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TS29100 Datasheet(PDF) 3 Page - Taiwan Semiconductor Company, Ltd

Part No. TS29100
Description  1.0A Ultra Low Dropout Positive Voltage Regulator
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Maker  TSC [Taiwan Semiconductor Company, Ltd]
Homepage  http://www.taiwansemi.com
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 3 page
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TS29100/1/2
3-3
2003/12 rev. A
Thermal Performance
Condition
Package type
Typ
Unit
SOT-223
15
Thermal Resistance
Junction to Ambient
SOP-8
20
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 60V 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 4: 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 5: 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 6: Output current will decrease with increasing temperature, but it will be not dropped below 1.0A at the maximum
specified temperature.
Note 7: Thermal regulation is defined as the change in output voltage at a time T after a change in power dissipation is
applied, excluding load or line regulation effects. Specification are for a 200mA load pulse at Vin=20V (a 4W
pulse) for T=10mS
Note 8: Comparator thresholds are expressed in terms of a voltage differential at the adjust terminal below the nominal
reference voltage measured at 6V input. To express these thresholds in terms of output voltage change,
multiply by the error amplifier gain = Vout / Vref = (R1+R2) / R2. For example, at a programmed output voltage
of 5V, the error output is guaranteed to go low when the output drops by 95mV x 5V / 1.24V = 384mV.
Thresholds remain constant as a percent of Vout as Vout is varied, with the dropout warning occurring at
typically 5% below nominal, 7.7% guaranteed.




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