LP2992 微功耗 250mA 低噪声超低压降稳压器 | 德州仪器 TI.com.cn

LP2992
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微功耗 250mA 低噪声超低压降稳压器

 

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描述

The LP2992 is a 250-mA, fixed-output voltage regulator designed to provide ultra-low dropout and low noise in battery-powered applications.

Using an optimized vertically integrated PNP (VIP) process, the LP2992 delivers unequaled performance in all specifications critical to battery-powered designs:

  • Dropout voltage: Typically 450 mV at 250-mA load, and 5 mV at 1-mA load.
  • Ground pin current: Typically 1500 µA at 250-mA load, and 75 µA at 1-mA load.
  • Enhanced stability: The LP2992 is stable with output capacitor equivalent series resistance (ESR) as low as 5 mΩ, which allows the use of ceramic capacitors on the output.
  • Sleep mode: Less than 1-µA quiescent current when ON/OFF pin is pulled low.
  • Smallest possible size: SOT-23 and WSON packages use absolute minimum board space.
  • Precision output: 1% tolerance output voltages available (A grade).
  • Low noise: By adding a 10-nF bypass capacitor, output noise can be reduced to 30 µV (typical).
  • Multiple voltage options, from 1.5 V to 5 V, are available as standard products. Consult factory for custom voltages.
For all available packages, see the orderable addendum at the end of the data sheet.

特性

  • Input Voltage Range: 2.2 V to 16 V
  • Output Voltage Range: 1.5 V to 5 V
  • Wide Supply Voltage Range (16-V Maximum)
  • Output Voltage Accuracy 1% (A Grade)
  • Ultra-Low-Dropout Voltage
  • Specified 250-mA Output Current
  • Stable With Low-ESR Output Capacitor
  • < 1-µA Quiescent Current When Shut Down
  • Low Ground Pin Current at All Loads
  • High Peak Current Capability
  • Low ZOUT: 0.3-Ω Typical (10 Hz to 1 MHz)
  • Overtemperature and Overcurrent Protection
  • −40°C to +125°C Junction Temperature Range
  • Smallest Possible Size (SOT-23, WSON Package)
  • Requires Minimum External Components
  • Custom Voltages Available

WEBENCH® Designer LP2992

  Min   Max Range
Vin  V 2.2 to 16.0V
Product Option
Vout  V
Iout  A ≤ 0.25A
Ambient Temp  °C -40.0 to 125.0°C

参数

与其它产品相比 线性稳压器(LDO) 邮件 下载到电子表格中
Part number 立即下单 Output options Iout (Max) (A) Vin (Max) (V) Vin (Min) (V) Vout (Max) (V) Vout (Min) (V) Fixed output options (V) Package Group Features Regulated outputs (#) Operating temperature range (C) Thermal resistance θJA (°C/W) Noise (uVrms) Approx. price (US$) Rating PSRR @ 100 KHz (dB) Accuracy (%) Dropout voltage (Vdo) (Typ) (mV) Iq (Typ) (mA) Package size: mm2:W x L (PKG)
LP2992 立即下单 Fixed Output     0.25     16     2.2     5     1.5     1.5
1.8
2.5
3.3
5    
SOT-23 | 5
WSON | 6    
Enable
Soft Start    
1     -40 to 125     72     30     0.33 | 1ku     Catalog     40     2     450     0.065     5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)
6WSON: 10 mm2: 3.29 x 2.92 (WSON | 6)    
LP2982 立即下单 Fixed Output     0.05     16     3.12     5     3     3
3.3
5    
SOT-23 | 5     Enable     1     -40 to 125     176     30     0.26 | 1ku     Catalog     38     2.3     120     0.065     5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)    
LP2983 立即下单 Fixed Output     0.15     16     2.2     1.2     1     1
1.2    
SOT-23 | 5     Enable     1     -40 to 125     169     60     0.45 | 1ku     Catalog     38     1.5     1000     0.065     5SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 5)