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M51995AFP, M51995AP, M51995B

Table of contents:
Info of M51995AFP
Info of M51995AP
Info of M51995B

M51995AFP, M51995AP, M51995B Selling Leads, Datasheet

MFG:MITSUBISHI Package Cooled:SOP-20 D/C:15000

M51995AFP, M51995AP, M51995B Datasheet download

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Part Number: M51995AFP

MFG: MITSUBISHI

Package Cooled: SOP-20

D/C: 15000

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M51995AP General 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.

M51995AP Maximum Ratings

Symbol	Parameter	Conditions	Ratings	Unit
V_CC	Supply Voltage		36	V
V_C	Collector voltage		36	V
I_O	Output current	Peak	±2	A
I_O	Output current	Continuous	±0.15	A
V_VF	VF terminal voltage		V_CC	V
V_ON/OFF	ON/OFF terminal voltage		V_CC	V
V_CLM-	CLM-terminal voltage		-4.0 to +4.0	V
V_CLM+	CLM+terminal voltage		-0.3 to +4.0	V
I_OVP	OVP terminal current		8	mA
VD_ET	DET terminal voltage		6	V
I^DET	DET terminal input current		5	mA
V_FB	F/B terminal voltage		0~10	V
I_TON	T-ON terminal input current		-1	mA
I_TOFF	T-OFF terminal input current		-2	mA
P_d	Power dissipation		1.5	W
K	Thermal derating factor	Ta= 25	12	mW/
T_opr	Operating temperature	Ta> 25	-30 to +85
T_stg	Storage temperature		40 to +125
T_j	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.

M51995AP 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

M51995AP Connection Diagram

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