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“Standard”:
2.
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(Note 1) “Renesas Electronics” as used in this document means Renesas Electronics Corporation and also includes its majority-
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DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUT
µ
PC305
POSITIVE VOLTAGE STABILIZED POWER SUPPLY
DESCRIPTION
The
µ
PC305 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
•
Wide output voltage variable range: Vo = 4.5 to 30 V, V
DIF
= 3 to 30 V
•
Excellent load stability: 0.02%
•
Good ripple rejection ratio: 0.003%/V
Current limiter
1
Current output
2
Input
3
GND
4
8
Output
7
Compensation
6
Error detection
5
Reference voltage
PIN CONFIGURATION (Top view)
ORDERING INFORMATION
Part Number
Package
8-pin plastic SOP (5.72 mm (225) )
µ
PC305G2
EQUIVALENT CIRCUIT
3
R
10
600
Ω
Q
14
Q
13
Q
10
R
8
1.86 kΩ
Q
7
Q
8
D
1
R
4
3 kΩ
R
7
2.8 kΩ
Intput
Current output
Q
12
Q
11
2
Q
15
R
9
1.32 kΩ
1
8
7
Current limiter
Output
Compensation
Q
9
Q
6
R
6
4.4 kΩ
Q
5
Q
16
Q
4
R
3
6.8 kΩ
Q
17
C
1
5 pF
Q
18
R
2
3 kΩ
Q
2
Q
3
6
5
Error detection
Reference voltage
Q
1
R
5
2.2 kΩ
4
GND
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all products and/or types are available in every country. Please check with an NEC Electronics
sales representative for availability and additional information.
Document No. G10633EJ5V0DS00 (5th edition)
Date Published October 2003 NS CP(K)
Printed in Japan
The mark
shows major revised points.
2003
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