Product Summary

The LM2703MFX-ADJ is a micropower step-up DC/DC in a small 5-lead SOT-23 package. A current limited, fixed off-time control scheme conserves operating current resulting in high efficiency over a wide range of load conditions. The 22V switch allows for output voltages as high as 21V. The low 400ns off-time permits the use of tiny, low profile inductors and capacitors to minimize footprint and cost in space conscious portable applications. The LM2703MFX-ADJ is ideal for LCD panels requiring low current and high efficiency as well as white LED applications for cellular phone back-lighting. The LM2703MFX-ADJ can drive up to 4 white LEDs from a single Li-Ion battery. The applications of the LM2703MF-ADJ include LCD Bias Supplies; White LED Back-Lighting; Handheld Devices; Digital Cameras; Portable Applications.

Parametrics

LM2703MFX-ADJ absolute maximum ratings: (1)VIN: 7.5V; (2)SW Voltage: 22.5V; (3)FB Voltage: 2V; (4)SHDN Voltage: 7.5V; (5)Maximum Junction Temp TJ: 150℃; (6)Lead Temperature (Soldering 10 sec.): 300℃; (7) Vapor Phase (60 sec.): 215℃; (8) Infrared (15 sec.): 220℃; (9) ESD Ratings: Human Body Model 2KV; (10) Machine Model: 200V.

Features

LM2703MFX-ADJ features: (1)350mA, 0.7Ω, internal switch; (2)Uses small surface mount components; (3)Adjustable output voltage up to 21V; (4)2.2V to 7V input range; (5)Input under voltage lockout; (6)0.01μA shutdown current; (7)Small 5-Lead SOT-23 package.

Diagrams

LM2703MFX-ADJ block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
LM2703MFX-ADJ
LM2703MFX-ADJ
National Semiconductor (TI)
DC/DC Switching Controllers
Data Sheet
0-3000: $0.52
3000-6000: $0.50
6000-12000: $0.48
LM2703MFX-ADJ/NOPB
LM2703MFX-ADJ/NOPB
National Semiconductor (TI)
DC/DC Switching Controllers
Data Sheet
0-2070: $0.56
2070-2500: $0.52
2500-3000: $0.52
3000-5000: $0.50