LMR12010 3V to 20V, 1A Step-Down DC/DC Switching Regulator in SOT-23 | TI.com

LMR12010 (ACTIVE) 3V to 20V, 1A Step-Down DC/DC Switching Regulator in SOT-23

 

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Description

The LMR12010 regulator is a monolithic, high frequency, PWM step-down DC/DC converter in a 6-pin thin SOT23 package. It provides all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area.

With a minimum of external components and online design support through WEBENCH, the LMR12010 is easy to use. The ability to drive 1-A loads with an internal 300-mΩ NMOS switch using state-of-the-art 0.5-µm BiCMOS technology results in the best power density available. The world class control circuitry allows for on-times as low as 13 ns, thus supporting exceptionally high frequency conversion over the entire 3-V to 20-V input operating range down to the minimum output voltage of 0.8 V. Switching frequency is internally set to 1.6 MHz (LMR12010X) or 3 MHz (LMR12010Y), allowing the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequencies are very high, efficiencies up to 90% are easy to achieve. External shutdown is included, featuring an ultra-low standby current of 30 nA. The LMR12010 utilizes current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output overvoltage protection.

Features

  • Input Voltage Range of 3 V to 20 V
  • Output Voltage Range of 0.8 V to 17 V
  • Output Current up to 1 A
  • 1.6 MHz (LMR12010X) and 3 MHz (LMR12010Y) Switching Frequencies
  • Low Shutdown IQ, 30 nA Typical
  • Internal Soft Start
  • Internally Compensated
  • Current-Mode PWM Operation
  • Thermal Shutdown
  • Tiny Overall Solution Reduces System Cost
  • Thin 6-Pin SOT-23 Package (2.97 × 1.65 × 1 mm)
  • Create a custom design using the LMR12010 with the WEBENCH® Power Designer

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WEBENCH® Designer LMR12010

  Min   Max Range
Vin  V 3.0 to 20.0V
Vout  V 0.8 to 18V
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) Iout (Max) (A) Regulated outputs (#) Switching frequency (Min) (kHz) Switching frequency (Max) (kHz) Iq (Typ) (mA) Features Control mode Duty cycle (Max) (%) Operating temperature range (C) Rating Package Group Type Package size: mm2:W x L (PKG)
LMR12010 Order now 3     20     0.8     17     1     1     1600     3000     1.5     Enable     Current Mode     92     -40 to 125     Catalog     SOT-23-THIN | 6     Converter     6SOT-23-THIN: 5 mm2: 1.6 x 2.9 (SOT-23-THIN | 6)    
LMR12015 Order now 3     20     1     18     1.5     1     1000     2300     2.4     Enable
Frequency Synchronization    
Current Mode     90     -40 to 125     Catalog     WSON | 10     Converter     10WSON: 9 mm2: 3 x 3 (WSON | 10)    
LMR12020 Order now 3     20     1     18     2     1     1000     2300     2.4     Enable
Frequency Synchronization    
Current Mode     90     -40 to 125     Catalog     WSON | 10     Converter     10WSON: 9 mm2: 3 x 3 (WSON | 10)