LM2733 0.6/1.6 MHz Boost Converters With 40V Internal FET Switch in SOT-23 | TI.com

LM2733 (ACTIVE)

0.6/1.6 MHz Boost Converters With 40V Internal FET Switch in SOT-23

 

Recommended alternative parts

  • LM2731  -  1.5A / 22V Internal Switch. SOT-23 Package
  • LM2735  -  2.1A/ 24V Internal Switch In SOT23, LLP, And EMSOP Packages
  • LM2735-Q1  -  2.1A/ 24V Internal Switch In SOT23, LLP, And EMSOP Packages

Description

The LM2733 switching regulators are current-mode boost converters operating fixed frequency of 1.6 MHz (‘X’ option) and 600 kHz (‘Y’\x9Doption).

The use of SOT-23 package, made possible by the minimal power loss of the internal 1-A switch, and use of small inductors and capacitors result in the industry's highest power density. The 40-V internal switch makes these solutions perfect for boosting to voltages of 16 V 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.

Features

  • 40-V 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 (2.7 V – 14 V)
  • Low Shutdown Current (< 1 µA)
  • 5-Lead SOT-23 Package
  • Uses Tiny Capacitors and Inductors
  • Cycle-by-Cycle Current Limiting
  • Internally Compensated

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WEBENCH® Designer LM2733

  Min   Max Range
Vin  V 2.7 to 14.0V
Vout  V 3 to 40V
Iout  A ≤ 1A
Ambient Temp  °C -40 to 125°C

Parametrics

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Part number Order Vin (Min) (V) Vin (Max) (V) Vout (Min) (V) Vout (Max) (V) Switch current limit (Typ) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Duty cycle (Max) (%) Operating temperature range (C) Type Rating Package Group
LM2733 Order now 2.7     14     3     40     1.5     1     400     1850     1.1     Enable
Light Load Efficiency    
96     -40 to 125     Converter     Catalog     SOT-23 | 5    
LM2621 Order now 1.2     14     1.24     14     2.85     1     2000     2000     0.08     Enable     80     -40 to 85     Converter     Catalog     VSSOP | 8    
LM2623 Order now 0.8     14     1.24     14     2.85     1     300     2000     0.08     Enable     90     -40 to 85     Converter     Catalog     VSSOP | 8
WSON | 14    
LM2731 Order now 2.7     14     1.23     22     1.5     1     600     1600     2     Enable     93     -40 to 125     Converter     Catalog     SOT-23 | 5    
LM27313 Order now 2.7     14     4     28     1.25     1     1150     1900     2.1     Enable
Light Load Efficiency    
88     -40 to 125     Converter     Catalog     SOT-23 | 5    
LM2735 Order now 2.7     5.5     3     24     2.25     1     520     1600     7