PJ2950/PJ2951
150mA Low Dropout Voltage Regulators
3-7
2002/01.rev.A
PARAMETER
CONDITIONS
(Note 2)
PJ2950A/PJ2951A
Min.
T yp.
Max
PJ2950/PJ2951
Min.
Typ.
Max
UNITS
Error Comparato r
Output Leakage
Current
Voh=30V
0.01
1
1
μA
Output Low
Voltage
Vin = 4.5V
Iol = 400μA
150
250
150
250
mV
Upper Threshold
Voltage
(Note 8)
40
60
40
60
mV
Power Threshold
Voltage
(Note 8)
75
95
75
95
mV
Hysteresis
(Note 8)
15
15
mV
Shutdown Input
Output Logic
Voltage
Low (Regulator ON)
High(Regulator
OFF)
2
1.3
0.7
2
1.3
0.7
V
Shut down Pin
Input Current
Vs =2.4V
Vs = 30V
30
450
50
600
30
450
50
600
μA
Regulator Output
Current in
Shutdown
(Note 9)
3
10
3
10
μA
Note 1: Output or reference voltage temperature co effi cients
defined as the worst case voltage ch ange divided by the total
temperature range.
Note 2: Unless otherwise specified all limits guaranteed fo r
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=100μA and Tj=125℃, line regulation is
guaranteed by design to 0.2%. See typical
perfo rmance
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 b elow
its nominal value measured at 1V differential at very low
value o f 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, TJ ≤TJMAX..
Note 7: Output or reference voltage temperature coeffi cient
is defined as the worst case voltage ch ange divided by the
total temperature range.
Note 8: Comparator thresholds are exp ressed in terms o f 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.
APPLICATION HINTS EXTERNAL CAPACITORS
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