PJ2950ACT-3.3 View Datasheet(PDF) - Promax Johnton
Part Name
Description
Manufacturer
PJ2950ACT-3.3 Datasheet PDF : 7 Pages
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PJ2950/PJ2951
150mA Low Dropout Voltage Regulators
APPLICATION HINTS EXTERNAL CAPACITORS
PARAMETER
CONDITIONS
(Note 2)
Error Comparator
Output Leakage
Current
Output Low
Voltage
Upper Threshold
Voltage
Power Threshold
Voltage
Hysteresis
Voh=30V
Vin = 4.5V
Iol = 400μA
(Note 8)
(Note 8)
(Note 8)
Shutdown Input
Output Logic
Voltage
Shut down Pin
Input Current
Regulator Output
Current in
Shutdown
Low (Regulator ON)
High(Regulator
OFF)
Vs =2.4V
Vs = 30V
(Note 9)
PJ2950A/PJ2951A
Min. T yp. Max
0.01
1
150
250
40
60
75
95
15
1.3
0.7
2
30
50
450
600
3
10
PJ2950/PJ2951
Min. Typ. Max
UNITS
1
μA
150
250
mV
40
60
mV
75
95
mV
15
mV
1.3
0.7
V
2
30
50
μA
450
600
3
10
μA
Note 1: Output or reference voltage temperature coeffi cients
defined as the worst case voltage change divided by the total
temperature range.
Note 2: Unless otherwise specified all limits guaranteed for
Tj=25℃, Vin =6V,IL=100μA and CL=100μF. Additional
conditions for the 8-pin versions are feedback tied to 5V &
3.3V tap output Sense (Vout =5V & 3.3V) and Vshutdown ≤
0.8V.
Note 3:Regulation is measured at constant junction
temperature , using pulse testing with a low duty cycle.
Changes in output voltage due to heating effects are
convered under the speci fication for therm al regulation.
Note 4:Line regulation for the PJ2951 is tested at 150℃ for
IL=1mA.For IL=100μ A and Tj=125 ℃ , line regulation is
guaranteed by design to 0.2%. See typical performance
characteristics for line regulation versus temperature and
load current .
Note 5:Dropout Voltage is defined as the input to output
differential at which the output voltage drops 100mV below
its nominal value measured at 1V differential at very low
value of programmed output voltage , the minimum input
supply voltage of 2V (2.3V over temperature) must be
taken in to account .
Note 6: Vref ≤ Vout ≤ (Vin-1V),2.3≤ Vin≤ 30V, 100μA≤ IL ≤
100mA, T J ≤ T JMAX..
Note 7: Output or reference voltage temperature coeffi cient
is defined as the worst case voltage change divided by the
total temperature range.
Note 8: Comparator thresholds are expressed in terms of a
voltage differential at the feedback 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 95 mV X
5V/1.250=384mV. Thresholds remain constant as a percent
of Vout as Vout is varied. with the dropout warning
occurring at typically 5% below nominal, 7.5% guaranteed.
Note 9:Vshutdown≡2V, Vin ≤ 30V,Vout =0, Feedback pin tied
to 5V & 3.3VTap.
3-7
2002/01.rev.A
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