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SPX2941T5 Datasheet(PDF) 3 Page - Sipex Corporation

Part # SPX2941T5
Description  1A Low Dropout Voltage Regulators
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Manufacturer  SIPEX [Sipex Corporation]
Direct Link  http://www.sipex.com
Logo SIPEX - Sipex Corporation

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Date: 08/25/04
SPX2941 1A Low Dropout Voltage Regulator
© Copyright 2004 Sipex Corporation
NOTE 1: Dropout voltage is defined as the input to output differential at which the output voltage drops to 99%
of its nominal value.
NOTE 2: V
IN=VOUT(NOMINAL)+1V; for example, VIN=4.3V for a 3.3V regulator. Employ pulse-testing procedures to
minimize temperature rise.
NOTE 3: Ground pin current is the regulator quiescent current. The total current drawn from the source is the
sum of the load and ground currents.
NOTE 4: Thermal regulation is defined as the change in the output voltage at a time T after a change in power
dissipation is applied, excluding load or line regulation effects.
NOTE 5: Comparator threshold is expressed in terms of a voltage differential at the Adjust terminal below the
nominal reference voltage measured 6V input. To express these thresholds in terms of output
voltage change, multiply the error amplifier gain = V
OUT/VREF = (R1 + R2)/R2.
For example, at a
programmable output voltage of 5V, the Error output is guaranteed to go low when the output drops
by 95mVx 5V/ 1.240V = 38mV. Threshold remain constant as a percent of V
OUT as VOUT is varied,
with the dropout warning occurring at typically 5% below nominal, 7.7% guaranteed.
NOTE 6: V
EN ≤ 0.8V and VIN ≤ 16V, VOUT = 0.
NOTE7: Maximum positive supply voltage of 20V must be of limited duration ( <100ms) and duty cycle (<1%).
The maximum continuous supply voltage is 16V.
NOTE 8: V
REF ≤ VOUT ≤ (VIN-1), 2.5V ≤ VIN ≤ 16V, 10 mA ≤ IC ≤ IFL, TJ < TJMAX.
Reference
Thermal
Shutdown
EN
IN
OUT
ADJ
GND
O.V
I
LIMIT
28V
R1*
R2*
1.180V
1.240V +
+
--
FLAG
Figure 2. SP2941 Block Diagram
BLOCK DIAGRAM


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