AOZ1321DI [AOS]
Load Switch with Controlled Slew Rate; 与摆率可控负载开关
| 型号： | AOZ1321DI |
| 厂家： | 
ALPHA & OMEGA SEMICONDUCTORS |
| 描述： | Load Switch with Controlled Slew Rate |
| 文件： | 总15页 (文件大小：637K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AOZ1321DI
Load Switch with Controlled Slew Rate
General Description
Features
The AOZ1321DI is a P-channel high-side load switch
with controlled slew rate. Three slew rate options are
available. The AOZ1321DI-01L and AOZ1321DI-04L
have slew rates of 800us. The AOZ1321DI-02L and
AOZ1321DI -05L feature fast Slew Rate (less than 1µs).
The slew rate of AOZ1321DI-03L and AOZ1321DI-06L is
100µs. The AOZ1321DI-03L, AOZ1321DI-04L, and
AOZ1321DI-05L provide an output discharge circuit to
quickly discharge the output when the switch is disabled.
● 1.6V to 5.5V input voltage range
● Low R (60mΩ typical at 5V)
DS(ON)
● Controlled turn-on slew rate
● 800µs (AOZ1321DI-01L, -04L)
● 100µs (AOZ1321DI-03L, -06L)
● 1µs (AOZ1321DI-02L, -05L)
● Output discharge function (-03L, -04L, -05L)
● Low quiescent current (1.0µA typical)
● Low shutdown current (<1µA)
● 4kV ESD Rating
The P-channel MOSFET has typical on resistance of
60mΩ. The very low R
significantly reduces the
DS(ON)
power path dissipation. The input voltage range of
AOZ1321DI is from 1.6V to 5.5V. The control input is
compatible with both TTL and CMOS logic. Ultra low
quiescent current makes this product suitable for any
portable applications.
● Tiny 1.2x1.6 DFN package
Applications
● Cellular phones
● MP3 players
The AOZ1321DI is available in 4-pin 1.2x1.6 DFN
package and is rated over the -40°C to +85°C ambient
temperature range.
● Personal media players
● Notebook computers
● Digital still cameras
● Hot-swap applications
Typical Application
V
V
IN
OUT
OUT
IN
C1
C2
1µF/10µF
AOZ1321DI
OFF ON
EN
GND
R1
Rev. 1.1 August 2008
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Page 1 of 15
AOZ1321DI
Ordering Information
Part Number
Slew Rate
Output Discharge
Package
Environmental
AOZ1321DI-04L
AOZ1321DI-01L
AOZ1321DI-05L
AOZ1321DI-02L
AOZ1321DI-03L
AOZ1321DI-06L
800µs
800µs
1µs
Yes
No
Yes
No
1.2 x 1.6 DFN-4
Green Product
1µs
100µs
100µs
Yes
No
• All AOS products are offered in packages with Pb-free plating and compliant to RoHS standards.
• Parts marked as Green Products (with “L” suffix) use reduced levels of Halogens, and are also RoHS compliant.
Please visit www.aosmd.com/web/quality/rohs_compliant.jsp for additional information.
Pin Configuration
VOUT
GND
1
2
4
3
EN
Pad is
GND
VIN
DFN-4 1.2mm x 1.6mm
(Top View)
Pin Description
Pin Name
Pin Number
Pin Function
IN
3
2
1
4
Input. IN is the drain of the P-channel MOSFET. It is the supply input of the IC.
Ground.
GND
OUT
EN
Output. OUT is the source of the P-channel MOSFET.
Enable. The P-channel MOSFET turns on when EN is logic HIGH.
Absolute Maximum Ratings
Recommend Operating Ratings
The device is not guaranteed to operate beyond the Maximum
Operating Ratings.
Exceeding the Absolute Maximum ratings may damage the device.
Parameter
Rating
Parameter
Rating
Input Voltage (V )
6V
6V
IN
Enable Voltage (V )
Input Voltage (V )
1.6V to 5.5V
IN
IN
Continuous Drain Current (I )
Junction Temperature (T )
-40°C to +125°C
D
J
T = 25°C
±2A
±1.4A
A
Package Thermal Resistance
T = 85°C
A
1.2 x 1.6 DFN-4 (Θ
1.2 x 1.6 DFN-4 (Θ
)
143.17°C/W
128.1°C/W
JA
JC
Pulsed Drain Current (I
)
±6A
DP
)
Continuous Diode Current (I )
–50mA
–55°C to +150°C
4kV
S
Storage Temperature (T )
S
(1)
ESD Rating
Note:
1. Devices are inherently ESD sensitive, handling precautions are
required. Human body model is a 100pF capacitor discharging
through a 1.5kΩ resistor.
Rev. 1.1 August 2008
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Page 2 of 15
AOZ1321DI
Electrical Characteristics
T = 25°C, V = V = 5V, unless otherwise specified.
A
IN
EN
Symbol
Parameter
Conditions
Min.
Typ.
Max. Units
V
Enable Threshold Voltage
V
V
= 1.6V to 4.5V, I = –250uA
0.3
1.2
V
EN_TH
IN
IN
D
I
Quiescent Supply Current
AOZ1321DI -02L/05L
IN
= V = 5.5V
1
3
3
µA
EN
AOZ1321DI -01L/03L/04L/06L
OFF State Leakage Current
Switch On-Resistance
1.6
I
V
V
V
V
V
V
V
V
V
= +5.5V, V = 0V
1
µA
mΩ
Ω
OFF
IN
IN
IN
IN
IN
IN
IN
IN
IN
EN
R
= 5.0V, I = –100mA, V = 1.5V
85
60
62
DS(ON)
D
EN
= 4.5V, I = –100mA, V = 1.5V
90
D
EN
= 3.6V, I = –100mA, V = 1.5V
65
95
D
EN
= 2.5V, I = –100mA, V = 1.5V
75
120
180
195
223
220
D
EN
= 1.8V, I = –100mA, V = 1.5V
95
D
EN
= 1.7V, I = –100mA, V = 1.5V
101
114
162
D
EN
= 1.6V, I = –100mA, V = 1.5V
D
EN
R
Turn-Off Resistance
= 3.6V, I
= 1mA, V = 0V
SHUTDOWN
TEST
EN
AOZ1321DI–05L (T = 1µs with Output Discharge)
R
T
Output Turn-on delay
Output Rise-time
1.3
1.7
100
20
2.5
4.0
µs
µs
ns
ns
D(ON)
T
0.5
0.5
500
500
50
R
V
= 3.6V, I = –100mA, V = 1.5V
D EN
IN
T
Output Turn-off delay
Output Fall-time
200
100
D(OFF)
T
F
AOZ1321DI–02L (T = 1µs without Output Discharge)
R
T
Output Turn-On Delay
Output Rise-time
1.3
1.7
100
20
2.5
4.0
µs
µs
ns
ns
D(ON)
T
R
V
= 3.6V, I = –100mA, V = 1.5V
D EN
IN
T
Output Turn-Off Delay
Output Fall-time
200
100
D(OFF)
T
F
AOZ1321DI–04L (T = 800µs with Output Discharge)
R
T
Output Turn-On Delay
Output Rise Time
320
800
60
700
1500
200
µs
µs
ns
ns
D(ON)
T
R
V
= 3.6V, I = –100mA, V = 1.5V
D EN
IN
T
Output Turn-Off Delay
Output Fall-time
D(OFF)
T
20
100
F
AOZ1321DI–01L (T = 800µs without Output Discharge)
R
T
Output Turn-On Delay
Output Rise Time
320
800
60
700
1500
200
µs
µs
ns
ns
D(ON)
T
R
V
= 3.6V, I = –100mA, V = 1.5V
D EN
IN
T
Output Turn-Off Delay
Output Fall-time
D(OFF)
T
20
100
F
AOZ1321DI–03L (TR = 100µs with Output Discharge)
T
Output Turn-On Delay
Output Rise Time
120
100
110
20
220
200
200
100
µs
µs
ns
ns
D(ON)
T
R
V
= 3.6V, I = –100mA, V = 1.5V
D EN
IN
T
Output Turn-Off Delay
Output Fall-time
D(OFF)
T
F
AOZ1321DI–06L (T = 100µs without Output Discharge)
R
T
Output Turn-On Delay
Output Rise Time
120
100
110
20
220
200
200
100
µs
µs
ns
ns
D(ON)
T
50
R
V
= 3.6V, I = –100mA, V = 1.5V
IN
D
EN
T
Output Turn-Off Delay
Output Fall-time
D(OFF)
T
F
Rev. 1.1 August 2008
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Page 3 of 15
AOZ1321DI
Typical Operating Characteristics
R
Variance with Temperature
EN Threshold Voltage vs. Input Voltage
DS(ON)
90
85
80
75
70
65
60
55
50
1
0.9
0.8
0.7
0.6
0.5
0.4
Vds = 3.6V, Id = 0.1A
VIH, Id = -250uA
VIL, Id = -250uA
-40 -20
0
20 40 60 80 100 120 140 160
Temperature (°C)
1.5
2.5
3.5
Input Voltage (V)
4.5
5.5
ON Resistance vs. Input Voltage
ON Resistance vs. Input Voltage
500
450
400
350
300
250
200
150
100
50
120
110
100
90
IL = 1.2A
IL = 0.9A
IL = 0.1A
Vin=1.8V
Vin=2.5V
Vin=4.5V
80
70
60
50
0
1.5
2.5
3.5
Input Voltage (V)
4.5
5.5
0
0.5
1 1.5
Load Current (A)
2
2.5
3
Turn-on Delay vs. Input Voltage
(AOZ1321DI-02L/05L)
Rise Time vs. Input Voltage
(AOZ1321DI-02L/05L)
12
10
8
8
7
6
5
4
3
2
1
0
6
4
2
0
1.5
2
2.5
3
3.5
4
4.5
5
1.5
2
2.5
3
3.5
4
4.5
5
Input Voltage (V)
Input Voltage (V)
Rev. 1.1 August 2008
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Page 4 of 15
AOZ1321DI
Typical Operating Characteristics (Continued)
Turn-off Delay vs. Input Voltage
(AOZ1321DI-02L/05L)
Fall Time vs. Input Voltage
(AOZ1321DI-02L/05L)
200
40
35
30
25
20
15
10
5
180
160
140
120
100
80
60
40
20
0
0
1.5
2
2.5
3
3.5
4
4.5
5
1.5
2
2.5
3
3.5
4
4.5
5
Input Voltage (V)
Input Voltage (V)
Rise Time vs. Input Voltage
(AOZ1321DI-01L/04L)
Turn-on Delay vs. Input Voltage
(AOZ1321DI-01L/04L)
1200
1000
800
600
400
200
0
450
400
350
300
250
200
150
100
50
0
1.5
2
2.5
3
3.5
4
4.5
5
1.5
2
2.5
3
3.5
4
4.5
5
Input Voltage (V)
Input Voltage (V)
Turn-off Delay vs. Input Voltage
(AOZ1321DI-01L/04L)
Fall Time vs. Input Voltage
(AOZ1321DI-01L/04L)
180
160
140
120
100
80
45
40
35
30
25
20
15
10
5
60
40
20
0
0
1.5
2
2.5
3
3.5
4
4.5
5
1.5
2
2.5
3
3.5
4
4.5
5
Input Voltage (V)
Input Voltage (V)
Rev. 1.1 August 2008
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Page 5 of 15
AOZ1321DI
Typical Operating Characteristics (Continued)
Turn-on Delay vs. Input Voltage
(AOZ1321DI-03L/06L)
Rise Time vs. Input Voltage
(AOZ1321DI-03L/06L)
350
120
100
80
60
40
20
0
300
250
200
150
100
50
0
1.5
2
2.5
3
3.5
4
4.5
5
1.5
2
2.5
3
3.5
4
4.5
5
Input Voltage (V)
Input Voltage (V)
Fall Time vs. Input Voltage
(AOZ1321DI-03L/06L)
Turn-off Delay vs. Input Voltage
(AOZ1321DI-03L/06L)
300
50
45
40
35
30
25
20
15
10
5
250
200
150
100
50
0
0
1.5
2
2.5
3
3.5
4
4.5
5
1.5
2
2.5
3
3.5
Input Voltage (V)
4
4.5
5
Input Voltage (V)
Rev. 1.1 August 2008
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Page 6 of 15
AOZ1321DI
Functional Characteristics
AOZ1321DI-02L, AOZ1321DI-05L
Turn-On Timing
Turn-Off Timing
ENABLE
2V/div
ENABLE
2V/div
V
OUT
2V/div
V
OUT
2V/div
I
I
OUT
OUT
500mA/div
100mA/div
Time: 4µs/div
Time: 40µs/div
Turn-On Timing
Turn-Off Timing
ENABLE
2V/div
ENABLE
2V/div
V
OUT
2V/div
V
OUT
2V/div
I
I
OUT
OUT
2A/div
100mA/div
Time: 400µs/div
Time: 10µs/div
Rev. 1.1 August 2008
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Page 7 of 15
AOZ1321DI
Functional Characteristics (Continued)
AOZ1321DI-01L, AOZ1321DI-04L
Turn-On/Turn-Off Timing
Turn-Off Timing
ENABLE
2V/div
ENABLE
2V/div
V
OUT
2V/div
V
OUT
2V/div
I
I
OUT
OUT
100mA/div
100mA/div
Time: 1ms/div
Time: 40µs/div
Turn-On/Turn-Off Timing
Turn-Off Timing
ENABLE
2V/div
ENABLE
2V/div
V
OUT
V
OUT
2V/div
2V/div
I
I
OUT
OUT
100mA/div
100mA/div
Time: 400µs/div
Time: 1ms/div
Rev. 1.1 August 2008
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Page 8 of 15
AOZ1321DI
Functional Characteristics (Continued)
AOZ1321DI-03L, AOZ1321DI-06L
Turn-On/Turn-Off Timing
Turn-Off Timing
ENABLE
2V/div
ENABLE
2V/div
V
V
OUT
OUT
2V/div
2V/div
I
I
OUT
OUT
100mA/div
100mA/div
Time: 1ms/div
Time: 40µs/div
Turn-On/Turn-Off Timing
Turn-Off Timing
ENABLE
2V/div
ENABLE
2V/div
V
OUT
V
OUT
2V/div
2V/div
I
I
OUT
OUT
100mA/div
100mA/div
Time: 1ms/div
Time: 400µs/div
Rev. 1.1 August 2008
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Page 9 of 15
AOZ1321DI
Timing Diagram
VIH
EN
VIL
90%
90%
10%
OUT
T
D(ON)
T
D(OFF)
T
R
Figure 1. AOZ1321 Timing Diagram
Functional Block Diagram
IN
OUT
Gate Driver &
Slew Rate
Control
160Ω
AOZ1321DI
EN
GND
Figure 2. Functional Block Diagram
Rev. 1.1 August 2008
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Page 10 of 15
AOZ1321DI
Detailed Description
Internal Discharge Resistor
Three slew-rate options are available. AOZ1321DI-01L
and AOZ1321DI-04L have slew rate of 800us. This
option significantly reduces the inrush current when the
MOSFET turns on, allowing the use of very small input
capacitor. AOZ1321DI-02L and -05L have no slew rate
control and the MOSFET can be turned on within 1us.
This option is suitable for applications that require very
fast switching. AOZ1321DI-03L and -06L have moderate
slew rate to 100µs. The AOZ1321DI-03L, -04L and -05L
options include an internal output discharge circuit that
quickly discharges the output to ground when the device
is disabled.
The AOZ1321DI has an internal 160Ω resistor to
discharge any remaining voltage from the system to
the ground that is store in a capacitive load.This provides
a safe shutdown of the system to prevent any damages
to the devices. This function is controlled from the
Enable pin.
Slew Rate Control
The AOZ1321DI is a family of P-channel high-side load
switches with controlled slew rate. The device is enabled
when the EN pin is high. Once enabled, the gate driver
and slew-rate control circuitry immediately raises the
source-to-gate voltage of the P-channel MOSFET to its
threshold level, and then gradually turns on the MOSFET
by linearly increasing the source-to-gate voltage. This
slow turn-on action effectively limits the input inrush
current and provides a nice ramp for the output voltage.
After the MOSFET is fully enhanced, the AOZ1321DI
quickly increases the source-to-gate voltage to the full
input voltage to minimize on resistance and reduce
power dissipation.
On/Off Control
The AOZ1321DI is enabled when the EN pin is asserted
high. The device is disabled when the EN pin is asserted
low.The EN input is compatible with both TTL and CMOS
logic.
Applications Information
Input Capacitor Selection
Output Capacitor Selection
Use a 1µF or larger capacitor for input bypassing.
Place the capacitor close to the IN pins of AOZ1321DI.
Use a 0.1µF or larger capacitor between OUT and GND.
The capacitance does not affect the turn-on slew rate.
However, a larger capacitor makes the initial turn-on
transient smoother.
Rev. 1.1 August 2008
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Page 11 of 15
AOZ1321DI
Layout Guidelines
Good PCB is important for improving the thermal perfor-
mance of AOZ1321DI. Place the input and output bypass
capacitors close to the IN and OUT pins. The input and
output PCB traces should be as wide as possible for the
given PCB space. Use a ground plane to enhance the
power dissipation capability of the device. The
AOZ1321DI evaluation board can be used as a layout
example. The PCB layout of AOZ1321DI evaluation
board is shown in Figure 3.
Figure 3. AOZ1321DI PCB Layout
Rev. 1.1 August 2008
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Page 12 of 15
AOZ1321DI
Package Dimensions, DFN 1.2 x 1.6 4L
Pin 1 Dot
E
Pin #1 ID
R0.100
E1
A3
A1
b
D
D1
e
Exposed
Pad
A
TOP VIEW
BOTTOM VIEW
SIDE VIEW
Dimensions in millimeters
Dimensions in inches
Symbols Min.
Nom. Max.
Symbols Min. Nom. Max.
A
A1
A3
b
0.50
0
0.55
—
0.60
0.05
A
A1
A3
b
0.020 0.022 0.024
RECOMMENDED LAND PATTERN
0
—
0.002
1.30
0.65
0.152 REF.
0.25
0.006 REF.
0.20
1.55
0.45
1.15
0.81
0.30
1.65
0.55
1.25
0.91
0.008 0.010 0.012
0.061 0.063 0.065
0.018 0.020 0.022
0.045 0.047 0.049
0.032 0.034 0.036
0.020 BSC
E
1.60
E
E1
D
0.50
E1
D
0.275
0.86
1.20
D1
e
0.86
D1
e
0.30
0.40
0.5 BSC
0.35
0.55
L
0.30
—
0.40
—
L
0.012 0.014 0.016
aaa
bbb
ccc
0.15
aaa
bbb
ccc
—
—
—
0.006
0.004
0.004
—
—
—
0.50
—
0.10
—
UNIT: mm
—
0.10
—
Notes:
1. Controlling dimension is millimeter, converted inch dimensions are not necessarily exact.
2. Coplanarity ccc applies to the terminals and all other bottom surface metallization.
Rev. 1.1 August 2008
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Page 13 of 15
AOZ1321DI
Tape and Reel Dimensions, DFN 1.2 x 1.6 4L
Carrier Tape
D0
P1
P2
E1
D1
K0
B0
E2
E
5°
E3
Feeding Direction
P0
5°
T
A0
B–B' Section
A–A' Section
D1
UNIT: mm
Package
T
B0
A0
K0
D0
E
E1
E2
P0
P1
P2
DFN 1.2x1.6 0.254
0.02
1.78
0.05
1.38
0.05
0.78
0.05
ø1.5 ø0.6
8.00
1.75
0.10
3.50
0.05
4.00
0.10
4.00
0.10
2.00
0.05
0.10
0.05 +0.30/-0.10
45°
Reel
W1
65°
S
K
N
M
E
H
Arbor Hole Detail A
Scale 2:1
Section: B–B'
Front View
Section: A–A'
UNIT: mm
Tape Size Reel Size
8mm ø149
M
N
W
W1
H
S
K
E
ø179.0 ø55.0
0.50 0.5
8.4
14.4
ø13.0
+0.5/-0.2
1.5
Min.
10.1
Min.
2.70
0.2
+1.5/-0.0 Max.
Leader / Trailer & Orientation
Trailer Tape
300mm Min.
Components Tape
Orientation in Pocket
Leader Tape
500mm Min.
Rev. 1.1 August 2008
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Page 14 of 15
AOZ1321DI
Package Marking
DFN 1.2 x 1.6
$P $W $L
Part Number Code
Lot Number
Underline Denotes Green Product
Week
Alpha & Omega Semiconductor reserves the right to make changes at any time without notice.
LIFE SUPPORT POLICY
ALPHA & OMEGA SEMICONDUCTOR PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL
COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS.
As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant into
the body or (b) support or sustain life, and (c) whose
failure to perform when properly used in accordance
with instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of
the user.
2. A critical component in any component of a life
support, device, or system whose failure to perform can
be reasonably expected to cause the failure of the life
support device or system, or to affect its safety or
effectiveness.
Rev. 1.1 August 2008
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Page 15 of 15
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