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DS2501 PDF даташит

Спецификация DS2501 изготовлена ​​​​«Advanced Monolithic Systems» и имеет функцию, называемую «1A VERY LOW DROPOUT VOLTAGE REGULATORS».

Детали детали

Номер произв DS2501
Описание 1A VERY LOW DROPOUT VOLTAGE REGULATORS
Производители Advanced Monolithic Systems
логотип Advanced Monolithic Systems логотип 

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DS2501 Даташит, Описание, Даташиты
Advanced
Monolithic
Systems
AMS2501/AMS2502
1A VERY LOW DROPOUT VOLTAGE REGULATORS
FEATURES
Adjustable or Fixed Output
1.5V, 1.8V, 2.5V, 2.85V, 3.0V, 3.3V, 3.5V and 5.0V
Output Current of 1A
Low Dropout, typ. 200mV at 500mA Output Current
Fast Transient Response
Remote Sense
APPLICATIONS
High Efficiency Current Regulators
Post Regulators for Switching Supplies
Audio/Video/Modem Card Supply
Adjustable Power Supply
Notebook/Personal Computer Supplies
GENERAL DESCRIPTION
TThhee AMS2501/AMS2502 series of adjustable and fixed low dropout voltage regulators are designed to provide 1A output
current. The dropout voltage of the device is 100mV at light loads and rising to 200mV at 500mA output current. A second
input voltage of 1.2V or greater than the output is required to achieve this dropout. The AMS2501/AMS2502 can also be used
as a single supply device by connecting pin1 and pin 8 together. In this case the dropout voltage will be typically 1.2V.
New features have been added to the AMS2501: a remote Sense pin is brought out virtually eliminating output voltage
variations due to load changes. AMS2502 has an additional feature of an On/Off pin to keep the device in stand-by mode.
The typical load regulation, measured at the Sense pin, for a load current step of 100mA to 1A is less than 1mV.
The AMS2501/AMS2502 series has fast transient response. On the AMS2502 the reference voltage is brought out to allow
the user to add a bypass capacitor for lower noise and transient response improvement.
The AMS2501/AMS2502 series are ideal for generating supplies of 1.25V to 3V where both 5V and 3.3V supplies are
available.
The AMS2501/AMS2502 devices are offered in 8 lead SOIC package.
ORDERING INFORMATION:
PACKAGE TYPE
8 LEAD SO-8
AMS2501CS
AMS2501CS-1.5
AMS2501CS-1.8
AMS2501CS-2.5
AMS2501CS-2.85
AMS2501CS-3.0
AMS2501CS-3.3
AMS2501CS-3.5
AMS2501CS-5.0
AMS2502CS
AMS2502CS-1.5
AMS2502CS-1.8
AMS2502CS-2.5
AMS2502CS-2.85
AMS2502CS-3.0
AMS2502CS-3.3
AMS2502CS-3.5
AMS2502CS-5.0
OPERATING JUNCTION
TEMPERATURE RANGE
0 to 125° C
0 to 125° C
0 to 125° C
0 to 125° C
0 to 125° C
0 to 125° C
0 to 125° C
0 to 125° C
0 to 125° C
PIN CONNECTIONS
AMS2501 8L SOIC
POWER IN 1
OUTPUT 2
OUTPUT 3
SENSE 4
8 CONTROL IN
7 N/C
6 ADJ/GND
5 N/C
Top View
AMS2502 8L SOIC
POWER IN 1
OUTPUT 2
OUTPUT 3
SENSE 4
8 CONTROL IN
7 BYPASS
6 ADJ/GND
5 ON/OFF
Top View
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723









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DS2501 Даташит, Описание, Даташиты
ABSOLUTE MAXIMUM RATINGS (Note 1)
VPOWER Input Voltage
7V
VCONTROL Input Voltage
13V
Operating Junction Temperature Range
Control Section
0°C to 125°C
Power Transistor
0°C to 150°C
Storage temperature
- 65°C to +150°C
AMS2501/AMS2502
Soldering information
Lead Temperature (10 sec)
Thermal Resistance
SO-8 package
260°C
ϕ JA= 160°C/W
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at ILOAD = 0 mA, and TJ = +25°C unless otherwise specified.
Parameter
Device
Conditions
Min Typ Max Units
Reference Voltage
Output Voltage
Line Regulation
Load Regulation
Minimum Load
Current
Control Pin Current
(Note 4)
Ground Pin Current
(Note 4)
Adjust Pin Current
Current Limit
Ripple Rejection
AMS2501/AMS2502
AMS2501/AMS2502-1.5
VCONTROL = 2.75V, VPOWER =2V, ILOAD = 10mA
VCONTROL = 2.7V to 12V, VPOWER =3.3V to 5.5V,
ILOAD = 10mA to 1A
VCONTROL = 4V, VPOWER =2.V, ILOAD = 0mA
VCONTROL = 3V, VPOWER =2.3V, ILOAD = 0mA to 1A
AMS2501/AMS2502-1.8
AMS2501/AMS2502-2.5
AMS2501/AMS2502-2.85
AMS2501/AMS2502-3.0
AMS2501/AMS2502-3.3
AMS2501/AMS2502-3.5
AMS2501/AMS2502-5.0
AMS2501/AMS2502-1.5/-
1.8/-2.5/-2.85/-3.0/-3.3/-
3.5/-5.0
AMS2501/AMS2502-1.5/-
1.8/-2.5/-2.85/-3.0/-3.3/-
3.5/-5.0
AMS2501/AMS2502
VCONTROL = 4V, VPOWER =2.V, ILOAD = 0mA
VCONTROL = 3V, VPOWER =2.3V, ILOAD = 0mA to 1A
VCONTROL = 5V, VPOWER =3.3V, ILOAD = 0mA
VCONTROL = 4V, VPOWER =3.3V, ILOAD = 0mA to 1A
VCONTROL = 5.35V, VPOWER =3.35V, ILOAD = 0mA
VCONTROL = 4.4V, VPOWER =3.7V, ILOAD = 0mA to 1A
VCONTROL = 5.5V, VPOWER =3.5V, ILOAD = 0mA
VCONTROL = 4.5V, VPOWER =3.8V, ILOAD = 0mA to 1A
VCONTROL = 5.8V, VPOWER =3.8V, ILOAD = 0mA
VCONTROL = 4.8V, VPOWER =4.1V, ILOAD = 0mA to 1A
VCONTROL = 6V, VPOWER =4V, ILOAD = 0mA
VCONTROL = 5V, VPOWER =4.3V, ILOAD = 0mA to 1A
VCONTROL = 7.5V, VPOWER =5.5V, ILOAD = 0mA
VCONTROL = 6.5V, VPOWER =5.8V, ILOAD = 0mA to 1A
ILOAD = 10 mA , 1.5V(VCONTROL - VOUT) 12V
0.8V(VPOWER - VOUT) 5.5V
VCONTROL = VOUT + 2.5V, VPOWER =VOUT + 0.8V,
ILOAD = 10mA to 1A
VCONTROL = 5V, VPOWER =3.3V, VADJ = 0V (Note 3)
AMS2501/AMS2502-1.5/-
1.8/-2.5/-2.85/-3.0/-3.3/-
3.5/-5.0
AMS2501/AMS2502-1.5/-
1.8/-2.5/-2.85/-3.0/-3.3/-
3.5/-5.0
AMS2501/AMS2502
AMS2501/AMS2502-1.5/-
1.8/-2.5/-2.85/-3.0/-3.3/-
3.5/-5.0
AMS2501/AMS2502-1.5/-
1.8/-2.5/-2.85/-3.0/-3.3/-
3.5/-5.0
VCONTROL = VOUT + 2.5V, VPOWER =VOUT + 0.8V,
ILOAD = 10mA
VCONTROL = VOUT + 2.5V, VPOWER =VOUT + 0.8V,
ILOAD = 10mA
VCONTROL = 2.75V, VPOWER = 2.05V, ILOAD = 10mA
VPOWER =VOUT + 0.8V
VCONTROL = VPOWER = VOUT + 2.5V, VRIPPLE = 1VP-P
ILOAD = 1A
1.238
1.232
1.491
1.485
1.782
1.773
2.485
2.475
2.821
2.833
2.982
2.970
3.280
3.235
3.479
3.430
4.930
4.950
1.250
1.250
1.500
1.500
1.800
1.800
2.500
2.500
2.850
2.850
3.000
3.000
3.300
3.300
3.500
3.500
5.000
5.000
1
1
5
10
6
40
1.0 1.2
60 80
1.262
1.268
1.509
1.515
1.818
1.827
2.515
2.525
2.879
2.867
3.018
3.030
3.320
3.333
3.521
3.535
5.030
5.050
3
5
10
16
10
120
1.5
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
mV
mV
mA
mA
mA
µA
A
dB
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723









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DS2501 Даташит, Описание, Даташиты
AMS2501/AMS2502
ELECTRICAL CHARACTERISTICS
Electrical Characteristics at IOUT = 0 mA, and TJ = +25°C unless otherwise specified.
Parameter
Device
Conditions
Min Typ Max Units
Thermal Regulation
Dropout Voltage
AMS2501/AMS2502
TA = 25°C, 30ms pulse, ILOAD = 1A
Note 2
0.002
0.020
%W
Control Dropout
(VCONTROL - VOUT)
Power Dropout
(VPOWER - VOUT)
AMS2501/AMS2502/-1.5/-
1.8/-2.5/-2.85/-3.0/-3.3/-
3.5/-5.0
AMS2501/AMS2502/-1.5/-
1.8/-2.5/-2.85/-3.0/-3.3/-
3.5/-5.0
VPOWER =VOUT + 0.8V, ILOAD = 10mA
VPOWER =VOUT + 0.8V, ILOAD = 1A
VCONTROL =VOUT + 2.5V, ILOAD = 1A
1.00 1.15
1.15 1.30
.05 0.15
.30 0.50
V
V
V
V
Parameters identified with boldface type apply over the full operating temperature range.
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. For guaranteed specifications and test conditions, see the
Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed.
Note 2: Unless otherwise specified VOUT = VSENSE. For the adjustable device VADJ = 0V.
Note 3: The dropout voltage for the AMS2501/AMS2502 is caused by either minimum control voltage or minimum power voltage. The specifications represent
the minimum input/output voltage required to maintain 1% regulation.
Note 4: For the adjustable device the minimum load current is the minimum current required to maintain regulation. Normally the current in the resistor divider
used to set the output voltage is selected to meet the minimum load current requirement.
Note 5: The control pin current is the drive current required for the output transistor. This current will track output current with a ratio of about 1:100. The
minimum value is equal to the quiescent current of the device.
PIN FUNCTIONS
VPOWER (Pin 1): This pin is the collector to the power
device of the AMS2501/AMS2502. The output load
current is supplied through this pin. The voltage at this
pin must be between 0.1V and 0.8V greater than the
output voltage for the device to regulate.
Output (Pin 2 and 3): These are the power output of the
device. Pin 2 and 3 are fused together and with the
package paddle serving also as heat sink.
Sense (Pin 4): This pin is the positive side of the
reference voltage for the device. With this pin it is
possible to Kelvin sense the output voltage at the load.
On/Off (Pin 5 AMS2502 only): This pin puts the device
in a stand-by mode.
Reference (Pin 7 AMS2502 only): This pin allows the
user to add a bypass capacitor on the reference voltage.
Adjust (Pin 6): This pin is the negative side of the
reference voltage for the device. Adding a small bypass
capacitor from the Adjust pin to ground improves the
transient response. For fixed voltage devices the Adjust
pin is also brought out to allow the user to add a bypass
capacitor.
GND (Pin 6): For fixed voltage devices this is the
bottom of the resistor divider that sets the output
voltage.
VCONTROL (Pin 8): This pin is the supply pin for the
control circuitry of the device. The current flow into
this pin will be about 1% of the output current. The
voltage at this pin must be between 1.0V and 1.3V
greater than the output voltage for the device to
regulate.
Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723










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