NCV47701
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4
RECOMMENDED OPERATING RANGES (Note 6)
Rating
Symbol Min Max Unit
Input Voltage (Note 7) V
in
5.5 40 V
Output Current Limit (Note 8) I
LIM
10 350 mA
Junction Temperature T
J
−40 150 °C
Nominal Output Voltage V
out_nom
5.0 20 V
Current Sense Output (CSO) Capacitor C
CSO
1.0 4.7
mF
6. Refer to ELECTRICAL CHARACTERISTIS and APPLICATION INFORMATION for Safe Operating Area.
7. Minimum V
in
= 5.5 V or (V
out_nom
+ 0.5 V), whichever is higher.
8. Corresponding R
CSO
is in range from 25 kW down to 728 W.
ELECTRICAL CHARACTERISTICS V
in
= 13.5 V, V
EN
= 5 V, R
CSO
= 0 W, C
CSO
= 1 mF, C
in
= 1 mF, C
out
= 22 mF, ESR = 1.5 W, Min
and Max values are valid for temperature range −40°C ≤ T
J
≤ 150°C unless otherwise noted and are guaranteed by test design or
statistical correlation. Typical values are referenced to T
J
= 25°C.
Parameter
Test Conditions Symbol Min Typ Max Unit
REGULATOR OUTPUT
Output Voltage (Accuracy %)
V
in
= (V
out_nom
+ 1 V) to 40 V, I
out
= 5 mA to 350 mA V
out
−3 − 3 %
Line Regulation V
in
= (V
out_nom
+ 1 V) to (V
out_nom
+ 20V), I
out
= 5mA Reg
line
− 0.1 1.0 %
Load Regulation I
out
= 5 mA to 350 mA Reg
load
− 0.14 1.4 %
Dropout Voltage (Note 9) I
out
= 150 mA, V
DO
= V
in
− V
out
V
DO
− 250 500 mV
DISABLE AND QUIESCENT CURRENTS
Disable Current
V
EN
= 0 V
V
EN
= 0 V, T
J
= 25°C
I
DIS
−
−
−
85
10
−
mA
nA
Quiescent Current, I
q
= I
in
− I
out
I
out
= 1 mA, V
in
= (V
out_nom
+ 8.5 V) I
q
− 150 230
mA
Quiescent Current, I
q
= I
in
− I
out
I
out
= 350 mA, V
in
= (V
out_nom
+ 8.5 V) I
q
− 23 50 mA
CURRENT LIMIT PROTECTION
Current Limit
V
out
= 0.9 x V
out_nom
, V
in
= (V
out_nom
+ 8.5 V) I
LIM
400 − − mA
PSRR & NOISE
Power Supply Ripple Rejection
f = 100 Hz, 0.5 V
p−p
, I
out
= 5 mA, C
in
= none
PSRR − 70 − dB
Output Noise Voltage
f = 10 Hz to 100 kHz, C
b
= 10 nF, I
out
= 5 mA
V
n
− 100 −
mV
rms
ENABLE
Enable Input Threshold Voltage
Logic Low (OFF)
Logic High (ON)
V
out
v
0.1 V
V
out
w
0.9 x V
out_nom
V
th(EN)
0.8
−
2.4
2.7
−
3.5
V
Enable Input Current V
EN
= 5 V I
EN
2.0 8.0 20
mA
Turn On Time from Enable ON to
90% of V
out_nom
I
out
= 100 mA, C
b
= 10 nF, R
1
= 82 kW,
R
2
= 27 kW
t
on
− 1.6 − ms
OUTPUT CURRENT SENSE
CSO Voltage Level at Current
Limit
V
out
= 0.9 x V
out_nom
, (V
out_nom
= 5 V)
R
CSO
= 1 kW
V
CSO_Ilim
2.346
(−8 %)
2.55 2.754
(+8 %)
V
CSO Transient Voltage Level
C
CSO
= 4.7 mF, R
CSO
= 1 kW, I
out
pulse from 10 mA
to 350 mA, t
r
= 1 ms
V
CSO
− − 3.0 V
CSO Current to Output Current
Ratio (Note 10)
V
CSO
= 2 V, I
out
= 10 mA to 350 mA,
(V
out_nom
= 5V)
I
CSO
/I
out
−
(−10%)
(1/100) −
(+10%)
−
CSO Current at No Load Current
V
CSO
= 0 V, I
out
= 0 mA, (V
out_nom
= 5 V)
I
CSO_off
− − 10
mA
THERMAL SHUTDOWN
Thermal Shutdown Temperature
I
out
= 5 mA T
SD
150 − 195 °C
9. Measured when the output voltage V
out
has dropped −2% from the nominal value obtained at V
in
= V
out_nom
+ 8.5 V.
10.Not guaranteed in dropout.
