ChongMing Group (HK) Int'l Co., Ltd
CHONGMING GROUP (HK) INT'L CO., LTD.
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LM2731YMF Power Regulator IC Switching Voltage Regulators 0.6/1.6 MHz Boost Converters With 22V In
1 Features
1.6-MHz (X Option), 0.6-MHz (Y Option) Switching
Frequency
Low RDS(ON) DMOS FET
Switch Current Up to 1.8 A
Wide Input Voltage Range (2.7 V to 14 V)
Low Shutdown Current (<1 μA)
5-Lead SOT-23 Package
Uses Tiny Capacitors and Inductors
Cycle-by-Cycle Current Limiting
Internally Compensated
2 Applications
White LED Current Sources
PDAs and Palm-Top Computers
Digital Cameras
Portable Phones and Games
Local Boost Regulators
3 Description
The LM2731 switching regulators are current-mode boost converters operating at fixed frequencies of 1.6 MHz (X option) and 600 kHz (Y option).
The use of SOT-23 package, made possible by the minimal power loss of the internal 1.8-A switch, and use of small inductors and capacitors result in the highest power density of the industry. The 22-V internal switch makes these solutions perfect for boosting to voltages up to 20 V.
These parts have a logic-level shutdown pin that can reduce quiescent current and extend battery life.
Protection is provided through cycle-by-cycle current limiting and thermal shutdown. Internal compensation simplifies design and reduces component count.
Device Information
|
PART NUMBER |
PACKAGE |
BODY SIZE (NOM) |
|
LM2731 |
SOT-23 (5) |
1.60 mm × 2.90 mm |