NCP392C
Adjustable Front End
Overvoltage Protection
Controller with Protected
Vbus Output
The NCP392C is an overvoltage front end protection controller and
is able to disconnect the systems from its output pin in case wrong
input operating conditions are detected, up to +28 V. Thanks to this
device using internal NMOS, no external device is necessary, reducing
the system cost and the PCB area of the application board.
Internal OVLO threshold is available, or can be adjusted if an
external resistor bridge is used.
At power up (EN pin = low level), the Vout turns on tstart time after
internal timer elapsed.
The NCP392C features an ACOK pin that indicates faulty
condition.
Features
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MARKING
DIAGRAM
392Cx
AYWW
G
WLCSP 12
FCC SUFFIX
CASE 567JM
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Over−voltage Protection Up to + 28 V
On−chip Low R
DS(on)
NMOS Transistors: Typical 34 mW
Over−voltage Lockout (OVLO)
Externally Adjustable OVLO
Internal 15 ms Startup Delay
Shutdown EN Input
ACOK Status Pin
+ 100 V Surge Capability, in Compliance with IEC61000−4−5
Standard
Compliance to IEC61000−4−2 (Level 4) Standard
8 kV (Contact)
15 kV (Air)
ESD Ratings:
Machine Model = B (200 V)
Human Body Model = 2 (2 kV)
CSP−12 Package 1.3 x 2.0 mm, 0.4 mm Pitch
This is a Pb−Free Device
392Cx = Specific Device Number
392Cx =
(x = R or S)
A
= Assembly Location
Y
= Year
WW = Work Week
G
= Pb−Free Package
PIN CONNECTION
1
A
2
3
4
EN
OUT
OUT
PGND
B
ACOK
OUT
IN
PGND
C
OVLO
IN
IN
PGND
(Top View)
ORDERING INFORMATION
See detailed ordering, marking and shipping information on
page 9 of this data sheet.
Typical Applications
Cell Phones
Tablets
Camera Phones
Digital Still Cameras
Personal Digital Applications
©
Semiconductor Components Industries, LLC, 2015
1
September, 2015 − Rev. 3
Publication Order Number:
NCP392C/D
NCP392C
B3 IN
0.1
μF
C2 IN
C3 IN
C1 OVLO
GND
A4
GND
B4
GND
C4
EN
A1
/EN
NCP392C
OUT A2
OUT A3
OUT B2
/ACOK B1
OUTPUT
CHARGER
B+
PMIC
/Flag
Figure 1. Typical Application Circuit
FUNCTIONAL BLOCK DIAGRAM
INPUT
Gate driver
VREF
GND
External OVLO
selected
OVLO
Charge
Pump
C1
R1
OVLO
TSD
OVLO
Internal OVLO
selected
SEL
Control
logic and
Timer
C2
EN
EN
R2
Fault &
EN
ACOK
Figure 2. Functional Block Diagram
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NCP392C
PIN FUNCTION DESCRIPTION
1
A
2
3
4
EN
OUT
OUT
PGND
B
ACOK
OUT
IN
PGND
C
OVLO
IN
IN
PGND
(Top View)
Figure 3. Pinout
Table 1. NCP392 PIN DESCRIPTION
Pin
A1
Pin
Name
EN
Type
I/O
Description
Enable pin bar.
The device enters in shutdown mode when this pin is tied to a high level. In this case the output is
disconnected from the input.
Output voltage pins.
These pins follow IN pins, with debounce time, when “no fault” are detected.
The outputs are disconnected from the Vin power supply when the input voltage is below UVLO,
above OVLO threshold or internal thermal protection is exceeded.
The three OUT pins must be hardwired together and used for power dissipation.
Ground. The three GND pins must be hardwired together and connect to the system GND.
ACOK pin: fault indication pin. Open drain. This pied in tied
low if Vin is within UVLO and OVLO range.
Input voltage pins.
These pins are connected to the power supply.
The three IN pins must be hardwired together.
External OVLO Adjustment. Connect external resistor bridge to OVLO pin to select a different OVLO
threshold. Connect OVLO pin to GND if not used. In this case internal OVLO will be selected.
1
0
V
IN
< V
UVLO
or V
IN
≥
V
OVLO
Voltage stable
A2, A3,
B2
OUT
OUTPUT
A4, B4,
C4
B1
PGND
ACOK
POWER
OUTPUT
B3, C2,
C3
C1
IN
POWER
OVLO
INPUT
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NCP392C
Table 2. MAXIMUM RATINGS
Rating
Minimum Voltage (IN, OVLO to GND)
Minimum Voltage (All others to GND)
Maximum Voltage (IN to GND)
Maximum Voltage (OVLO to GND)
Maximum Voltage (OUT to GND)
Maximum Voltage (All others to GND)
Maximum DC current
Peak input current
Thermal Resistance, Junction−to−Air
Operating Ambient Temperature Range
Storage Temperature Range
Junction Operating temperature
ESD Withstand Voltage (IEC 61000−4−2)
Human Body Model (HBM), model = 2 (Note 1)
Machine Model (MM) model = B (Note 2)
Moisture Sensitivity
Symbol
Vmin
IN
Vmin
Vmax
IN
Vmax
OVLO
Vmax
OUT
Vmax
Imax
Ipeak
R
qJA
T
A
T
stg
T
J
V
esd
Value
−0.3
−0.3
29
14
22
7
4.5
8
70
−40 to +85
−65 to +150
+ 125
15 kV air, 8 kV contact
2000 V
200 V
Level 1
Unit
V
V
V
V
V
V
A
A
°C/W
°C
°C
°C
kV
V
V
MSL
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. Human Body Model, 100 pF discharged through a 1.5 kW resistor following specification JESD22/A114.
2. Machine Model, 200 pF discharged through all pins following specification JESD22/A115
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NCP392C
Table 3. ELECTRICAL CHARACTERISTICS
Min / Max limits values (−40°C < T
A
< +85°C) and V
in
= +5 V (Unless otherwise noted). Typical values are T
A
= +25°C.
Characteristics
Input Voltage Range
Under voltage Lockout
Under voltage Lockout
hysteresis
Internal Over voltage
Lockout threshold
Internal Over voltage Lockout
hysteresis
External OVLO Reference
Symbols
V
in
, V
OVLO
UVLO
UVLO
hyst
OVLO
V
in
rising
V
in
falling
V
in
rising (Note 3)
OVLO pin tied to GND − 25°C
NCP392CR
NCP392CS
−
13.4
15
1.5
1.12
1.18
4
OVLO
EXThyst
OVLO
SEL
R
DSon
I
DD
I
STB
I
IN_OVLO
I
OVLO
V
in
= 5 V, EN = GND, –40°C < T
J
< 125°C
No load, EN = 0.4 V
No load, EN = 1.2 V,
V
OVLO
= 3 V, V
IN
= 5 V, V
OUT
= 0 V
60
V
in
falling
0.2
34
58
2
0.3
50
100
6
100
100
1.20
1.221
60
13.8
15.5
Conditions
Min
2.8
Typ
Max
28
2.8
−
14.2
16
2.5
1.24
1.26
20
V
%
V
mW
mA
mA
mA
nA
%
V
Unit
V
V
mV
V
OVLO
hyst
OVLO
_EXT
V
in
falling (Note 3)
OVLO pin tied to GND − 25°C
NCP392CR
NCP392CS
External Adjustable OVLO
Over−Voltage Lockout
Hysteresis
External OVLO select
threshold
Vin versus Vout Resistance
Supply Quiescent Current
Standby Current
OVLO Supply current
OVLO select leakage
LOGIC
EN Voltage High
EN Voltage Low
ACOK Output Low Voltage
TIMINGS
Start up time
Enable time
Soft Start
ACOK Start up time
Turn off time
Disable time
OVLO Turn off time
TSD
Thermal shutdown
Thermal shutdown rearming
TSD
TSD rearm
t
START
t
EN
t
RISE
t
START2
t
OFF
t
DIS
t
OVLO
From V
in
> 2.8 V to 10% V
out,
EN low
V
in
present, From EN high to low, 10% V
out
From 10% to 90% of V
out
, C load 100
mF,
Rload, 100
W,
EN low
From Vin Valid to ACOK tied low, EN low or high
Surge off time
From EN >1.2 V to 90% V
out.
No load
V
in
rising 2 V/ms
V
IH
V
IL
V
OL
I
SINK
= 1 mA
1.2
0.4
0.4
V
V
V
15
15
1
30
100
20
1.5
ms
ms
ms
ms
ns
ms
ms
140
115
°C
°C
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
3. Please contact your ON Semiconductor representative for additional OVLO threshold.
Electrical parameters are guaranteed by correlation across the full range of temperature.
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