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NCP439 Datasheet

2A Very Low Ron Switches

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NCP439
2A Very Low Ron Switches
at Low Vin Voltage
The NCP439 is a very low Ron MOSFET controlled by external
logic pin, allowing optimization of battery life, and portable device
autonomy.
This load switch is a best in class in term of RDS(on) optimization at
low VIN voltage.
Due to a current consumption optimization with PMOS structure,
leakage currents are eliminated by isolating connected IC’s on the
battery when not used.
Output discharge path is also embedded to eliminate residual
voltages on the output.
Proposed in wide input voltage range from 1.0 V to 3.6 V, and a very
small 0.96 x 0.96 mm WLCSP4, 0.5 mm pitch.
Features
1 V – 3.6 V Operating Range
37 mW P MOSFET at 1.8 V
DC Current Up to 2 A
Output Auto−Discharge
Active High EN Pin
WLCSP4 0.96 x 0.96 mm
This is a Pb−Free Device
Typical Applications
Mobile Phones
Tablets
Digital Cameras
GPS
Portable Devices
www.onsemi.com
MARKING
DIAGRAM
WLCSP4
CASE 567FG
1
AY
AYW
AY = Specific Device Code
A = Assembly Location
Y = Year
W = Wafer Lot
PIN DIAGRAM
12
A OUT
IN
B GND
EN
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information on page 8 of
this data sheet.
DCDC Converter
or
LDO
ENx
A2 IN OUT A1
B2 EN GND B1
EN
0
Figure 1. Typical Application Circuit
IC’n
© Semiconductor Components Industries, LLC, 2013
August, 2016 − Rev. 1
1
Publication Order Number:
NCP439/D


  ON Semiconductor Electronic Components Datasheet  

NCP439 Datasheet

2A Very Low Ron Switches

No Preview Available !

NCP439
PIN FUNCTION DESCRIPTION
Pin Name Pin Number
Type
IN A2 POWER
GND
EN
OUT
B1 POWER
B2 INPUT
A1 OUTPUT
Description
Load−switch input voltage; connect a 0.1 mF or greater ceramic capacitor from IN to GND as
close as possible to the IC.
Ground connection.
Enable input, logic high turns on power switch.
Load−switch output; connect a 0.1 mF ceramic capacitor from OUT to GND as close as pos-
sible to the IC is recommended.
BLOCK DIAGRAM
IN: Pin A2
EN: Pin B2
Control
logic
Gate driver and soft
start control
EN block
OUT: Pin A1
GND: Pin B1
Figure 2. Block Diagram
www.onsemi.com
2


Part Number NCP439
Description 2A Very Low Ron Switches
Maker ON Semiconductor
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NCP439 Datasheet PDF






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