LM2577T-ADJ/NOPB Conv DC-DC 3.5V to 40V Step Up Single-Out 11.6V to 12.4V 3A 5-Pin(5+Tab) TO-220 Tube
Descriptions :
The LM1577/LM2577 are monolithic integrated circuits that provide all of the power and control functions for step-up (boost), flyback, and forward converter switching regulators. The device is available in three different output voltage versions: 12V, 15V, and adjustable.
Requiring a minimum number of external components, these regulators are cost effective, and simple to use. Listed in this data sheet are a family of standard inductors and flyback transformers designed to work with these switching regulators.
Included on the chip is a 3.0A NPN switch and its associated protection circuitry, consisting of current and thermal limiting, and undervoltage lockout. Other features include a 52 kHz fixed-frequency oscillator that requires no external components, a soft start mode to reduce in-rush current during start-up, and current mode control for improved rejection of input voltage and output load transients.
Features :
- Requires Few External Components.
- NPN Output Switches 3.0A, can Stand off 65V.
- Wide Input Voltage Range: 3.5V to 40V.
- Current-mode Operation for Improved Transient Response, Line Regulation, and Current Limit.
- 52 kHz Internal Oscillator.
- Soft-start Function Reduces In-rush Current During Start-up.
- Output Switch Protected by Current Limit, Under-voltage Lockout, and Thermal Shutdown.
Technical Specifications :
| Tab |
Tab |
| Package Height |
9.25(Max) |
| Package Width |
4.83(Max) |
| Package Length |
10.67(Max) |
| PCB changed |
5 |
| Lead Shape |
Through Hole |
| Mounting |
Through Hole |
| Type |
Step Up |
| Output Type |
Adjustable |
| Switching Frequency (kHz) |
48 to 56 |
| Switching Regulator |
Yes |
| Number of Outputs |
1 |
| Output Voltage (V) |
11.6 to 12.4 |
| Maximum Output Current (A) |
3 |
| Minimum Input Voltage (V) |
3.5 |
| Maximum Input Voltage (V) |
40 |
| Operating Supply Voltage (V) |
3.5 to 40 |
| Typical Switch Current (A) |
5.3(Max) |
| Typical Quiescent Current (uA) |
10000 |
| Line Regulation |
50mV |
| Load Regulation |
50mV |
| Efficiency (%) |
80(Typ) |
| Minimum Operating Temperature (°C) |
-40 |
| Maximum Operating Temperature (°C) |
125 |
| Packaging |
Tube |
| Supplier Package |
TO-220 |
| Standard Package Name |
TO-220 |
| Pin Count |
5 |
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LM2577T-ADJ/NOPB Conv 3A TO220-5 Integrated Circuits Ics Images
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