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線性與低壓差 (LDO) 穩壓器

LP5922

不推薦在新設計中採用

2-A 可調式 LDO

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產品規格表

LP5922

不推薦在新設計中採用
產品規格表 立即訂購

產品詳細資料

Output options Adjustable Output Iout (max) (A) 2 Vin (max) (V) 6 Vin (min) (V) 1.3 Vout (max) (V) 5 Vout (min) (V) 0.5 Noise (µVrms) 22 Iq (typ) (mA) 0.5 Thermal resistance θJA (°C/W) 50 Rating Catalog Load capacitance (min) (µF) 22 Regulated outputs (#) 1 Features Enable, Output discharge, Power good, Soft start Accuracy (%) 3 PSRR at 100 KHz (dB) 50 Dropout voltage (Vdo) (typ) (mV) 200 Operating temperature range (°C) -40 to 125
Output options Adjustable Output Iout (max) (A) 2 Vin (max) (V) 6 Vin (min) (V) 1.3 Vout (max) (V) 5 Vout (min) (V) 0.5 Noise (µVrms) 22 Iq (typ) (mA) 0.5 Thermal resistance θJA (°C/W) 50 Rating Catalog Load capacitance (min) (µF) 22 Regulated outputs (#) 1 Features Enable, Output discharge, Power good, Soft start Accuracy (%) 3 PSRR at 100 KHz (dB) 50 Dropout voltage (Vdo) (typ) (mV) 200 Operating temperature range (°C) -40 to 125
WSON (DSC) 10 9 mm² 3 x 3
  • Wide Input Voltage Range: 1.3 V to 6 V
  • Low VIN Voltage Without Extra Bias Voltage
  • Adjustable Output Voltage: 0.5 V to 5 V
  • Low Dropout: 200 mV at 2-A Load
  • Low Output Voltage Noise: 25 μVRMS
  • Output Current: 2 A
  • –40˚C to +125°C Operating Junction Temperature
  • Programmable Soft Start Limits Inrush Current
  • 3-mm × 3-mm × 0.75-mm 10-Pin WSON Package
  • Thermal-Overload and Short-Circuit Protection
  • Output Voltage Tolerance: ±1.5%
  • Shutdown Supply Current : 0.1 μA
  • PSRR: 70 dB at 1 kHz
  • Power Good Output
  • Create a Custom Design Using the LP5922 With the WEBENCH Power Designer
  • Wide Input Voltage Range: 1.3 V to 6 V
  • Low VIN Voltage Without Extra Bias Voltage
  • Adjustable Output Voltage: 0.5 V to 5 V
  • Low Dropout: 200 mV at 2-A Load
  • Low Output Voltage Noise: 25 μVRMS
  • Output Current: 2 A
  • –40˚C to +125°C Operating Junction Temperature
  • Programmable Soft Start Limits Inrush Current
  • 3-mm × 3-mm × 0.75-mm 10-Pin WSON Package
  • Thermal-Overload and Short-Circuit Protection
  • Output Voltage Tolerance: ±1.5%
  • Shutdown Supply Current : 0.1 μA
  • PSRR: 70 dB at 1 kHz
  • Power Good Output
  • Create a Custom Design Using the LP5922 With the WEBENCH Power Designer

The LP5922 is 2-A low dropout (LDO) linear regulator with 200-mV typical dropout voltage at maximum current levels. The LP5922 device can operate from a voltage rail down to 1.3 V without additional bias supply. System efficiency is maximized and power dissipation minimized by the low dropout and low VIN capability. The device also features low quiescent current and very low shutdown current.

The LP5922 device was designed to have high PSRR and low output noise to support sensitive analog applications without additional filtering. The output noise can be reduced even further by implementing a small capacitor on the SS/NR pin.

The output voltage is adjustable from 0.5 V to 5 V by an external resistor divider. Enable pin, adjustable soft start and optional Power Good features help with system power sequencing. Inrush current is controlled with the soft start and the device has short circuit and thermal protections.

For all available packages, see the orderable addendum at the end of the data sheet.

The LP5922 is 2-A low dropout (LDO) linear regulator with 200-mV typical dropout voltage at maximum current levels. The LP5922 device can operate from a voltage rail down to 1.3 V without additional bias supply. System efficiency is maximized and power dissipation minimized by the low dropout and low VIN capability. The device also features low quiescent current and very low shutdown current.

The LP5922 device was designed to have high PSRR and low output noise to support sensitive analog applications without additional filtering. The output noise can be reduced even further by implementing a small capacitor on the SS/NR pin.

The output voltage is adjustable from 0.5 V to 5 V by an external resistor divider. Enable pin, adjustable soft start and optional Power Good features help with system power sequencing. Inrush current is controlled with the soft start and the device has short circuit and thermal protections.

For all available packages, see the orderable addendum at the end of the data sheet.

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* Data sheet LP5922 2-A Low-Noise, Adjustable LDO With Low Input- and Output-Voltage Capability datasheet (Rev. A) PDF | HTML 2017年 2月 14日
EVM User's guide LP592201EVM User's Guide 2016年 11月 16日

設計與開發

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模擬型號

LP592201 PSpice Transient Model (Rev. A)

SNVMB18A.ZIP (88 KB) - PSpice Model
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模擬型號

LP592201 Unencrypted PSpice Transient Model

SNVMB31.ZIP (3 KB) - PSpice Model
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參考設計

TIDA-01322 — 適用於工業應用的低壓差 (LDO)、高電流和無偏壓軌參考設計

This reference design demonstrates a low-noise, low-dropout (LDO), high-current power stage with no voltage-bias-rail requirement utilizing the LP5922 LDO linear regulator. The power stage demonstrated is ideal for industrial applications. Within industrial applications, low-noise power is (...)
Design guide: PDF
電路圖: PDF
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