L7809CD2T
9V Positive Linear Voltage RegulatorThe L7809CD2T is a 9v positive linear voltage regulator from STMicroelectronics. View the full L7809CD2T datasheet below including key specifications, absolute maximum ratings.
L7809CD2T shares its datasheet with L7809CV, whose page lists every part number it covers.
Official L7809CD2T datasheet (PDF) — the source this page was extracted from.
L7809CD2T Key Specifications
| Parameter | Value |
|---|---|
| Protection | Thermal overload, short circuit, output transition SOA |
| Output Current | up to 1.5A |
| Output Voltage | 9V (8.65V to 9.35V at TJ=25°C) |
| Dropout Voltage | 2V typ, 2.5V max at IO=1A |
| Quiescent Current | 8mA max |
| Input Voltage (Max) | 35V |
| Storage Temperature | -65°C to 150°C |
| Operating Junction Temperature | 0°C to 150°C |
| Thermal Resistance Junction-Case | 3°C/W max |
| Thermal Resistance Junction-Ambient | 62.5°C/W max |
L7809CD2T 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
L7809CD2T Absolute Maximum Ratings
| Symbol | Parameter² | Parameter² | Value | Unit |
|---|---|---|---|---|
| V I | DC Input Voltage | for V O = 5 to 18V | 35 | V |
| V I | DC Input Voltage | for V O = 20, 24V | 40 | V |
| I O | Output Current | Output Current | Internally Limited | |
| P tot | Power Dissipation | Power Dissipation | Internally Limited | |
| T stg | Storage Temperature Range | Storage Temperature Range | -65 to 150 | °C |
| T op | OperatingJunctionTemperature Range | for L7800 | -55 to 150 | °C |
| T op | OperatingJunctionTemperature Range | for L7800C | 0 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.
L7809CD2T Thermal Information
| Symbol | Parameter | D 2 PAK | TO-220 | TO-220FP | TO-3 | Unit |
|---|---|---|---|---|---|---|
| R thj-case | Thermal Resistance Junction-case Max | 3 | 5 | 5 | 4 | °C/W |
| R thj-amb | Thermal Resistance Junction-ambient Max | 62.5 | 50 | 60 | 35 | °C/W |
L7809CD2T Typical Application
L7809CD2T Package Information
| DIM. | mm. | mm. | mm. | inch | inch | inch |
|---|---|---|---|---|---|---|
| DIM. | MIN. | TYP | MAX. | MIN. | TYP. | MAX. |
| A | 11.85 | 0.466 | ||||
| B | 0.96 | 1.05 | 1.10 | 0.037 | 0.041 | 0.043 |
| C | 1.70 | 0.066 | ||||
| D | 8.7 | 0.342 | ||||
| E | 20.0 | 0.787 | ||||
| G | 10.9 | 0.429 | ||||
| N | 16.9 | 0.665 | ||||
| P | 26.2 | 1.031 | ||||
| R | 3.88 | 4.09 | 0.152 | 0.161 | ||
| U | 39.5 | 1.555 | ||||
| V | 30.10 | 1.185 |
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.
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