L7809CV
POSITIVE VOLTAGE REGULATORS
LDO RegulatorThe L7809CV is a ldo regulator from STMicroelectronics. POSITIVE VOLTAGE REGULATORS. View the full L7809CV datasheet below including key specifications, pinout, absolute maximum ratings.
Key Specifications
| Parameter | Value |
|---|---|
| Output Current | 1.5A |
| Quiescent Current | 8 mA |
| Mounting Type | Through Hole |
| Number of Regulators | 1 |
| Operating Temperature | 0°C ~ 125°C |
| Output Configuration | Positive |
| Output Type | Fixed |
| Package / Case | TO-220-3 |
| Protection Features | Over Temperature, Short Circuit |
| PSRR | 55dB (120Hz) |
| Supplier Device Package | TO-220 |
| Input Voltage (Max) | 35V |
| Output Voltage | 9V |
| Dropout Voltage | 2V @ 1A (Typ) |
Overview
Part: L7800 series
Type: Positive Voltage Regulator
Key Specs:
- Output Current: up to 1.5 A
- Output Voltages: 5 V, 5.2 V, 6 V, 8 V, 8.5 V, 9 V, 12 V, 15 V, 18 V, 24 V
- DC Input Voltage: up to 35 V (for VO= 5 to 18V), up to 40 V (for VO= 20, 24V)
- Operating Junction Temperature: -55 to 150 °C (L7800), 0 to 150 °C (L7800C)
- Dropout Voltage: 2 V (typical) at 1 A
Features:
- Thermal Overload Protection
- Short Circuit Protection
- Output Transition SOA Protection
- Internal Current Limiting
- Thermal Shut-down
- Safe Area Protection
- Can be used with external components for adjustable voltage and currents
Applications:
- Local on-card regulation
Package:
- TO-220
- TO-220FP
- TO-3
- D2PAK
Pin Configuration
L7809CV Pinout
Package: TO-220-3
| Pin Number | Pin Name | Type | Description |
|---|---|---|---|
| 1 | INPUT | I | Unregulated DC input voltage |
| 2 | GND | P | Ground / Common |
| 3 | OUTPUT | O | Regulated +9V output |
Notes
- L7809CV is a fixed +9V positive voltage regulator in TO-220 package with 3 pins
- Maximum input voltage: 35V (for output voltage ≤ 18V)
- Output current capability: up to 1.5A (internally limited)
- Thermal resistance (junction-to-ambient): 50°C/W typical
- Includes internal current limiting, thermal shutdown, and safe area protection
- Output voltage tolerance: ±4.5% at 25°C (8.55V to 9.45V for IO = 5mA to 1A)
Absolute Maximum Ratings
| Symbol | Parameter² | Value | Unit |
|---|---|---|---|
| DC Input Voltage | for VO= 5 to 18V | 35 | |
| VI | for VO= 20, 24V | 40 | |
| IO | Output Current | Internally Limited | |
| Ptot | Power Dissipation | Internally Limited | |
| Tstg | Storage Temperature Range | -65 to 150 | |
| Top | Operating Junction Temperature | for L7800 | -55 to 150 |
| Range | for L7800C | 0 to 150 |
Thermal Information
| Symbol | Parameter | D2PAK | TO-220 | TO-220FP | TO-3 | Unit |
|---|---|---|---|---|---|---|
| Rthj-case | Thermal Resistance Junction-case Max | 3 | 5 | 5 | 4 | °C/W |
| Rthj-amb | Thermal Resistance Junction-ambient Max | 62.5 | 50 | 60 | 35 | °C/W |
Typical Application
Package Information
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- DIM.
- A
- B
- D
- E
- F
- F1
- F2
- G
- G1
- H
- L2
- L3
- L4
- L6
- L7
- DIA.
| mm. | inch | |||
|---|---|---|---|---|
| DIM. | MIN. | TYP | MAX. | MIN. |
| A | 4.4 | 4.6 | 0.173 | |
| A1 | 2.49 | 2.69 | 0.098 | |
| A2 | 0.03 | 0.23 | 0.001 | |
| B | 0.7 | 0.93 | 0.027 | |
| B2 | 1.14 | 1.7 | 0.044 | |
| C | 0.45 | 0.6 | 0.017 | |
| C2 | 1.23 | 1.36 | 0.048 | |
| D | 8.95 | 9.35 | 0.352 | |
| D1 | 8 | |||
| E | 10 | 10.4 | 0.393 | |
| E1 | 8.5 | |||
| G | 4.88 | 5.28 | 0.192 | |
| L | 15 | 15.85 | 0.590 | |
| L2 | 1.27 | 1.4 | 0.050 | |
| L3 | 1.4 | 1.75 | 0.055 | |
| M | 2.4 | 3.2 | 0.094 | |
| R | 0.4 | |||
| DIM. | mm. | inch | ||
| MIN. | TYP | MAX. | MIN. | |
| A | 180 | |||
| C | 12.8 | 13.0 | 13.2 | 0.504 |
| D | 20.2 | 0.795 | ||
| N | 60 | 2.362 | ||
| T | 14.4 | |||
| Ao | 10.50 | 10.6 | 10.70 | 0.413 |
| Bo | 15.70 | 15.80 | 15.90 | 0.618 |
| Ko | 4.80 | 4.90 | 5.00 | 0.189 |
| Po | 3.9 | 4.0 | 4.1 | 0.153 |
| P | 11.9 | 12.0 | 12.1 | 0.468 |
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