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LM2733

Features: `40V DMOS FET switch`1.6 MHz ( X ), 0.6 MHz ( Y ) switching frequency`Low RDS(ON) DMOS FET`Switch current up to 1A`Wide input voltage range (2.7V14V)`Low shutdown current (<1 A)`5-Lead SOT-23 package`Uses tiny capacitors and inductors`Cycle-by-cycle current limiting`Internally compens...

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SeekIC No. : 004395028 Detail

LM2733: Features: `40V DMOS FET switch`1.6 MHz ( X ), 0.6 MHz ( Y ) switching frequency`Low RDS(ON) DMOS FET`Switch current up to 1A`Wide input voltage range (2.7V14V)`Low shutdown current (<1 A)`5-Lead ...

LM2733 Data Sheet

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Part Number:
LM2733
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

`40V DMOS FET switch
`1.6 MHz ("X"), 0.6 MHz ("Y") switching frequency
`Low RDS(ON) DMOS FET
`Switch current up to 1A
`Wide input voltage range (2.7V14V)
`Low shutdown current (<1 A)
`5-Lead SOT-23 package
`Uses tiny capacitors and inductors
`Cycle-by-cycle current limiting
`Internally compensated


Application

`White LED Current Source
`PDA's and Palm-Top Computers
`Digital Cameras
`Portable Phones and Games
`Local Boost Regulator


Pinout

Connection Diagram


Specifications

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Storage Temperature Range.............. −65 to +150
Operating Junction
Temperature Range ............................−40 to +125
Lead Temp. (Soldering, 5 sec.) ............................300
Power Dissipation (Note 2) ...............Internally Limited
FB Pin Voltage......................................... −0.4V to +6V
SW Pin Voltage ......................................−0.4V to +40V
Input Supply Voltage ..........................−0.4V to +14.5V
Shutdown Input Voltage
(Survival)............................................ −0.4V to +14.5V
J-A (SOT23-5) ...............................................265/W
ESD Rating (Note 3)
Human Body Model................................................2 kV
Machine Model......................................................200V



Description

The LM2733 switching regulators are current-mode boost converters operating fixed frequency 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 1A switch, and use of small inductors and capacitors result in the industry's highest power density. The 40V internal switch makes these solutions perfect for boosting to voltages of 16V or greater.

These parts have a logic-level shutdown pin that can be used to 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.




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