Low Frequency PWM Controlled, Step‐Up DC/DC Converters

Series

465

4

■General Description

■Features

■Applications

■Typical Application Circuit

■Typical Performance

Characteristic

The XC6373 is a group of PWM controlled step-up DC/DC converter ICs.

The XC6373 series employs CMOS process and laser trimming

technologies so as to attain low power and high accuracy.

The implemention of a new phase compensation circuit and a slow start

function ensure excellent transient response and improved performance.

The series is particularly suited for use with pager applications because

of their low power consumption and low noise characteristics.

Output voltage can be selected from 2.0V to 7.0V in 0.1V increments

(accuracy; ±2.5%). Oscillator frequency is set at 30kHZ (±20%) so as to

attain the lowest consumption current possible.

A step-up converter circuit can be configured using the XC6373 IC with a

coil, a diode, and a capacitor.

5-pin packages, which are provided with either a CE (Chip enable)

function that reduces power consumption during shut-down mode, or a

SOT-89 small package.

Operating (start-up) voltage range

: 0.9V~10V

Output voltage range : 2.0V~7.0V in 0.1V increments

Highly accurate

: Set-up voltage ±2.5%

Oscillator frequency

: 30kHz (±20%)

Maximum output current (Tr. Built-In)

Highly efficient (Tr. Built-In)

selectable for 5-pin package units.

Phase compensation and slow start-up circuits included.

Small Package

: SOT-89 mini-power mold (3-pin, 5-pin)

Note (1): Performance depends on external components and

PCB layout.

GCellular phones, pagers

GPalmtops

GCameras, video recorders

GPortable equipment

NCMOS Low Power Consumption

NOperating Voltage

: 0.9V~10.0V

NOutput Voltage Range

: 2.0V~7.0V

NOutput Voltage Accuracy: ±2.5%

NOscillator Frequency

: 30kHz

0

20

40

60

80

100

0.1

1

10

100

1000

1.5V

2.7V

XC6373A300PR

1.2V

1.8V

L＝100μH（CＲ54），

123

SOT−89

(TOP VIEW)

GND

（Tantalum）

SD

L

04S_06XC6373 02.09.12 14:49 ページ 465