Product details

Output options Adjustable Output, Fixed Output Iout (Max) (A) 0.25 Vin (Max) (V) 30 Vin (Min) (V) -20 Vout (Max) (V) 29 Vout (Min) (V) 1.23 Fixed output options (V) 5 Noise (uVrms) 80 Iq (Typ) (mA) 0.21 Thermal resistance θJA (°C/W) 44 Rating Catalog Load capacitance (Min) (µF) 2.2 Regulated outputs (#) 1 Features Enable, Power Good Accuracy (%) 3 PSRR @ 100 KHz (dB) 14 Dropout voltage (Vdo) (Typ) (mV) 800 Operating temperature range (C) -40 to 125
Output options Adjustable Output, Fixed Output Iout (Max) (A) 0.25 Vin (Max) (V) 30 Vin (Min) (V) -20 Vout (Max) (V) 29 Vout (Min) (V) 1.23 Fixed output options (V) 5 Noise (uVrms) 80 Iq (Typ) (mA) 0.21 Thermal resistance θJA (°C/W) 44 Rating Catalog Load capacitance (Min) (µF) 2.2 Regulated outputs (#) 1 Features Enable, Power Good Accuracy (%) 3 PSRR @ 100 KHz (dB) 14 Dropout voltage (Vdo) (Typ) (mV) 800 Operating temperature range (C) -40 to 125
SOIC (D) 8 19 mm² 4.9 x 3.9 TO-220 (NDE) 3 47 mm² 10.16 x 4.58 TO-263 (KTT) 3 155 mm² 10.16 x 15.24
  • 5-V Output within 1.2% Over Temperature
    (A Grade)
  • Adjustable 1.23-V to 29-V Output Voltage Available (LP2954IM and LP2954AIM)
  • Ensured 250-mA Output Current
  • Extremely Low Quiescent Current
  • Low Dropout Voltage
  • Reverse Battery Protection
  • Extremely Tight Line and Load Regulation
  • Very Low Temperature Coefficient
  • Current and Thermal Limiting
  • Pin Compatible with LM2940 and LM340
    (5-V Version Only)
  • Adjustable Version Adds ERROR Flag to Warn of Output Drop and a Logic-Controlled Shutdown
  • 5-V Output within 1.2% Over Temperature
    (A Grade)
  • Adjustable 1.23-V to 29-V Output Voltage Available (LP2954IM and LP2954AIM)
  • Ensured 250-mA Output Current
  • Extremely Low Quiescent Current
  • Low Dropout Voltage
  • Reverse Battery Protection
  • Extremely Tight Line and Load Regulation
  • Very Low Temperature Coefficient
  • Current and Thermal Limiting
  • Pin Compatible with LM2940 and LM340
    (5-V Version Only)
  • Adjustable Version Adds ERROR Flag to Warn of Output Drop and a Logic-Controlled Shutdown

The LP2954 is a 5-V micropower LDO with very low quiescent current (90 μA typical at 1-mA load) and very low dropout voltage (typically 60 mV at light loads and 470 mV at 250-mA load current).

The quiescent current increases only slightly at dropout (120 μA typical), which prolongs battery life.

The LP2954 with a fixed 5-V output is available in three-pin TO-220 and DDPAK/TO-263 packages. The adjustable LP2954 is provided in an 8-pin, small-outline SOIC package. The adjustable version also provides a resistor network which can be pin strapped to set the output to any voltage from to 1.23 V to 29 V.

Reverse battery protection is provided for the IN pin.

The tight line and load regulation (0.04% typical), as well as very low output temperature coefficient make the LP2954 well suited for use as a low-power voltage reference.

Output accuracy is ensured at both room temperature and over the entire operating temperature range.

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

The LP2954 is a 5-V micropower LDO with very low quiescent current (90 μA typical at 1-mA load) and very low dropout voltage (typically 60 mV at light loads and 470 mV at 250-mA load current).

The quiescent current increases only slightly at dropout (120 μA typical), which prolongs battery life.

The LP2954 with a fixed 5-V output is available in three-pin TO-220 and DDPAK/TO-263 packages. The adjustable LP2954 is provided in an 8-pin, small-outline SOIC package. The adjustable version also provides a resistor network which can be pin strapped to set the output to any voltage from to 1.23 V to 29 V.

Reverse battery protection is provided for the IN pin.

The tight line and load regulation (0.04% typical), as well as very low output temperature coefficient make the LP2954 well suited for use as a low-power voltage reference.

Output accuracy is ensured at both room temperature and over the entire operating temperature range.

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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Type Title Date
* Data sheet LP2954, LP2954A 5-V and Adjustable Micropower LDOs datasheet (Rev. E) 28 Jul 2016
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021

Design & development

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

Simulation model

lp2954a PSpice Transient Model

SLVMAI9.ZIP (47 KB) - PSpice Model
Simulation model

LP2954A Unencrypted PSpice Transient Model

SNVMAB2.ZIP (2 KB) - PSpice Model
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Package Pins Download
DDPAK/TO-263 (KTT) 3 View options
SOIC (D) 8 View options
TO-220 (NDE) 3 View options

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