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Linear & low-dropout (LDO) regulators

LP3990

ACTIVE

150-mA, low-IQ, low-dropout voltage regulator with enable & low-VOUT

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Data sheet

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TLV771 ACTIVE 150mA small-size high-PSRR low-dropout (LDO) linear regulator 150-mA LDO, pin-to-pin in SOT-23 package for cost-sensitive solutions

LP3990

ACTIVE
Data sheet Order now

Product details

Rating Catalog Vin (max) (V) 6 Vin (min) (V) 2 Iout (max) (A) 0.15 Output options Fixed Output Vout (max) (V) 3.3 Vout (min) (V) 0.8 Fixed output options (V) 0.8, 1.2, 1.35, 1.5, 1.8, 2.5, 2.8, 3.3 Noise (µVrms) 150 PSRR at 100 KHz (dB) 35 Iq (typ) (mA) 0.043 Thermal resistance θJA (°C/W) 54 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 120 Operating temperature range (°C) -40 to 125
Rating Catalog Vin (max) (V) 6 Vin (min) (V) 2 Iout (max) (A) 0.15 Output options Fixed Output Vout (max) (V) 3.3 Vout (min) (V) 0.8 Fixed output options (V) 0.8, 1.2, 1.35, 1.5, 1.8, 2.5, 2.8, 3.3 Noise (µVrms) 150 PSRR at 100 KHz (dB) 35 Iq (typ) (mA) 0.043 Thermal resistance θJA (°C/W) 54 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Enable Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 120 Operating temperature range (°C) -40 to 125
DSBGA (YZR) 4 1.5625 mm² 1.25 x 1.25 SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8 WSON (NGG) 6 9 mm² 3 x 3
  • 1% Voltage Accuracy at Room Temperature
  • Stable with Ceramic Capacitor
  • Logic Controlled Enable
  • No Noise Bypass Capacitor Required
  • Thermal-Overload and Short-Circuit
    Protection
  • Input Voltage Range, 2 V to 6 V
  • Output Voltage Range, 0.8 V to 3.3 V
  • Output Current, 150 mA
  • Output Stable - Capacitors, 1 µF
  • Virtually Zero IQ (Disabled), < 10 nA
  • Very Low IQ (Enabled), 43 µA
  • Low Output Noise, 150 µVRMS
  • PSRR, 55 dB at 1 kHz
  • Fast Start-Up, 105 µs
  • 1% Voltage Accuracy at Room Temperature
  • Stable with Ceramic Capacitor
  • Logic Controlled Enable
  • No Noise Bypass Capacitor Required
  • Thermal-Overload and Short-Circuit
    Protection
  • Input Voltage Range, 2 V to 6 V
  • Output Voltage Range, 0.8 V to 3.3 V
  • Output Current, 150 mA
  • Output Stable - Capacitors, 1 µF
  • Virtually Zero IQ (Disabled), < 10 nA
  • Very Low IQ (Enabled), 43 µA
  • Low Output Noise, 150 µVRMS
  • PSRR, 55 dB at 1 kHz
  • Fast Start-Up, 105 µs

The LP3990 regulator is designed to meet the requirements of portable, battery-powered systems providing an accurate output voltage, low-noise, and low-quiescent current. The LP3990 will provide a 0.8-V output from the low input voltage of 2 V at up to a 150-mA load current. When switched into shutdown mode via a logic signal at the enable pin (EN), the power consumption is reduced to virtually zero.

The LP3990 is designed to be stable with space-saving ceramic capacitors with values as low as 1 µF.

Performance is specified for a –40°C to 125°C junction temperature range.

For output voltages other than 0.8 V, 1.2 V, 1.35 V, 1.5 V, 1.8 V, 2.5 V, 2.8 V, or 3.3 V, please contact the Texas Instruments sales office.

The LP3990 regulator is designed to meet the requirements of portable, battery-powered systems providing an accurate output voltage, low-noise, and low-quiescent current. The LP3990 will provide a 0.8-V output from the low input voltage of 2 V at up to a 150-mA load current. When switched into shutdown mode via a logic signal at the enable pin (EN), the power consumption is reduced to virtually zero.

The LP3990 is designed to be stable with space-saving ceramic capacitors with values as low as 1 µF.

Performance is specified for a –40°C to 125°C junction temperature range.

For output voltages other than 0.8 V, 1.2 V, 1.35 V, 1.5 V, 1.8 V, 2.5 V, 2.8 V, or 3.3 V, please contact the Texas Instruments sales office.
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Technical documentation

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* Data sheet LP3990 150-mA Linear Voltage Regulator for Digital Applications datasheet (Rev. J) PDF | HTML 26 Sep 2014

Design & development

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Simulation model

LP3990_0P8 PSpice Transient Model

SNVMAX8.ZIP (67 KB) - PSpice Model
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Simulation model

LP3990_0P8 Unencrypted PSpice Transient Model

SNVMAX7.ZIP (2 KB) - PSpice Model
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Simulation model

LP3990_1P2 PSpice Transient Model

SNVMAX3.ZIP (69 KB) - PSpice Model
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Simulation model

LP3990_1P2 Unencrypted PSpice Transient Model

SNVMAX4.ZIP (2 KB) - PSpice Model
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Simulation model

LP3990_1P35 PSpice Transient Model

SNVMAX6.ZIP (69 KB) - PSpice Model
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Simulation model

LP3990_1P35 Unencrypted PSpice Transient Model

SNVMAX5.ZIP (2 KB) - PSpice Model
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Simulation model

LP3990_1P5 PSpice Transient Model

SNVMAY3.ZIP (70 KB) - PSpice Model
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Simulation model

LP3990_1P5 Unencrypted PSpice Transient Model

SNVMAY4.ZIP (2 KB) - PSpice Model
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Simulation model

LP3990_1P8 PSpice Transient Model

SNVMAY2.ZIP (69 KB) - PSpice Model
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Simulation model

LP3990_1P8 Unencrypted PSpice Transient Model

SNVMAY1.ZIP (2 KB) - PSpice Model
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Simulation model

LP3990_2P5 PSpice Transient Model

SNVMAY0.ZIP (70 KB) - PSpice Model
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Simulation model

LP3990_2P5 Unencrypted PSpice Transient Model

SNVMAX9.ZIP (2 KB) - PSpice Model
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Simulation model

LP3990_2P8 PSpice Transient Model

SNVMAY5.ZIP (71 KB) - PSpice Model
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Simulation model

LP3990_2P8 Unencrypted PSpice Transient Model

SNVMAY6.ZIP (2 KB) - PSpice Model
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Reference designs

TIDA-00574 — Xilinx Zynq 7000 Series 5W Small Efficient Low-Noise Power Solution Reference Design

The TIDA-00574 shows small solution size and high curren density & low noise power solution.  It supports internal sequencing and high output voltage accuracy.
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
DSBGA (YZR) 4 Ultra Librarian
SOT-23 (DBV) 5 Ultra Librarian
WSON (NGG) 6 Ultra Librarian
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