AZ1085S-5.0TR - BCD Semiconductor

3A LOW DROPOUT LINEAR REGULATOR AZ1085

Data Sheet

1

Apr. 2005 Rev. 1. 1 BCD Semiconductor Manufacturing Limited

General Description

The AZ1085 is a series of low dropout positive voltage

regulators with a maximum dropout of 1.5V at 3A of

load current.

The series features on-chip thermal shutdown. It also

includes a bandgap reference and a current limiting cir-

cuit.

The AZ1085 is available in 1.5V, 1.8V, 2.5V, 2.85V,

3.3V, 5.0V and adjustable versions. The fixed versions

integrate the adjust resistors. The adjustable version

can set the output voltage with two external resistors.

The AZ1085 series is available in standard packages of

TO-263-2L, TO-263-3L, TO -220 and TO-252.

Features

·Low Dropout Voltage: Typical 1.3V at 3A

·Current Limiting and Thermal Protection

·Output Current: 3A

·Current Limit: 4.5A

·Operating Junction Temperature: 0 to 125oC

·Line Regulation: 0.015% (Typical)

·Load Regulation: 0.1% (Typical)

Applications

·High Efficiency Linear Regulators

·Battery Charger

·Post Regulation for Switching Supplies

·Microprocessor Supply

·Mother Board Power Supplies

·DVD - Video Player

·Telecom Equipment

·Set Top boxes and Web Boxes Modules' Supply

Figure 1. Package Types of AZ1085

TO-252 TO-220TO-263-3L TO-263-2L

3A LOW DROPOUT LINEAR REGULATOR AZ1085

Data Sheet

2

Apr. 2005 Rev. 1. 1 BCD Semiconductor Manufacturing Limited

Figure 2. Pin Configuration of AZ1085 (Top View)

Pin Configuration

Functional Block Diagram

Figure 3. Functional Block Diagram of AZ1085

T Package

(TO-220)

S Package

(TO-263-3L)

INPUT

OUTPUT

ADJ/GND

1

2

3

1

2

3

ADJ/GND

OUTPUT

D Package

(TO-252)

1

2

3

ADJ/GND

OUTPUT

INPUT

S Package

(TO-263-2L)

ADJ/GND

INPUT

1

2

3

OUTPUT (TAB)

Thermal

Protection +

-

For Adjustable Output, disconnect A1 and A2, connect B

INPUT

OUTPUT

ADJ/

GND

A1 A2

B

For Fixed Ou tput, connect A1 and A2, disconnect B

3A LOW DROPOUT LINEAR REGULATOR AZ1085

Data Sheet

3

Apr. 2005 Rev. 1. 1 BCD Semiconductor Manufacturing Limited

Circuit Type

Package

D: TO-252

ADJ: Adjustable Output

1.5: Fixed Output 1.5V

1.8: Fixed Output 1.8V

2.5: Fixed Output 2.5V

3.3: Fixed Output 3.3V

5.0: Fixed Output 5.0V

E1: Lead Free

Blank: Tin Lead

AZ1085 -

TR: Tape and Reel

Blank: Tube

T: TO-220

S: TO-263-3L

S2: TO-263-2L

2.85: Fixed Output 2.85 V

Package Tempera-

ture Range Part Number Marking ID Packing

Type

Tin Lead Lead Free Tin Lead Lead Free

TO-252 0 to 125oC

AZ1085D-ADJ AZ1085D-ADJE1 AZ1085D-ADJ AZ1085D-ADJE1 Tube

AZ1085D-ADJTR AZ1085D-ADJTRE1 AZ1085D-ADJ AZ1085D-ADJE1 Tape & Reel

AZ1085D-1.5 AZ1085D-1.5E1 AZ1085D-1.5 AZ1085D-1.5E1 Tube

AZ1085D-1.5TR AZ1085D-1.5TRE1 AZ1085D-1.5 AZ1085D-1.5E1 Tape & Reel

AZ1085D-1.8 AZ1085D-1.8E1 AZ1085D-1.8 AZ1085D-1.8E1 Tube

AZ1085D-1.8TR AZ1085D-1.8TRE1 AZ1085D-1.8 AZ1085D-1.8E1 Tape & Reel

AZ1085D-2.5 AZ1085D-2.5E1 AZ1085D-2.5 AZ1085D-2.5E1 Tube

AZ1085D-2.5TR AZ1085D-2.5TRE1 AZ1085D-2.5 AZ1085D-2.5E1 Tape & Reel

AZ1085D-2.85 AZ1085D-2.85E1 AZ1085D-2.85 AZ1085D-2.85E1 Tube

AZ1085D-2.85TR AZ1085D-2.85TRE1 AZ1085D-2.85 AZ1085D-2.85E1 Tape & Reel

AZ1085D-3.3 AZ1085D-3.3E1 AZ1085D-3.3 AZ1085D-3.3E1 Tube

AZ1085D-3.3TR AZ1085D-3.3TRE1 AZ1085D-3.3 AZ1085D-3.3E1 Tape & Reel

AZ1085D-5.0 AZ1085D-5.0E1 AZ1085D-5.0 AZ1085D-5.0E1 Tube

AZ1085D-5.0TR AZ1085D-5.0TRE1 AZ1085D-5.0 AZ1085D-5.0E1 Tape & Reel

TO-220 0 to 125oC

AZ1085T-ADJ AZ1085T-ADJE1 AZ1085T-ADJ AZ1085T-ADJE1 Tube

AZ1085T-1.5 AZ1085T-1.5E1 AZ1085T-1.5 AZ1085T-1.5E1 Tube

AZ1085T-1.8 AZ1085T-1.8E1 AZ1085T-1.8 AZ1085T-1.8E1 Tube

AZ1085T-2.5 AZ1085T-2.5E1 AZ1085T-2.5 AZ1085T-2.5E1 Tube

AZ1085T-2.85 AZ1085T-2.85E1 AZ1085T-2.85 AZ1085T-2.85E1 Tube

AZ1085T-3.3 AZ1085T-3.3E1 AZ1085T-3.3 AZ1085T-3.3E1 Tube

AZ1085T-5.0 AZ1085T-5.0E1 AZ1085T-5.0 AZ1085T-5.0E1 Tube

Ordering Information

3A LOW DROPOUT LINEAR REGULATOR AZ1085

Data Sheet

4

Apr. 2005 Rev. 1. 1 BCD Semiconductor Manufacturing Limited

Package Tempera-

ture Range Part Number Marking ID Packing

Type

Tin Lead Lead Free Tin Lead Lead Free

TO-263-3L 0 to 125oC

AZ1085S-ADJ AZ1085S-ADJE1 AZ1085S-ADJ AZ1085S-ADJE1 Tube

AZ1085S-ADJTR AZ1085S-ADJTRE1 AZ1085S-ADJ AZ1085S-ADJE1 Tape & Reel

AZ1085S-1.5 AZ1085S-1.5E1 AZ1085S-1.5 AZ1085S-1.5E1 Tube

AZ1085S-1.5TR AZ1085S-1.5TRE1 AZ1085S-1.5 AZ 1085S-1.5E1 Tape & Reel

AZ1085S-1.8 AZ1085S-1.8E1 AZ1085S-1.8 AZ1085S-1.8E1 Tube

AZ1085S-1.8TR AZ1085S-1.8TRE1 AZ1085S-1.8 AZ 1085S-1.8E1 Tape & Reel

AZ1085S-2.5 AZ1085S-2.5E1 AZ1085S-2.5 AZ1085S-2.5E1 Tube

AZ1085S-2.5TR AZ1085S-2.5TRE1 AZ1085S-2.5 AZ 1085S-2.5E1 Tape & Reel

AZ1085S-2.85 AZ1085S-2.85E1 AZ1085S-2.85 AZ1085S-2.85E1 Tube

AZ1085S-2.85TR AZ1085S-2.85TRE1 AZ1085S-2.85 AZ1085S-2.85E1 Tape & Reel

AZ1085S-3.3 AZ1085S-3.3E1 AZ1085S-3.3 AZ1085S-3.3E1 Tube

AZ1085S-3.3TR AZ1085S-3.3TRE1 AZ1085S-3.3 AZ 1085S-3.3E1 Tape & Reel

AZ1085S-5.0 AZ1085S-5.0E1 AZ1085S-5.0 AZ1085S-5.0E1 Tube

AZ1085S-5.0TR AZ1085S-5.0TRE1 AZ1085S-5.0 AZ 1085S-5.0E1 Tape & Reel

TO-263-2L 0 to 125oC

AZ1085S2-ADJ AZ1085S2-ADJE1 AZ1085S2-ADJ AZ1085S2-ADJE1 Tube

AZ1085S2-ADJTR AZ1085S2-ADJTRE1 AZ1085S2-ADJ AZ1085S2-ADJE1 Tape & Reel

AZ1085S2-1.5 AZ1085S2-1.5E1 AZ1085S2-1.5 AZ1085S2-1.5E1 Tube

AZ1085S2-1.5TR AZ1085S2-1.5TRE1 AZ1085S2-1.5 AZ1085S2-1.5E1 Tape & Reel

AZ1085S2-1.8 AZ1085S2-1.8E1 AZ1085S2-1.8 AZ1085S2-1.8E1 Tube

AZ1085S2-1.8TR AZ1085S2-1.8TRE1 AZ1085S2-1.8 AZ1085S2-1.8E1 Tape & Reel

AZ1085S2-2.5 AZ1085S2-2.5E1 AZ1085S2-2.5 AZ1085S2-2.5E1 Tube

AZ1085S2-2.5TR AZ1085S2-2.5TRE1 AZ1085S2-2.5 AZ1085S2-2.5E1 Tape & Reel

AZ1085S2-2.85 AZ1085S2-2.85E1 AZ1085S2-2.85 AZ1085S2-2.85E1 Tube

AZ1085S2-2.85TR AZ1085S2-2.85 TRE1 AZ1085S2-2.85 AZ1085S2-2.85E1 Tape & Reel

AZ1085S2-3.3 AZ1085S2-3.3E1 AZ1085S2-3.3 AZ1085S2-3.3E1 Tube

AZ1085S2-3.3TR AZ1085S2-3.3TRE1 AZ1085S2-3.3 AZ1085S2-3.3E1 Tape & Reel

AZ1085S2-5.0 AZ1085S2-5.0E1 AZ1085S2-5.0 AZ1085S2-5.0E1 Tube

AZ1085S2-5.0TR AZ1085S2-5.0TRE1 AZ1085S2-5.0 AZ1085S2-5.0E1 Tape & Reel

BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.

Ordering Information (Continued)

3A LOW DROPOUT LINEAR REGULATOR AZ1085

Data Sheet

5

Apr. 2005 Rev. 1. 1 BCD Semiconductor Manufacturing Limited

Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to

the device. These are stress ratings only, and functional operation of the device at these or any other conditions

beyond those indicated under"Recommend ed Operating Con dit ions" is n ot impl ied. Exposu re to "Absolute Max-

imum Ratings" for extended peri ods may affect device reliability.

Recommended Operating Conditions

Parameter Symbol Min Max Unit

Operating Junction Temperature TJ 150 oC

Storage Temperature TS -65 150 oC

Lead Temperature (Soldering, 10 sec.) TLEAD 300 oC

ESD (Human Body Model) ESD 2000 V

Parameter Symbol Min Max Unit

Input Volt age VIN 12 V

Operating Junction Temperature Range TJ0 125 oC

Absolute Maximum Ratings (Note 1)

3A LOW DROPOUT LINEAR REGULATOR AZ1085

Data Sheet

6

Apr. 2005 Rev. 1. 1 BCD Semiconductor Manufacturing Limited

Electrical Characteristics

Parameter Symbol Conditions Min Typ Max Unit

Reference Voltage VREF AZ1085-ADJ,

IOUT=10mA,VIN -VOUT = 3V, TJ = 25oC,

10mA ≤ IOUT ≤ 3A, 1.5V ≤ VIN - VOUT ≤

5V

1.238

1.225

1.250

1.262

1.275

V

Output Voltage VOUT

AZ1085-1.5,

IOUT =0mA, VIN = 4.5V, TJ = 25oC,

10mA ≤ IOUT ≤ 3A, 3.1V ≤ VIN ≤ 6V

1.485

1.47

1.5

1.5 1.515

1.53

V

AZ1085-1.8,

IOUT = 0mA, VIN = 4.8V, TJ = 25oC,

10mA ≤ IOUT ≤ 3A, 3.4V ≤ VIN ≤ 7V

1.782

1.764

1.8

1.818

1.836

V

AZ1085-2.5,

IOUT = 0mA, VIN = 5.5V, TJ = 25oC,

10mA ≤ IOUT ≤ 3A, 4.1V ≤ VIN ≤ 7V

2.475

2.45

2.5

2.525

2.55

V

AZ1085-2.85,

IOUT = 0mA, VIN = 6V, TJ = 25oC,

10mA ≤ IOUT ≤ 3A, 4.5V ≤ VIN ≤ 8V

2.821

2.793

2.85

2.879

2.907

V

AZ1085-3.3,

IOUT = 0mA, VIN = 6.3V, TJ = 25oC,

10mA ≤ IOUT ≤ 3A, 4.9V ≤ VIN ≤ 8V

3.267

3.234

3.3

3.333

3.366

V

AZ1085-5.0,

IOUT = 0mA, VIN = 8V, TJ = 25oC,

10mA ≤ IOUT ≤ 3A, 6.6V ≤ VIN ≤ 10V

4.95

4.9

5

5.05

5.1

V

Line Regulation ∆VOUT

AZ1085-ADJ, IOUT = 10mA,

2.85V ≤ VIN ≤ 10V 0.015

0.035 0.2

0.2 %

AZ1085-1.5, IOUT = 10mA,

3.1V ≤ VIN ≤ 10V 0.5

1 6

6 mV

AZ1085-1.8, IOUT = 10mA,

3.4V ≤ VIN ≤ 10V 0.5

1 6

6 mV

AZ1085-2.5, IOUT = 10mA,

4.1V ≤ VIN ≤ 10V 0.5

1 6

6 mV

AZ1085-2.85, IOUT = 10mA,

4.5V ≤ VIN ≤ 10V 0.5

1 6

6 mV

AZ1085-3.3, IOUT = 10mA,

4.9V ≤ VIN ≤ 10V 0.5

1 6

6 mV

Typicals and limits appearing in normal type apply for T

J

= 25

o

C. Limits appearing in

Boldface

type apply over

the entire operating junction temperature range 0 to 125oC.

3A LOW DROPOUT LINEAR REGULATOR AZ1085

Data Sheet

7

Apr. 2005 Rev. 1. 1 BCD Semiconductor Manufacturing Limited

Electrical Characteristics (Continued)

Parameter Symbol Conditions Min Typ Max Unit

AZ1085-5.0, IOUT = 10mA,

6.6V ≤ VIN ≤ 10V 0.5

1 10

10 mV

Load Regulation ∆VOUT

AZ1085-ADJ, 0mA ≤ IOUT ≤ 3A,

VIN - VOUT = 3V 0.1

0.2 0.3

0.4 %

AZ1085-1.5, 0mA ≤ IOUT ≤ 3A,

VIN - VOUT = 3V 3

7 15

20 mV

AZ1085-1.8, 0mA ≤ IOUT ≤ 3A,

VIN - VOUT = 3V 3

7 15

20 mV

AZ1085-2.5, 0mA ≤ IOUT ≤ 3A,

VIN - VOUT = 3V 3

7 15

20 mV

AZ1085-2.85, 0mA ≤ IOUT ≤ 3A,

VIN - VOUT = 3V 3

7 15

20 mV

AZ1085-3.3, 0mA ≤ IOUT ≤ 3A,

VIN - VOUT = 3V 3

7 15

20 mV

AZ1085-5.0, 0mA ≤ IOUT ≤ 3A,

VIN - VOUT = 3V 5

10 20

35 mV

Dropout Voltage IO = 3A, ∆VREF, ∆VOUT = 1% 1.3 1.5 V

Current Limit ILIMIT VIN - VOUT = 3V, 3.2 4.5 A

Minimum Load Current VIN = 10V (AZ1085-ADJ) 3 10 mA

Quiescent Current VIN = 10V (AZ1085) 5 10 mA

Ripple Rejection fRIPPLE = 120Hz, COUT = 25µF Tantalum,

IOUT = 3A, VIN - VOUT = 3V 60 72 dB

Adjust Pin Current VIN = 4.25V, IOUT = 10mA 55 120 µA

Adjust Pin Current

Change 10mA ≤ IOUT ≤ 3A,

1.5V ≤ VIN -VOUT ≤ 6V 0.2 5 µA

Long Term Stability TA = 125oC, 1000Hrs 0.5 %

Temperature Stability IOUT = 10mA, VIN - VOUT = 1.5V 0.5 %

RMS Noise

(% of VOUT)TA = 25oC, 10Hz ≤ f ≤ 10kHz 0.003 %

Thermal Resi stance

Junction-to-Case θJC

TO-263

TO-220 3

3 oC / W

Typi cals and lim its appearing in normal type apply for TJ = 25oC. Limits appearing in Boldface type apply over

the entire operating junction temperature range 0 to 125oC.

3A LOW DROPOUT LINEAR REGULATOR AZ1085

Data Sheet

8

Apr. 2005 Rev. 1. 1 BCD Semiconductor Manufacturing Limited

Typical Performance Characteristics

Figure 4. Line Regulation vs. Temperature

Figure 6. Dropout Voltage vs. Temperature

0 25 50 75 100 125

1.00

1.05

1.10

1.15

1.20

Dropout Voltage (V)

TA(oC)

0 25 50 75 100 125

2.47

2.48

2.49

2.50

2.51

2.52

2.53

Output Voltage (V)

TA (oC)

Figure 7. Output Voltage vs. Temperature

0 25 50 75 100 125

-1

0

1

2

3

4

5

Line Regulation (mV)

TA (oC)

0 25 50 75 100 125

-5

-4

-3

-2

-1

0

1

2

3

4

5

Load Regulation (mV)

TA (oC)

Figure 5. Load Regulation vs. Temperature

3A LOW DROPOUT LINEAR REGULATOR AZ1085

Data Sheet

9

Apr. 2005 Rev. 1. 1 BCD Semiconductor Manufacturing Limited

Typical Performance Characteristics (Continued)

Figure10. Reference Voltage vs. Temperature

Figure 8. Short Circuit Current vs. Dropout Voltage

024681012

0

1

2

3

4

5

6

7

Short Circuit Current (A)

Dropout Voltage (V)

0 25 50 75 100 125

1.20

1.21

1.22

1.23

1.24

1.25

1.26

1.27

1.28

Reference Voltage (V)

TA (oC)

Figure 11. Load Transient Response

0.0 0.5 1.0 1.5 2.0 2.5 3.0

0.80

0.85

0.90

0.95

1.00

1.05

1.10

1.15

1.20

1.25

1.30

Dropout Voltage (V)

Output Current (A)

Figure 9. Dropout Voltage vs. Output Current

3A LOW DROPOUT LINEAR REGULATOR AZ1085

Data Sheet

10

Apr. 2005 Rev. 1. 1 BCD Semiconductor Manufacturing Limited

Figure 12. Line Transient Response

Typical Performance Characteristics (Continued)

3A LOW DROPOUT LINEAR REGULATOR AZ1085

Data Sheet

11

Apr. 2005 Rev. 1. 1 BCD Semiconductor Manufacturing Limited

Figure 13. Typi cal Applications of AZ1085

AZ1085-ADJ

VIN VOUT

ADJ

VIN

10µF

Tantalum 120Ω

R2

22µF

Tantalum

++

VIN

AZ1085-5.0

VIN VOUT

GND

10µF

Tantalum 22µF

Tantalum

VOUT

R1

VOUT=VREF* (1+R2/R1) + IADJ * R2

Typical Application

3A LOW DROPOUT LINEAR REGULATOR AZ1085

Data Sheet

12

Apr. 2005 Rev. 1. 1 BCD Semiconductor Manufacturing Limited

Mechanical Dimensions

Unit: mm(inch)

φ3.560(0.140)

14.230(0.560)

1.160(0.046)

0.813(0.032)

8.763(0.345)

2.540(0.100) 0.356(0.014)

2.080(0.082)

3°

7°

3.560(0.140)

7°

9.660(0.380)

0.550(0.022)

60°

0.381(0.015)

2.580(0.102)

60°

8.520(0.335)

φ1.500(0.059)

0.200(0.008)

1.850(0.073)

2.540(0.100)

0.381(0.015)

0.406(0.016)

3.380(0.133)

10.660(0.420)

4.060(0.160) 1.350(0.053)

27.880(1.098)

30.280(1.192)

9.520(0.375)

16.510(0.650)

4.820(0.190)

2.880(0.113)

1.760(0.069)

TO-220

3A LOW DROPOUT LINEAR REGULATOR AZ1085

Data Sheet

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Apr. 2005 Rev. 1. 1 BCD Semiconductor Manufacturing Limited

Mechanical Dimensions (Continued)

Unit: mm(inch)

7°

3°7°

8.640(0.340)

9.650(0.380)

0.990(0.039)

0.510(0.020)

2.540(0.100)

1.150(0.045)

9.650(0.380)

3°

14.760(0.581)

8.840(0.348)

2.640(0.104)

0.020(0.001)

8°

2°

0°

6°

0.380(0.015)

2.390(0.094)

0.360(0.014)

2.200(0.087)

70°

10.290(0.405)

4.070(0.160)

4.820(0.190)

1.390(0.055)

1.150(0.045)

1.390(0.055)

2.540(0.100)

1.270(0.050)

1.390(0.055)

2.690(0.106)

15.740(0.620)

0.250(0.010)

2.700(0.106)

0.400(0.016)

5.600(0.220)

7.420(0.292)

7.980(0.314)

2.540(0.100)

TO-263-3L

3A LOW DROPOUT LINEAR REGULATOR AZ1085

Data Sheet

14

Apr. 2005 Rev. 1. 1 BCD Semiconductor Manufacturing Limited

Mechanical Dimensions (Continued)

TO-263-2L Unit: mm(inch)

7°

3°7°

8.640(0.340)

9.650(0.380)

0.990(0.039)

0.510(0.020)

2.540(0.100)

1.150(0.045)

9.650(0.380)

3°

14.760(0.581)

8.840(0.348)

2.640(0.104)

0.020(0.001)

8°

2°

0°

6°

0.380(0.015)

2.390(0.094)

0.360(0.014)

2.200(0.087)

70°

10.290(0.405)

4.070(0.160)

4.820(0.190)

1.390(0.055)

1.150(0.045)

1.390(0.055)

2.540(0.100)

1.270(0.050)

1.390(0.055)

2.690(0.106)

15.740(0.620)

0.250(0.010)

2.700(0.106)

0.400(0.016)

5.600(0.220)

7.420(0.292)

7.980(0.314)

2.540(0.100)

1.500(0.059)

3A LOW DROPOUT LINEAR REGULATOR AZ1085

Data Sheet

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Apr. 2005 Rev. 1. 1 BCD Semiconductor Manufacturing Limited

Mechanical Dimensions (Continued)

TO-252 Unit: mm(inch)

1°

7°

1.400(0.055)

0.020(0.001)

0.460(0.018)

2.240(0.088)

0.650(0.026)

9.500(0.374)

0.750(0.030)

0.640(0.025)

5.230(0.206) 6.380(0.251)

2.600(0.102)5.360(0.211)

2.180(0.086)

0.600(0.024)

5°5°

8°

0.400(0.016)

0.510(0.020)

0.480(0.019)

1.080(0.043)

×45°

6.680(0.263)

0.580(0.023)

2.380(0.094)

5.430(0.214)

0.950(0.037)

10.100(0.398)

2.340(0.092) 2.240(0.088)

2.340(0.092)

0.780(0.031)

0.850(0.033)

1.760(0.069)

5.560(0.219)

1.320(0.052)

0.540(0.021)

0.120(0.005)

3.000(0.118)

2.90°

3.10°2.90°

3.10°

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