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ML4864CR, ML4865, ML4865C2

Table of contents:
Info of ML4864CR
Info of ML4865
Info of ML4865C2

ML4864CR, ML4865, ML4865C2 Selling Leads, Datasheet

MFG:ML Package Cooled:SSOP20 D/C:06+

ML4864CR, ML4865, ML4865C2 Datasheet download

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Part Number: ML4864CR

MFG: ML

Package Cooled: SSOP20

D/C: 06+

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ML4865 General Description

The ML4865 is a high voltage, continuous conduction boost regulator designed for DC to DC conversion in multiple cell battery powered systems. Continuous conduction allows the regulator to maximize output current for a given inductor. The maximum switching frequency can exceed 200kHz, allowing the use of small, low cost inductors. The ML4865 is capable of start-up with input voltages as low as 1.8V and generates a 12V output with output voltage accuracy of ±4%.

Unlike most boost regulators, the ML4865 isolates the load from the battery when the SHDN pin is high. 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 ML4865 requires only one inductor and two capacitors to build a very small regulator circuit capable of achieving conversion efficiencies approaching 90%.

ML4865 Maximum Ratings

Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied.
Voltage on any Pin ............................ GND 0.3V to 16.5V
Peak Switch Current (I_PEAK) ......................................... 2A
Average Switch Current (I_AVG) ..................................... 1A
Junction Temperature .............................................. 150ºC
Storage Temperature Range ................... 65ºC to 150ºC
Lead Temperature (Soldering, 10 sec) .................... 150ºC
Thermal Resistance (_JA) .................................... 160ºC/W
Temperature Range
ML4865CS-2 ................................................. 0ºC to 70ºC
ML4865ES-2 ............................................ 20ºC to 70ºC
V_IN Voltage Range
Without external rectifier ................................. 1.8V to 6V
With external rectifier .....................................1.8V to 10V

ML4865 Features

·Guaranteed full load start-up and operation at 1.8V input
·Continuous conduction mode for high output current
·Very low quiescent current
·Pulse frequency modulation and internal synchronous rectification for high efficiency
·Maximum switching frequency > 200kHz
·Minimum external components
·Low ON resistance internal switching FETs
·Fixed 12V output can be adjusted to lower output voltages

ML4865 Connection Diagram

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