LM2676SX-ADJ LM2676SX-ADJ/NOPB LM2676T-ADJ/NOPB Power Regulator IC Switching Voltage Regulators NRND
Brand Name:Ti
Model Number:LM2676SX-ADJ
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Product Details
LM2676SX-ADJ LM2676SX-ADJ/NOPB LM2676T-ADJ/NOPB Power Regulator IC Switching Voltage Regulators NRND
1 Features
- Efficiency Up to 94%
Simple and Easy to Design With (Using Off-the-
Shelf External Components)
150-mΩ DMOS Output Switch
3.3-V, 5-V, 12-V Fixed Output and Adjustable (1.2 V to 37 V) Versions
50-μA Standby Current When Switched OFF
±2% Maximum Output Tolerance Over Full Line and Load Conditions
Wide Input Voltage Range: 8 V to 40 V
260-KHz Fixed Frequency Internal Oscillator
–40 to 125°C Operating Junction Temperature Range
2 Applications
Simple-to-Design, High Efficiency (>90%) Step- Down Switching Regulators
Efficient System Preregulator for Linear Voltage Regulators
Battery Chargers
3 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 3-A loads with excellent line and load regulation characteristics. High efficiency (>90%) is obtained through the use of a low ON- resistance DMOS power switch. The series consists of fixed output voltages of 3.3-V, 5-V, and 12-V and an adjustable output version.
The SIMPLE SWITCHER® concept provides for a complete design using a minimum number of external components. A high fixed frequency oscillator (260 kHz) allows the use of physically smaller sized components. A family of standard inductors for use with the LM2676 are available from several manufacturers to greatly simplify the design process.
The LM2676 series also has built-in thermal shutdown, current limiting and an ON/OFF control input that can power down the regulator to a low 50‐μA quiescent current standby condition. The output voltage is ensured to a ±2% tolerance. The clock frequency is controlled to within a ±11% tolerance.
Device Information
PART NUMBER | PACKAGE | BODY SIZE (NOM) |
LM2676 | TO-263 (7) | 10.10 mm × 8.89 mm |
TO-220 (7) | 14.986 mm × 10.16 mm | |
VSON (14) | 6.00 mm × 5.00 mm |
LM2676SX-ADJ LM2676SX-ADJ/NOPB LM2676T-ADJ/NOPB Power Regulator IC Switching Voltage Regulators NRND
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