AAT3524IGY-3.08-400-T1 [SKYWORKS]
Power Management Circuit,;
| 型号： | AAT3524IGY-3.08-400-T1 |
| 厂家： | 
SKYWORKS SOLUTIONS INC. |
| 描述： | Power Management Circuit, |
| 文件： | 总10页 (文件大小：412K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PRODUCT DATASHEET
AAT3520/2/4
TM
TM
PowerManager
MicroPower Microprocessor Reset Circuit
General Description
Features
•
•
•
•
•
•
•
The AAT3520 series of PowerManager products is part of
AnalogicTech’s Total Power Management IC™ (TPMIC™)
product family. These microprocessor reset circuits are
ideal for monitoring voltage supplies in portable sys-
tems, where extended battery life is critical. They pro-
vide a low-cost, reliable solution by eliminating the need
for external components. The AAT3520 series operates
by monitoring the system power supply voltage. When
the input voltage drops below a fixed threshold, the
device asserts a reset signal for a fixed time period after
VCC has risen back above the fixed threshold; 30ms and
150ms minimum periods are available. The AAT3520
product series is guaranteed to operate down to 1.2V
and is designed to ignore fast line transients appearing
on VCC. The AAT3520 series is available with three out-
put stage versions: AAT3520 push-pull active high out-
put; AAT3522 push-pull active low output; and AAT3524
open drain active low output. The quiescent supply cur-
rent is extremely low, typically 1μA, making it ideal for
portable battery-operated equipment.
Input Voltage Range: 1.2V to 5.5V
Operation Down to 1.2V
Extremely Low Quiescent Current: <2μA
High Accuracy Detection Threshold: ±1.5%
Monitor Power Supply Voltages
Fixed Thresholds from 2.2V to 4.6V
-Reset Pulse Width Options
Minimum 30ms or 150ms or 300ms
Fast Propagation Delay <20μs
Available Output Configurations:
▪
▪
•
Open-Drain Output
CMOS Active High Output
CMOS Active Low Output
▪
▪
▪
•
•
•
Temperature Range: -40°C to +85°C
3-Pin SOT23 Package
4kV ESD Rating
Applications
•
•
•
•
•
Cell Phones
Embedded Systems
Intelligent Instruments
Notebook Computers
Portable Electronics
The AAT3520/2/4 are available in a Pb-free, 3-pin SOT23
package and are specified over the -40°C to +85°C
operating temperature range.
Typical Application
VCC
VCC
VCC
*
100kΩ
(nominal)
AAT3520
RESET
µP
RESET
AAT3522
INPUT
(RESET)
AAT3524
GND
GND
*AAT3524 Only
w w w . a n a l o g i c t e c h . c o m
3520.2010.03.1.4
1
PRODUCT DATASHEET
AAT3520/2/4
TM
TM
PowerManager
MicroPower Microprocessor Reset Circuit
Pin Descriptions
Pin #
Symbol
Function
1
GND
Ground connection.
RESET
RESET output remains high while VCC is below the reset threshold and remains so for a fixed time pe-
(AAT3520) riod after VCC raises above the reset threshold.
2
3
RESET
(AAT3522,
AAT3524)
RESET output remains low while VCC is below the reset threshold and remains so for a fixed time period
after VCC raises above the reset threshold.
Supply voltage (+1.2V to +5.5V). Due to extremely low operating current, place a 10nF capacitor
between VCC and GND.
VCC
Part Number Descriptions
Part Number
Part Description
AAT3520
AAT3522
AAT3524
Reset Output Push Pull Active High with Delay
Reset Output Push Pull Active Low with Delay
Reset Output Open Drain Active Low with Delay
Pin Configuration
SOT23-3
(Top View)
1
2
GND
3
VCC
(RESET) RESET
w w w . a n a l o g i c t e c h . c o m
2
3520.2010.03.1.4
PRODUCT DATASHEET
AAT3520/2/4
TM
TM
PowerManager
MicroPower Microprocessor Reset Circuit
Absolute Maximum Ratings1
TA = 25°C, unless otherwise noted.
Symbol
Description
Value
Units
VCC
VCC to GND
-0.3 to 5.5
-0.3 to VCC + 0.3
V
V
RESET to GND (Push-Pull Output)
RESET to GND (Open Drain Output)
Maximum Continuous Input Current
RESET/RESET Current
Rate of Rise of VCC
Operating Junction Temperature Range
Maximum Soldering Temperature (at Leads, 10 sec.)
VRESET
-0.3 to 5.5
20
20
100
-40 to 150
300
IMAX
IRESET
dVCC/dt
TJ
mA
mA
V/μs
°C
TLEAD
°C
Thermal Information2
Symbol
Description
Value
Units
ΘJA
PD
Maximum Thermal Resistance
Maximum Power Dissipation
200
320
°C/W
mW
1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions
specified is not implied. Only one Absolute Maximum Rating should be applied at any one time.
2. Mounted on an FR4 board.
w w w . a n a l o g i c t e c h . c o m
3520.2010.03.1.4
3
PRODUCT DATASHEET
AAT3520/2/4
TM
TM
PowerManager
MicroPower Microprocessor Reset Circuit
Electrical Characteristics
VIN = 5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = 25°C; VCC = 5V for 4.63/4.38V ver-
sions; VCC = 3.3V for 3.08/2.93V versions; VCC = 3.0V for 2.63V version; VCC = 2.5V for 2.32/2.2V versions.
Symbol Description
Conditions
Min
Typ
Max
Units
TA = 0ºC to +70ºC
TA = -40ºC to +85ºC
VCC = 5.5V
VCC = 3V
TA = 25ºC
1.0
1.2
5.5
5.5
3
2
VCC
IQ
Operation Voltage
V
1.05
0.85
VTH
Quiescent Current
μA
VTH - 1.5%
VTH - 2.5%
VTH + 1.5%
VTH + 2.5%
VTH
RESET Threshold (Table 1)
V
TA = -40ºC to +85ºC
VTH
RESET Threshold
Temperature Coefficient
RESET Propagation Delay
ΔVTH/°C
40
ppm/°C
tP
VCC = VTH to (VTH - 100mV)
-50 Option
-200 Option
15
50
250
500
μs
30
150
300
100
400
800
RESET Active Timeout
Period
tRDY
ms
-400 Option
ISINK = 1.2mA, VCC = VTH(min), VTH ≤ 3.08V,
RESET Asserted
ISINK = 3.2mA, VCC = VTH(min), VTH > 3.08V,
RESET Asserted
0.3
0.4
RESET Low Output Voltage
AAT3522, AAT3524
VOL
VOH
VOL
V
V
V
RESET High Output Voltage ISOURCE = 800μA, VTH > 3.08V, VCC > VTH (max)
VCC -1.5
0.8 VCC
AAT3522
ISOURCE = 500μA, VTH ≤ 3.08V, VCC > VTH (max)
ISINK = 1.2mA, VCC > VTH (max), VTH ≤ 3.08V,
RESET Not Asserted
ISINK = 3.2mA, VCC > VTH (max), VTH > 3.08V,
RESET Not Asserted
0.3
0.4
RESET Low Output Voltage
AAT3520
RESET High Output Voltage ISOURCE = 500μA, VCC > 2.1V, RESET Asserted
0.8VCC
0.8VCC
VOH
V
AAT3520
ISOURCE = 50μA, VCC > 1.2V, RESET Asserted
RESET Leakage Current
AAT3524
IDOFF
VCC > VTH
1
μA
w w w . a n a l o g i c t e c h . c o m
4
3520.2010.03.1.4
PRODUCT DATASHEET
AAT3520/2/4
TM
TM
PowerManager
MicroPower Microprocessor Reset Circuit
Typical Characteristics
Normalized Reset Threshold
vs. Temperature
Supply Current vs. Temperature
1.40
1.003
1.002
1.001
1.000
0.999
0.998
0.997
1.20
VCC = 5V
1.00
0.80
VCC = 3V
0.60
0.40
0.20
0.00
-40
-20
0
20
40
60
80
-40
-20
0
20
40
60
80
Temperature (°C)
Temperature (°C)
Normalized Power-Up Reset Timeout
vs. Temperature
Power-Down Reset Propagation
Delay vs. Temperature
30
25
20
15
10
5
1.5
1.4
1.3
1.2
1.1
1
0.9
0.8
0.7
0.6
0.5
VOD = 10mV
VOD = 100mV
-40
-20
0
20
40
60
80
100
0
-40
-20
0
20
40
60
80
Temperature (°C)
Temperature (°C)
Maximum Transient Duration
vs. Reset Threshold Overdrive
400
350
300
250
200
150
100
50
0
1
10
100
1000
Reset Threshold Overdrive, VTH - VCC (mV)
w w w . a n a l o g i c t e c h . c o m
3520.2010.03.1.4
5
PRODUCT DATASHEET
AAT3520/2/4
TM
TM
PowerManager
MicroPower Microprocessor Reset Circuit
Functional Block Diagram
VCC
Reset
RESET
Generator
+ Timer
(RESET)
Oscillator
VREF
GND
and assert a reset signal whenever the VCC voltage falls
below a factory-programmed threshold. This threshold is
accurate within ±1.5% at 25ºC and within ±2.5% over
the entire operating temperature range. The reset signal
remains asserted for a fixed time period (tRDY) after VCC
has risen above the threshold, as shown in Figure 1. See
Ordering Information for available RESET active timeout
periods.
Functional Description
General
During start-up, the reset pin on a microprocessor
ensures that it is fully reset and starts up in a known
condition. The AAT3520 series of microprocessor reset
devices monitor the supply voltage to a microprocessor
VCC
VTH
VTH
VTH
tRDY
tRDY
RESET
Figure 1: Reset Timing Diagram (AAT3522, AAT3524).
w w w . a n a l o g i c t e c h . c o m
6
3520.2010.03.1.4
PRODUCT DATASHEET
AAT3520/2/4
TM
TM
PowerManager
MicroPower Microprocessor Reset Circuit
Supply Voltage Transient Behavior
Applications Information
In some cases, fast negative transients of short duration
can appear on the VCC power supply. The AAT3520 series
devices provide some immunity to line transients which
can generate invalid reset pulses. Figure 1 shows typical
behavior to short duration pulses versus RESET com-
parator overdrive. As shown in the Maximum Transient
Duration vs. Reset Threshold Overdrive graph, when the
transient voltage becomes larger, the time allowed
before asserting a reset becomes shorter (i.e., typically
a transient of 100mV below the reset threshold would
have to present for more than 50μs to cause a reset).
Immunity can be increased by the addition of a small
bypass capacitor of 0.1μF connected as closely to the VCC
pin as possible.
Reset Output Options
The AAT3524 has an active low open drain output and
the AAT3520/2 have a push-pull output. The AAT3524
may be used in multiple voltage systems with an exter-
nal pull-up resistor. This allows the AAT3524 to interface
to microprocessors with higher supply voltages up to
5.5V (Figure 3). In the event of a power down or brown-
out condition, the reset signal remains valid until the VCC
drops below 1.2V. To ensure validity down to ground, an
external 100kΩ resistor should be connected between
the RESET output and GND.
VCC
VCC
VCC
µP
*
100kΩ
(nominal)
AAT3520
RESET
INPUT
RESET
0.1µF
AAT3522
AAT3524
(RESET)
GND
GND
*AAT3524 Only
Figure 2: Using Recommended Bypass Capacitor.
w w w . a n a l o g i c t e c h . c o m
3520.2010.03.1.4
7
PRODUCT DATASHEET
AAT3520/2/4
TM
TM
PowerManager
MicroPower Microprocessor Reset Circuit
+3.3V
VCC
+5.0V
VCC
100kΩ
5V
RESET
INPUT
RESET
AAT3524
GND
System
GND
Figure 3: Using AAT3524 Open Drain Output with Multiple Supplies.
w w w . a n a l o g i c t e c h . c o m
8
3520.2010.03.1.4
PRODUCT DATASHEET
AAT3520/2/4
TM
TM
PowerManager
MicroPower Microprocessor Reset Circuit
Factory Trimmed Reset Thresholds1 and Ordering Information
Reset Threshold Voltage, VTH (V)
TA = -40°C to
+85°C
Minimum
Reset
Marking3 Active (ms)
TA = 25°C
Ordering
Part Number2
Min
Typ
Max
Min
Max
AAT3522IGY-2.20-200-T1
DBXYY
DTXYY
DXXYY
GNXYY
CAXYY
CWXYY
150
2.167
2.200
2.233
2.145
2.255
AAT3520IGY-2.32-200-T1
AAT3522IGY-2.32-200-T1
AAT3524IGY-2.32-200-T1
150
150
150
2.285
2.413
2.591
2.320
2.450
2.630
2.355
2.487
2.669
2.262
2.389
2.564
2.378
2.511
2.696
AAT3522IGY-2.45-200-T1
150
AAT3520IGY-2.63-200-T1
AAT3522IGY-2.63-200-T1
AAT3524IGY-2.63-200-T1
150
150
150
AAT3520IGY-2.93-200-T1
AAT3522IGY-2.93-50-T1
AAT3522IGY-2.93-200-T1
AAT3524IGY-2.93-200-T1
AAT3520IGY-3.08-50-T1
AAT3520IGY-3.08-200-T1
AAT3522IGY-3.08-50-T1
AAT3522IGY-3.08-200-T1
AAT3524IGY-3.08-200-T1
AAT3524IGY-3.08-400-T1
CZXYY
FVXYY
CCXYY
FPXYY
EFXYY
CNXYY
CYXYY
CBXYY
BGXYY
J7XYY
150
30
150
150
30
150
30
150
150
300
2.886
3.034
2.930
3.080
2.974
3.126
2.857
3.003
3.003
3.157
150
150
150
150
150
150
AAT3520IGY-4.38-200-T1
AAT3522IGY-4.38-200-T1
AAT3524IGY-4.38-200-T1
FUXYY
IVXYY
4.314
4.561
4.380
4.630
4.446
4.699
4.271
4.514
4.490
4.746
AAT3520IGY-4.63-200-T1
AAT3522IGY-4.63-200-T1
AAT3524IGY-4.63-200-T1
HKXYY
DAXYY
DUXYY
1. Contact Local Sales Office for custom trimmed options.
2. Sample stock is generally held on part numbers listed in BOLD.
3. XYY = assembly and date code.
w w w . a n a l o g i c t e c h . c o m
3520.2010.03.1.4
9
PRODUCT DATASHEET
AAT3520/2/4
TM
TM
PowerManager
MicroPower Microprocessor Reset Circuit
Package Information
SOT23-3
2.92 ± 0.12
0.95 BSC
1.90 BSC
0.50 ± 0.10
0.54 REF
0.40 ± 0.10 × 3
All dimensions in millimeters.
Advanced Analogic Technologies, Inc.
3230 Scott Boulevard, Santa Clara, CA 95054
Phone (408) 737-4600
Fax (408) 737-4611
© Advanced Analogic Technologies, Inc.
AnalogicTech cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AnalogicTech product. No circuit patent licenses, copyrights, mask work rights, or other intellectual
property rights are implied. AnalogicTech reserves the right to make changes to their products or specifications or to discontinue any product or service without notice. Except as provided in AnalogicTech’s terms and
conditions of sale, AnalogicTech assumes no liability whatsoever, and AnalogicTech disclaims any express or implied warranty relating to the sale and/or use of AnalogicTech products including liability or warranties
relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right. In order to minimize risks associated with the customer’s applications, adequate
design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. Testing and other quality control techniques are utilized to the extent AnalogicTech deems necessary to
support this warranty. Specific testing of all parameters of each device is not necessarily performed. AnalogicTech and the AnalogicTech logo are trademarks of Advanced Analogic Technologies Incorporated. All other
brand and product names appearing in this document are registered trademarks or trademarks of their respective holders.
w w w . a n a l o g i c t e c h . c o m
10
3520.2010.03.1.4
相关型号：
©2020 ICPDF网 联系我们和版权申明