KA7805AETU.. datasheet(2/29 Pages) ONSEMI

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KA78XXE / KA78XXAE Rev. 1.9

April 2015

KA78XXE / KA78XXAE

3-Terminal 1 A Positive Voltage Regulator

Features

• Output Current up to 1 A

• Output Voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24 V

• Thermal Overload Protection

• Short-Circuit Protection

• Output Transistor Safe Operating Area Protection

Block Diagram

Figure 1. Block Diagram

SERIES

PASS

ELEMENT

SOA

PROTECTION

ERROR

AMPLIFIER

THERMAL

PROTECTION

CURRENT

GENERATOR

REFERENCE

VOLTAGE

STARTING

CIRCUIT

OUTPUT

GND

INPUT

Description

The KA78XXE / KA78XXAE series of three-terminal posi-

tive regulators is available in the TO-220 / D-PAK pack-

age 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. 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 for adjustable voltages

and currents.

1. Input

2. GND

3. Output

GND

TO-220

D-PAK

GND

(Dual Gauge)

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