L7818CV Positive Voltage Regulator 18V 1.5A TO-220
The L7818CV is a three-terminal positive voltage regulator part of the L78 series. It is designed for a wide range of applications, specifically providing local on-card regulation to eliminate distribution problems associated with single-point regulation. Each IC is essentially indestructible, as it embeds internal current limiting, thermal shut-down, and safe area protection. While primarily designed as a fixed voltage regulator, it can be used with external components to achieve adjustable voltages and currents.
Features
- High Output Current
- Fixed Output Voltage
- Thermal Overload Protection
- Short Circuit Protection
- Output Transition SOA Protection
Specifications
| Parameter | Specification | Unit / Condition |
|---|---|---|
| Output Voltage (VO) | 18 | V (Typical) |
| Max DC Input Voltage (VI) | 35 | V (for VO = 5 to 18 V) |
| Output Current (IO) | Up to 1.5 | A (Internally limited) |
| Dropout Voltage (Vd) | 2 | V (at IO = 1 A, TJ = 25 °C) |
| Quiescent Current (Id) | 8 | mA (Typical at TJ = 25 °C) |
| Line Regulation (ΔVO) | 360 | mV (Max, VI = 21 to 33 V, TJ = 25 °C) |
| Load Regulation (ΔVO) | 360 | mV (Max, IO = 5 mA to 1.5 A, TJ = 25 °C) |
| Supply Voltage Rejection (SVR) | 53 | dB (Typical, f = 120 Hz) |
| Operating Junction Temperature (TOP) | 0 to 125 | °C |
| Package Type | TO-220 | Through-hole |
| Thermal Resistance (Junction-Case) | 5 | °C/W |
| Thermal Resistance (Junction-Ambient) | 50 | °C/W |
| Dim. | mm | ||
|---|---|---|---|
| Min. | Typ. | Max. | |
| A | 4.40 | 4.60 | |
| b | 0.61 | 0.88 | |
| b1 | 1.14 | 1.70 | |
| c | 0.48 | 0.70 | |
| D | 15.25 | 15.75 | |
| E | 10.00 | 10.40 | |
| e | 2.40 | 2.70 | |
| e1 | 4.95 | 5.15 | |
| F | 0.51 | 0.60 | |
| H1 | 6.20 | 6.60 | |
| J1 | 2.40 | 2.72 | |
| L | 13.00 | 14.00 | |
| L1 | 3.50 | 3.93 | |
| L20 | 16.40 | ||
| L30 | 28.90 | ||
| ∅P | 3.75 | 3.85 | |
| Q | 2.65 | 2.95 | |
Applications
- Local On-Card Regulation
- Fixed Voltage Power Supplies
- Adjustable Voltage/Current Regulators
- High Current Voltage Regulation
Package Content
- 1 x L7818CV Positive Voltage Regulator 18V 1.5A TO-220