Data Sheet G14451EJ2V0DS00

2

µµµµPC2250 SERIES

ABSOLUTE MAXIMUM RATINGS (Unless otherwise specified, TA = 25°C)

Parameter

Symbol

Rating

Unit

Input Voltage

VIN

–0.3 to +12

V

Total Power Dissipation

PT

1.2

Note

W

Operating Ambient Temperature

TA

–20 to +85

°C

Operating Junction Temperature

TJ

–20 to +150

°C

Storage Temperature

Tstg

–55 to +150

°C

Thermal Resistance (Junction to Case)

Rth (J–C)

10

°C/W

Thermal Resistance (Junction to Ambient)

Rth (J–A)

104

°C/W

Note The total loss is limited by an internal circuit. Where TJ > 150°C, an internal protection circuit cuts off the

output.

Caution If any of the parameters exceeds the absolute maximum ratings, even momentarily, the quality of

the product may be impaired. The absolute maximum ratings are values that may physically

damage the product(s). Be sure to use the product(s) within the ratings.

STANDARD CONNECTION

INPUT

INPUT

Output

Backup capacitor

(for backup)

Reset output

0.33

F

CIN

D1

CO

D2

CDLY

GND

RESET

OUTPUT

++

14

32

µ

CIN

: Determine the capacitance depending on the line between the power supply smoothing circuit and input pin.

Be sure to connect this capacitor to prevent abnormal oscillation.

Use of a capacitor, such as a film

capacitor, with excellent voltage and temperature characteristics is recommended.

Note that some

laminated ceramic capacitors have poor temperature and voltage characteristics. When using a laminated

ceramic capacitor, the capacitance must be stable in the voltage and temperature ranges used.

CO

: Must be 10

µF or more. Be sure to connect this capacitor to prevent oscillation and to improve transient

load stability.

Connect CIN and CO as close to the IC (within 1 to 2 cm) as possible.

D1, D2 : Connect Schottky barrier diodes (with a low forward voltage) if the voltage on the OUTPUT and RESET pins

is lower than that on the GND pin.