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LM2676S-12 3A Step Down Voltage Regulator National Semi

LM2676S-12 3A Step Down Voltage Regulator National Semi

Manufacturer: National Semiconductor
Part Number: LM2676S-12
Amps: 3
Package: TO-263
Lead/Terminal Type: Surface Mount
Number Leads/Terminals: 7

Price: $4.25
1689 available for immediate delivery
Code: T179BHM09
Weight: 0.05oz ONZ
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Additional Information

DESCRIPTION / ADDITIONAL INFORMATION

Step Down Voltage Regulators
Simple Switcher�

Features:
- High Efficiency
- 150 mΩ DMOS output switch
- 50μA standby current when switched OFF
- �2%maximum output tolerance over full line and load conditions
- Wide input voltage range: 8V to 40V
- 260 KHz fixed frequency internal oscillator
- −40 to +125�C operating junction temperature range

Electrical Characteristics (TA=TJ=25�C unless otherwise noted):
Output Voltage: 12V typ.
(VIN = 15V to 40V, 100mA ≤ IOUT ≤ 3A)
Efficiency (VIN = 24V, ILOAD = 3A): 94% typ.
Quiescent Current (VFEEDBACK = 8V): 4.2mA typ.
Current Limit: 4.5A typ.
Switch On-Resistance (ISWITCH = 3A): 0.15Ω typ.
Oscillator Frequency (Measured at Switch Pin): 260kHz typ.
Duty Cycle: 91% max. ; 0% min.
ON/OFF Threshold Voltage: 1.4V
ON/OFF Input Current (ON/OFF Input = 0V): 20uA

Applications:
- Simple to design, high efficiency (>90%) step-down switching regulators
- Efficient system pre-regulator for linear voltage regulators
- Battery chargers

Manufactured by: National Semiconductor
Part Number: LM2676S-12

Full Datasheet: LM2676S-12