Current = 1.2 A, V
Current = 2 A, V
R
R
R
R
R
= 80 mΩ at VON = VIN = 4 V
DS(on)
= 85 mΩ at VON = VIN = 3.6 V
DS(on)
= 90 mΩ at VON = VIN = 3 V
DS(on)
= 360 mΩ at VON = VIN = 0.9 V
DS(on)
= 1000 mΩ at VON = VIN = 0.8 V
DS(on)
Max. = 4 V
IN
Max. = 4 V (Pulsed)
IN
RoHS Compliant
Description
This device is particularly suited for compact power
management in portable applications needing 0.8 V to
4 V input and 1.2 A output current capability. This load
switch integrated a level-shifting function that drives a Pchannel power MOSFET in a very small 0.8 X 0.8 X
0.5 mm3 WLCSP package.
Applications
Load Switch
Power Management in Portable Applications
Electrostatic Discharge Capability
Human Body Model, JESD22-A114
8
kV
Charged Device Model, JESD22-C101
2
a. 135°C/W when mounted on a
1-inch square pad of 2-oz copper.
b. 360°C/W when mounted on a
minimum pad of 2-oz copper.
Symbol
Parameter
Min.
Max.
Unit
VIN
Voltage on VIN Pin
0.8
4.0
V
VON
Voltage on ON Pin
0.7
4.0
V
TA
Operating Temperature
Range
1 V to 4 V
-40
85
°C
0.8 V to 4 V
-10
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Notes:
1. RΘJA is the sum of the junction-to-case and case-to-ambient thermal resistance where the case thermal
reference is defined as the solder mounting surface of the drain pins. RΘJC is guaranteed by design, while RΘJA
is determined by the board design.
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to Absolute Maximum Ratings.
The FDZ8040L is a low-R
packaged in space-saving 0.8 x 0.8 WLCSP.
The core of the device is an 80 mΩ P-channel MOSFET
capable of functioning over a wide input operating range
P-channel load switch
DS(ON)
of 0.8-4 V. The ON pin, an active HIGH TTL-compatible
input that supports input as low as 0.7 V, controls the
state of the switch.
Applications Information
Figure 21. Typical Application
Input Capacitor
To reduce device inrush current effect, a 0.1 µF ceramic
capacitor, CIN, is recommended close to the VIN pin. A
higher value of CIN can be used to further reduce the
voltage drop experienced as the switch is turned on into
a large capacitive load.
Output Capacitor
FDZ8040L works without an output capacitor. However,
if parasitic board inductance forces V
when switching off, a 0.1 µF capacitor, C
placed between the VOUT and GND pins.
A. NO JEDEC REGISTRATION APPLIES.
B. DIMENSIONS ARE IN MILLIMETERS.
C. DIMENSIONS AND TOLERANCE
PER ASME Y14.5M, 1994.
D. DATUM C IS DEFINED BY THE SPHERICAL
CROWNS OF THE BALLS.
E. PACKAGE NOMINAL HEIGHT IS 500 MICRONS
±39 MICRONS (461-539 MICRONS).
F. FOR DIMENSIONS D, E, X, AND Y SEE
PRODUCT DATASHEET.
G. DRAWING FILNAME: MKT-UC004AFrev1.
0.03
C
2X
0.03
C
2X
1
2
A
B
0.40
0.40
(X)±0.018
SEATING PLANE
C
0.06
C
0.05
C
E
D
D
E
0.40
0.40
Ø0.20
Cu Pad
Ø0.30
Solder Mask
(Y)±0.018
Ø0.260±0.020
4X
0.539
0.461
F
Physical Dimensions
Figure 22. 4-Ball, WLCSP, 2 X 2 Array, 0.4 mm Pitch, 250 µm Ball
Product-Specific Dimensions
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner
without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or
obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the
warranty therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: