LP2951 Datasheet, PDF (5/16 Pages) Semtech Corporation – 150mA ADJUSTABLE VOLTAGE REGULATOR

MJLP2951-X REV 1B1
MICROCIRCUIT DATA SHEET
Electrical Characteristics
DC PARAMETERS(Continued)
(The following conditions apply to all the following parameters, unless otherwise specified.)
DC: Vout = 5V (Nominal), Cload = 3.3uF, Vsd = 0.6V, Vin = 6V, Il = -100uA
SYMBOL
Igsc
PARAMETER
CONDITIONS
Ground Current At Vout = 0V, Vin = 6V
Current Limit
Vref
Reference Voltage
Vrline
Vrload
Ifb
Ioh
Vol
Isd
Reference Voltage 2.3V < Vin < 30V
Line Regulation
2.3V < Vin < 30V
Reference Voltage 1.2V < Vout < 29V, Vin = 30V
Output Regulation
1.2V < Vout < 29V, Vin = 30V
Feedback Pin Bias
Current
Error Comparator
Output Leakage
Current
Error Comparator
Output Low
Voltage
Shutdown Pin
Input Current
Vo = 30V
Vin = 4.5V, Vsd = 2V
Vsd = 2.4V
Vsd = 30V
Vsdl
Vsdh
Ilkg
Shutdown Input
Logic Voltage
Shutdown Input
Logic Voltage
Regular Output
Bias Current In
Shutdown
(LOW)
(HIGH)
Vsd = 2V, Vin = 30V, Il = 0mA
NOTES
PIN-
NAME
MIN
1.22
1.20
-1.9
-10
-1.2
-5
1
1
2
-10
-20
MAX
20
UNIT
mA
SUB-
GROUPS
1
25
mA 2, 3
1.25 V
1
1.26 V
2, 3
1.9
mV 1
10
mV 2, 3
1.2
mV 1
5
mV 2, 3
40
nA 1
60
nA 2, 3
1
uA 1
2
uA 2, 3
250
mV 1
400
mV 2, 3
50
uA 1
100
uA 2, 3
600
uA 1
750
uA 2, 3
0.6
V
1, 2,
3
V
1, 2,
3
10
uA 1
20
uA 2, 3
AC PARAMETERS
(The following conditions apply to all the following parameters, unless otherwise specified.)
AC: Vin = 6V, Cload = 3.3uF, Vsd = 0.6V
Rr
Ripple Rejection f = 120Hz, Vin = 0.1Vrms
50
Vnoise
Output Noise
C1 = 1uF
600
C1 = 3.3uF
250
dB 4
uVrms 7
uVrms 7
5