LP38691-Q1

ACTIVE

Automotive 500-mA, 10-V, low-dropout voltage regulator

Product details

Output options Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 10 Vin (min) (V) 2.7 Vout (max) (V) 5 Vout (min) (V) 1.8 Fixed output options (V) 1.8, 2.5, 3.3, 5 Rating Automotive Noise (µVrms) 80 PSRR at 100 KHz (dB) 50 Iq (typ) (mA) 0.055 Thermal resistance θJA (°C/W) 51 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Foldback Overcurrent protection Accuracy (%) 4 Dropout voltage (Vdo) (typ) (mV) 250 Operating temperature range (°C) -40 to 125
Output options Fixed Output Iout (max) (A) 0.5 Vin (max) (V) 10 Vin (min) (V) 2.7 Vout (max) (V) 5 Vout (min) (V) 1.8 Fixed output options (V) 1.8, 2.5, 3.3, 5 Rating Automotive Noise (µVrms) 80 PSRR at 100 KHz (dB) 50 Iq (typ) (mA) 0.055 Thermal resistance θJA (°C/W) 51 Load capacitance (min) (µF) 1 Regulated outputs (#) 1 Features Foldback Overcurrent protection Accuracy (%) 4 Dropout voltage (Vdo) (typ) (mV) 250 Operating temperature range (°C) -40 to 125
WSON (NGG) 6 9 mm² 3 x 3
  • Wide Input Voltage Range (2.7 V to 10 V)
  • All WSON Options are Available as AEC-Q100 Grade 1
  • 2% Output Accuracy (25°C)
  • Low Dropout Voltage: 250 mV at 500 mA (Typical,
    5 V Out)
  • Precision (Trimmed) Bandgap Reference
  • Ensured Specifications for –40°C to 125°C
  • 1-µA Off-State Quiescent Current
  • Thermal Overload Protection
  • Foldback Current Limiting
  • Ground Pin Current: 55 µA (typical) at full load
  • Enable Pin (LP38693)
  • Wide Input Voltage Range (2.7 V to 10 V)
  • All WSON Options are Available as AEC-Q100 Grade 1
  • 2% Output Accuracy (25°C)
  • Low Dropout Voltage: 250 mV at 500 mA (Typical,
    5 V Out)
  • Precision (Trimmed) Bandgap Reference
  • Ensured Specifications for –40°C to 125°C
  • 1-µA Off-State Quiescent Current
  • Thermal Overload Protection
  • Foldback Current Limiting
  • Ground Pin Current: 55 µA (typical) at full load
  • Enable Pin (LP38693)

The LP3869x low-dropout CMOS linear regulators provide tight output tolerance (2% typical), extremely low dropout voltage (250 mV at 500-mA load current, VOUT = 5 V), and excellent AC performance using ultralow equivalent series resistance (ESR) ceramic output capacitors.

The low thermal resistance of the WSON, SOT-223, and TO-252 packages allow use of the full operating current even in high ambient temperature environments.

The use of a PMOS power transistor means that no DC base-drive current is required to bias it, thus allowing ground pin current to remain below 100 µA regardless of load current, input voltage, or operating temperature.

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

The LP3869x low-dropout CMOS linear regulators provide tight output tolerance (2% typical), extremely low dropout voltage (250 mV at 500-mA load current, VOUT = 5 V), and excellent AC performance using ultralow equivalent series resistance (ESR) ceramic output capacitors.

The low thermal resistance of the WSON, SOT-223, and TO-252 packages allow use of the full operating current even in high ambient temperature environments.

The use of a PMOS power transistor means that no DC base-drive current is required to bias it, thus allowing ground pin current to remain below 100 µA regardless of load current, input voltage, or operating temperature.

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

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Technical documentation

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* Data sheet LP3869x/-Q1 500-mA Low-Dropout CMOS Linear Regulators Stable With Ceramic Output Capacitors datasheet (Rev. O) PDF | HTML 02 Dec 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

LP38691_3P3 PSpice Transient Model

SNVM582.ZIP (38 KB) - PSpice Model
Simulation model

LP38691_3P3 Unencrypted PSpice Transient Model

SNVMA74.ZIP (1 KB) - PSpice Model
Package Pins CAD symbols, footprints & 3D models
WSON (NGG) 6 Ultra Librarian

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