S-1155 datasheet(8/28 Pages) SII

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HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR

S-1155 Series

Rev.1.1_00

Seiko Instruments Inc.

Table 5 (2 / 2)

(Ta

= 25°C unless otherwise specified)

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

Test

Circuit

VIN = VOUT(S) + 1.0 V,

RL = 1.0 k

Ω,

determined by VOUT

output level

1.0 V

≤ VOUT(S) ≤ 4.5 V

1.0

−

Shutdown pin input

voltage “H”

VSH

VIN = 5.5 V,

RL = 1.0 k

Ω,

determined by VOUT

output level

4.5 V < VOUT(S)

≤ 5.0 V

1.0

−

VIN = VOUT(S) + 1.0 V,

RL = 1.0 k

Ω,

determined by VOUT

output level

1.0 V

≤ VOUT(S) ≤ 4.5 V

−

0.3

Shutdown pin input

voltage “L”

VSL

VIN = 5.5 V,

RL = 1.0 k

Ω,

determined by VOUT

output level

4.5 V < VOUT(S)

≤ 5.0 V

−

0.3

Shutdown pin input

current “H”

ISH

VIN = 5.5 V, VON/OFF = 5.5 V

−0.1

−

0.1

µA

Shutdown pin input

current “L”

ISL

VIN = 5.5 V, VON/OFF = 0 V

−0.1

−

0.1

µA

1.0 V

≤ VOUT(S) < 1.2 V

−

1.2 V

≤ VOUT(S) ≤ 3.0 V

−

VIN = VOUT(S) + 1.0 V,

f = 1 kHz,

∆Vrip = 0.5 Vrms,

IOUT = 100 mA

3.0 V < VOUT(S)

≤ 4.5 V

−

Ripple rejection

VIN = 5.5 V,

f = 1 kHz,

∆Vrip = 0.5 Vrms,

IOUT = 100 mA

4.5 V < VOUT(S)

≤ 5.0 V

−

VIN

= VOUT(S) + 1.0 V,

ON/OFF pin

= ON,

VOUT

= 0 V

1.0 V

≤ VOUT(S) ≤ 4.5 V

−

200

−

Short-circuit current

ISHORT

VIN

= 5.5 V,

ON/OFF pin

= ON,

VOUT

= 0 V

4.5 V < VOUT(S)

≤ 5.0 V

−

200

−

Thermal shutdown

detection temperature

TSD

Junction temperature

−

150

−

°C

−

Thermal shutdown

release temperature

TSR

Junction temperature

−

120

−

°C

−

*1.

VOUT(S) : Specified output voltage

VOUT(E) : Actual output voltage

The output voltage when fixing IOUT (

= 100 mA) and inputting VOUT(S) + 1.0 V or 5.5 V

*2.

The output current at which the output voltage becomes 95% of VOUT(E) after gradually increasing the output current.

*3.

Vdrop

= VIN1 − (VOUT3 × 0.98)

VOUT3 is the output voltage when VIN

= VOUT(S) + 1.0 V or 5.5 V, and IOUT = 200 mA.

VIN1 is the input voltage at which the output voltage becomes 98% of VOUT3 after gradually decreasing the input voltage.

*4.

The change in temperature [mV/°C] is calculated using the following equation.

[]

[ ]

[] 1000

ppm/

∆Ta

∆V

mV/

∆Ta

∆V

OUT

OUT(S)

OUT

•

*1.

Change in temperature of the output voltage

*2.

Specified output voltage

*3.

Output voltage temperature coefficient

*5.

The output current can be at least this value.

Due to limitation of the package power dissipation, this value may not be satisfied. Attention should be paid to the

power dissipation of the package when the output current is large.

This specification is guaranteed by design.

S-1155 Datasheet(PDF) 8 Page - Seiko Instruments Inc

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