3

LR8

Thermal Characteristics

Package

Power Dissipation

@ T

θ

JC

°C/W

θ

JA

°C/W

TO-92

0.74W

125

170

TO-243AA

1.6W

15

78†

TO-252

2.5W

6.25

50†

†Mounted on FR4 board, 25mm x 25mm x 1.57mm.

Significant PD increase possible on ceramic substrate.

Functional Block Diagram

Overtemp &

Overcurrent

10µA

1.2V

ADJ

LR8

Pass

Element

Typical Application Circuits

LR8

ADJ

*

R1

6.04KΩ

1%

C2

1.0µF

C1

R2

R1

R2

18.2KΩ

1%

Figure 1: High Input Voltage, 5.0V Output Linear Regulator