FPF2495BUCX [ONSEMI]
28 V, Over-Voltage, Over-Current Protection Load Switch with Adjustable Current-Limit Control;
| 型号： | FPF2495BUCX |
| 厂家： | 
ONSEMI |
| 描述： | 28 V, Over-Voltage, Over-Current Protection Load Switch with Adjustable Current-Limit Control |
| 文件： | 总10页 (文件大小：836K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
IntelliMAXE 28 V,
Over-Voltage, Over-Current
Protection Load Switch with
Adjustable Current-Limit
Control
www.onsemi.com
FPF2495B
Description
The FPF2495B advanced load−management switch targets
applications requiring a highly integrated solution. It disconnects
loads powered from the DC power rail (<6 V) with stringent off−state
current targets and high load capacitances (<100 mF). The FPF2495B
consists of a slew−rate controlled low−impedance MOSFET switch
(100 mW maximum) and integrated analog features. The slew−rate
controlled turn−on characteristic prevents inrush current and the
resulting excessive voltage droop on power rails. FPF2495B has
over−voltage protection and over−temperature protection.
The FPF2495B has a Reverse−Current Blocking (RCB) function
WLCSP9 1.22x1.22x0.581
CASE 567SU
MARKING DIAGRAM
that obstructs unwanted reverse current from V
to V during OFF
OUT
IN
states. The exceptionally low off−state current drain (<2 mA
maximum) facilitates compliance with standby power requirements.
TX&K
&.&2&Z
The input voltage range operates from 2.5 V to 5.5 V to support a
DC
wide range of applications in consumer, optical, medical, storage,
portable, and industrial−device power management. Switch control is
managed by a logic input (active HIGH) capable of interfacing
directly with low−voltage control signal / General−Purpose Input /
Output (GPIO) without an external pull−down resistor.
The device is packaged in advanced, fully “green” compliant,
1.22 mm x 1.22 mm, Wafer−Level Chip−Scale Package (WLCSP).
TX
= ON Semiconductor Logo
= Specific Device Code
= Lot Code
= Numeric Date Code
= Assembly Plant Code
&K
&2
&Z
Features
• V : 2.5 V~5.5 V
IN
ORDERING INFORMATION
See detailed ordering and shipping information on page 2 of
this data sheet.
• 28 V Absolute Ratings at V
OUT
• Current Capability: 2.8 A
• Adjustable Current Limit: 0.05 A ~ 2.5 A (Typ.)
♦ 0.1 A~2.5 A with 10% Accuracy
♦ < 0.1 A with 15% Accuracy
Applications
• Smart Phones, Tablet PCs
• Storage, DSLR, and Portable Devices
• R : Typ. 70 mΩ & Max. 100 mΩ at 5 V and 1 A I
ON
IN
OUT
• Output OVP: Min. = 5.6 V, Typ. = 5.8 V, Max. = 6 V
• No Output Discharge During Off State
• Open−Drain OCP on FLAGB
• Thermal Shutdown
• Under−Voltage Lockout (UVLO)
• Reverse−Current Blocking (RCB) during OFF
• Logic CMOS IO Meets JESD76 Standard for GPIO Interface and
Related Power Supply Requirements
• ESD Protected:
♦ Human Body Model: >2 kV
♦ Charged Device Model: >2.5 kV
♦ IEC 61000−4−2 Air Discharge: >15 kV
♦ IEC 61000−4−2 Contact Discharge: >8 kV
© Semiconductor Components Industries, LLC, 2012
1
Publication Order Number:
April, 2020 − Rev. 2
FPF2495B/D
FPF2495B
ORDERING INFORMATION
Operating
Temperature Range
Part Number
Package
Packing Method
Top Mark
FPF2495BUCX
−40 to 85°C
9−Ball, WLCSP, 3x3 Array, 0.4 mm Pitch,
Back Side Lamination
Tape & Reel
TX
Application Diagram
Battery
VIO
Rpull−up
USB
Vin
Vout
Vout
5V Boost
Connector
OTG
CIN
COUT
Device
ON
IO
OCP
FLAGB
FPF2495B
GND
ISET
AP
IO
1. C and C
capacitors recommended for improvement of device stability.
IN
OUT
Figure 1. Typical Application
Functional Block Diagram
HV Power Device
RCB
VIN
VOUT
Current
Limit
OVP
UVLO
Control Logic
ISET
ON
OCFLAGB
Charge
Pump
Thermal
Shutdown
IntelliMAX
FPF2495B
GND
Figure 2. Functional Block Diagram
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2
FPF2495B
Pin Configurations
1
2
3
2
3
1
A
B
A
B
VOUT
VIN
GND
VIN
GND
VOUT
VOUT
ON
VIN
GND
ISET
VIN
GND
ISET
VOUT
ON
OCFLAGB
OCFLAGB
Figure 3. Pin Assignments (Top View)
Figure 4. Pin Assignments (Bottom View)
PIN DESCRIPTION
Pin #
A3, B3
A1, B1
A2
Name
Description
V
OUT
Switch Output
V
IN
Supply Input: Input to the power switch
Ground (true device ground)
GND
ON
B2
C3
ON/OFF Control Input: Active HIGH − GPIO
Logic HIGH
Logic LOW
Switch Enable
Switch Disable
compatible
C1
C2
OC
Fault Output: Active LOW, open−drain output that indicates an input over current.
FLAGB
External pull−up resistor to V is required.
CC
I
Current Limit Set Input: A resistor from ISET to ground sets the current limit for the switch.
SET
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameters
Min.
−0.3
−0.3
Max.
28.0
6.0
Unit
V
PIN
V
OUT
to GND, V
to V
IN
V
OUT
ON V FLAGB, I to GND
SET
,
IN,
I
Maximum Continuous Switch Current (Note 1)
2.8
A
W
SW
t
Total Power Dissipation at T = 25°C
1.0
PD
A
T
Operating Junction Temperature
Storage Junction Temperature
−40
−65
+150
+150
°C
J
T
°C
STG
q
Thermal Resistance, Junction−to−Ambient
(1−inch Square Pad of 2 oz. Copper)
95
(Note 2)
°C/W
JA
110
(Note 3)
ESD
Electrostatic Discharge Capability
Human Body Model, JESD22−A114
Charged Device Model, JESD22−C101
Air Discharge (V to GND)
2.0
2.5
kV
IEC61000−4−2 System Level
V
V
15.0
8.0
IN, ON, OUT
Contact Discharge (V
V
V
to GND)
IN, ON, OUT
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. Maximum Junction Temperature = 85°C.
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3
FPF2495B
2. Measured using 2S2P JEDEC std. PCB.
3. Measured using 2S2P JEDEC PCB cold plate method.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameters
Min.
2.5
Max.
5.5
Unit
V
V
IN
Supply Voltage
Ambient Operating Temperature
T
A
−40
85
°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.
ELECTRICAL CHARACTERISTICS
Unless otherwise noted; V = 2.5 to 5.5 V, T = −40 to +85°C; typical values are at V = 5 V and T = 25°C.
IN
A
IN
A
Symbol
Parameters
Condition
Min.
Typ.
Max.
Unit
BASIC OPERATION
V
Input Voltage
2.5
5.5
2
V
IN
Q(OFF)
I
Off Supply Current
Shutdown Current
Quiescent Current
On Resistance
V
V
= GND, V
= Open
OUT
1
mA
mA
mA
mW
ON
I
= 5.5 V, V
= 0 V, V = GND
0.1
65
70
75
70
4.0
100
100
105
SD(OFF)
IN
OUT
ON
I
Q
I
= 0 mA
= 5.0 V, I
= 3.7 V, I
= 5.0 V, I
OUT
R
V
IN
V
IN
V
IN
V
IN
V
IN
V
IN
V
IN
V
IN
= 1 A
ON
OUT
OUT
OUT
= 1 A
(6)
R
On Resistance
= 1.5 A
mW
V
ON
V
IH
ON Input Logic HIGH Voltage
ON Input Logic LOW Voltage
= 2.5 V to 5.5 V
= 2.5 V to 5.5 V
1.15
V
0.65
0.2
0.30
1
V
IL
IL_FLAG
V
FLAGB Output Logic LOW
Voltage
V
= 5 V, I
= 10 mA
0.1
SINK
= 2.5 V, I
= 10 mA
0.15
SINK
I
FLAGB Output HIGH Leakage
Current
= 5 V, Switch On
mA
FLAGB_LK
I
On Input Leakage
V
V
= 0 V to V
IN
1.0
mA
ON
ON
R
Pull−Down Resistance at ON
Pin
= 2.5~5.5 V, V = HIGH,
T = −40 to 85°C
14
MW
ON_PD
IN
ON
A
OVER−VOLTAGE PROTECTION
V
Output OVP Lockout
V
V
V
V
Rising Threshold
5.50
1
5.80
5.50
0.3
6.00
OV_TRIP
OUT
OUT
OUT
Falling Threshold
Falling Threshold
OUT
Output OVP Hysteresis
V
HYS
(6)
(6)
t
OVP Response Time
I
= 0.5 A, C = 1 mF, T = 25°C,
4
ms
OVP
OUT
L
A
V
from 5.5 V to 6.0 V
OUT
OVER−CURRENT PROTECTION
I
Current Limit
mA
V
V
= 5 V, R
OUT
(Note 4)
= 20000 W,
42
50
58
LIM
IN
SET
= 1.68 to 5 V with 15% Accuracy
V
V
= 5 V, R
OUT
(Note 4)
= 2100 W,
450
900
500
550
1100
IN
SET
= 1.68 to 5 V with 10% Accuracy
V
V
= 5 V, R
= 1070 W,
1000
IN
OUT
SET
= 1.68 to 5 V with 10% Accuracy
(Note 4)
V
Under−Voltage Lockout
V
V
V
Increasing
2.4
2.2
200
7
UVLO
IN
IN
Decreasing
V
UVLO Hysteresis
RCB Current
mV
mA
ms
UVLO_HYS
I
V
ON
= 0 V, V
= 5.5 V,
RCB
OUT
t
Hard Over−Current Response
Time
Moderate Over−Current Condition,
I ≥ I , V = 0 V
OUT
6
HOCP
LIM OUT
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4
FPF2495B
ELECTRICAL CHARACTERISTICS (continued)
Unless otherwise noted; V = 2.5 to 5.5 V, T = −40 to +85°C; typical values are at V = 5 V and T = 25°C.
IN
A
IN
A
Symbol
Parameters
Condition
Min.
Typ.
Max.
Unit
OVER−CURRENT PROTECTION
t
Over−Current Response Time
Moderate Over−Current Condition,
≥ I ≤ V
7
8
ms
ms
°C
OCP
I
V
OUT
LIM OUT
IN
t
Over−Current Flag Response
Time
When Over−Current Occurs to Flag
Pulling LOW
OC_FLAG
TSD
Thermal Shutdown
Shutdown Threshold
Return from Shutdown
Hysteresis
150
130
20
DYNAMIC CHARACTERISTICS
Turn−On Delay (Note 5, 6)
Rise Time (Note 5, 6)
V
A
= 5 V, R = 100 W, C = 1 mF,
t
0.67
0.69
1.36
0.01
0.22
0.23
0.65
0.65
1.3
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
IN
L
L
DON
T = 25°C, R
= 2040 W
SET
t
R
V
OUT
t
Turn−On Time (Note 5, 7)
Turn−Off Delay (Note 6, 5)
ON
t
DOFF
t
F
V
OUT
Fall Time (Note 6, 5)
t
Turn−Off Time (Note 8, 5)
Turn−On Delay (Note 6, 9)
OFF
V
IN
= 5 V, R = 3.8 W, C = 10 mF,
t
0.78
0.82
1.6
L
L
DON
T = −40 to 85°C, R
= 634 Ω
A
SET
t
R
V
OUT
Rise Time (Note 6, 9)
t
Turn−On Time (Note 7, 9)
Turn−Off Delay (Note 6, 9)
VOUT Fall Time (Note 6, 9)
Turn−Off Time (Note 8, 9)
ON
t
4
10
DOFF
t
F
76
120
130
ms
t
80
ms
OFF
4. Characterization based on 1% tolerance resistor.
5. This parameter is guaranteed by design and characterization; not production tested.
6. t
/t
/t /t are defined in Figure 5 below.
DON DOFF
R
F
.
7. t = t + t
ON
OFF
R
F
DON
8. t
= t + t
.
DOFF
9. This parameter is guaranteed by design.
TIMING DIAGRAM
90%
where:
VON
t
t
t
t
= Delay On Time
DON
10%
= V
Rise Time
R
OUT
= Turn−On Time
ON
DOFF
= Delay Off Time
Fall Time
OUT
t = V
F
t
= Turn Off Time
OFF
90%
90%
VOUT
10%
10%
tdON
tR
tdOFF
tF
tON
tOFF
Figure 5. Timing Diagram
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5
FPF2495B
OPERATION AND APPLICATION DESCRIPTION
Input Capacitor
using Table 1. Resistor tolerance of 1% or less is
recommended.
To limit the voltage drop on the input supply caused by
transient inrush current when the switch turns on into
discharge load capacitor; a capacitor must be placed in
Table 1. CURRENT LIMIT SETTINGS BY RSET (Note10)
between the V and GND pins. A high−value capacitor on
IN
Min. Current Typ. Current Max. Current
C
IN
can be used to reduce the voltage drop in high−current
Limit (mA)
2250
2025
1800
1570
1350
1125
900
Limit (mA)
2500
2250
2000
1750
1500
1250
1000
900
Limit (mA)
2750
2475
2200
1920
1650
1375
1100
990
R
W
SET
applications.
420
469
528
604
680
866
Output Capacitor
An output capacitor should be placed between the V
and GND pins. This capacitor prevents parasitic board
inductance from forcing V below GND when the switch
is on. This capacitor also prevents reverse inrush current
from creating a voltage spike that could damage the device
OUT
OUT
in the case of a V
short.
OUT
1070
1200
1330
1500
1740
2100
2320
2550
2940
3400
4020
4990
6490
9530
20000
Fault Reporting
Upon the detection of an over−current, OC_FLAGB
signal the fault by activating LOW.
810
720
800
880
630
700
770
Current Limiting
540
600
660
The current limit ensures that the current through the
switch does not exceed the maximum set value, while not
limiting the minimum value. The current at which the part’s
limit is adjustable through the selection of the external
resistor connected to the ISET pin. Information for selecting
the resistor is found in the section below. The device acts as
a constant−current source when the load draws more than the
maximum value set by the device until thermal shutdown
occurs. The device recovers if the die temperature drops
below the threshold temperature.
450
500
550
405
450
495
360
400
440
315
350
385
270
300
330
225
250
275
180
200
220
135
150
165
Under−Voltage Lockout (UVLO)
90
100
110
The under−voltage lockout turns the switch off if the input
voltage drops below the lockout threshold. With the ON pin
active, the input voltage rising above the UVLO threshold
releases the lockout and enables the switch.
42
50
58
10.Table values based on 1% tolerance resistor.
11. For 50 mA setting, tolerance is 15% with 1%.
If current limit is not used it is OK for the I
connected with GND, but the maximum current must be less
than the maximum current capability of 2.8 A.
pin to be
SET
Reverse−Current Blocking
The reverse−current blocking feature protects the input
source against current flow from output to input when the
load switch is off.
BOARD LAYOUT
For best performance, all traces should be as short as
possible. To be most effective, the input and output
capacitors should be placed close to the device to minimize
the effect that parasitic trace inductance may have on normal
and short−circuit operation. Using wide traces for VIN,
VOUT, GND helps minimize parasitic electrical effects
along with minimizing the case−to−ambient thermal
impedance.
Thermal Shutdown
The thermal shutdown protects the die from internally or
externally generated excessive temperature. During an
over−temperature condition, the switch is turned off. The
switch automatically turns on again if the temperature of the
die drops below the threshold temperature.
Setting Current Limit
The current limit is set with an external resistor connected
between the I
and GND pins. The resistor is selected
SET
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6
FPF2495B
TYPICAL PERFORMANCE CHARACTERISTICS
T = 25°C
A
Figure 1. tON Response
Figure 2. OVP Response (Increase VOUT to OVP
Trip Point)
Figure 4. tOFF Response
Figure 3. OC_FLAGB Response Time
(Toggle RLOAD from High to Low Resistance)
Figure 5. tOCP Response Time
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7
FPF2495B
PRODUCT−SPECIFIC DIMENSIONS
Parts
D
E
X
Y
FPF2495BUCX
1220 mm 30 mm
1220 mm 30 mm
210 mm
210 mm
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8
MECHANICAL CASE OUTLINE
PACKAGE DIMENSIONS
WLCSP9 1.22x1.22x0.581
CASE 567SU
ISSUE A
DATE 22 APR 2020
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DESCRIPTION:
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WLCSP9 1.22x1.22x0.581
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