AIC AIC1526-1CN

AIC1526
Dual USB High-Side Power Switch
FEATURES
DESCRIPTION
• 110mΩ (5V Input) High-Side MOSFET Switch.
The AIC1526 is a dual high-side power switch
500mA Continuous Load Current per Channel.
for self-powered and bus-powered Universal
110µA Typical On-State Supply Current.
Serial Bus (USB) applications. One high-side
1µA Typical Off-State Supply Current.
switch is a MOSFET with 110mΩ RDS(ON), which
Current-Limit / Short Circuit Protection.
meets USB voltage drop requirements for
Thermal Shutdown Protection under Overcurrent
maximum transmission wire length.
Condition.
Multi-purpose
Undervoltage Lockout Ensures that Switch is off at
indicates
Start Up.
shutdown, or undervoltage lockout for each
Output can be Forced Higher than Input (OffState).
Open-Drain Fault Flag.
Slow Turn ON and Fast Turn OFF.
Enable Active-High or Active-Low.
open-drain
fault
over-current
flag
limiting,
output
thermal
channel. Output current is typically limited to 1A,
well below the 5A safety requirement, and the
thermal
shutdown
controls
each
function
channel
independently
under
overcurrent
condition.
Guaranteed minimum output rise time limits
inrush current during hot plug-in, minimizing
APPLICATIONS
EMI and preventing the voltage at upstream port
from dropping excessively.
USB Power Management.
Hot Plug-In Power Supplies.
Battery-Charger Circuit.
Analog Integrations Corporation
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
DS-1526-00
TEL: 886-3-5772500
FAX: 886-3-5772510
www.analog.com.tw
1
AIC1526
TYPICAL APPLICATION CIRCUIT
VCC
5.0V
+
10K
33µF
4.50V to 5.25V
Upstream VBUS
100mA max
10K
AIC1722
VBUS
IN
D+
+
DGND
USB Controller
OUT
10µF
COUT
GND
ON/OFF
CTLA
OUTA
OVERCURRENT
FLGA
IN
OVERCURRENT
FLGB
GND
VIN
+
1µF
CIN
Ferrite
Bead
AIC1526
ON/
VBUS
0.1µF
+
33µF
*
D+
0.01µF
DGND
CTLB OUTB
GND
DATA
DATA
*
33µF, 16V Tantalum, or
100µF, 10V Electrolytic
Bold line indicate high- current traces
+
VBUS
33µF
*
D+
0.01µF
DGND
DATA
Two-Port Self-Powered Hub
ORDERING INFORMATION
ORDER NUMBER
AIC1526-XXX
PACKAGE TYPE
N: PLASTIC DIP
S: SMALL OUTLINE
AIC1526-0CN
AIC1526-1CN
(PLASTIC DIP)
TEMPERATURE RANGE
C: 0°C~+70°C
CONTROL POLARITY
0: ACTIVE LOW
1: ACTIVE HIGH
AIC1526-0CS
AIC1526-1CS
(PLASTIC SO)
PIN CONFIGURATION
TOP VIEW
CTLA 1
FLGA 2
8 OUTA
7 IN
FLGB 3
6 GND
CTLB 4
5 OUTB
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VIN)
.......................................................………….......……........... 7.0V
Fault Flag Voltage (VFLG) ........................................................………………….......... 7.0V
Fault Flag Current (IFLG)
Control Input (VCTL)
...................……….....................………....................... 50mA
......................................................……………........…. -0.3V ~15V
Operating Temperature Range
........…...............…………………..................-20°C~80°C
Storage Temperature Range
....................................……….................. -65°C ~ 150°C
2
AIC1526
TEST CIRCUIT
VCC
+5V
10K R1
10K R2
ON
10Ω
CTLA
OUTA
FLGA
IN
R4
OFF
0.1µF
C1
FLGB
GND
CTLB
OUTB
10Ω
ON
AIC1526
OFF
ELECTRICAL CHARACTERISTICS (V
IN=
PARAMETERS
Supply Current
Control Input Voltage
Control Input Current
R4
5V, Ta=25°°C, unless otherwise specified.)
CONDITIONS
MIN.
TYP.
MAX.
VCTL =Logic “0” , OUT=Open
0.75
5
VCTL =Logic “1” , OUT=Open
110
160
VCTL =Logic “0”
VCTL =Logic “1”
0.8
2.4
VCTL =Logic “0”
0.01
1
VCTL =Logic “1”
0.01
1
Control Input Capacitance
1
Output MOSFET Resistance
110
UNIT
µA
V
µA
pF
150
mΩ
µS
Output Turn-On Rise Delay
RL = 10Ω each Output
100
Output Turn-On Rise Time
RL = 10Ω each Output
1000
2500
µS
Output Turn-Off Delay
RL = 10Ω each Output
0.8
20
µS
Output Turn-Off Fall Time
RL = 10Ω each Output
0.7
20
µS
10
µA
1.25
A
Output Leakage Current
Current Limit Threshold
0.6
1.0
°C
Overtemperature Shutdown
TJ Increasing
135
Threshold
TJ Decreasing
125
Error Flag Output Resistance
VIN = 5V , IL =10 mA
10
25
VIN = 3.3V , IL =10mA
15
40
Error Flag Off Current
VFLG = 5V
0.01
1
UVLO Threshold
VIN Increasing
2.6
VIN Decreasing
2.4
Ω
µA
V
3
AIC1526
BLOCK DIAGRAM
OUTA
DRIVER
CTLA
CURRENT
LIMIT
CHARGE PUMP
THERMAL
SHUTDOWN
CS
POWER N-MOSFET
FLGA
UVLO
CURRENT
LIMIT
CHARGE PUMP
CS
CTLB
FLGB
DRIVER
POWER N-MOSFET
IN
OUTB
TYPICAL
PERFORMANCE CHARACTERISTICS
Output On Resistance vs. Temperature
150
116
140
114
ON Resistance (m Ω)
ON Resistance (m Ω)
ON Resistance vs. Supply Voltage
118
130
RL=47Ω
T=25°C
112
120
110
RL=47Ω
T=25°C
110
108
100
106
90
104
3.0
3.5
4.0
4.5
Supply Voltage (V)
5.0
5.5
80
-40
-20
0
20
40
60
80
100
Temperature (°C)
4
AIC1526
TYPICAL
PERFORMANCE CHARACTERISTICS (Continued)
160
2.8
140
Supply Current (µA)
Threshold Voltage (V)
UVLO Threshold Voltage vs. Temperature
3.0
Rising
2.6
Falling
2.4
2.2
2.0
-40
ON State Supply Current vs. Supply Voltage
120
100
Both Switches ON
80
60
-20
0
20
40
Temperature (°C)
60
80
3
100
120
0.08
110
Both Switches ON
100
90
0
20
40
6
7
8
OFF State Current vs. Temperature
0.10
Supply Current (µA)
Supply Current (µA)
OFF State Current vs. Temperature
-20
5
Supply Voltage (V)
130
80
-40
4
60
80
0.06
Both Switches OFF
0.04
0.02
0
100
-40
-20
0
Temperature (°C)
20
40
60
80
100
Temperature (°C)
OFF State Current vs. Supply Voltage
Control Threshold vs. Supply Voltage
0.10
1.7
1.6
Enable voltage
Supply Current (µA)
0.08
0.06
Both Switches
0.04
VEN Rising
1.5
1.4
1.3
VEN Falling
1.2
0.02
1.1
0
3
4
5
6
Supply Voltage (V)
7
8
1.0
3.0
3.5
4.0
4.5
5.0
5.5
Supply Voltage (V)
5
AIC1526
TYPICAL
PERFORMANCE CHARACTERISTICS (Continued)
Turn-On, Turn-Off Characteristics
Control (V)
6
4
2
0
Outpu (V)
5
3
RL=47Ω
1
-1
0.0
0.5
1.0
1.5
2.0
2.5
Time (mS)
PIN DESCRIPTION
PIN 1: CTLA - TTL compatible control input. It
controls the turn-on/turn-off of
channel A MOSFET. Active high
for AIC1526-1 and active low for
AIC1526-0.
PIN 4: CTLB - TTL compatible control input.
It controls the turn-on/turn-off
of channel B MOSFET. Active
High for AIC1526-1 and active
low for AIC1526-0.
PIN 2: FLGA - An active-low and open-drained
fault flag output for channel A. It
can indicate current limit if CTLA
is active. In normal mode
operation (CTLA or/and CLTB is
active), it also can indicate
thermal
shutdown
or
undervoltage.
PIN 5: OUTB - Channel B MOSFET switch
output.
PIN 6: GND
- Chip power ground.
PIN 7: IN
- Power supply input.
PIN 8: OUTA - Channel
output.
A
MOSFET
switch
PIN 3: FLGB - An active-low and opendrained fault flag output for
channel B. It can indicate
current limit if CTLB is active.
In normal mode operation
(CTLB or/and CLTA is active),
it also can indicate thermal
shutdown or undervoltage.
6
AIC1526
APPLICATION INFORMATION
Error Flag
An
the case of overcurrent fault.
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.
or
the
device,
is
strongly
Without a bypass capacitor, an output short may
protects the output MOSFET switches from
conditions
near
recommended to control supply transients.
The current limit threshold is preset internally. It
due
A 0.1µF to 1µF bypass capacitor from IN to GND,
located
Current Limit
damage
Supply Filtering
to
undesirable
excess
short
inrush current
circuit
cause sufficient ringing on the input (from supply
lead inductance) to damage internal control
circuitry.
often
encountered during hot plug-in. The low limit of
Transient Droop Requirements
the current limit threshold of the AIC1526 allows
USB support dynamic attachment (hot plug-in) of
a minimum current of 0.5A through the MOSFET
peripherals. A current surge is caused by the
switches. A current limit condition will signal the
input capacitance of downstream device. Ferrite
error flag.
beads are recommended in series with all power
and ground connector pins. Ferrite beads reduce
Thermal Shutdown
When the chip temperature exceeds 135°C for
EMI and limit the inrush current during hotattachment by filtering high-frequency signals.
any reason other than overcurrent fault of either
one of the two MOSFET switches, the thermal
Short Circuit Transient
shutdown function turns off both MOSFET
Bulk
switches and signal the error flag. A hysteresis of
transient current needed during a hot-attachment
10°C prevents the MOSFETs from turning back
event. With a 33µF, 16V tantalum or 100µF, 10V
on until the chip temperature drops to below
electrolytic
125°C. However, if thermal shutdown is triggered
downstream connector per port should provide
by chip temperature rise due to overcurrent fault
transient drop protection.
capacitance
provides
capacitor
the
mounted
short-term
close
to
condition of either one of the MOSFET switches,
the thermal shutdown function will only turn off
Printed Circuit Layout
the switch that is in overcurrent condition and the
The power circuitry of USB printed circuit boards
other switch can still remain its normal operation.
requires a customized layout to maximize
In other words, the thermal shutdown function of
thermal dissipation and to minimize voltage drop
the two switches is independent of each other in
and EMI.
7
AIC1526
PHYSICAL DIMENSION
8 LEAD PLASTIC SO (unit: mm)
D
SYMBOL
A
A1
B
C
D
E
e
H
L
H
E
e
A
A1
C
B
MIN
MAX
1.35
1.75
0.10
0.25
0.33
0.51
0.19
0.25
4.80
5.00
3.80
4.00
1.27(TYP)
5.80
6.20
0.40
1.27
L
8 LEAD PLASTIC DIP (unit: mm)
D
E1
E
A2
A1
C
L
eB
b
e
SYMBOL
A1
A2
b
C
D
E
E1
e
eB
L
MIN
MAX
0.381
—
2.92
4.96
0.35
0.56
0.20
0.36
9.01
10.16
7.62
8.26
6.09
7.12
2.54 (TYP)
—
10.92
2.92
3.81
8