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M51995FP

Features: •500kHz operation to MOS FET•Output current...............................................................±2A•Output rise time 60ns,fall time 40ns•Modified totempole output method with small through current Compact and light-weight power supply•Small start-u...

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SeekIC No. : 004405501 Detail

M51995FP: Features: •500kHz operation to MOS FET•Output current...............................................................±2A•Output rise time 60ns,fall time 40ns•Modified totempol...

M51995FP Data Sheet

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Part Number:
M51995FP
Supply Ability:
5000

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  • 1~5000
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  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/27

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Product Details

Description



Features:

•500kHz operation to MOS FET
•Output current...............................................................±2A
•Output rise time 60ns,fall time 40ns
•Modified totempole output method with small through current
  Compact and light-weight power supply
•Small start-up current............................................90A typ.
•Big difference between "start-up voltage" and "stop voltage" makes the smoothing capacitor of the power input section small.
  Start-up threshold 16V,stop voltage 10V
•Packages with high power dissipation are used to with-stand the heat generated by the gate-drive current of MOS FET.
  16-pin DIP,20-pin SOP 1.5W(at 25°C)
  Simplified peripheral circuit with protection circuit and built-in large-capacity totempole output
•High-speed current limiting circuit using pulse-by-pulse method(Two system of CLM+pin,CLM-pin)
•Protection by intermittent operation of output over current..........Timer protection circuit
•Over-voltage protection circuit with an externally re-settable latch(OVP)
•Protection circuit for output miss action at low supply voltage(UVLO)
  High-performance and highly functional power supply
•Triangular wave oscillator for easy dead time setting


Pinout

Connection Diagram


Specifications

Symbol Parameter Conditions
Ratings
Unit
VCC Supply Voltage  
36
V
VC Collector voltage  
36
V
IO Output current Peak
±2
A
Continuous
±0.15
VVF VF terminal voltage  
VCC
V
VON/OFF ON/OFF terminal voltage  
VCC
V
VCLM- CLM-terminal voltage  
-4.0 to +4.0
V
VCLM+ CLM+terminal voltage  
-0.3 to +4.0
V
IOVP OVP terminal current  
8
mA
VDET DET terminal voltage  
6
V
IDET DET terminal input current  
5
mA
VFB F/B terminal voltage  
0~10
V
ITON T-ON terminal input current  
-1
mA
ITOFF T-OFF terminal input current  
-2
mA
Pd Power dissipation  
1.5
W
K Thermal derating factor Ta= 25
12
mW/
Topr Operating temperature Ta> 25
-30 to +85
Tstg Storage temperature  
40 to +125
Tj Junction temperature  
150

Note 1."+" sign shows the direction of current flow into the IC and "-" sign shows the current flow from the IC.
2.This terminal has the constant voltage characteristic of 6 to 8V,when current is supplied from outside.The maximum allowable voltage is 6V when the constant voltage is applied to this terminal.And maximum allowable current into this terminal is 5mA.
3.The low impedance voltage supply should not be applied to the OVP terminal.

 






Description

M51995A is the primary switching regulator controller which is especially designed to get the regulated DC voltage from AC power supply.

This IC can directly drive the MOS-FET with fast rise and fast fall output pulse.

Type M51995A has the functions of not only high frequency OSC and fast output drive but also current limit with fast response and high sensibility so the true "fast switching regulator" can be realized.

It has another big feature of current protection to short and over current,owing to the integrated timer-type protection circuit,if few parts are added to the primary side.

The M51995A is equivalent to the M51977 with externally resettable OVP(over voltage protection)circuit.




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