LB1138BG-50-AF5-R datasheet(4/7 Pages) UTC

4 / 7 page

L1138B

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

4 of 7

www.unisonic.com.tw

QW-R502-323.K



ABSOLUTE MAXIMUM RATING (TA = 25°C, unless otherwise specified)

PARAMETER

SYMBOL

RATINGS

UNIT

VIN

Input Voltage

VON/OFF

VIN+0.3

Output Voltage

VOUT

VIN+0.3

Power Dissipation

Internally limited

Operating Temperature

TOPR

-40~+85

°C

Storage Temperature

TSTG

-40~+125

°C

Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute

maximum ratings are stress ratings only and functional device operation is not implied.



ELECTRICAL CHARACTERISTICS (TA= 25°C, VIN=VOUT+1V, unless otherwise specified)

Parameter

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX UNIT

Input Voltage

VIN

6.5

Output Voltage (Note 1)

VOUT(E)

VIN =VOUT(S)+1.0V, IOUT =100mA

-1%

+1%

Line Regulation

OUT

OUT1

∆V

VOUT(S) + 0.5V ≤VIN ≤6.5V,

IOUT = 100mA

0.05

0.3

%/V

Load Regulation

∆VOUT2

VIN = VOUT(S) + 1.0 V,

1.0mA ≤IOUT ≤300mA

100

Output Current (Note 2)

IOUT

VIN ≤VOUT(S)+1.0 V

800

Operation

ISS1

VIN = VOUT(S) +1.0 V,

ON/OFF pin = ON, no load

160

µA

Current

Consumption

During

Shutdown

ISS2

VIN = VOUT(S) + 1.0 V,

ON/OFF pin = OFF, no load

0.1

1.0

µA

Short-Circuit Current

ISHORT

VIN = VOUT(S) + 1.0 V,

ON/OFF pin = ON, VOUT = 0 V

350

VOUT(S) =1.2V

0.8

1.0

VOUT(S) =2.5V

0.15

0.22

VOUT(S) =2.8V

0.15

0.22

Dropout Voltage (Note 3)

IOUT = 300mA

3.3V ≤ VOUT(S) ≤ 5.5V

0.12

0.18

Temperature Coefficient of

Output Voltage

TCVO

VIN = VOUT(S) +1.0V,

IOUT = 10mA, -40°C≤ TA ≤85°C

±150

ppm/°C

1.2V ≤VOUT(S)≤ 3.0V

Power Supply Rejection

PSRR

VIN= VOUT(S)+1.0 V

f = 1.0kHz,

IOUT = 100 mA

∆Vrip = 0.5Vrms

3.1V ≤VOUT(S)≤ 5.5V

High

VSH

VIN = VOUT(S) +1.0V

1.5

Shutdown Pin

Input Voltage

Low

VSL

VIN = VOUT(S) + 1.0V

0.3

High

ISH

VIN = 6.5V, VON/OFF = 6.5V

-0.1

0.1

µA

Shutdown Pin

Input Current

Low

ISL

VIN = 6.5V, VON/OFF = 0V

-0.1

0.1

µA

Detection

TSD

Junction temperature

150

°C

Thermal

Shutdown

Temperature

Release

TSR

Junction temperature

120

°C

Notes: 1. VOUT(S): Specified output voltage.

VOUT(E): Actual output voltage at the fixed load

2. When fixing( IOUT= 100mA) and inputting VOUT(S) + 1.0 V

3. This output current means the one at which the output voltage becomes 98% of VOUT(E) after gradually

increasing the output current.

4. The dropant voltage is detmed as VIN - VOUT, which is measured when VOUT is VOUT(normal) × 98%

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