internal synchronous rectification for high efficiency
Minimum external components
Low ON resistance internal switching FETs
Micropower operation
5V and 3.3V output versions
Maximum switching frequency > 100kHz
Pulse Frequency Modulation (PFM) and internal synchronous rectification for high efficiency
Minimum external components
Low ON resistance internal switching FETs
Micropower operation
5V and 3.3V output versions
ML4851 Connection Diagram
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