Page 1
®
1
2
3
4
5
6
7
8
SP2526A
8 Pin NSIOC
OUTA
IN
OUTB
GND
ENA
FLGA
FLGB
ENB
SP2526A
Dual USB High-Side Power Switch
FEATURES
■ +3.0V to +5.5V Input Voltage Range
■ Two Independent Power Switches
■ Two Error Flag Outputs, Open Drain
■ 2.6V Undervoltage Lockout
■ 1.25A Short Circuit Current Limit
■ 150mΩ Maximum On-Resistance
■ 110µA On-State Supply Current
■ 1µA Shutdown Current
■ Output Can Be Forced Higher Than
Input (Off-State)
■ Thermal Shutdown
■ 1ms Soft-Start Power Up, Fast Turn Off
The SP2526A device is a dual +3.0V to +5.5V USB Supervisory Power Control Switch ideal
for self-powered and bus-powered Universal Serial Bus (USB) applications. Each switch has
low on-resistance (110mΩ typical) and can supply 500mA minimum. The fault currents are
limited to 1.0A typical and the flag output pin for each switch is available to indicate fault
conditions to the USB controller. The thermal shutdown feature will prevent damage to the
device when subjected to excessive current loads. The undervoltage lockout feature will
ensure that the device will remain off unless there is a valid input voltage present.
Now Available in Lead Free Packaging
■ Active-High Version: SP2526A-1
■ Active-Low Version: SP2526A-2
APPLICATIONS
■ USB Power Management
■ Hot Plug-In Power Supplies
■ Battery Charger Circuit
DESCRIPTION
TYPICAL APPLICATION CIRCUIT
VCC
5.0V
+33µF
+
10K
4.50V TO 5.25V
UPSTREAM VBUS
100mA MAX
VBUS
D+
D-
GND
DATA
Two Port Self Powered Hub
Date: 1/4/06 SP2526A Dual USB High-Side Power Switch © Copyright 2006 Sipex Corporation
+ 1µF
Cin
SPX1521
IN
GND
OUT
+
10µF
Cout
10K
USB CONTROLLER
VIN
OVERCURRENT
OVERCURRENT
GND
33µF, 16V Tantalum, or
100µF, 10V Electrolytic
*
Bold line indicate high-current traces
ON/OFF
SP2526A
DATA
DATA
VBUS
D+
D-
GND
VBUS
D+
D-
GND
OUTA
ENA
IN
FLGA
GND
FLGB
OUTB
ON
ENB
0.1µF
Ferrite Bead
+
*
Ferrite Bead
+
*
33µF
Ferrite Bead
33µF
Ferrite Bead
0.01 µF
0.01 µF
1
Page 2
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of the device at these ratings or any other above those indicated
in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions
for extended periods of time may affect reliability.
Supply Voltage(VIN)..........................................7.0V
Fault Flag Voltage (V
Fault Flag Current (I
)..................................7.0V
FLG
)..................................50mA
FLG
Enable Control Input (VEN).....................-0.3V -15V
Operating Temperature Range.............-40˚C to +85˚C
Maximum Junction Temperature ........................125˚C
Storage Temperature Range..............-65˚C to +150˚C
Soldering Temperature (10 sec.).........................260˚C
Power Dissipation Per Package
8-pin NSOIC (derate 6.14mW/OC above +70OC)..........500mW
ELECTRICAL CHARACTERISTICS
Unless otherwise noted, the following specifications apply for VIN = +5.0V, TA = 25°C.
RETEMARAP.NIM.PYT.XAMSTINUSNOITIDNOC
tnerruCylppuS57.0
egatloVtupnIelbanE
tnerruCtupnIelbanE10.0
ecnaticapaCtupnIelbanE1Fp
ecnatsiseRtefsoMtuptuO011051mΩ
yaleDnO-nruTtuptuO001
emiTesiRnO-nruTtuptuO00010004
yaleDffO-nruTtuptuO8.002
emiTllaFffO-nruTtuptuO7.002
tnerruCegakaeLtuptuO01
dlohserhTtimiLtnerruC6.00.152.1A
nwodtuhSerutarepmeT-revO
dlohserhT
ecnatsiseRtuptuOgalFrorrE01
tnerruCffOgalFrorrE10.01µAV
dlohserhTOLVU6.2
8.0
51
011
7.1
0.2
10.0
531
521
4.2
0.5
µA
061
4.2V
1
µA
1
µs
µs
µs
µs
µA
O
C
52
Ω
04
V
V
NE
V
NE
V
NE
V
NE
V
NE
V
NE
01= Ω tuptuohcae
R
L
RL01= Ω tuptuohcae
01= Ω tuptuohcae
R
L
RL01= Ω tuptuohcae
T
J
T
J
V
NI
V
NI
GALF
V
NI
V
NI
nepO=TUO"0"cigoL=
nepO=TUO"1"cigoL=
"0"cigoL=
"1"cigoL=
"0"cigoL=
"1"cigoL=
gnisaercni
gnisaerced
I,V5=
Am01=
L
I,V3.3=
Am01=
L
V5=
gnisaercni
gnisaerced
Date: 1/4/06 SP2526A Dual USB High-Side Power Switch © Copyright 2006 Sipex Corporation
2
Page 3
rebmuNniPemaNniPnoitpircseD
1ANE ehtrofhgihevitcasiniptupnisihT.AhctiwSTEFSOMroftupnIelbanE
2AGLF etacidninactI.Alennahctoftuptuogalftluafdeniard-nepodnawol-evitcanA
3BGLF etacidninactI.Blennahctoftuptuogalftluafdeniard-nepodnawol-evitcanA
4BNE ehtrofhgihevitcasiniptupnisihT.BhctiwSTEFSOMroftupnIelbanE
5BTUO TEFSOMehtfoniptuptuoehtsisihT.BlennahChctiwSTEFSOMroftuptuO
6DNG.dnuorG
7NItupniylppusrewoP
8ATUO TEFSOMehtfoniptuptuoehtsisihT.AlennahChctiwSTEFSOMroftuptuO
PIN DESCRIPTION
2-A6252PSehtrofwolevitcadna1-A6252PS
BNEdna/roANE(noitarepoedomlamronnI.evitcasiANEnehwtimiltnerruc
.egatlovrednuronwoduhslamrehtetacidninacoslati,)evitcasi
BNEdna/roANE(noitarepoedomlamronnI.evitcasiBNEnehwtimiltnerruc
.egatlovrednuronwoduhslamrehtetacidninacoslati,)evitcasi
2-A6252PSehtrofwolevitcadna1-A6252PS
.daolehtfoedisdehctiwsehtotdetcennocyllacipyt,Blennahcfoecruos
.daolehtfoedisdehctiwsehtotdetcennocyllacipyt,Alennahcfoecruos
TEST CIRCUIT
OFF
OFF
ON
ON
SP2526A
ENA
FLGA
FLGB
ENB
10K R1
10K R2
OUTA
IN
GND
OUTB
V
CC
+5V
0.1µF
10Ω
R4
C1
10Ω
R4
Date: 1/4/06 SP2526A Dual USB High-Side Power Switch © Copyright 2006 Sipex Corporation
3
Page 4
APPLICATION INFORMATION
Error Flag
An open-drained output of an N-channel
MOSFET, the FLG output is pulled low to
signal the following fault conditions: input
undervoltage, output current limit, and thermal
shutdown.
Current Limit
The current limit threshold is preset internally.
It protects the output MOSFET switches from
damage resulting from undesirable short circuit
conditions or excess inrush current, which is
often encountered during hot plug-in. The low
limit of the current limit threshold of the
SP2526A allows a minimum current of 0.6A
through the MOSFET switches. A current limit
condition will signal the error flag.
Thermal Shutdown
When the chip temperature exceeds 135ºC for
any reason other than overcurrent fault of either
one of the two MOSFETs, the thermal shutdown function turns off both MOSFET switches
and signals the error flag. A hysteresis of 10ºC
prevents the MOSFETs from turning back on
until the chip temperature drops below 125ºC.
However, if thermal shutdown is triggered by
chip temperature rise resulting from overcurrent
fault condition of either one of the MOSFET
switches, the thermal shutdown function will
only turn off the switch that is in overcurrent
condition and the other switch can still remain
its normal operation. In other words, the thermal shutdown function of the two switches is
independent of each other in the case of
overcurrent fault.
Supply Filtering
A 0.1µF to 1µF bypass capacitor from IN to
GND, located near the device, is strongly recommended to control supply transients. Without a
bypass capacitor, an output short may cause
sufficient ringing on the input (from supply lead
inductance) to damage internal control circuitry.
Transient Requirements
USB supports dynamic attachment (hot plug-in)
of peripherals. A current surge is caused by the
input capacitance of downstream device. Ferrite
beads are recommended in series with all power
and ground connector pins. Ferrite beads reduce
EMI and limit the inrush current during hotattachment by filtering high-frequency signals.
Short Circuit Transient
Bulk capacitance provides the short-term transient current needed during a hot-attachment event.
A 33 µF,16V tantalum or a 100µF,10V electrolytic capacitor mounted close to downstream connector each port should provide transient drop
protection
Printed Circuit Layout
The Power circuitry of USB printed circuit boards
requires a customized layout to maximize thermal dissipation and to minimize voltage drop and
EMI.
Date: 1/4/06 SP2526A Dual USB High-Side Power Switch © Copyright 2006 Sipex Corporation
4
Page 5
FLGA
BLOCK DIAGRAM
OUTA
Driver
ENA
ENB
FLGB
Charge
Pump
Thermal
Shutdown
Charge
Pump
Current
Limit
UVLO
Current
Limit
Driver
CS
Power N-MOSFET
IN
CS
Power N-MOSFET
OUTB
Date: 1/4/06 SP2526A Dual USB High-Side Power Switch © Copyright 2006 Sipex Corporation
5
Page 6
VIN = +5.0V, single MOSFET switch section, and T
R
= +25OC unless otherwise noted.
TYPICAL PERFORMANCE CHARACTERISTICS
AMB
118
116
114
112
R
= 47Ω
L
110
108
T
A
= 25ºC
On-Resistance (millohms)
106
104
2.5 3 3.5 4 4.5 5 5.5 6
Supply Voltage (V)
Figure 1. Output On-Resistance vs. Supply Voltage
3
2.8
ising
140
130
120
110
RL = 47Ω
100
90
80
Output-On-Resistance (millohms)
70
60
-40 -20 0 20 40 60 80 100
Temperature (°C)
T
A
= 25ºC
Figure 2. Output On-Resistance vs. Temperature
160
140
2.6
2.4
Falling
UVLO Threshold Voltage (V)
2.2
2
-40 -20 0 20 40 60 80 100
Temperature (°C)
Figure 3. UVLO Threshold Voltage vs. Temperature
120
Both Switches On
100
80
Enable Threshold Voltage (V)
60
34567 8
Supply Voltage (V)
Figure 4. On-state Supply Current vs. Supply Voltage
Date: 1/4/06 SP2526A Dual USB High-Side Power Switch © Copyright 2006 Sipex Corporation
6
Page 7
VIN = +5.0V, single MOSFET switch section, and T
E
S
B
= +25OC unless otherwise noted.
TYPICAL PERFORMANCE CHARACTERISTICS
AMB
130
120
µµ
µµ
µA)
110
100
Supply Current (
90
80
-40 -20 0 20 40 60 80 100
Switches Enabled
Temperature (°C)
Figure 5. On-state Supply Current vs. Temperature
0.10
0.08
0.06
µµ
µµ
µA)
0.04
oth Switches Off
0.02
Supply Current (
0.00
-40 -20 0 20 40 60 80 100
Temperature (°C)
0.10
0.08
µµ
µµ
µA)
0.06
witches Disabled
0.04
Offstate Supply Current (
0.02
0.00
-40 -20 0 20 40 60 80 100
Temperature (°C)
Figure 6. Off-state Supply Current vs. Temperature
1.7
1.6
1.5
1.4
µµ
µµ
µA)
1.3
1.2
1.1
Offstate Supply Current (
1.0
33.544.555.5
Enable Voltage Rising
nable Voltage Falling
Supply Voltage (V)
Figure 7. Off-state Supply Current vs. Supply Voltage
Figure 8. Control Threshold vs. Supply Voltage
Date: 1/4/06 SP2526A Dual USB High-Side Power Switch © Copyright 2006 Sipex Corporation
7
Page 8
VIN = +5.0V, single MOSFET switch section, and T
6
4
2
Control (V)
0
5
= +25OC unless otherwise noted.
TYPICAL PERFORMANCE CHARACTERISTICS
AMB
3
1
Output (V)
-1
0
Figure 9. Turn-on/Turn-off Characteristics
0.5
RL = 47Ω
1.0
1.5
Time (mS)
2.0
2.5
Date: 1/4/06 SP2526A Dual USB High-Side Power Switch © Copyright 2006 Sipex Corporation
8
Page 9
PACKAGE: 8 Pin NSOIC
D
D/2
SIDE VIEW
8
E1/2
E1
7
5
6
E/2
E
A2
A
A1
Seating Plane
Pin1 Designator
to be within this
INDEX AREA
(D/2 x E1/2)
1
2
4
3
(L1)
e
TOP VIEW
FRONT VIEW
b
h
h
ø1
ø2
Gauge Plane
L2
ø
Seating
L
Plane
ø1
8 Pin NSOIC JEDEC MS-012 Variation AA
SYMBOL
Dimensions in Millimeters:
Controlling Dimension
MIN NOM MAX MIN NOM MAX
A 1.35 - 1.75 0.053 - 0.069
A1 0.10 - 0.25 0.004 - 0.010
A2 1.25 - 1.65 0.049 - 0.065
b 0.31 - 0.51 0.012 - 0.020
c 0.17 - 0.25 0.007 - 0.010
E
E1
e
6.00 BSC
3.90 BSC
1.27 BSC
h 0.25 0.50 0.010 - 0.020
L 0.40 - 1.27 0.016 - 0.050
L1
L2
1.04 REF
0.25 BSC 0.010 BSC
R 0.07 - - 0.003 - R1 0.07 - - 0.003 - ø0º-8º0º - 8º
ø1 5º - 15º 5º - 15º
ø2 0º - - 0º - -
D
4.90 BSC
SIPEX Pkg Signoff Date/Rev: JL Aug16-05 / Rev A
Dimensions in Inches
Conversion Factor:
1 Inch = 25.40 mm
0.236 BSC
0.154 BSC
0.050 BSC
0.041 REF
0.193 BSC
R1
R
c
Date: 1/4/06 SP2526A Dual USB High-Side Power Switch © Copyright 2006 Sipex Corporation
9
Page 10
ORDERING INFORMATION
Part Number Temperature Range Package Types
SP2526A-1EN ................................................. -40°C to +85°C ................................................... 8-pin NSOIC
SP2526A-1EN/TR ........................................... -40°C to +85°C .................................................. 8-pin NSOIC
SP2526A-2EN ................................................. -40°C to +85°C ................................................... 8-pin NSOIC
SP2526A-2EN/TR ........................................... -40°C to +85°C .................................................. 8-pin NSOIC
Available in lead free packaging. To order add “-L” suffix to part number.
Example: SP2526A-1EN/TR = standard; SP2526A-1EN-L/TR = lead free.
/TR = Tape and Reel
Pack quantity is 2,500 for NSOIC.
Corporation
ANALOG EXCELLENCE
Sipex Corporation
Headquarters and
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the
application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others.
Date: 1/4/06 SP2526A Dual USB High-Side Power Switch © Copyright 2006 Sipex Corporation
10
Loading...