Description
LM7809 Voltage Regulator TO220 IC series is of three terminal positive regulators are available in the TO-220 package and with several fixed output voltages, making them useful in a wide range of applications. Each type employs internal current limiting, thermal shut down and safe operating area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents.
These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each type embeds internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1 A output current.
Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltage and currents.
Symbol Parameter Value Unit
VI DC input voltage
for VO= 5 to 18 V 35
V
for VO= 20, 24 V 40
IO Output current Internally limited
PD Power dissipation Internally limited
TSTG Storage temperature range -65 to 150 °C
TOP Operating junction temperature range
for L78xxC, L78xxAC 0 to 125
°C
for L78xxAB -40 to 125
Features of LM7809 Voltage Regulator TO220
- Output Current up to 1A
- Output Voltages of 5, 6, 8, 9, 12, 15, 18, 24
- Thermal Overload Protection
- Short Circuit Protection
- Output Transistor Safe Operating Area Protection
Specifications of LM7809 IC
| Symbol | Parameter | Min | Type | Max | Units |
| VO | Output Voltage | 8.65 | 9 | 9.35 | V |
| Regline | Line Regulation | 6 | 180 | m V | |
| Regload | Load Regulation | 12 | 180 | m V | |
| IQ | Quiescent Current | 5 | 8 | °C | |
| RR | Ripple Rejection | 56 | 71 | d B |
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