ChongMing Group (HK) Int'l Co., Ltd
CHONGMING GROUP (HK) INT'L CO., LTD.
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L78xxC
Positive voltage regulators
Features
■ Output current to 1.5 A
■ Output voltages of 5; 6; 8; 8.5; 9; 12; 15; 18; 24 V
■ Thermal overload protection
■ Short circuit protection
■ Output transition SOA protection
Description
The L78xx series of three-terminal positive regulators is available in TO-220, TO-220FP, TO-3, D2PAK and DPAK packages and several fixed output voltages, making it useful in a wide range of applications. These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each type employs 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.
Figure 1. Block diagram
Figure 2. Pin connections (top view)
Absolute maximum ratings
| Symbol | Parameter | Value | Unit |
| VI | DC input voltage for VO= 5 to 18 V | 35 | V |
| DC input voltage for VO= 20, 24 V | 40 | V | |
| IO | Output current | Internally limited | |
| PD | Power dissipation | Internally limited | |
| TSTG | Storage temperature range | -65 to 150 | °C |
| TOP | Operating junction temperature range For L7800 | -55 to 150 | °C |
| Operating junction temperature range for L7800C | 0 to 150 | °C |