NEC UPC305G2, UPC305C Datasheet

DATA SHEET

BIPOLAR ANALOG INTEGRATED CI RCUT

µµµµ

PC305

POSITIVE VOLTAGE STABILIZED POWER SUPPLY

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)

Wide output voltage variable range Vo: 4.5 to 30 V, V

•

Excellent load stability 0.02%

•

Good ripple rejection ratio 0.003%/V

•

DIF

: 3 to 30 V

Current limiter

Current output

Input GND

µ

PC305C, 305G2

1 2 3 4

8 7 6 5

Output Compensation Error detection Reference voltage

ORDERING INFORMATION

Part Number Package

PC305C 8-pin plastic DIP (7.62 mm (300))

µ

PC305G2 8-pin plastic SOP (5.72 mm (225))

µ

EQUIVALENT CIRCUIT

R

7

2.8 kΩ

Q

11

12

Q

13

Q

10

Q

9

Q

7

6

Q

8

R

4

1

D

3 kΩ

R

3

6.8 k

Ω

R

3 kΩ

2

Q

1

Q

18

R

4.4 kΩ Q

Q

4

2

Q

1

C 5 pF

R

5

2.2 kΩ

1.86 kΩ

6

Q

5

Q

3

Input

R

9

R

1.32 kΩ

600 Ω

Q

15

Q

14

R

8

Q

16

Q

17

3

10

Current output

2

Current limiter

1

Output

8

Compensation

7

Error detection

6

Reference voltage

5

GND

4

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 devices/types available in every country. Please check with local NEC representative for availability and additional information.

Document No. G10633EJ3V0DS00 (3rd edition) Date Published December 1999 N CP(K) Printed in Japan

©

1999

µµµµ

PC305

ABSOLUTE MAXIMUM RATINGS (Unless otherwise specified, TA = 25

Parameter Symbol Input Voltage V Input − Output Voltage Difference V Maximum Output Current I Total Loss P Operating Temperature T Storage Temperature T

A

Notes 1.

Where T Where TA > +25°C, perform derating at TJ MAX. 125°C, −4.4 mW/°C.

2.

> +55°C, perform derating at TJ MAX. 125°C, −5 mW/°C.

IN

DIF

O

T

A

stg

PC305C

µ

350

Note 1

0.3 to +40 V

−

40 V 50 mA

0 to +70

55 to +125

−

C)

°°°°

PC305G2 Unit

µ

Note 2

440

mW

C

°

C

°

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.

ELECTRICAL SPECIFICATIONS (Unless otherwise specified, TA = 25

Parameter Symbol Condition MIN. TYP. MAX. Unit Input Voltage Range V Output Voltage Range V Input − Output Voltage Difference V Load Stability REG

Ripple Rejection Ratio REJ C Temperature Stability 0°C ≤ TA ≤ 70°C0.31.0% Reference Voltage V

Long-time Stability 0.1 % Supply Current under No Load I

IN

OUT

DIF

L

0 ≤ IO ≤ 12 mA, RSC = 18

IN

REF

N

CC

OUT

VIN – V VIN – V

≤ 5 V 0.025 0.06 %/VInput Stability REG

OUT

> 5 V 0.015 0.03 %/V

REF

= 10 µF, f = 120 Hz 0.003 %/V

10 Hz ≤ f ≤ 10 kHz, C

REF

C

= 0.1 µF 0.002 %

VIN = 40 V 1.0 2.0 mA

REF

Ω

= 0 µF 0.005 %Output Noise Voltage V

C)

°°°°

8.0 40 V

4.5 30 V

3.0 30 V

0.02 0.05 %

1.65 1.8 1.90 V

Remark

2

SC

: Current-limiting resistor

R

REF

C

: Bypass capacitor of reference voltage pin

Data Sheet G10633EJ3V0DS00

STANDARD CHARACTERISTIC CURVES

= 25

(Unless otherwise specified, T

A

C. Reference values)

°°°°

µµµµ

PC305

500

400

300

[mW]

T

200

Total Loss P

100

0

−0.02

−0.04

PT vs TA Characteristics

µ

PC305G

µ

PC305C

Operating Temperature TA [°C]

Load Stability (2)

TA = 0°C

TA = 25°C

Load Stability (1)

0

−0.01

−0.02

−0.03

Output Voltage Fluctuation (%)

−0.04

100

RSC = 0 Ω

0100806040200 51015

80

60

TA = 0°C

Output Current I

Current-limiting Characteristics

TA = +70°C

A

= +70°C

T

TA = −20°C

O

(mA)

TA = 0°C

TA = 25°C

−0.06

Outout Voltage Fluctuation (%)

−0.08

−0.1

0 102030

3.0

2.8

2.6

Resistance (kΩ)

2

2.4

R

2.2

2.0 51020

TA = +70°C

RSC = 13 Ω

Output Current I

Resistance for Setting Output Voltage

Output Voltage (V)

O

(mA)

R1//R2 = 2 kΩ

R1 = 1110×V

R

2

TA = −20°C

Output Voltage Drop Ratio (%)

40

OUT

(Ω)

Pickup Voltage Across Pins <1> and <8> (V)

50 0806020

TA = −20°C

40

20

RSC = 13 Ω

0

050

0.63.2

0.5

0.4

0.3

0.2

10 20 30 40

Output Current I

Current-limiting Pickup Voltage

Operating Temperature T

40

O

(mA)

A

(°C)

Data Sheet G10633EJ3V0DS00

3