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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 re-settable OVP (over voltage protection) circuit.
Features
● 500 kHz 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 : 90μA 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℃)
● 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
Application
Feed forward regulator, fly-back regulator
Recommended Operating Conditions
● Supply voltage range: 12 to 36V
● Operating frequency: less than 500kHz
● Oscillator frequency setting resistance
— T-ON pin resistance RON: 10k to 75k?
— T-OFF pin resistance ROFF: 2k to 30k?
Block Diagram
Preview of the first 3 pages of the data sheet
Some Part number from the same manufacture
Same catergory
10000 buyer reviews from United States
carol
Length of registration:9 years
The service attitude is very good, the quality is good and very satisfied, the price is affordable, the workmanship is fine, it is worth buying.
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09/16/2022
IHRS
Length of registration:2 years
Excellent component. Very good price. Shipment and delivery very fast.
0
0
Reply0
08/31/2022
Daniel Anderson
Length of registration:7 years
The M51995AFP#CFOJ integrated circuit is an excellent choice for a wide range of applications. It is reliable, efficient, and easy to use. The circuit is well designed and provides great performance. It has a wide range of features and functions that make it suitable for a variety of applications. The circuit is also very cost effective and provides great value for money. Overall, I highly recomme
0
0
Reply0
03/17/2023
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All UTSOURCE purchases have a 60 days money back return policy, plus a 90 days UTSOURCE warranty against any manufacturing defects.This warranty shall not apply to any item where defects have been caused by improper customer assembly, failure by customer to follow instructions, product modification, negligent or improper operation.
M51995AFP
M51995AFP has several brands around the world that may have alternate names for M51995AFP due to regional differences or acquisition. M51995AFP may also be known as the following names:
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Unit Price:2.79400
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