AIC AIC1521-0CS Single high-side power switch with control function Datasheet

AIC1521
Single High-Side Power Switch With Control
Function
n FEATURES
• 120mΩ (5V Input) High-Side MOSFET Switch.
l 500mA Continuous Load Current.
l 80µA Typical On-State Supply Current.
l 1µA Typical Off-State Supply Current.
l Current-Limit / Short Circuit Protection.
l Thermal Limiting Protection under Overcurrent
Condition.
l Undervoltage Lockout Ensures that Switch is off at
Start Up.
l Output can be Forced Higher than Input (Off-State).
l Slow Turn ON and Fast Turn OFF.
l Active-High or Active-Low Enable.
n DESCRIPTION
The AIC1521 is an integrated high-side power
switch for self-powered and bus-powered Universal
Serial Bus (USB) applications. The high-side
switch is a MOSFET with 120mΩ RDS(ON), which
meets USB voltage drop requirements for
maximum transmission wire length. The switch
ON/OFF is controlled by CTL pin.
Output current is typically limited to 1.0A, well
below the 5A safety requirement, and thermal
shutdown function shuts the switch off to prevent
damage under overcurrent conditions.
n APPLICATIONS
l
l
l
l
l
Guaranteed minimum output rise time limits
inrush current during hot plug-in, minimizing EMI
and preventing the voltage at upstream port from
dropping excessively.
Motherboard USB Management.
USB Power Management.
Hot Plug-In Power Supplies.
Battery-Charger Circuit.
Power Distribution Switch.
n TYPICAL APPLICATION
CIRCUIT
Ferrite Bead
AI C1521-0
VCC
5.0V
IN
+
33µ F
OUT
VBUS
+
0.1µF
CTL
GND
*33µF
D+
0 .01µ F
DGND
*33µF, 16V Tantalum, or
DATA
100µF, 10V Electrolytic
Bold line indicate high-current traces
USB High-Side Power Switch
Analog Integrations Corporation
www.analog.com.tw
DS-1520-00
Aug 18, 00
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
TEL: 886-3-5772500
FAX: 886-3-5772510
1
AIC1521
n ORDERING INFORMATION
AIC1521-XCX
ORDER NUMBER
FRONT VIEW
AIC1521-0CO
AIC1521-1CO
(MSOP8)
PACKAGING TYPE
O: MSOP
S: SO8
W: SOT-89-5
PIN CONFIGURATION
NC 1
8 NC
CTL 2
7 OUT
IN 3
CONTROL POLARITY
0: Active Low
1: Active High
6 NC
5 GND
NC 4
FRONT VIEW
AIC1521-0CS
AIC1521-1CS
(SO8)
NC 1
8 NC
CTL 2
7 OUT
IN 3
6 NC
NC 4
AIC1521-0CW
AIC1521-1CW
(SOT-89-5)
5 GND
5
FRONT VIEW
1: IN
2: GND
3: OUT
4: NC
5: CTL
1
4
2
3
n ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V IN)
.......................................................… … … … .......… … ........... 7.0V
Operating Temperature Range
Storage Temperature Range
......… … … ..............… … … … … .… ............... -40°C ~ 85°C
....................................… … … .................. -65°C ~ 150°C
n ELECTRICAL CHARACTERISTICS (V
IN=
5V, Ta=25°C, unless otherwise
specified.)
PARAMETERS
Supply Current
Control Input Voltage
CONDITIONS
MIN.
TYP.
MAX.
Switch Off, OUT=Open
0.75
2
Switch On, OUT=Open
80
100
VCTL =Logic “0”
VCTL =Logic “1”
0.8
2.4
UNIT
µA
V
VCTL =Logic “0”
0.01
1
Control Input Current
VCTL =Logic “1”
0.01
1
Output MOSFET Resistance
IOUT = 500mA
120
180
Output Turn-On Rise Delay
RL = 10Ω
30
µS
Output Turn-On Rise Time
RL = 10Ω
500
µS
Output Turn-Off Delay
RL = 10Ω
0.2
10
µA
mΩ
µS
2
AIC1521
n ELECTRICAL CHARACTERISTICS (Continued)
PARAMETERS
CONDITIONS
Output Turn-Off Fall Time
MIN.
TYP.
MAX.
UNIT
0.2
10
µS
2
µA
1.25
A
RL = 10Ω
Output Leakage Current
Current Limit Threshold
0.6
1.0
Thermal Limit
°C
110
UVLO Threshold
VIN Increasing
2.8
VIN Decreasing
2.6
V
n BLOCK DIAGRAM
Thermal
Protection
OSC.
CTL
UVLO
IN
Charge
Pump
Current
Limit
RS
GATE
NMOS
Gate Control
GND
OUT
n TYPICAL PERFORMANCE CHARACTERISTICS
On-State Supply Current vs. Supply Voltage
On-State Supply Current vs. Temperature
85
90
Supply Current (µA)
Supply Current (µA)
85
80
75
70
80
75
70
65
60
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Supply Voltage (V)
6.5
7.0
7.5
65
- 40
-20
0
20
40
60
80
100
Temperature (°C)
3
AIC1521
n TYPICAL PERFORMANCE CHARACTERISTICS
20
11.5
18
16
11.0
10.5
10.0
9.5
9.0
14
12
10
8
6
4
8.5
2
8.0
3.0
(Continued)
Off-State Supply Current vs. Temperature
12.0
Supply Current (nA)
Supply Current (nA)
Off-State Supply Current vs. Supply Voltage
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
0
7.5
-40
-20
0
20
40
60
80
100
Temperature (°C)
Supply Voltage (V)
Output On Resistance vs. Supply Voltage
Output On Resistance vs. Temperature
130
Switch On Resistance (mΩ)
Switch On Ristance (mΩ)
150
125
120
115
110
105
140
130
120
110
100
90
80
100
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
-40
-20
0
20
40
60
80
Supply Voltage (V)
Temperature (°C)
UVLO Threshold Voltage vs. Temperature
Current Limit Threshold vs. Temperature
100
3.0
2.9
1.15
Rising
Current Limit (A)
UVLO Threshold Voltage (V)
1.20
2.8
2.7
Falling
2.6
1.10
1.05
1.00
0.95
0.90
2.5
0.85
0.80
2.4
-40
-20
0
20
40
Temperature (°C)
60
80
100
-40
-20
0
20
40
60
80
100
Temperature (°C)
4
AIC1521
n TYPICAL PERFORMANCE CHARACTERISTICS
Output Rise Time vs. temperature
(Continued)
Output Fall Time vs. Temperature
300
Output Rise Time (µ S)
Output Fall Time (nS)
550
500
450
400
250
200
150
100
50
350
-40
-20
0
20
40
60
80
-40
100
-20
0
20
40
60
80
100
Temperature (°C)
Temperature (°C)
Turn On Characteristic (35Ω , Loading)
CTL Threshold Voltage vs. Supply Voltage
2.2
2.0
CTL Rising
220µF
1.8
1.6
100µF
1.4
CTL Falling
IOUT , 200mA/DIV
1.2
No Cap
1.0
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
CTL
7.5
Supply Voltage (V)
Turn On Rising Time (10Ω loading)
Turn Off Falling Time (10Ω Loading)
I OUT
200mA/DIV
200mA/DIV
IOUT
V OUT
VOUT
CTL
426µS
107nS
CTL
5
AIC1521
n TYPICAL PERFORMANCE CHARACTERISTICS
Turn On Characteristic (35Ω, 100µF Loading)
(Continued)
Turn Off Falling Time (35Ω, 100uF Loading)
IOUT
500mA/DIV
500mA/DIV
IOUT
VOUT
VOUT
CTL
CTL
Current Limit Threshold
Thermal Limiting Transient Response
VOUT
VOUT
1.2A
1A
I OUT
I OUT
Thermal limit (2Ω) loading)
500mA/DIV
500mA/DIV
Short Circuit Testing
Short Circuit Response Time
Short
VOUT
Thermal Oscillation
I OUT
I OUT
1A/DIV
500mA/DIV
V OUT
6
AIC1521
n PIN DESCRIPTION
MSOP8, SO8
SOT89-5
PIN 1/4/6/8: NC:
PIN 1: IN
- Power supply input.
PIN 2: GND
- Chip power ground.
PIN 3: OUT
- MOSFET switch output.
PIN 2: CTL
- TTL compatible control input. It
controls the power switch turnon/turn-off.
Active High for
AIC1521-1 and active low for
AIC1521-0.
PIN 3: IN-
Power supply input.
PIN 4: GND-
Chip power ground.
PIN 4: NC
PIN 5: CTL
PN 7: OUT- MOSFET switch output.
n APPLICATION INFORMATIONS
l Current Limit
l
l
l
Supply Filtering
A 0.1uF to 1uF 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.
Short Circuit Transient
Bulk capacitance provides the short-term transient
current needed during a hot-attachment event. With
a 33uF, 16V tantalum or 100uF, 10V electrolytic
capacitor mounted close to downstream connector
should provide transient drop protection.
When the chip temperature exceeds 110°C, the
thermal protection function works.
l
Transient Droop Requirements
USB support 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 hot-attachment
by filtering high-frequency signals.
The current limit threshold is preset internally. It
protects the output MOSFET switches from
damage due to undesirable short circuit
conditions or excess inrush current often
encountered during hot plug-in. The AIC1521
allows minimum 500mA continuous load current
per Channel.
l Thermal Protection
- TTL compatible control input. It
controls the power switch turnon/turn-off.
Active High for
AIC1521-1 and active low for
AIC1521-0.
l
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.
7
AIC1521
■ PHYSICAL DIMENSIONS
l
MSOP 8 (unit: mm)
D
H
E
e
SYMBOL
MIN
MAX
A
0.76
0.97
A1
--
0.20
B
0.28
0.38
C
0.13
0.23
D
2.90
3.10
E
2.90
3.10
e
A
A1
C
B
H
4.80
5.00
L
0.40
0.66
SYMBOL
MIN
MAX
A
1.35
1.75
A1
0.10
0.25
B
0.33
0.51
C
0.19
0.25
D
4.80
5.00
E
3.80
4.00
L
8 LEAD PLASTIC SO (unit: mm)
D
H
E
e
e
A
C
A1
l
0.65
B
1.27(TYP)
H
5.80
6.20
L
0.40
1.27
L
8
AIC1521
l
SOT-89-5 (unit: mm)
D
A
b1
C
b
HE
E
LE
SYMBOL
MIN
MAX
A
1.40
1.60
b
0.32
0.52
b1
1.40
1.80
C
0.30
0.50
D
4.40
4.60
E
2.40
2.60
e
300 (TYP)
e1
1.50 (TYP)
b
e1
e
l
HE
4.20
5.00
LE
0.80
---
SOT-89-5 MARKING
Part No.
Marking
AIC1521-0CW
BH01
AIC1521-1CW
BH02
9
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