© Semiconductor Components Industries, LLC, 2017
March, 2018 − Rev. 3
1 Publication Order Number:
NCP3902/D
NCP3902
High-Current Bidirectional
Load Switch with Dual Input
Support
Description
The NCP3902 is a high voltage, high current, bidirectional load
switch. It provides input overvoltage and surge protection as well as
reverse−blocking of output voltage. The logic control of the device is
designed to interact with both a system controller and a wireless
charging receiver which allows creating a dual input charger
application with a single switch.
Features
DC Input Voltage Operating Range from 3.0 V to 20 V
28 V DC Absolute Maximum Input Voltage
Pin−selectable Overvoltage Protection (13 V / 17 V)
Surge Protection Compliant with IEC61000−4−5 at 100 V
Input Voltage Sense Output with Selectable Clamp (16 V / 20 V)
Reverse Blocking Protection from OUT to USBIN
Switch On−resistance of 23 mW Typical
3 A DC Nominal and 5 A Maximum Current Capability
Autonomous Mode and Slave Mode Operation
50 ms Input Supply Detect Deglitcher in Autonomous Mode
50 ms Break−before−make Timing with Discharge
Bi−directional Status Indicator and OTG Enable Pin
Device Enable Input (active low)
Wireless Enable Output (active low)
These Devices are Pb−Free and are RoHS Compliant
Typical Applications
Smart Phone
Handheld Devices
Tablets
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WLCSP20
CASE 567PM
MARKING DIAGRAM
A = Assembly Location
L = Wafer Lot
Y = Year
WW = Work Week
G = Pb−Free Package
3902
ALYWW
G
See detailed ordering and shipping information on page 19 o
f
this data sheet.
ORDERING INFORMATION
NCP3902
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2
TYPICAL APPLICATION DIAGRAM
GND
USBIN OUT
IEC
100V
Core
Supply
OVP
Drivers
&
Logic
USB_SNS
Protected
Sense
RX_N
EN_N
FLAG_N
OUT
25mΩ
Battery
Charger
System
Control
NCP3902 Power Mux
EN_N
Wireless Rx
RX_N
VP
USBIN
Ground / Float
To System
Figure 1. Application Schematic
PIN OUT (TOP VIEW)
Figure 2. Pin out − Top View
Table 1. PIN FUNCTION DESCRIPTION
Pin out Name Type Function
A1, A2, A3, A4, A5 USBIN Power Load switch input
C1, C2 OUT Power Load switch output
C5 USB_SNS Analog Output Clamped USBIN sense output
C3 VP Digital Input Overvoltage protection setting
D4 EN_N Digital Input Active Low logic enable
D5 RX_N Digital Output Wireless receiver active
C4 FLAG_N
Digital Input OTG enable input
Digital Output Ready for OTG output
B4, B5 GND Ground Ground
NCP3902
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3
Table 2. MAXIMUM RATINGS
Rating Symbol Value Unit
USBIN (Note 1)
USBIN
−0.3 to 28 V
USBIN (Note 2) 100 V
USB_SNS (Note 1) USB_SNS −0.3 to 20 V
OUT (Note 1) V
OUT
−0.3 to 20 V
VP,EN_N,RX_N,FLAG_N (Note 1) V
CTRL
−0.3 to 6 V
Storage Temperature Range T
STG
−65 to 150 °C
Maximum Junction Temperature (Note 3) T
J
−40 to TSD °C
Moisture Sensitivity (Note 4) MSL Level 1
Human Body Model (HBM) ESD Rating (JEDEC standard: JESD22−A114) ESD HBM 2500 V
Charged Device Model (CDM) ESD Rating (JEDEC standard: JESD22−A114) ESD CDM 1000 V
Latch up Current @ 25°C
(JEDEC standard: JESD78 class II):
ILU
120 mA
Latch up Current @ 85°C
(JEDEC standard: JESD78 class II):
100 mA
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. With Respect to GND. According to JEDEC standard JESD22−A108
2. With Respect to GND. According to standard IEC61000−4−5 1.2/50 ms
3. A thermal shutdown protection avoids irreversible damage on the device due to power dissipation
4. Moisture Sensitivity Level (MSL): 1 per IPC/JEDEC standard: J−STD−020
Table 3. OPERATING CONDITION
Symbol Parameter Condition Min Typ Max Unit
USBIN Operational Power Supply on USBIN 0 28 V
VP, EN_N, RX_N, FLAG_N Operational Supply 0 5.5 V
I
OUT
Operational Output Current 0 3 A
V
OUT
Operational Supply on OUT OTG mode, USBIN = 0 V 0 5.5 V
C
IN
1
mF
C
INSNS
1
mF
C
OUT
0.1
mF
R
q
JA
(Notes 3 and 5) 45 °C/W
T
J
−40 25 +125 °C
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. The R
q
JA
is dependent on the PCB heat dissipation. Board used to drive this data was a 2s2p JEDEC PCB standard.

NCP3902FCCTBG

Mfr. #:
Manufacturer:
ON Semiconductor
Description:
Power Switch ICs - Power Distribution NCP3902 TOWER - HVR
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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