LMR61428 LM61428 低输入电压、升压 DC-DC 转换器 | 德州仪器 TI.com.cn

LMR61428
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LM61428 低输入电压、升压 DC-DC 转换器

LM61428 低输入电压、升压 DC-DC 转换器 - LMR61428
数据表
 

描述

The LMR61428 is a step-up DC-DC switching regulator for battery-powered and low input voltage systems that can achieve efficiencies up to 90%. It has a wide input voltage range from 1.2V to 14V and a possible regulated output voltage range of 1.24V to 14V. It has an internal 0.17Ω N-Channel MOSFET power switch.

The high switching frequency of up to 2MHz of the LMR61428 allows for tiny surface mount inductors and capacitors. Because of the unique constant-duty-cycle gated oscillator topology very high efficiencies are realized over a wide load range. The supply current is reduced to 80µA because of the BiCMOS process technology. In the shutdown mode, the supply current is less than 2.5µA. The LMR61428 is available in a VSSOP-8 package.

特性

  • 1.2V to 14V Input Voltage
  • Adjustable Output Voltage up to 14V
  • Switch Current up to 2.85A
  • Up to 2 MHz Switching Frequency
  • Low Shutdown Iq, <1µA
  • Cycle-by-Cycle Current Limiting
  • VSSOP Packaging (3.0 x 5.0 x 1.09mm)
  • WEBENCH Enabled

Performance Benefits

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

SIMPLE SWITCHER is a trademark of Texas Instruments. WEBENCH is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

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WEBENCH® Designer LMR61428

  最小   最大 范围
输入电压  V 1.2 to 14.0V
输出电压  V 2.5 to 14V
输出电流  A ≤ 2.85A
环境温度  °C -40 to 125°C

参数

与其它产品相比 升压转换器(集成开关) 邮件 下载到电子表格中
Part number 立即下单 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
LMR61428 立即下单 1.2     14     1.24     14     2.85     1     300     2000     0.1     Enable     70     -40 to 85     Converter     Catalog     VSSOP | 8    
LMR62014 立即下单 2.7     14     3     20     2     1     1600     1600     2       93     -40 to 125     Converter     Catalog     SOT-23 | 5    
LMR62421 立即下单 2.7     5.5     3     24     3     1     1600     1600     7     Enable     96     -40 to 125     Converter     Catalog     SOT-23 | 5
WSON | 6    
LMR64010 立即下单 2.7     14     3     40     1     1     1600     1600     2.1       93     -40 to 125     Converter     Catalog     SOT-23 | 5    
TPS61170 立即下单 3     18     3     38     1.2     1     1000     1200     2.3     Enable
Light Load Efficiency    
93     -40 to 85     Converter     Catalog     WSON | 6