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LM2731_15 Datasheet, PDF (1/29 Pages) Texas Instruments – 0.6/1.6-MHz Boost Converters With 22-V Internal FET Switch in SOT-23 | |||
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LM2731
SNVS217G â MAY 2004 â REVISED SEPTEMBER 2015
LM2731 0.6/1.6-MHz Boost Converters With 22-V Internal FET Switch in SOT-23
1 Features
â¢1 22-V DMOS FET Switch
⢠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(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM2731
SOT-23 (5)
1.60 mm à 2.90 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Block Diagram
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
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