SI-3018LSA View Datasheet(PDF) - Sanken Electric co.,ltd.

Part Name

Description

Manufacturer

SI-3018LSA

Surface-Mount, Low Current Consumption, Low Dropout Voltage

Sanken Electric co.,ltd. 

1-1-4 Linear Regulator ICs

SI-3000LSA Series Surface-Mount, Low Current Consumption, Low Dropout Voltage

■Features

• Compact surface-mount package (SOP8)

• Output current: 1 A

• Low circuit current at output OFF: Iq(OFF) ≤ 1

µA (VC = 0 V)

• Low dropout voltage: VDIF≤0.8 V (at IO = 1 A)

VDIF ≤1.2 V (IO = 1 A) for SI-3018LSA

• 4 types of output voltages (1.8 V, 2.5 V, 3.3 V,

5.0 V) available

• Output ON/OFF control terminal voltage

compatible with LS-TTL

• Built-in foldback-type-overcurrent and thermal

protection circuits

■Absolute Maximum Ratings

Parameter

DC Input Voltage

Output control terminal voltage

DC Output Current

Power Dissipation

Junction Temperature

Operating Ambient Temperature

Storage Temperature

Thermal Resistance (Junction to Lead (pin 8))

Thermal Resistance (Junction to Ambient Air)

Symbol

VIN

VC

IO

PD1*1

PD2*2

Tj*3

Top

Tstg

θj-L

θj-a*2

Ratings

16

VIN

1

1.16

1.1

–30 to +150

–30 to +150

–30 to +150

36

100

*1: When mounted on glass-epoxy board 56.5 × 56.5 mm (copper laminate area 100%).

*2: When mounted on glass-epoxy board 40 × 40 mm (copper laminate area 100%).

*3: Thermal protection circuits may be activated if the junction temperature exceeds 135°C.

(Ta=25°C)

Unit

V

V

A

W

W

°C

°C

°C

°C/W

°C/W

■Applications

• Auxiliary power supplies for PC

• Battery-driven electronic equipment

■Recommended Operating Conditions

Parameter

DC Input Voltage Range

DC Output Current Range

Operating Junction Temperature

Operating Ambient Temperature

Ratings

Symbol

SI-3018LSA

SI-3025LSA

SI-3033LSA

SI-3050LSA

Unit

VIN

3.1 to 3.5*1

*2 to 3.5*1

*2 to 5.2*1

*2 to 8.0

V

IO

0 to 1

A

Tjop

–20 to +125

°C

Taop

–30 to +85

°C

*1: VIN (max) and IO (max) are restricted by the relation PD = (VIN – VO) × IO.

Please calculate these values referring to the reference data on page 71.

*2: Refer to the Dropout Voltage parameter.

■Electrical Characteristics

Parameter

Output Voltage

Dropout Voltage

Line Regulation

Load Regulation

Temperature Coefficient of

Output Voltage

Ripple Rejection

Quiescent Circuit Current

Circuit Current at Output OFF

Overcurrent Protection

Starting Current*1,3

Control Voltage (Output ON)*2

Control Voltage (Output OFF)*2

VC

Control Current (Output ON)

Terminal

Control Current (Output OFF)

Symbol

VO

Conditions

VDIF

Conditions

Conditions

∆VLINE

Conditions

∆VOLOAD

Conditions

∆VO/∆Ta

Conditions

RREJ

Conditions

Iq

Conditions

Iq(OFF)

Conditions

IS1

Conditions

VC, IH

VC, IL

IC, IH

Conditions

IC, IL

Conditions

SI-3018LSA

min.

typ.

max.

1.764 1.800 1.836

VIN=3.3V, IO=0.5A

–

–

0.6

1.2

2

10

VIN=3.1 to 3.5V, IO=0.3A

10

20

VIN=3.3V, IO=0 to 1A

±0.3

VIN=3.3V, IO=5mA, Tj=0 to 100°C

60

VIN=3.3V, f=100 to 120HZ

1.7

2.5

VIN=3.3V, IO=0A

1

VIN=3.3V, IO=0A, VC=0V

1.2

VIN=3.3V

2.0

0.8

40

80

0

–5

Ratings

SI-3025LSA

SI-3033LSA

min.

typ.

max.

min.

typ.

max.

2.450 2.500 2.550 3.234 3.300 3.366

VIN=3.3V, IO=0.5A

VIN=5V, IO=0.5A

0.4

0.4

IO≤0.5A

IO≤0.5A

0.8

0.8

IO≤1A

2

10

3

10

VIN=3.1 to 3.5V, IO=0.3A

VIN=4.5 to 5.5V, IO=0.3A

10

20

10

20

VIN=3.3V, IO=0 to 1A

VIN=5V, IO=0 to 1A

±0.3

±0.3

VIN=3.3V, IO=5mA, Tj=0 to 100°C

VIN=5V, IO=5mA, Tj=0 to 100°C

57

55

VIN=3.3V, f=100 to 120HZ

VIN=5V, f=100 to 120HZ

1.7

2.5

1.7

2.5

VIN=3.3V, IO=0A

VIN=5V, IO=0A

1

1

VIN=3.3V, IO=0A, VC=0V

VIN=5V, IO=0A, VC=0V

1.2

1.2

VIN=3.3V

VIN=5V

2.0

2.0

0.8

0.8

40

80

40

80

VC=2V

0

–5

0

–5

VC=0V

(Ta=25°C, VC=2V, unless otherwise specified)

SI-3050LSA

Unit

min.

typ.

max.

4.90

5.00

5.10

V

VIN=6V, IO=0.5A

0.4

IO≤0.5A

V

0.8

3

15

VIN=6 to 7V, IO=0.3A

10

30

VIN=6V, IO=0 to 1A

±0.5

VIN=6V, IO=5mA, Tj=0 to 100°C

55

VIN=6V, f=100 to 120HZ

1.7

2.5

VIN=6V, IO=0A

1

VIN=6V, IO=0A, VC=0V

1.2

VIN=6V

2.0

0.8

40

80

0

–5

mV

mV

mV/ °C

dB

mA

µA

A

V

µA

µA

*1: Is1 is specified at the 5% drop point of output voltage VO on the condition that VIN = 3.3 V (5 V for SI-3033LSA), and IO = 0.5 A.

*2: Output is OFF when the output control terminal VC is open. Each input level is equivalent to LS-TTL level. Therefore, the device can be driven directly by LS-TTLs.

*3: These products cannot be used in the following applications. Because these applications require a certain current at start-up and so the built-in foldback-type overcurrent

protection may cause errors during start-up stage.

(1) Constant current load (2) Positive and negative power supply (3) Series-connected power supply (4) VO adjustment by raising ground voltage

70 ICs

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