Product Summary

The LM3671MF-1.2 is a step-down DC-DC converter. It is optimized for powering ultra-low voltage circuits from a single Li-Ion cell or 3 cell NiMH/NiCd batteries. It provides up to 600mA load current, over an input voltage range from 2.8V to 5.5V. There are several different fixed voltage output options available as well as an adjustable output voltage version. The applications of the LM3671MF-1.2 are (1)Mobile phones; (2)PDAs; (3)MP3 players; (4)W-LAN; (5)Portable instruments; (6)Digital still cameras; (7)Portable Hard disk drives.

Parametrics

LM3671MF-1.2 absolute maximum ratings: (1)VIN Pin: Voltage to GND: -0.2V to 6.0V; (2)FB, SW, EN Pin: (GND-0.2V) to (VIN + 0.2V); (3)Continuous Power DissipationInternally Limited; (4)Junction Temperature (TJ-MAX): +125℃; (5)Storage Temperature Range: -65 to +150℃; (6)Maximum Lead Temperature (Soldering, 10 sec.): 260℃; (7)ESD Rating: 2.0 kV.

Features

LM3671MF-1.2 features: (1)16 μA typical quiescent current; (2)600 mA maximum load capability; (3)2 MHz PWM fixed switching frequency (typ); (4)Automatic PFM/PWM mode switching; (5)Available in fixed output voltages and adjustable version; (6)SOT23-5 package; (7)Internal synchronous rectification for high efficiency; (8)Internal soft start; (9)0.01 μA typical shutdown current; (10)Operates from a single Li-Ion cell or 3 cell NiMH/NiCd batteries; (11)Only three tiny surface-mount external components required (one inductor, two ceramic capacitors); (12)nCurrent overload and Thermal shutdown protection.

Diagrams

LM3671MF-1.2 block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LM3671MF-1.2
LM3671MF-1.2

National Semiconductor (TI)

DC/DC Switching Controllers

Data Sheet

0-1000: $0.20
1000-2000: $0.20
LM3671MF-1.2/NOPB
LM3671MF-1.2/NOPB

National Semiconductor (TI)

DC/DC Switching Controllers 2MHZ,600MA STEP-DOWN DC-DC CONVERTER

Data Sheet

0-1: $0.40
1-10: $0.36
10-25: $0.32
25-100: $0.22
LM3671MF-1.25/NOPB
LM3671MF-1.25/NOPB

National Semiconductor (TI)

DC/DC Switching Controllers

Data Sheet

0-1: $0.40
1-10: $0.36
10-25: $0.32
25-100: $0.22
LM3671MF-1.25
LM3671MF-1.25

National Semiconductor (TI)

DC/DC Switching Controllers

Data Sheet

0-1000: $0.20
1000-2000: $0.20