FP6862BSOGTR [FITIPOWER]
Dual-Channel USB High-Side Power Switch;
| 型号： | FP6862BSOGTR |
| 厂家： | 
Fitipower |
| 描述： | Dual-Channel USB High-Side Power Switch |
| 文件： | 总11页 (文件大小：690K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
fitipower integrated technology lnc.
Dual-Channel USB
High-Side Power Switch
Description
Features
The FP6862 is dual high-side MOSFET switches
with independent enable and error flag functions,
optimized for general-purpose power distribution and
Universal Serial Bus (USB) requiring circuit
protection.
● 100mΩ (5V Input) On-Resistance Per Channel
● 2.7V to 5.5V Operating Range
● 1A Minimum Continuous Current Per Channel
● Short Circuit Protection with Thermal Shutdown
● Thermally Isolated Channels
● Under Voltage Lockout (UVLO)
● Reverse Current Flow Blocking
● Soft-Start Circuit
● Enable Active Low or Active High
● RoHS Compliant
The FP6862 supports the following USB
requirements: each switch channel supplies up to 1A
as required by USB downstream devices; the low on-
resistance switch meets the USB voltage drop
requirements.
Both switches employ soft-start circuit that minimizes
inrush current in applications where highly capacitive
loads are employed.
Applications
● USB Peripheral
● General Purpose Power Switching
● ACPI Power Distribution
● Notebook PC
A fault status output flag is asserted during over-
current, thermal shutdown or UVLO conditions.
Under voltage lockout (UVLO) to ensure that the
device remains off unless there is a valid input
voltage present and 3.3V or 5V logic compatible
enable single inputs.
● PDA
● PC Card Hot Swap
Pin Assignments
Ordering Information
FP6862□□□□
SO Package (SOP-8)
TR: Tape/Reel
8
7
6
5
1
2
ENA
FLGA
FLGB
OUTA
IN
P: Green
G: Green
3
4
GND
OUTB
Package Type
SO: SOP-8
ENB
A: Active Low Enable
B: Active High Enable
Figure 1. Pin Assignment of FP6862
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Typical Application Circuit
VCC
2.7V to 5.5V
VCONT
10K
10K
Logic Controller
FP6862
VIN
ON/OFF
Load
10µF
ENA
OUTA
OVERCURRENT
FLGA
FLGB
ENB
IN
GND
0.1µF
OVERCURRENT
ON/OFF
Load
10µF
OUTB
Figure 2. Typical Application Circuit of FP6862
Functional Pin Description
Pin Name
Pin No.
Pin Function
ENA
1
2
3
4
5
6
7
8
Switch A Enable (Input): Logic-compatible, enable input. Active high or active low.
FLGA
FLGB
ENB
Fault Flag A (Output): Active-low, open-drain output. Indicates UVLO, over current or thermal shutdown.
Fault Flag B (Output): Active-low, open-drain output. Indicates UVLO, over current or thermal shutdown.
Switch B Enable (Input): Logic-compatible, enable input. Active high or active low.
OUTB
GND
Switch B (Output).
Ground.
IN
Switch and IC Power Input.
Switch A (Output).
OUTA
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Block Diagram
FLGA
OUTA
ENA
CHARGE
PUMP
GATE
CONTROL
CURRENT
LIMIT
THERMAL
SHUTDOWN
REFERENCE
IN
OSC.
UVLO
CURRENT
LIMIT
GATE
CHARGE
PUMP
CONTROL
ENB
OUTB
FLGB
GND
Figure 3. Block Diagram of FP6862
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Absolute Maximum Ratings
● Supply Voltage (IN) --------------------------------------------------------------------------------------------- -0.3V to +6V
● Fault Flag Voltage (FLG) -------------------------------------------------------------------------------------- +6V
● Fault Flag Current (IFLG) --------------------------------------------------------------------------------------- 25mA
● Output Voltage (OUT) ----------------------------------------------------------------------------------------- +6V
● Output Current (IOUT) ------------------------------------------------------------------------------------------- Internal Limited
● Enable Input (EN) ----------------------------------------------------------------------------------------------- -0.3V to +6V
● Power dissipation @TA=25°C, (PD)
SOP-8 ------------------------------------------------------------------------------------------------- 0.63W
● Package Thermal Resistance, (θJA)
SOP-8 ------------------------------------------------------------------------------------------------- 160°C/W
● Maximum Junction Temperature (TJ) ---------------------------------------------------------------------- +150°C
● Storage Temperature Range (TSTG) ------------------------------------------------------------------------ -65°C to +130°C
● Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------- 260°C
Note1：Stresses beyond those listed under “Absolute Maximum Ratings" may cause permanent damage to the device.
Recommended Operating Conditions
● Supply Voltage (VIN) -------------------------------------------------------------------------------------------- +2.7V to +5.5V
● Operation Temperature Range ------------------------------------------------------------------------------ -40°C to +85°C
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Electrical Characteristics
VIN=+5V, TA=25°C, unless otherwise specified
Parameter
Symbol
Conditions
FP6862A, VENA=VENB<0.3V
FP6862B, VENA=VENB>1.1V
FP6862A, VENA=VENB>1.1V
FP6862B, VENA=VENB<0.3V
VEN=Logic “0”
Min
Typ
Max
Unit
Supply Current
IDD
110
160
µA
Shutdown Current
ISD
0.75
5
µA
V
0.3
Enable Input Threshold
Enable Input Current
VEN
VEN=Logic “1”
1.1
-1
IEN
CEN
RDS-ON
ILEAK
TON
VEN=0 to 5.5V
0.01
1
1
µA
pF
mΩ
µA
µs
ms
µs
µs
A
Enable Input Capacitance
(Note3)
Switch Resistance (Note3)
Output Leakage Current
RL=10Ω
100
150
10
Output Turn-on Delay Time
(Note3)
Output Turn-on Rise Time
(Note3)
Output Turn-off Delay Time
(Note3)
Output Turn-off Fall Time
(Note3)
RL=10Ω, CL=1µF (Fig.6)
RL=10Ω, CL=1µF (Fig.6)
RL=10Ω, CL=1µF (Fig.6)
RL=10Ω, CL = 1µF (Fig.6)
Each channel
100
1.0
0.8
0.8
TR
2.5
20
20
TOFF
TF
IOUT
ILIMIT
Continuous Load Current
Current Limit Threshold
1
Ramped load applied to output
(Fig.7)
1.1
1.6
2.5
2.1
A
VIN Rising
Under Voltage Lockout
Threshold
VUVLO
V
VIN Falling
2.3
VIN = 5V, IL=10mA
VIN = 3.3V, IL=10mA
VFLG=5V
20
40
50
1
Error Flag Output Resistance
(Note3)
RFLAG
Ω
25
Error Flag Off Current
ILEAKAGE
0.01
140
120
160
150
µA
Tj increasing, each channel
Tj decreasing, each channel
Tj increasing, both channels
Tj decreasing, both channels
Over-Temperature Threshold
(Note 2,3)
TSD
°C
Note 2：If there is a over-load fault on one channel causes die reaches approximately 140°C, that channel will shutdown. If the die
reaches approximately 160°C, both channels will shutdown.
Note3：Guarantee by design.
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Timing Diagrams
EN
EN
90%
10%
TF
90%
90%
90%
OUT
OUT
10%
TR
10%
10%
TR
TF
TON
TOFF
TON
TOFF
Figure 4. Active Low Version (FP6862A)
Switch On/Off timing Diagram
Figure 5. Active High Version (FP6862B)
Switch On/Off timing diagram
Test Circuit
FP6862
FP6862
OUT
OUT
CL
RL
CL
CL
RL = 2Ω
Figure 6. Turn-on/off Test Circuit
Figure 7. Step to Current Limit Test Circuit
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Typical Performance Characteristics
5
4
3
2
1
0
120
TA= 25OC
100
80
60
40
20
0
Both Switches on
UVLO Threshold
Both Switches OFF
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Supply Voltage (V)
Supply Voltage (V)
Figure 8. On-State Supply Current vs. Supply Voltage
Figure 9. Off-State Supply Current vs. Supply Voltage
140
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
130
120
VIN=5V
110
VIN=3.3V
100
90
80
70
-40
-20
0
20
40
60
80
-40
-20
0
20
40
60
80
100
Temperature(oC)
Temperature (oC)
Figure 10. On Resistance vs. Temperature
Figure 11. Current Limit Threshold vs. Temperature
130
125
2.6
Both Switches On
2.5
2.4
2.3
2.2
2.1
2.0
Rising
Falling
120
VIN=5V
115
110
105
100
95
VIN=3.3V
90
85
80
-40
-20
0
20
40
60
80
100
-40
-20
0
20
40
60
80
100
Temperature (oC)
Temperature (oC)
Figure 12. UVLO Threshold Voltage vs. Temperature
Figure 13. Supply Current vs. Temperature
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Typical Performance Characteristics (Continued)
Figure 14. CHA,CHB Turn-on and Turn-off Synchronously
Figure 15. CHA Turn-on, CHB Turn-on and Turn off
Figure 16. UVLO - VIN Rising
Figure 17. UVLO – VIN Falling
Figure 18. Enable to Current Limit (RL = 2Ω)
Figure 19. Independent Current limit (Step to current limit)
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Typical Performance Characteristics (Continued)
Figure 20. Independent Thermal Shutdown
Figure 21. Inrush Current Response
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Application Information
The FP6862 is a dual, current-limited switch
designed for USB applications. It has two
Supply Filtering
A 0.1μF to 1µF bypass capacitor positioned close to
VIN and GND of the FP6862 is strongly
recommended to control supply transients.
Without a bypass capacitor, an output short may
cause sufficient ringing on the input to damage
internal control circuitry.
independent switches, each with its own enable
control input. Each switch has an error-flag output
to notify the USB controller when the current-limit,
short-circuit, under voltage lockout (UVLO) or
thermal shutdown occurs.
The FP6862 operates from 2.7V to 5.5V input
voltage range and guarantees a minimum 1A output
Error Flag
current.
Independent current-limit and thermal
An error flag is an open-drain output of an N-
channel MOS. Flag output is pulled low to signal
the following fault conditions: Supply voltage under
UVLO threshold voltage, current limit, short circuit
or thermal shutdown.
shutdown circuits permit each switch to operate
independently, improving system robustness.
UVLO and Input-Voltage Requirement
Under Voltage Lockout (UVLO) circuit prevents the
output switch from turning on until input voltage
exceeds approximately 2.5V.
Current Limit
The current limit threshold is preset internally. It
protects the output switch from damage due to
undesirable short circuit conditions or excess inrush
current often encountered during hot plug-in.
Reverse Current Blocking
The USB specification does not allow an output
device to source current back into the USB port.
However, the FP6862 are designed to safely power
noncompliant devices. When disable, each output is
switched to a high-impedance state, blocking
reverse current flow from the output back to the
input. The switch is bi-directional when enable.
Thermal Shutdown
Thermal shutdown is employed to protect the
device from damage when the die temperature
exceeds safe margins mainly due to short-circuit
or current-limit. FP6862 features independent
thermal shutdown for each switch channel,
allowing one switch to deliver power even if the
Error Flag
The FP6862 provides an open drain error flag output
for each switch. For most applications, connect
FLG and IN through a 10kΩ pull-up resistor. FLG
goes low when any following conditions occur:
1. The input voltage is below the UVLO threshold.
2. The thermal shutdown occurs.
other switch has a fault condition.
Thermal
shutdown shuts off the output switch which in
current-limit or short-circuit and asserts the FLG
output if the die temperature reaches 140°C and
the other channel is not affected. However, if the
die temperature exceeds 160°C, both channels
will be shut off.
3. The switch is in current-limit and short-circuit
conditions.
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Outline Information
SOP-8 Package (Unit: mm)
DIMENSION IN MILLIMETER
SYMBOLS
UNIT
MIN
1.35
0.10
1.25
0.31
4.80
3.80
1.20
5.80
0.40
MAX
1.75
0.25
1.50
0.51
5.00
4.00
1.34
6.20
1.27
A
A1
A2
B
D
E
e
H
L
Note：Followed From JEDEC MO-012-E.
Carrier Dimensions
Life Support Policy
Fitipower’s products are not authorized for use as critical components in life support devices or other medical systems.
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