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L7809CV

LDO Regulator

The L7809CV is a ldo regulator from STMicroelectronics. View the full L7809CV datasheet below including key specifications, absolute maximum ratings.

Official L7809CV datasheet (PDF) — the source this page was extracted from.

Manufacturer

STMicroelectronics

Package

TO-220, TO-2

L7809CV Key Specifications

ParameterValue
Output Current1.5A
Quiescent Current8 mA
Mounting TypeThrough Hole
Number of Regulators1
Operating Temperature0°C ~ 125°C
Output ConfigurationPositive
Output TypeFixed
Package / CaseTO-220-3
Protection FeaturesOver Temperature, Short Circuit
PSRR55dB (120Hz)
Supplier Device PackageTO-220
Input Voltage (Max)35V
Output Voltage9V
Dropout Voltage2V @ 1A (Typ)

L7809CV 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

L7809CV 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.

L7809CV 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

L7809CV Typical Application

L7809CV 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
L7809CPSTMicroelectronicsTO-220FP
L7809CTSTMicroelectronicsTO-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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