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.
Vin (Min) (V) |
Vin (Max) (V) |
Vout (Min) (V) |
Vout (Max) (V) |
Iout (Max) (A) |
Regulated outputs (#) |
Switching Frequency (Min) (kHz) |
Switching Frequency (Max) (kHz) |
Iq (Typ) (mA) |
Features |
Control mode |
Duty cycle (Max) (%) |
Operating temperature range (C) |
Rating |
Package Group |
Type |
Package size: mm2:W x L (PKG) |
LM2676 |
---|
8 |
40 |
1.23 |
37 |
3 |
1 |
260 |
260 |
4.2 |
Enable Over Current Protection |
Voltage Mode |
91 |
-40 to 125 |
Catalog |
DDPAK/TO-263 | 7
TO-220 | 7 VSON | 14 |
Converter |
7DDPAK/TO-263: 154 mm2: 15.24 x 10.1 (DDPAK/TO-263 | 7)
See datasheet (TO-220) 14VSON: 30 mm2: 5 x 6 (VSON | 14) |
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