SE1122 datasheet(2/5 Pages) SEAWARD

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Revision 1/21/2014

Preliminary and all contents are subject to change without prior notice.

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Absolute Maximum Rating

Symbol

Parameter

Maximum

Units

VIN

Input Supply Voltage

θJA

Thermal Resistance Junction to Ambient (SOT-223)

140

°C/W

Operating Junction Temperature Range

0 to 125

°C

TSTG

Storage Temperature Range

-40 to 150

°C

TLEAD

Lead Temperature (Soldering 10 Sec)

260

°C

Note 1: hermal Resistance Junction to Ambient (TO252) is 105 °C/W

Electrical Characteristic

VIN =2.8V, IOUT = 10mA, CIN = 0.1µF, COUT = 0.1µF, TA = 25°C, unless otherwise specified.

Symbol

Parameter

Test Condition

Min

Typ

Max

Units

Output Voltage

(1)

1.176

1.2

1.224

VSR

Line Regulation

(1)

2.8V < VIN < 12V

0.3

%/V

VLR

Load Regulation

(1)

10mA ≤ I

OUT ≤ 1A

0.0005

%/mA

Quiescent Current

Dropout Voltage

(2)

IOUT = 1A

1.3

ICL

Current Limit

1.1

Temperature Coefficient

0.02

%/°C

OTP

Thermal Protection

175

°C

RMS Output Noise

TA = 25°C, 10Hz ≤ f ≤ 10kHz

0.003

%VO

Ripple Rejection Ratio

f = 120Hz,

COUT = 22μF (Tantalum),

(VIN - VOUT) = 3V, IOUT = 10mA

Notes:

Low duty cycle pulse testing with which TJ remains unchanged.

The dropout voltage is the input/output differential at which the circuit ceases to regulate against further

reduction in input voltage. It is measured when the output voltage has dropped 2% from the nominal value

obtained at VIN = VOUT +Vdropout.

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