VOLTAGE REGULATORS. DS2501 Datasheet

DS2501 Datasheet PDF, Equivalent


Part Number

DS2501

Description

1A VERY LOW DROPOUT VOLTAGE REGULATORS

Manufacture

Advanced Monolithic Systems

Total Page 8 Pages
PDF Download
Download DS2501 Datasheet PDF


DS2501 Datasheet
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

DS2501 Datasheet
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


Features Datasheet pdf Advanced Monolithic Systems FEATURES AM S2501/AMS2502 1A VERY LOW DROPOUT VOLTA GE REGULATORS APPLICATIONS • High Ef ficiency Current Regulators • Post Re gulators for Switching Supplies • Aud io/Video/Modem Card Supply • Adjustab le Power Supply • Notebook/Personal C omputer Supplies • Adjustable or Fix ed Output 1.5V, 1.8V, 2.5V, 2.85V, 3.0V , 3.3V, 3.5V and 5.0V • Output Curren t of 1A • Low Dropout, typ. 200mV at 500mA Output Current • Fast Transient Response • Remote Sense GENERAL DES CRIPTION The The AMS2501/AMS2502 series of adjustable and fixed low dropout vo ltage regulators are designed to provid e 1A output current. The dropout voltag e of the device is 100mV at light loads and rising to 200mV at 500mA output cu rrent. A second input voltage of 1.2V o r greater than the output is required t o achieve this dropout. The AMS2501/AMS 2502 can also be used as a single suppl y device by connecting pin1 and pin 8 t ogether. In this case the dropout voltage will be typically 1.2V. New features have.
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