S1155 datasheet(8/28 Pages) SII

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

S-1155 Series

Rev.2.1_01

Seiko Instruments Inc.

Table 5 (2 / 2)

(Ta

= 25°C unless otherwise specified)

Item

Symbol

Condition

Min.

Typ.

Max.

Unit

Test

Circuit

ON/OFF pin input

voltage “H”

VSH

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

−

VIN = 5.5 V,

RL = 1.0 k

Ω,

determined by VOUT

output level

4.5 V < VOUT(S)

≤ 5.0 V

1.0

−

ON/OFF pin input

voltage “L”

VSL

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

VIN = 5.5 V,

RL = 1.0 k

Ω,

determined by VOUT

output level

4.5 V < VOUT(S)

≤ 5.0 V

−

0.3

ON/OFF pin input

current “H”

ISH

VIN = 5.5 V, VON/OFF = 5.5 V

−0.1

−

0.1

μA

ON/OFF pin input

current “L”

ISL

VIN = 5.5 V, VON/OFF = 0 V

−0.1

−

0.1

μA

Ripple rejection

VIN = VOUT(S) + 1.0 V,

f = 1 kHz,

ΔVrip = 0.5 Vrms,

IOUT = 100 mA

1.0 V

≤ VOUT(S) < 1.2 V

−

1.2 V

≤ VOUT(S) ≤ 3.0 V

−

3.0 V < VOUT(S)

≤ 4.5 V

−

VIN = 5.5 V,

f = 1 kHz,

ΔVrip = 0.5 Vrms,

IOUT = 100 mA

4.5 V < VOUT(S)

≤ 5.0 V

−

Short-circuit current

ISHORT

VIN

= VOUT(S) + 1.0 V,

ON/OFF pin

= ON,

VOUT

= 0 V

1.0 V

≤ VOUT(S) ≤ 4.5 V

−

200

−

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) : Set output voltage

VOUT(E) : Actual output voltage

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.

A change in the temperature of the output voltage [mV/°C] is calculated using the following equation.

ΔVOUT

ΔTa

[]

mV/°C

*1 = VOUT(S) []

*2 ×

ΔVOUT

ΔTa•VOUT []

ppm/°C

*3 ÷ 1000

*1.

Change in temperature of output voltage

*2.

Set output voltage

*3.

Output voltage temperature coefficient

*5.

The output current can be at least this value.

Due to restrictions on 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.

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