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BIPOLAR ANALOG INTEGRATED CIRCUT

POSITIVE VOLTAGE STABILIZED POWER SUPPLY

Document No. G10633EJ3V0DS00 (3rd edition)

Date Published December 1999 N CP(K)

Printed in Japan

DATA SHEET

©

1999

DESCRIPTION

The

µPC305 is a high-performance stabilized power supply that can supply a constant voltage in a wide

temperature range even if the input voltage or load voltage fluctuates, by integrating a high-gain error amplifier and a

temperature-compensating constant-voltage diode on a single chip.

FEATURES

PIN CONFIGURATION (Top View)

• Excellent load stability

0.02%

• Good ripple rejection ratio

0.003%/V

ORDERING INFORMATION

Part Number

Package

µPC305C

8-pin plastic DIP (7.62 mm (300))

µPC305G2

8-pin plastic SOP (5.72 mm (225))

EQUIVALENT CIRCUIT

3

2

1

8

7

6

5

4

Input

Current output

Current limiter

Output

Compensation

Error detection

Reference voltage

GND

2.2 k

Ω

5 pF

3 k

Ω

6.8 k

Ω

3 k

Ω

4.4 k

Ω

600

Ω

1.86 k

Ω

1.32 k

Ω

Ω

1

2

3

4

8

7

6

5

Current limiter

Current output

Input

GND

Output

Compensation

Error detection

Reference voltage

PC305C, 305G2

µ