ADMOS AMS1585CT-5.0, AMS1585CT-3.5, AMS1585CT-3.3, AMS1585CT-3.0, AMS1585CT-2.85 Datasheet

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone [phone] Fax [phone]

Advanced AMS1585
Monolithic 4.6A LOW DROPOUT VOLTAGE REGULATOR

Systems

FEATURES APPLICATIONS

•• Three Terminal Adjustable or Fixed Voltages •• High Efficiency Linear Regulators

1.5V, 2.5V, 2.85V, 3.0V, 3.3V, 3.5V and 5.0V

•• Post Regulators for Switching Supplies

•• Output Current of 4.6A •• Microprocessor Supply

•• Operates Down to 1.35V Dropout •• Battery Chargers

•• Load Regulation: 0.1% •• Constant Current Regulators

•• Line Regulation: 0.015% •• Notebook/Personal Computer Supplies

•• TO-220 and TO-263 packages available •• Portable Instrumentation

GENERAL DESCRIPTION

The AMS1585 series of adjustable and fixed voltage regulators are designed to provide 4.6A output current and to operate
down to 1.35V input-to-output differential at maximum output current, decreasing at lower load currents.
On-chip trimming adjusts the reference voltage to 1%. Current limit is also trimmed, minimizing the stress under overload
conditions on both the regulator and power source circuitry.

The AMS1585 devices are pin compatible with older three-terminal regulators and are offered in 3 lead TO-220 package and 3
lead TO-263 (Plastic DD).

ORDERING INFORMATION:

PACKAGE TYPE OPERATING JUNCTION

3 Lead TO-220 3 Lead TO-263

TEMPERATURE RANGE

AMS1585CT AMS1585CM

0 to 125° C

AMS1585CT-1.5 AMS1585CM-1.5

0 to 125° C

AMS1585CT-2.5 AMS1585CM-2.5

0 to 125° C

AMS1585CT-2.85 AMS1585CM-2.85

0 to 125° C

AMS1585CT-3.0 AMS1585CM-3.0

0 to 125° C

AMS1585CT-3.3 AMS1585CM-3.3

0 to 125° C

AMS1585CT-3.5 AMS1585CM-3.5

0 to 125° C

AMS1585CT-5 AMS1585CM-5

0 to 125° C

PIN CONNECTIONS

FIXED VERSION

ADJUSTABLE VERSION

1- Ground
2- V

OUT

3- V

IN

1- Adjust
2- V

OUT

3- V

IN

1

2

3

TAB IS

OUTPUT

FRONT VIEW

1

2

3

TAB IS

OUTPUT

FRONT VIEW

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone [phone] Fax [phone]

AMS1585

ABSOLUTE MAXIMUM RATINGS (Note 1)

Power Dissipation Internally limited Soldering information
Input Voltage 15V Lead Temperature (10 sec)

300°C

Operating

Junction Temperature Range

Thermal Resistance

Control Section

0°C to 125°C

TO-220 package

 JA= 50°C/W

Power Transistor

0°C to 150°C

TO-263 package

 JA= 30°C/W *

Storage temperature

- 65°C to +150°C

* With package soldering to 0.5in2 copper area over backside
ground plane or internal power plane 

JA

can vary from

20°C/W to >40°C/W depending on mounting technique.

ELECTRICAL CHARACTERISTICS

Electrical Characteristics at I

OUT

= 0 mA, and TJ = +25°C unless otherwise specified.

Parameter Device Conditions Min Typ Max Units

Reference Voltage
(Note 2)

AMS1585 I

OUT

= 10 mA

10mA ≤ I

OUT

≤ 4.6A, 1.5V≤ (VIN - V

OUT

) ≤ 12V

1.238

1.225

1.250

1.250

1.262

1.270

V
V

Output Voltage
(Note 2)

AMS1585-1.5

0 ≤ I

OUT

≤ 4.6A , 3V≤ VIN ≤ 12V

1.485

1.470

1.500

1.500

1.515

1.530

V
V

AMS1585-2.5

0 ≤ I

OUT

≤ 4.6A , 4V≤ VIN ≤ 12V

2.475

2.450

2.500

2.500

2.525

2.550

V
V

AMS1585-2.85

0 ≤ I

OUT

≤ 4.6A , 4.35V≤ VIN ≤ 12V

2.82

2.79

2.850

2.850

2.88

2.91

V

AMS1585-3.0

0 ≤ I

OUT

≤ 4.6A , 4.5V ≤ VIN ≤ 12V

2.970

2.940

3.000

3.000

3.300

3.360

V
V

AMS1585-3.3

0 ≤ I

OUT

≤ 4.6A , 4.75V ≤ VIN ≤ 12V

3.267

3.235

3.300

3.300

3.333

3.365

V
V

AMS1585-3.5

0 ≤ I

OUT

≤ 4.6A , 5V ≤ VIN ≤ 12V

3.465

3.430

3.500

3.500

3.535

3.570

V
V

AMS1585-5.0

0 ≤ I

OUT

≤ 4.6A , 6.5V ≤ VIN ≤ 12V

4.950

4.900

5.000

5.000

5.050

5.100

V
V

Line Regulation AMS1585/-1.5/-2.5/

-2.85/-3.0/-3.3/-3.5/-5.0

I

LOAD

= 10 mA , 1.5V≤ (VIN - V

OUT

) ≤ 12V

0.3

0.6

10

10

mV
mV

Load Regulation
(Notes 2, 3)

AMS1585

(VIN - V

OUT

) =3V, 10mA ≤ I

OUT

≤ 4.6A

0.1

0.2

.03

.04

%
%

AMS1585-1.5

VIN = 5V, 0 ≤ I

OUT

≤ 4.6A

3

6

12

20

mV
mV

AMS1585-2.5

VIN = 5V, 0 ≤ I

OUT

≤ 4.6A

3

6

12

20

mV
mV

AMS1585-2.85

VIN = 5V, 0 ≤ I

OUT

≤ 4.6A

3

6

12

20

mV
mV

AMS1585-3.0

VIN = 5V, 0 ≤ I

OUT

≤ 4.6A

3

6

12

20

mV
mV

AMS1585-3.3

VIN = 5V, 0 ≤ I

OUT

≤ 4.6A

3

7

15

25

mV
mV

AMS1585-3.5

VIN = 5.25V, 0 ≤ I

OUT

≤ 4.6A

3

6

15

25

mV
mV

AMS1585-5.0

VIN = 8V, 0 ≤ I

OUT

≤ 4.6A

5

10

20

35

mV
mV

Dropout Voltage
(V

IN

- V

OUT

)

AMS1585/-1.5/-2.5/

-2.85/-3.0/-3.3/-3.5/-5.0

∆V

OUT

, ∆V

REF

= 1%, I

OUT

= 4.6A (Note 4)

1.2 1.35

V

Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone [phone] Fax [phone]

AMS1585

ELECTRICAL CHARACTERISTICS

Electrical Characteristics at I

OUT

= 0 mA, and TJ = +25°C unless otherwise specified.

Parameter Device Conditions Min Typ Max Units

Current Limit AMS1585/-1.5/-2.5/

-2.85/-3.0/-3.3/-3.5/-5.0

(VIN - V

OUT

) = 5V

5 5.5

A

Minimum Load
Current

AMS1585 (VIN - V

OUT

) = 12V (Note 5)

7 10

mA

Quiescient Current AMS1585/-1.5/-2.5/

-2.85/-3.0/-3.3/-3.5/-5.0

VIN ≤ 12V

10

mA

Ripple Rejection AMS1585

f =120Hz , C

OUT

= 25µF Tantalum, I

OUT

= 4.6A,

(VIN-V

OUT

) = 3V, C

ADJ

=25µF

60 75

dB

AMS1585-1.5

f =120Hz , C

OUT

= 25µF Tantalum, I

OUT

= 4.6A,

VIN = 4.5V

60 72

dB

AMS1585-2.5

f =120Hz , C

OUT

= 25µF Tantalum, I

OUT

= 4.6A,

VIN = 5.5V

60 72

dB

AMS1585-2.85

f =120Hz , C

OUT

= 25µF Tantalum, I

OUT

= 4.6A,

VIN = 6V

60 72

dB

AMS1585-3.0

f =120Hz , C

OUT

= 25µF Tantalum, I

OUT

= 4.6A

VIN = 6V

60 72

dB

AMS1585-3.3

f =120Hz , C

OUT

= 25µF Tantalum, I

OUT

= 4.6A

VIN = 6.3V

60 72

dB

AMS1585-3.5

f =120Hz , C

OUT

= 25µF Tantalum, I

OUT

= 4.6A

VIN = 6.5V

60 72

dB

AMS1585-5.0

f =120Hz , C

OUT

= 25µF Tantalum, I

OUT

= 4.6A

VIN = 8V

60 68

dB

Thermal Regulation AMS1585 TA = 25°C, 30ms pulse 0.008 0.04 %W
Adjust Pin Current AMS1585

10mA ≤ I

OUT

≤ 4.6A , 1.5V≤ (VIN - V

OUT

) ≤ 12V

40

120

µA
µA

Adjust Pin Current
Change

AMS1585

10mA ≤ I

OUT

≤ 4.6A , 1.5V≤ (VIN - V

OUT

) ≤12V

0.2 5

µA

Temperature Stability

0.5

%
Long Term Stability TA =125°C, 1000Hrs 0.3 1 %
RMS Output Noise

(% of V

OUT

)

TA = 25°C , 10Hz ≤ f ≤ 10kHz

0.003 %

Thermal Resistance
Junction-to-Case

M Package: Control Circuitry/ Power Transistor
T Package: Control Circuitry/ Power Transistor

1.5/4.0

1.5/4.0

°C/W
°C/W

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: Line and Load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the input/output

differential and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range.

Note 3: See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant

junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead ~1/8” from the package.

Note 4: Dropout voltage is specified over the full output current range of the device.
Note 5: Minimum load current is defined as the minimum output current required to maintain regulation. When (V

IN

- V

OUT

) = 12V the device is guaranteed

to regulate if the output current is greater than 10mA.