LMR62421 SIMPLE SWITCHER 2.7V to 5.5V, 24Vout, 2.1A Boost Converter in SOT-23 | TI.com

LMR62421 (ACTIVE)

SIMPLE SWITCHER 2.7V to 5.5V, 24Vout, 2.1A Boost Converter in SOT-23

 

Description

The LMR62421 is an easy-to-use, space-efficient 2.1A low-side switch regulator ideal for Boost and SEPIC DC-DC regulation. It 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 1.6 MHz, allowing the use of extremely small surface mount inductor and chip capacitors while providing efficiencies near 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 5-pin SOT-23 and 6-pin WSON 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 of 2.7V to 5.5V
  • Output Voltage up to 24V
  • Switch Current up to 2.1A
  • 1.6 MHz Switching Frequency
  • Low Shutdown Iq, 80 nA
  • Cycle-by-Cycle Current Limiting
  • Internally Compensated
  • Internal Soft-Start
  • 5-Pin SOT-23 (2.92 x 2.84 x 1mm) and 6-Pin WSON (3 x 3 x 0.8 mm) Packaging
  • Fully Enabled for WEBENCH® Power Designer

Performance Benefits

  • Extremely Easy to Use
  • Tiny Overall Solution Reduces System Cost

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Parametrics Compare all products in Boost converters (integrated switch)

 
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
LMR62421 LMR61428 LMR62014 LMR64010 TPS61170
2.7     1.2     2.7     2.7     3    
5.5     14     14     14     18    
3     1.24     3     3     3    
24     14     20     40     38    
3     2.85     2     1.5     1.2    
1     1     1     1     1    
1600     300     1600     1600     1000    
1600     2000     1600     1600     1200    
7     0.1     2     2.1     2.3    
Enable     Enable     Enable     Enable     Enable
Light Load Efficiency    
96     70     93     93     93    
-40 to 125     -40 to 85     -40 to 125     -40 to 125     -40 to 85    
Converter     Converter     Converter     Converter     Converter    
Catalog     Catalog     Catalog     Catalog     Catalog    
SOT-23 | 5
WSON | 6    
VSSOP | 8     SOT-23 | 5     SOT-23 | 5     WSON | 6    

Design tool

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

WEBENCH® Designer LMR62421

  Min   Max Range
Vin  V 2.7 to 5.5V
Vout  V 3 to 24V
Iout  A ≤ 2.1A
Ambient Temp  °C -40 to 125°C


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