SPECIFICATION

Table 1.

COPPER AREA

TOP SIDE*

BACK SIDE

BOARD AREA

THERMAL RESISTANCE

(JUNCTION-TO-AMBIENT)

2500 Sq. mm

2500 Sq. mm

2500 Sq. mm

45°C/W

1000 Sq. mm

2500 Sq. mm

2500 Sq. mm

45°C/W

225 Sq. mm

2500 Sq. mm

2500 Sq. mm

53°C/W

100 Sq. mm

2500 Sq. mm

2500 Sq. mm

59°C/W

1000 Sq. mm

1000 Sq. mm

1000 Sq. mm

52°C/W

1000 Sq. mm

0

1000 Sq. mm

55°C/W

Ripple Rejection

The ripple rejection values are measured with the adjustment pin bypassed. The impedance of

the adjust pin capacitor at the ripple frequency should be less than the value of R1 (normally

100Ωto 200Ω) for a proper bypassing and ripple rejection approaching the values shown. The

size of the required adjust pin capacitor is a function of the input ripple frequency. If R1=100Ω at

120Hz the adjust pin capacitor should be >13mF. At 10kHz only 0.16mF is needed.

The ripple rejection will be a function of output voltage, in circuits without an adjust pin bypass

capacitor. The output ripple will increase directly as a ratio of the output voltage to the reference

PACKAGE DIMENSIONS

Inches (millimeters) unless otherwise noted.

3 LEAD SOT-223 PLASTIC PACKAGE

Marking: A = SOT223

;

***** = datacode