LM2735 520kHz/1.6MHz space efficient boost and SEPIC DC-DC regulator | TI.com

LM2735 (ACTIVE) 520kHz/1.6MHz space efficient boost and SEPIC DC-DC regulator

 

Recommended alternative parts

  • LM2735-Q1  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 

Description

The LM2735 device is an easy-to-use, space-efficient 2.1-A low-side switch regulator, ideal for Boost and SEPIC DC/DC regulation. The device provides all the active functions to provide local DC-DC conversion with fast-transient response and accurate regulation in the smallest PCB area. Switching frequency is internally set to either 520 kHz or 1.6 MHz, allowing the use of extremely small surface mount inductor and chip capacitors, while providing efficiencies of up to 90%. Current-mode control and internal compensation provide ease-of-use, minimal component count, and high-performance regulation over a wide range of operating conditions. External shutdown features an ultra-low standby current of 80 nA, ideal for portable applications. Tiny SOT-23, WSON, and MSOP-PowerPAD packages provide space savings. Additional features include internal soft start, circuitry to reduce inrush current, pulse-by-pulse current limit, and thermal shutdown.

Features

  • Input Voltage Range: 2.7 V to 5.5 V
  • Output Voltage Range: 3 V to 24 V
  • 2.1-A Switch Current Over Full Temperature Range
  • Current-Mode Control
  • Logic High Enable Pin
  • Ultra-Low Standby Current of 80 nA in Shutdown
  • 170-mΩ NMOS Switch
  • ±2% Feedback Voltage Accuracy
  • Ease-of-Use, Small Total Solution Size
    • Internal Soft Start
    • Internal Compensation
    • Two Switching Frequencies
    • 520 kHz (LM2735-Y)
    • 1.6 MHz (LM2735-X)
    • Uses Small Surface Mount Inductors and Chip Capacitors
    • Tiny SOT-23, WSON, and MSOP-PowerPAD™ Packages
  • Create a Custom Design Using the LM2735 With WEBENCH® Power Designer

All trademarks are the property of their respective owners.

New!
WEBENCH® Power Designer is now even easier to use. Try it now.

WEBENCH® Designer

Part Number
  Min   Max Range
Vin  V
Vout  V
Iout  A
Ambient Temp  °C -40 to 150°C

Parametrics

Compare all products in Boost converters (integrated switch) Email Download to Excel
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
LM2735 Order now 2.7     5.5     3     24     2.25     1     520     1600     7     Enable     99     -40 to 125     Converter     Catalog     MSOP-PowerPAD | 8
SOT-23 | 5
WSON | 6    
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    
LM2733 Order now 2.7     14     3     40     1.5     1     400     1850