TS4274CZ datasheet(2/10 Pages) TSC

2 / 10 page

TS4274

400mA Ultra Low Dropout Fixed Voltage Regulator

2/10

Version: A07

Electrical Characteristics ( VIN=VOUT+1V, IL=5mA, CO=10uF, TA=25oC, unless otherwise noted)

Parameter

Conditions

Min

Typ

Max

Unit

2.40

2.5

2.60

3.17

3.3

3.43

Output Voltage

5mA ≤ IL ≤ 500mA,

Vo+1V ≤ VIN ≤ 26V

4.80

5.0

5.20

Input Supply Voltage

Output Voltage Temperature Coefficient

150

ppm/

Line Regulation

Vo+1V ≤ VIN ≤ 26V

0.05

0.5

Load Regulation

5mA ≤ IL ≤ 400mA

0.2

2.0

Dropout Voltage (Note 4)

IL=100mA

IL=250mA

IL=400mA

100

300

500

200

400

600

Quiescent Current (Note 5)

IL=100uA

IL=250mA

IL=400mA

200

300

Short Circuit Current (Note 6)

VOUT=0

600

900

Output Noise,

10Hz to 100KHz, IL=10mA

CL=2.2uF

CL=3.3uF

CL=33uF

500

350

120

uVrms

Power Supply Ripple Rejection

F=100Hz, Vr=0.5Vss

Thermal Performance

Condition

Package type

Typ

Unit

TO-220

TO-263

TO-252

150

Thermal Resistance

Junction to Ambient

SOT-223

170

oC/W

Note 1: Absolute Maximum Rating is limits beyond which damage to the device may occur. For guaranteed

specifications and test conditions see the electrical characteristics.

Note 2: Maximum positive supply voltage of 35V must be limited duration (<100mS) and duty cycle (<1%).

Note 3: The maximum allowable power dissipation is a function of the maximum junction temperature, TJ, the junction

to ambient thermal resistance, θJA, and the ambient temperature, Ta. Exceeding the maximum allowable

power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. The

effective value of θJA can be reduced by using a heatsink.

Note 3: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its

nominal value measured at 1V differential.

Note 4: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the

ground pin current and output load current.

Note 5: Output current will decrease with increasing temperature, but it will be not dropped below 400mA at the

maximum specified temperature.

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