FPF2193 / FPF2194 / FPF2195 — Full Function Load Switch with Adjustable Current Limit
December 2012
FPF2193 / FPF2194 / FPF2195
Full-Function Load Switch with Adjustable Current Limit
Description
Features
<1.8 to 5.5 V Input Voltage Range
Controlled Turn-On
0.1 to 1.5 A Adjustable Current Limit
Under-Voltage Lockout
Thermal Shutdown
<2 µA Shutdown Current
Auto Restart
Fast Current Limit Response Time
5 µs to Moderate Over Currents
30 ns to Hard Shorts
Fault Blanking
Reverse Current Blocking
The FPF2193, FPF2194, and FPF2195 form a series of
load switches that provides full protection to systems
and loads that may encounter large current conditions.
These devices contain a 55 mΩ current-limited P-
channel MOSFET that can operate over an input voltage
range of 1.8 to 5.5 V. Internally, current is prevented
from flowing when the MOSFET is off and the output
voltage is higher than the input voltage. Switch control is
by a logic input (ON) capable of interfacing directly with
low-voltage control signals. Each part contains thermal
shutdown protection that shuts off the switch to prevent
damage to the part when a continuous over-current
condition causes excessive heating.
When the switch current reaches the current limit, the
parts operate in a constant-current mode to prohibit
excessive currents from causing damage. For the
FPF2193 and FPF2194, if the constant current condition
still persists after 30 ms, the parts shut off the switch
and pull the fault signal pin (FLAGB) LOW. The
FPF2193 has an auto-restart feature that turns the
switch on again after 450 ms if the ON pin is still active.
The FPF2194 does not have this auto-restart feature, so
the switch remains off until the ON pin is cycled. The
FPF2195 does not turn off after a current limit fault, but
remains in the constant-current mode indefinitely. The
minimum current limit is 100 mA.
These parts are available in a space-saving six ball
advanced 1 x 1.5 mm WLCSP package.
Applications
PDAs
Cell Phones
Handheld GPS Devices
Portable Enterprise / Industrial Devices
Digital Cameras
Peripheral Ports and Accessories
Portable Medical Equipment
Hot Swap Supplies
Ordering Information
Part
Number
FPF2193
FPF2194
FPF2195
© 2009 Fairchild Semiconductor Corporation
FPF2193/4/5 • Rev. 1.0.5
Current
Limit [mA]
100-1500
Current Limit Blanking
Time [ms]
15/30/60
15/30/60
0
Auto-Restart
Time [ms]
225/450/900
NA
NA
ON Pin
Activity
Active HIGH
Top Mark
S6
S7
S9
www.fairchildsemi.com
FPF2193 / FPF2194 / FPF2195 — Full Function Load Switch with Adjustable Current Limit
Application Diagram
Figure 1.
Typical Application
Block Diagram
Figure 2.
Functional Block Diagram
© 2009 Fairchild Semiconductor Corporation
FPF2193/4/5 • Rev. 1.0.5
www.fairchildsemi.com
2
FPF2193 / FPF2194 / FPF2195 — Full Function Load Switch with Adjustable Current Limit
Pin Configuration
Figure 3.
1.0 x 1.5 mm Chip-Scale Package
Figure 4.
Pin Configuration (Bottom View)
Pin Definitions
Pin #
C1
B2
B1
A1
C2
A2
Name
I
SET
V
IN
V
OUT
FLAGB
GND
ON
Description
Current Limit Set Input. A resistor from I
SET
to ground sets the current limit for the switch.
Supply Input. Input to the power switch and the supply voltage for the IC.
Switch Output. Output of the power switch.
Fault Output. Active LOW, open-drain output that indicates an over-current supply, under-
voltage, or over-temperature state.
Ground.
ON control input, active HIGH.
© 2009 Fairchild Semiconductor Corporation
FPF2193/4/5 • Rev. 1.0.5
www.fairchildsemi.com
3
FPF2193 / FPF2194 / FPF2195 — Full Function Load Switch with Adjustable Current Limit
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.
Symbol
P
D
TJ
T
STG
Θ
JA
ESD
Parameter
V
IN
, V
OUT
, ON, FLAGB, ISET to GND
Power Dissipation at T
A
= 25°C
(1)
Operating Temperature Range
Storage Temperature
Thermal Resistance, Junction to Ambient
Electrostatic Discharge Capability
Human Body Model, JESD22-A114
Machine Model, JESD22-A115
Min.
-0.3
-40
-65
8000
400
Max.
6.0
1.2
+125
+150
85
Unit
V
W
°C
°C
°C/W
V
Notes:
1. Package power dissipation on one-square inch pad, two-ounce copper board.
Recommended Operating Conditions
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.
Symbol
V
IN
T
A
Input Voltage
Parameter
Ambient Operating Temperature
Min.
1.8
-40
Max.
5.5
+85
Unit
V
°C
© 2009 Fairchild Semiconductor Corporation
FPF2193/4/5 • Rev. 1.0.5
www.fairchildsemi.com
4
FPF2193 / FPF2194 / FPF2195 — Full Function Load Switch with Adjustable Current Limit
Electrical Characteristics
V
IN
= 1.8 to 5.5 V, T
A
= -40 to +85°C unless otherwise noted. Typical values are at V
IN
= 3.3 V and T
A
= 25°C.
Symbol
Basic Operation
V
IN
I
Q
Parameter
Operating Voltage
Conditions
Min.
1.8
Typ.
Max.
5.5
Units
V
µA
V
IN
=1.8 V
Quiescent Current
I
OUT
=0 mA, V
ON
=V
IN
V
IN
=3.3 V
V
IN
=5.5 V
R
ON
V
IH
V
IL
On Resistance
On Input Logic High Voltage
ON
On Input Logic Low Voltage
On Input Leakage
V
IN
Shutdown Current
V
FLB_L
V
FLB_H
FLAGB Output Logic Low
Voltage
FLAGB Output Logic High
Leakage Current
T
A
=25°C, I
OUT
=200 mA
T
A
=-40 to 85°C, I
OUT
=200 mA
V
IN
=1.8 V
V
IN
=5.5 V
V
IN
=1.8 V
V
IN
=%.5 V
V
ON
=V
IN
or GND
V
ON
=0 V, V
IN
=5.5 V,
V
OUT
=Short to GND
V
IN
=5 V, I
SINK
=10 mA
V
IN
=1.8, I
SINK
=10 mA
V
IN
=5 V, Switch ON
-1
-2
0.8
1.4
70
75
80
55
80
135
mΩ
V
0.5
1.0
0
1
2
0.05
0.12
0.20
0.30
1
V
µA
µA
V
µA
Reverse Block
I
SDT
V
breakdown
I
LIM
I
LIM(MIN)
TSD
V
UVLO
V
UVLO_HYST
Dynamic
td
ON
t
R
t
ON
td
OFF
t
F
t
OFF
t
BLANK
t
RSTRT
Delay On Time
V
OUT
Rise Time
Turn-On Time
Delay Off Time
V
OUT
Fall Time
Turn-Off Time
Over-Current Blanking Time
Auto-Restart
R
L
=500
Ω,
C
L
=0.1 µF
R
L
=500
Ω,
C
L
=0.1 µF
R
L
=500
Ω,
C
L
=0.1 µF
R
L
=500
Ω,
C
L
=0.1 µF
R
L
=500
Ω,
C
L
=0.1 µF
R
L
=500
Ω,
C
L
=0.1 µF
FPF2193, FPF2194
FPF2193
FPF2194, FPF2195
V
IN
=V
OUT
=3.3 V, Moderate Over-
Current Condition
V
IN
=V
OUT
=3.3 V, Hard Short
© 2009 Fairchild Semiconductor Corporation
FPF2193/4/5 • Rev. 1.0.5
5
V
OUT
Shutdown Current
Reverse Breakdown Voltage
Current Limit
Minimum Current Limit
Thermal Shutdown
Under-Voltage Lockout
Under-Voltage Lockout
Hysteresis
V
ON
=0 V, V
OUT
=5.5 V,
V
IN
=Short-to-GND
V
IN
=V
ON
=0 V, I
OUT
=200 µA
V
IN
=3.3 V, V
OUT
=3.0 V, R
SET
=690
Ω
V
IN
=3.3 V, V
OUT
=3.0 V
Shutdown Threshold
Return from Shutdown
Hysteresis
V
IN
Increasing
-2
9
600
800
100
140
130
10
1.55
1.65
50
2
µA
V
Protections
1000
mA
ma
°C
1.75
V
mV
20
20
40
15
110
125
15
225
30
450
NA
5
30
60
900
µs
µs
µs
µs
µs
µs
ms
ms
µs
ns
www.fairchildsemi.com
t
SC
Short-Circuit Response Time
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