Sanken Electric Co SI-3003S Datasheet

3-terminal Dropper Type Regulator SI-3003S

Features

● 3-terminal IC regulator with 0.8A output current

● Voltage accuracy of ±2%

● Low Dropout voltage 0.5V at I

Built-in constant current type overcurrent, overvoltage and thermal protection circuits

●

● TO-220 equivalent full-mold package

Absolute Maximum Ratings

Parameter Symbol Unit ConditionsRatings
DC input voltage
Output current

Power Dissipation

Junction temperature
Operating temperature
Storage temperature

Junction to case thermal resistance

Junction to ambient-air thermal
resistance

V

P
P

T

Tstg

IN

I

O

D1

D2

Tj

OP

j-c

j-a

Electrical Characteristics

Parameter Symbol

V

V

V
V
R

V

DIF

O LINE

O

REJ

Iq

I

S1

IN

O

Input voltage
Output voltage

Dropout voltage

Line regulation
Load regulation
Ripple rejection
Quiescent circuit current
Overcurrent protection starting

current

Notes:
*1. Since P

= (VIN–VO) • IO=22 (W), V

D(max)

conditions. Refer to the Ta—P
*2. Refer to the dropout voltage.
*3. IS1 rating shall be the point at which the output voltage V

0.5A, 1V at IO 0.8A

O

35

0.8
22

1.8

–40 to +150
–40 to +100
–40 to +150

5.5

66.7

2

*

V

A
W
W

ºC
ºC
ºC

ºC/W

ºC/W

(Tj=25ºC, VIN=14V, IO=0.5A unless otherwise specified)

Ratings

min typ max

2

630V

*

4.90 5.00 5.10 V

LOAD

54
3

3

*

0.9 A

and I

IN(max)

curve to compute the corresponding values.

D

O(max)

Unit Conditions

1

*

0.5

1.0

V

V

30 mV

100 mV

dB

10 mA

may be limited depending on operating

(VIN=14V, IO=0.5A) drops to –5%.

O

(Ta=25ºC)

With infinite heatsink
Stand-alone without heatsink

Stand-alone without heatsink

IO 0.5A

0.8A

I

O

=8 to 16V

V

IN

I

=0 to 0.5A

O

f=100 to 120Hz

=0A

I

O

±0.2

0.94

0.85

(unit: mm)

2 max

±0.15

+0.2
–0.1

Terminal connections

1. V

IN

2. (NC)

3. GND

4. (NC)

5. V

O

(Forming No. 1115)

External Dimensions

±0.2

±0.3

16.9

(13.5)

±0.15

4•P1.7

(root dimensions)

3.2

±0.2

7.9

±0.2

4

=6.8

0.5

a

±0.15

10

b

12345

Equivalent Circuit Diagram

V

IN

1

TSD

GND

DRIVE

3

OCP

ERR

Standard Circuit Diagram

2

D

*

1

4.2

2.8

REF

±0.2
±0.2

DET

±0.15

2.6

+0.2

–0.1

0.45

a: Type No.
b: Lot No.

V

O

5

1

SI-3003S

1

+

*

DC input

C

V

IN

Co : Output capacitor (47 to 100µF, 50V)

1

C

: Anti-oscillation capacitors (C1: approx. 47µF, C2: approx.

1,C2

*

0.33µF). These are required for inductive input lines or
long wiring. Tantalum capacitors are recommended for

and Co, especially at low temperatures.

C

1

2

: Protection diode. Required as protection against reverse

D

*

1

biasing between input and output.

(Recommended diode: Sanken EU2Z.)

2

N.C N.C

C

2

1

5
4

3

+

DC output

C

O

V

O

8

Io vs V

■

0.5

0.4

Characteristics

DIF

Line Regulation

■

5.1

Load Regulation

■

5.1

0.3

0.2

0.1

Dropout voltage VDIF (V)

0

0 0.2 0.4 0.6 0.8

Output current IO (A)

Output Voltage Temperature Characteristics

■

5.1

VIN / IO:

30V / 0A

O (V)

5.0

Output voltage V

4.9
–50 0 50 100 150

14V / 0.5A

6V / 0.8A

Ambient temperature Ta (ºC)

5.0

IO=0A

4.9

Output voltage VO (V)

0

0

5 10152025 3530

Input voltage VIN (V)

Rise Characteristics

■

6

IO=0A

=0.5A

5

=0.8A

4

O (V)

3

2

1

Output voltage V

0

246 108

0

Input voltage V

=0.2A
=0.5A
=0.8A

5.0

O (V)

IO=0.5, 0.8A

=0.2A
=0A

4.9

Output voltage V

0

0

Circuit Current

■

0.2 0.4 0.6 0.8

VIN=
=
=

=

Output current I

250

200

150

IO=

100

50

Ground current lg (mA)

0

0

5 1015 2025 3530

IN (V) Input voltage VIN (V)

0.8A

=

0.5A
=
=

0.2A
0A

35V
25V
14V

6V

O (A)

Overcurrent Protection Characteristics

■

6

5

4

O (V)

3

2

Output voltage V

1

0

0

VIN=6V

14V

35V

25V

0.5 1.0 1.5 2.0 2.5

Output current I

O (A)

Ta—PD Characteristics

Thermal Protection Characteristics

■

6

5

VIN=6V
I

=5mA

O

■

4

O (V)

3

2

Output voltage V

1

0

120 140 160 180 200

Ambient temperature Ta (ºC)

Power Dissipation PD (W)

Note on Thermal Protection Characteristics:
The thermal protection circuit is intended for protection
against heat during instantaneous short-circuiting. Its
operation, including reliability, is not guaranteed for
short-circuiting over an extended period of time.

25

With infinite heatsink

20

200 • 200 • 2mm
(2.3ºC/W)

15

100 • 100 • 2mm
(5.2ºC/W)

With silicone grease
Heatsink: aluminum

10

75 • 75 • 2mm
(7.6ºC/W)

5

Without heatsink

0

–40 0 40 80 100

Operating temperature Ta (ºC)

9