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Efficiency up to 94% |
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Simple and easy to design with (using off-the-shelf external components) |
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150 mΩ DMOS output switch |
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3.3V, 5V and 12V fixed output and adjustable (1.2V to 37V ) versions |
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50μA standby current when switched OFF |
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±2%maximum output tolerance over full line and load conditions |
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Wide input voltage range: 8V to 40V |
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260 KHz fixed frequency internal oscillator |
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−40 to +125°C operating junction temperature range |
General Description
The LM2676 series of regulators are monolithic integrated circuits which provide all of the active functions for a step-down (buck) switching regulator capable of driving up to 3A loads with excellent line and load regulation characteristics. More...
Applications
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Simple to design, high efficiency (>90%) step-down switching regulators |
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Efficient system pre-regulator for linear voltage regulators |
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Battery chargers |
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Typical Application
click for larger image
Parameters | Values |
Output Current |
3000 mA |
Input Min Voltage |
15, 8 Volt |
Input Max Voltage |
40 Volt |
Output Min |
3.3, 1.23, 12, 5 Volt |
Output Max |
3.3, 12, 37, 5 Volt |
Frequency Min |
260 kHz |
Frequency Max |
260 kHz |
Efficiency (peak) |
94, 88, 86 % |
On/Off Pin |
Yes |
Error Flag |
No |
SoftStart |
No |
Sync Pin |
No |
Flyback |
No |
RegType |
Switching Regulator |
Temperature Min |
-40 deg C |
Temperature Max |
125 deg C |
Adjustable Output |
Yes, No |
Adj Switch Frequency |
No |
PWM Mode |
Voltage with Vin Feedforward |
Topology |
Buck |
Special Features |
Internal Type 3 compensation, 2% output voltage accuracy, SIMPLE SWITCHER regulator |
Step-Down |
Yes |
Multiple Output Capability |
No |
Output Power |
Undefined Watt |
Output Voltage |
3.3, 12, Undefined, 5 Volt |
Output Range |
12V, 1.23V to 37V, 3.3V, 5V |
Switching Frequency |
260 kHz |
Regulator Family |
SIMPLE SWITCHER |
Synchronous Rectification |
No |
Typical Performance
*click for larger image |