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L7809CP

9V Positive Linear Voltage Regulator

The L7809CP is a 9v positive linear voltage regulator from STMicroelectronics. View the full L7809CP datasheet below including key specifications, absolute maximum ratings.

L7809CP shares its datasheet with L7809CV, whose page lists every part number it covers.

Official L7809CP datasheet (PDF) — the source this page was extracted from.

Manufacturer

STMicroelectronics

Package

TO-220FP

L7809CP Key Specifications

ParameterValue
Output Currentup to 1.5A
Output Voltage9V (8.65V to 9.35V at TJ=25°C)
Dropout Voltage2V typ at IO=1A
Line Regulation180mV max (VI=11.5 to 26V)
Load Regulation180mV max (IO=5mA to 1.5A)
Quiescent Current8mA max
Input Voltage (Max)35V
Storage Temperature-65°C to 150°C
Operating Junction Temperature0°C to 150°C
Thermal Resistance Junction-Case5°C/W (TO-220FP)
Thermal Resistance Junction-Ambient60°C/W (TO-220FP)

L7809CP Overview

Part: L7800 series — STMicroelectronics

Type: Positive Voltage Regulator

Description: The L7800 series is a family of three-terminal positive voltage regulators offering fixed output voltages from 5 V to 24 V, capable of delivering over 1 A output current with adequate heat sinking.

Operating Conditions:

  • Operating junction temperature: -55 to 150 °C (for L7800), 0 to 150 °C (for L7800C)
  • Output current: Up to 1.5 A

Absolute Maximum Ratings:

  • Max DC Input Voltage: 35 V (for V O = 5 to 18V), 40 V (for V O = 20, 24V)
  • Max continuous current: Internally Limited
  • Max junction/storage temperature: 150 °C

Key Specs:

  • Output Voltage (L7805, T J = 25°C): 4.8 V min, 5 V typ, 5.2 V max
  • Line Regulation (L7805, V I = 7 to 25 V, T J = 25°C): 3 mV typ, 50 mV max
  • Load Regulation (L7805, I O = 5 mA to 1.5 A, T J = 25°C): 100 mV max
  • Quiescent Current (L7805, T J = 25°C): 6 mA max
  • Output Noise Voltage (L7805, B = 10Hz to 100KHz, T J = 25°C): 40 mV/V O max
  • Supply Voltage Rejection (L7805, V I = 8 to 18 V, f = 120Hz): 68 dB min
  • Dropout Voltage (L7805, I O = 1 A, T J = 25°C): 2 V typ, 2.5 V max
  • Short Circuit Current (L7805, V I = 35 V, T J = 25°C): 0.75 A typ, 1.2 A max

Features:

  • Thermal overload protection
  • Short circuit protection
  • Output transition SOA protection
  • Internal current limiting
  • Thermal shut-down
  • Safe area protection

Applications:

  • Local on-card regulation
  • Adjustable voltage and current applications (with external components)

Package:

  • TO-220
  • TO-220FP
  • TO-3
  • D 2 PAK

L7809CP Absolute Maximum Ratings

SymbolParameter²Parameter²ValueUnit
V IDC Input Voltagefor V O = 5 to 18V35V
V IDC Input Voltagefor V O = 20, 24V40V
I OOutput CurrentOutput CurrentInternally Limited
P totPower DissipationPower DissipationInternally Limited
T stgStorage Temperature RangeStorage Temperature Range-65 to 150°C
T opOperatingJunctionTemperature Rangefor L7800-55 to 150°C
T opOperatingJunctionTemperature Rangefor L7800C0 to 150°C

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.

L7809CP Thermal Information

SymbolParameterD 2 PAKTO-220TO-220FPTO-3Unit
R thj-caseThermal Resistance Junction-case Max3554°C/W
R thj-ambThermal Resistance Junction-ambient Max62.5506035°C/W

L7809CP Typical Application

L7809CP Package Information

DIM.mm.mm.mm.inchinchinch
DIM.MIN.TYPMAX.MIN.TYP.MAX.
A11.850.466
B0.961.051.100.0370.0410.043
C1.700.066
D8.70.342
E20.00.787
G10.90.429
N16.90.665
P26.21.031
R3.884.090.1520.161
U39.51.555
V30.101.185

Variants on the same datasheet

These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.

Part NumberManufacturerPackage
L7809CSTMicroelectronics—
L7809CD2TSTMicroelectronicsD2PAK
L7809CTSTMicroelectronicsTO-3
L7809CVSTMicroelectronicsTO-220-3

Other Integrated Circuits

All Integrated Circuits datasheetsAll STMicroelectronics datasheets (808)

Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.

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