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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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

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