FC6261 [FS]
Precision Power Distribution Switch;
| 型号： | FC6261 |
| 厂家： | 
First Silicon Co., Ltd |
| 描述： | Precision Power Distribution Switch |
| 文件： | 总11页 (文件大小：1154K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SEMICONDUCTOR
TECHNICAL DATA
FC6261
Precision Power Distribution Switch
FEATURES
GENERAL DESCRIPTION
The FC6261 series is a cost-effec�ve,low voltage,single
P-MOSFET load switch, op�mized for self-powered
and bus-powered Universal Serial Bus (USB)
applica�ons. This switch operates with inputs ranging
from 2.4V to 5.5V, making it ideal for both 3V and 5V
systems. The switch's low RDS(ON), 60mΩ, meets USB
voltage drop requirements. A built-in P-channel
MOSFET with true shutdown func�on to eliminate
any reversed current flow across the switch when it is
powered off. When the output voltage is higher than
input voltage, the power switch is turned off by
internal output reverse-voltage comparator.
Integrated Typical 60mΩ Power MOSFET
Low Supply Current
30μA Typical at Switch On State
1μA Typical at Switch Off State
Wide Input Voltage Range: 2.5V to 5.5V
Fast Transient Response: 8μs
0.1ms Typical Rise Time
Reverse Current Flow Blocking
Deglitched Open-Drain Over-Current Flag
Output
Output Discharge at shutdown(FC6261B1 only)
Thermal Shutdown Protec�on
Hot Plug-In Applica�on (Soꢀ-Start)
SOT-23-6/SOT-23-5 Package
nFLG is an open-drain output report over-current or
over temperature event. In addi�on, nFLG also has
typical 8ms deglitch �meout period and reports
output reverse-voltage condi�on.
APPLICATIONS
USB Bus/Self Powered Hubs
Baꢁery-Charger Circuits
Personal Communica�on Devices
Notebook Computers
T
YPICAL APPILCATION
100kΩ
Vin
nFLG
IN
1μF
Vout
Load
EN
OUT
GND
22μF
0.1μF
Figure 1. FC6261 Applica�on Circuit
2021. 01. 11
Revision No : 0
1/11
FC6261
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Parameter
Input Supply Voltage
EN Voltages
Value
-0.3~7
-0.3~VIN+0.3
-0.3~VIN+0.3
160
Unit
V
V
VOUT Voltage
V
Junc�on Temperature (Note2)
Storage Temperature Range
°C
-65~150
220
°C
Junc�on-to-ambient Thermal Resistance
Junc�on-to-case(top) Thermal Resistance
Lead Temperature (Soldering,10s)
°C/W
°C/W
°C
62
260
PIN CONFIGURATION
OUT 1
IN 1
5
IN
6
OUT
GND
GND
2
3
2
3
5 NC
4
EN
4 EN
nFLG
nFLG
SOT-23-6
FC6261A
SOT-23-5
FC6261B/C/B1
Part Number
FC6261A
Package
Top mark Quan�ty/ Reel
3000
3000
3000
3000
SOT-23-6
SOT-23-5
SOT-23-5
SOT-23-5
T14BXXX
T15AXXX
T16AXXX
T17EXXX
FC6261B
FC6261C
FC6261B1
FC6261A/FC6261B/FC6261C/FC6261B1 devices are Pb-free and RoHS compliant.
2021. 01. 11
Revision No : 0
2/11
FC6261
PIN FUNCTIONS
Pin No.
Name
Func�on
FC6261A
FC6261B/C/B1
Input Supply: Output MOSFET Drain, which also supplies IC's
1
2
5
2
IN
internal circuitry. Connect to posi�ve supply.
GND
IC ground connec�on
Enable: Logic level enable input. Do not floa�ng.
Make sure EN pin never floa�ng.
Pull high to enable IC.
3
4
3
EN
4
5
nFLG
NC
Over-Current: Open-Drain Fault Flag Output.
Switch Output: Output MOSFET Source of switch. Typically
connect to switched side of load.
6
1
OUT
ESD RATINGS
Items
Descrip�on
Value
Unit
VESD
Human Body Model for all pins
±2000
V
JEDEC specifica�on JS-001
RECOMMENDED OPERATING CONDITIONS
Items
Voltage Range
TJ
Descrip�on
Min
2.5
Max
5.5
Unit
V
IN
Opera�ng Junc�on Temperature Range
-40
125
°C
2021. 01. 11
Revision No : 0
3/11
FC6261
ELECTRICAL CHARACTERISTICS (Note 3)
(VIN=5V, CIN=1μF, COUT=1μF, TA = 25°C.)
Symbol
IN sec�on
VIN
Parameter
Condi�ons
Min
Typ
Max
Unit
Input voltage
2.5
5.5
60
V
Supply current,
Enable
IIN_ON
IIN_OFF
IREV
VIN=5.5V, No load on OUT
VIN=5.5V, No load on OUT
VOUT=5.5V, VIN=0V
30
0.1
2
μA
Shutdown current,
Disable
1
5
μA
μA
Reverse leakage
current
Under voltage
lockout exit
UVLO Hysteresis
VUVLO_ON
VIN rising from 0-5V
2
2.3
V
VUVLO_HY
100
mV
EN sec�on
High-level enable
voltage
VEN_H
VIN=5.5V
VIN=2.5V
1.5
V
V
Low-level disable
voltage
VEN_L
0.4
10
IEN
TON
EN input current
Turn on �me
Turn off �me
VEN=5.5V or 0V
-0.5
5
μA
ms
ms
CL=1μF, RL=100Ω
CL=1μF, RL=100Ω
0.2
0.1
TOFF
OUT sec�on
FC6261A
0.64
1.27
1.95
5
0.8
1.5
2.1
20
0.96
1.73
2.25
50
A
A
VIN=5V, VOUT=3.5V
FC6261B and FC6261B1
VIN=5V, VOUT=3.5V
FC6261C
Over Current CC
IOC
Regula�on
A
VIN=5V, VOUT=3.5V
Reverse voltage
protec�on
VREVERSE
VOUT-VIN
mV
TRISE
TFALL
Output rise �me
Output fall �me
Response �me to
short circuit
CL=1μF, RL=100Ω
CL=1μF, RL=100Ω
0.1
0.3
ms
ms
TIOS
12
μs
OUT Discharge
Resistance
RDIS
VIN=5V, VEN=0V, VOUT=5V
42
Ω
(FC6261B1 Only)
2021. 01. 11
Revision No : 0
4/11
FC6261
ELECTRICAL CHARACTERISTICS (con�nued)
(VIN=5V, CIN=1μF, COUT=1μF, TA = 25°C.)
Symbol Parameter
FLG(Fault flag) sec�on
Condi�ons
Min
Typ
Max
Unit
VOL
Output low voltage
IFLG=1mA
180
10
1
mV
mA
μA
IFLG
Con�nuous FLG sink
IFLG_LEAK
Off-state leakage
IOUT= 0A to 2A, over current
condi�on
8
ms
ms
Fault flag deglitch
�me
TFLG
VOUT-VIN>100mV, reverse
blocking protec�on
2.5
Power switch
RDS_ON
IOUT=0.5A(FC6261A)
60
mΩ
IOUT=1A(FC6261B/C/B1)
Thermal Shutdown
Thermal shutdown
TNORMAL
150
20
°C
°C
temperature
Thermal shutdown
threshold hysteresis
TNORMAL_HY
Note 1: Absolute Maximum Ra�ngs are those values beyond which the life of a device may be impaired.
Note 2: TJ is calculated from the ambient temperature TA and power dissipa�on PD according to the
following formula: TJ = TA + PD x θJA.
Figure 2. Short Circuits Response �me
Figure 3. test circuits
Note:
To exactly iden�fy the short circuit characteris�c of IC, avoid the test result interfered by parasi�c inductor,
output capacitor, and contact resistor. It is necessary to follow the recommenda�on as follows.
1. Add 1000μF of capacitor between VIN and GND, and close to IC.
2. Remove output capacitor.
3. Shorter the short circuit device wire.
4. Measure output current (IOUT).
2021. 01. 11
Revision No : 0
5/11
FC6261
FUNCTIONAL BLOCK DIAGRAM
Voffset
- +
Reverse voltage
comparator
OUT
IN
RDIS
Current
Limit
PMOS Gate Control
EN
nFLG
FC6261B1 only
UVLO
OTP
GND
Figure 4. FC6261 Block Diagram
2021. 01. 11
Revision No : 0
6/11
FC6261
TYPICAL PERFORMANCE CHARACTERISTICS
FC6261A characteris�c
Over current Protection Characteris�cs
Turn on Delay Time and Rise Time
Overcurrent Rrotec�on Characteris�cs
6
5
4
3
2
1
0
0
0.5
1
1 5
Iout(A)
CH2:EN CH3:VOUT 1mS/div
Turn off Delay Time and Fall Time
Resistance Load Inrush Response
CH2:EN CH3:VOUT 400uS/div
CH2:VOUT CH3:VIN CH4:IOUT 200uS/div
Over current Response
CH2:VOUT CH3:EN CH4:IOUT 200uS/div
2021. 01. 11
Revision No : 0
7/11
FC6261
APPLICATION INFORMATION
The FC6261 Series is current-limited,power distribu�on switches using P-channel MOSFETs.Addi�onal device
shutdown features include over temperature protec�on and reverse-voltage protec�on. The driver controls
the gate voltage of the power switch. The driver incorporates circuitry that controls the rise and fall �mes of
the output voltage to limit large current and voltage surges and provides built-in soꢀ-start func�onality. The
FC6261 Series enters constant current mode when the load exceeds the current-limit threshold.
Input and Output
IN (input) is the power supply connec�on to the logic circuitry and the drain of the output MOSFET. OUT
(output) is the source of the output MOSFET. In a typical applica�on, current flows through the switch from
IN to OUT toward the load. OUT pin must be connected together to the load.
So� Start for Hot Plug-In Applicaꢀons
In order to eliminate the upstream voltage droop caused by the large inrush current during hot-plug events,
the “soꢀ-start” feature effec�vely isolates the power source from extremely large capaci�ve loads, sa�sfying
the USB voltage droop requirements.
FLG Funcꢀon
The nFLG open-drain output is asserted (ac�ve low) when an over current condi�on is encountered aꢀer a
8ms deglitch �meout. The nFLG output remains asserted un�l the over-current condi�on is removed. Over
temperature condi�on is also reported by nFLG open-drain output. In addi�on, nFLG is also asserted (ac�ve
low) in output reverse-voltage condi�on when the output reverse-voltage condi�on is removed.
Thermal Shutdown
The FC6261 Series has internal over temperature protec�on to shut down the device when its
junc�on temperature exceeds 150°C with over load current condi�on, then aꢀer the device is disabled,
if the junc�on temperature drops 20°C hysteresis typically the device will resume and restart to work.
The switch con�nues to cycle off and on un�l the over current fault is removed.
EN, the Enable Input
EN must be driven logic high or logic low for a clearly defined input. Floa�ng the input may cause
unpredictable opera�on, so please do not float EN input pin.
Output Auto Discharge
Only for FC6261B1, when its EN is disabled, an internal typical 42Ω resister is connected between OUT and
GND to discharge output capacitor COUT
.
Layout Consideraꢀon
For best performance of the FC6261 Series, the following guidelines must be strictly followed.
1) Input and output capacitors should be placed close to the IC and connected to ground plane to reduce
noise coupling.
2) The GND should be connected to a strong ground plane for heat sink.
3) Keep the main current traces as possible as short and wide.
2021. 01. 11
Revision No : 0
8/11
FC6261
PACKAGE INFORMATION
SOT-23-6
Note:
1) All dimensions are in millimeters.
2) Package length does not include mold flash, protrusion or gate burr.
3) Package width does not include inter lead flash or protrusion.
4) Lead popularity (bo�om of leads aꢀer forming) shall be 0.10 millimeters max.
5) Pin 1 is lower leꢀ pin when reading top mark from leꢀ to right.
2021. 01. 11
Revision No : 0
9/11
FC6261
PACKAGE INFORMATION
SOT-23-5
Unit: mm
Dimensions In Millimeters
Dimensions In Millimeters
Symbol
Symbol
Min
2.82
1.50
0.90
2.60
1.80
Max
3.02
1.70
1.30
3.00
2.00
Min
0.85
0.35
0.10
0.35
0
Max
1.05
0.50
0.20
0.55
0.15
L
B
E1
a
C
c
L1
E
b
F
Note:
1) All dimensions are in millimeters.
2) Package length does not include mold flash, protrusion or gate burr.
3) Package width does not include inter lead flash or protrusion.
4) Lead popularity (bo�om of leads aꢀer forming) shall be 0.10 millimeters max.
5) Pin 1 is lower leꢀ pin when reading top mark from leꢀ to right.
2021. 01. 11
Revision No : 0
10/11
FC6261
TAPE AND REEL INFORMATION
TAPE DIMENSIONS:
REEL DIMENSIONS:
Note:
1) All Dimensions are in Millimeter
2) Quan�ty of Units per Reel is 3000
3) MSL level is level 3.
2021. 01. 11
Revision No : 0
11/11
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