NCV47701
5 V to 20 V Adjustable Low
Dropout Regulator with
Adjustable Current Limit
The NCV47701 is a 350 mA output current integrated low dropout
regulator designed for use in harsh automotive environments. It
includes wide operating temperature and input voltage ranges. The
device is offered with adjustable voltage versions available in 3%
output voltage accuracy. It has a high peak input voltage tolerance and
reverse input voltage protection. It also provides overcurrent
protection, overtemperature protection and enable for control of the
state of the output voltage. The integrated current sense feature
provides diagnosis and system protection functionality. The current
limit of the device is adjustable by resistor connected to CSO pin.
Voltage on CSO pin is proportional to output current.
Features
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MARKING
DIAGRAMS
8
8
1
SOIC−8
Exposed Pad
PD SUFFIX
CASE 751AC
1
8
8
1
SOIC−8
D SUFFIX
CASE 751
1
A
L
Y
W
G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
47701
ALYW
G
47701
ALYW
G
•
Adjustable Voltage Version (from 5 V to 20 V)
±
3% Output Voltage
•
•
•
for
±6%
Output Voltage Accuracy see NCV47700 Specification
Enable Input (5 V Logic Compatible Thresholds)
for 3.3 V Logic Compatible Thresholds see NCV47710 or
NCV47711 Specification
Adjustable Current Limit (from 10 mA to 350 mA) with 10%
accuracy
Protection Features:
♦
Current Limitation
♦
Thermal Shutdown
♦
Reverse Input Voltage
This is a Pb−Free Device
PIN CONNECTIONS
ADJ
GND
EN
CSO
1
8
V
out
NC
NC
V
in
•
•
•
•
•
Typical Applications
Audio and Infotainment System
Instrument Cluster
Navigation
Satellite Radio
V out
Cb*
NCV47701
ADJ
C out
R2
EN
GND
CSO
22
mF
R1
SOIC−8 EP, SOIC−8
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
C in
1
mF
V in
C CSO
1
mF
R CSO
*Required if usage of low ESR output capacitor C
out
is demand, see
Regulator Stability Considerations section.
Figure 1. Application Schematic
©
Semiconductor Components Industries, LLC, 2012
1
July, 2017 − Rev. 3
Publication Order Number:
NCV47701/D
NCV47701
V
in
VOLTAGE
REFERENCE
V
REF1
V
REF2
V
out
PASS DEVICE
AND
CURRENT MIRROR
I
CSO
= I
out
/ 100
EN
ENABLE
SATURATION
PROTECTION
THERMAL
SHUTDOWN
SP
TSD
+
-
V
REF2
2.55 V
CSO
GND
SP
+
-
V
REF1
1.275 V
ADJ
TSD
Figure 2. Simplified Block Diagram
PIN FUNCTION DESCRIPTION
Pin No.
SOIC−8 EP
1
2
3
4
5
6
7
8
EPAD
Pin No.
SOIC−8
1
2
3
4
5
6
7
8
−
Pin Name
ADJ
GND
EN
CSO
V
in
NC
NC
V
out
EPAD
Description
Adjustable Voltage Setting Input. See Application Section for more details.
Power Supply Ground.
Enable Input; low level disables the IC.
Current Sense Output, Current Limit setting and Output Current value information.
See Application Section for more details.
Positive Power Supply Input.
Not Connected
Not Connected
Regulated Output Voltage.
Connect to ground potential or leave unconnected.
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2
NCV47701
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Rating
Input Voltage
Enable Input Voltage
Adjustable Input Voltage
CSO Voltage
Output Voltage
Junction Temperature
Storage Temperature
Symbol
V
in
V
EN
V
ADJ
V
CSO
V
out
T
J
T
STG
Min
−42
−42
−0.3
−0.3
−1
−40
−55
Max
45
45
10
7
40
150
150
Unit
V
V
V
V
V
°C
°C
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. Refer to ELECTRICAL CHARACTERISTICS and APPLICATION INFORMATION for Safe Operating Area.
ESD CAPABILITY
(Note 2)
Rating
ESD Capability, Human Body Model
ESD Capability, Machine Model
Symbol
ESD
HBM
ESD
MM
Min
−2
−200
Max
2
200
Unit
kV
V
2. This device series incorporates ESD protection and is tested by the following methods:
ESD Human Body Model tested per AEC−Q100−002 (JS−001−2010)
ESD Machine Model tested per AEC−Q100−003 (EIA/JESD22−A115)
Field Induced Charge Device Model ESD characterization is not performed on plastic molded packages with body sizes < 50mm
2
due to
the inability of a small package body to acquire and retain enough charge to meet the minimum CDM discharge current waveform
characteristic defined in JEDEC JS−002−2014.
LEAD SOLDERING TEMPERATURE AND MSL
(Note 3)
Rating
Moisture Sensitivity Level
SOIC−8 EP
SOIC−8
Symbol
MSL
Min
2
1
Max
Unit
−
3. For more information, please refer to our Soldering and Mounting Techniques Reference Manual, SOLDERRM/D
THERMAL CHARACTERISTICS
Rating
Thermal Characteristics, SOIC−8 EP (single layer PCB)
Thermal Resistance, Junction−to−Air (Note 4)
Thermal Reference, Junction−to−Lead (Note 4)
Thermal Characteristics, SOIC−8 EP (4 layers PCB)
Thermal Resistance, Junction−to−Air (Note 4)
Thermal Reference, Junction−to−Lead (Note 4)
Thermal Characteristics, SOIC−8 (single layer PCB)
Thermal Resistance, Junction−to−Air (Note 4)
Thermal Reference, Junction−to−Lead (Note 4)
Thermal Characteristics, SOIC−8 (4 layers PCB)
Thermal Resistance, Junction−to−Air (Note 4)
Thermal Reference, Junction−to−Lead (Note 4)
Symbol
R
θJA
R
ψJL
R
θJA
R
ψJL
R
θJA
R
ψJL
R
θJA
R
ψJL
Value
70
19
°C/W
29
12
°C/W
121
42
°C/W
77
52
Unit
°C/W
4. Values based on copper area of 645 mm
2
(or 1 in
2
) of 1 oz copper thickness and FR4 PCB substrate. Single layer − according to JEDEC51.3,
4 layers − according to JEDEC51.7.
RECOMMENDED OPERATING RANGES
Rating
Input Voltage (Note 5)
Output Current Limit (Note 6)
Junction Temperature
Nominal Output Voltage
Current Sense Output (CSO) Capacitor
Symbol
V
in
I
LIM
T
J
V
out_nom
C
CSO
Min
5.5
10
−40
5.0
1.0
Max
40
350
150
20
4.7
Unit
V
mA
°C
V
mF
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
5. Minimum V
in
= 5.5 V or (V
out_nom
+ 0.5 V), whichever is higher.
6. Corresponding R
CSO
is in range from 25 kW
down
to 728
W.
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3
NCV47701
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
REGULATOR OUTPUT
Output Voltage (Accuracy %)
Line Regulation
Load Regulation
Dropout Voltage (Note 7)
V
in
= (V
out_nom
+ 1 V) to 40 V, I
out
= 5 mA to 350 mA
V
in
= (V
out_nom
+ 1 V) to (V
out_nom
+ 20V), I
out
= 5mA
I
out
= 5 mA to 350 mA
I
out
= 150 mA, V
DO
= V
in
− V
out
V
out
Reg
line
Reg
load
V
DO
−3
−
−
−
−
0.1
0.14
250
3
1.0
1.4
500
%
%
%
mV
Test Conditions
Symbol
Min
Typ
Max
Unit
DISABLE AND QUIESCENT CURRENTS
Disable Current
Quiescent Current, I
q
= I
in
− I
out
Quiescent Current, I
q
= I
in
− I
out
CURRENT LIMIT PROTECTION
Current Limit
PSRR & NOISE
Power Supply Ripple Rejection
Output Noise Voltage
ENABLE
Enable Input Threshold Voltage
Logic Low (OFF)
Logic High (ON)
Enable Input Current
Turn On Time from Enable ON to
90% of V
out_nom
OUTPUT CURRENT SENSE
CSO Voltage Level at Current
Limit
CSO Transient Voltage Level
CSO Current to Output Current
Ratio (Note 8)
CSO Current at No Load Current
REVERSE CURRENT
Reverse Current (Note 9)
THERMAL SHUTDOWN
Thermal Shutdown Temperature
I
out
= 5 mA
T
SD
150
−
195
°C
V
in
= 12 V, V
out
= 14 V
I
out_rev
−40
−25
−
mA
V
out
= 0.9 x V
out_nom
, (V
out_nom
= 5 V)
R
CSO
= 1 kW
C
CSO
= 4.7
mF,
R
CSO
= 1 kW, I
out
pulse from 10 mA
to 350 mA, t
r
= 1
ms
V
CSO
= 2 V, I
out
= 10 mA to 350 mA,
(V
out_nom
= 5V)
V
CSO
= 0 V, I
out
= 0 mA, (V
out_nom
= 5 V)
V
CSO_Ilim
V
CSO
I
CSO
/I
out
I
CSO_off
2.346
(−8 %)
−
−
(−10%)
−
2.55
−
(1/100)
−
2.754
(+8 %)
3.0
−
(+10%)
10
V
V
−
mA
V
out
v
0.1 V
V
out
w
0.9 x V
out_nom
V
EN
= 5 V
I
out
= 100 mA, C
b
= 10 nF, R
1
= 82 kW,
R
2
= 27 kW
V
th(EN)
0.8
−
I
EN
t
on
2.0
−
2.4
2.7
8.0
1.6
−
3.5
20
−
mA
ms
V
f = 100 Hz, 0.5 V
p−p
, I
out
= 5 mA, C
in
= none
f = 10 Hz to 100 kHz, C
b
= 10 nF, I
out
= 5 mA
PSRR
V
n
−
−
70
100
−
−
dB
mV
rms
V
out
= 0.9 x V
out_nom
, V
in
= (V
out_nom
+ 8.5 V)
I
LIM
400
−
−
mA
V
EN
= 0 V
V
EN
= 0 V, T
J
= 25°C
I
out
= 1 mA, V
in
= (V
out_nom
+ 8.5 V)
I
out
= 350 mA, V
in
= (V
out_nom
+ 8.5 V)
I
DIS
I
q
I
q
−
−
−
−
−
85
150
23
10
−
230
50
mA
nA
mA
mA
7. Measured when the output voltage V
out
has dropped −2% from the nominal value obtained at V
in
= V
out_nom
+ 8.5 V.
8. Not guaranteed in dropout.
9. Values based on design and/or characterization.
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NCV47701
TYPICAL CHARACTERISTICS
1.32
V
REF1
, REFERENCE VOLTAGE (V)
I
q
, QUIESCENT CURRENT (mA)
1.31
1.30
1.29
1.28
1.27
1.26
1.25
1.24
−40 −20
0
20 40 60 80 100 120 140 160
T
J
, JUNCTION TEMPERATURE (°C)
V
in
= 13.5 V
I
out
= 5 mA
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
0
5
10
T
J
= 25°C
I
out
= 5 mA
V
out_nom
= 5 V
15
20
25
30
V
in
, INPUT VOLTAGE (V)
35
40
Figure 3. Reference Voltage vs. Temperature
Figure 4. Quiescent Current vs. Input Voltage
6
V
out
, OUTPUT VOLTAGE (V)
5
4
3
2
1
0
0
1
2
3
5
7
4
6
V
in
, INPUT VOLTAGE (V)
8
9
10
T
J
= 25°C
I
out
= 5 mA
V
out_nom
= 5 V
2
1
I
in
, INPUT CURRENT (mA)
0
−1
−2
−3
−4
−5
−6
−7
−8
−45 −40 −35 −30 −25 −20 −15 −10 −5
V
in
, INPUT VOLTAGE (V)
0
5
10
T
J
= 25°C
R
out
= 4.7 kW
V
out_nom
= 5 V
Figure 5. Output Voltage vs. Input Voltage
Figure 6. Input Current vs. Input Voltage
(Reverse Input Voltage)
V
DO
, DROPOUT VOLTAGE (mV)
700
600
500
400
300
200
100
0
0
V
in
= 13.5 V
V
out_nom
= 5 V
T
J
= 150°C
I
LIM
, OUTPUT CURRENT LIMIT (mA)
800
1400
1300
1200
1100
1000
900
800
700
600
0
5
10
15
20
25
30
35
V
in
, INPUT VOLTAGE (V)
40
45
T
J
= 150°C
T
J
= 25°C
V
out
= 4.5 V
V
out_nom
= 5 V
T
J
= −40°C
T
J
= 25°C
T
J
= −40°C
50
100
150
200
250
I
out
, OUTPUT CURRENT (mA)
300
350
Figure 7. Dropout vs. Output Current
Figure 8. Output Current Limit vs. Input Voltage
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