G1084T33T - Global Mixed-Mode Technology, Inc.

Ver: 1.4

Jun 14, 2007 TEL: 886-3-5788833

http://www.gmt.com.tw

G1084

Global Mixed-mode Technology Inc.

5A Adjustable Low-Dropout Linear Regulator

Features

 Available in Adjust Version

 TO-220, TO-252,TO-263 and TO-263T

Package

 Internal Short Circuit Current Limiting

 Internal Over Temperature Protection

 Output Current 5A

Applications

 Post Regulation for Switching DC/DC Con-

verter

 High Efficiency Linear Regulator

 Battery Charger

 Battery Powered Instrumentation

 Motherboard

General Description

The G1084 is a low dropout linear regulator with a

dropout of 1.2V at 5A of load current. It is avail-

able in an adjustable version, which can set the

output from 1.25V to 5V with only two external

resistors.

The G1084 provides over temperature and over

current protection circuits to prevent it from being

damaged by abnormal operating conditions.

The G1084 is available in TO-220, TO-252, TO-263

and TO-263T packages. A minimum of 220µF

tantalum electrolytic capacitor is required at the

output to improve the transient response and sta-

bility.

Ordering Information

PIN OPTION ORDER

NUMBER ORDER NUMBER

(Pb free) MARKING TEMP. RANGE PACKAGE 1 2 3

G1084T33T G1084T33Tf G1084 -40°C to +85°C TO-220 GND/ADJ VOUT V

G1084T43U G1084T43Uf G1084 -40°C to +85°C TO-252 GND/ADJ VOUT V

G1084T53U G1084T53Uf G1084 -40°C to +85°C TO-263 GND/ADJ VOUT V

G1084TU3U G1084TU3Uf G1084 -40°C to +85°C TO-263T GND/ADJ VOUT V

* For other package types and pin options, please contact us at sales@gmt.com.tw

Note: T3: TO-220 T4: TO-252 T5: TO-263 TU: TO-263T (thin)

3: Bonding Code

U: Tape & Reel T: Tube

Package Type Typical Application

[Note 4]: Type of COUT

VIN G1084

220µF

VOUT

COUT

220µF

R2 R1

GND/ADJ

VIN VOUT

Top Vi ew

123

TO-252/

TO-263/TO-263T

TO-220

Top View VIN G1084

220µF

VOUT

COUT

220µF

R2 R1

GND/ADJ

VIN VOUT

Top Vi ew

123

TO-252/

TO-263/TO-263T

TO-220

Top View

Ver: 1.4

Jun 14, 2007 TEL: 886-3-5788833

http://www.gmt.com.tw

G1084

Global Mixed-mode Technology Inc.

Absolute Maximum Ratings (Note 1) Operating Conditions (Note 1)

Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V

Power Dissipation Internally Limited (Note 2)

Maximum Junction Temperature . . . . . . . . . . . . 150 °C

Storage Temperature Range . . .-65°C ≤ TJ ≤+150°C

Reflow Temperature (soldering, 10sec) . . . . . .260°C

Thermal Resistance Junction to Ambient, (θJA)

TO-252(1). . . . . . . . . . . . . . . . . . . . . . . . . . . . 85°C/W

TO-263(1) . . . . . . . . . . . . . . . . . . . . . . . . . . . .70°C/W

TO-263T(1) . . . . . . . . . . . . . . .. . . . . . . . . . . . 73°C/W

TO-220 No Heatsink . . . . . . . . . . . . . . . . . . 53°C/W

TO-220 with Infinite Heatsink(2). . . . . . . . . . . 23°C/W

Thermal Resistance Junction to Case, (θJC)

TO-220 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5°C/W

TO-252 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..8°C/W

TO-263 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5°C/W

TO-263T . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5°C/W

ESD Rating (Human Body Model). . . . . . . . . . . .2kV

(VIN-VADJ) Voltage . . . . . . . . . . . . . . . . . . . . . 2.5V~5.5V

Temperature Range . . . . . . . . . . . . . .-40°C≤TA≤ 85°C

Note (1): See Recommended Minimum Footprint

(2): Refer to heatsink package dimension.

Electrical Characteristics

Operating Conditions: VIN ≤ 5.5V, TA =TJ = 25°C unless otherwise specified. [Note3]

PARAMETER CONDITION MIN TYP MAX UNIT

Reference Voltage VIN - VOUT = 2V, IOUT = 10mA 1.225 1.250 1.275 V

Line Regulation (VOUT + 1.5V) < VIN < 5.5V, IOUT = 10mA --- 0.5 1 %

Load Regulation (VIN - VOUT) = 2V, 10mA < IOUT <5A --- 0.04 0.5 %

Dropout Voltage ΔVOUT = 2%, IOUT = 5A --- 1.3 1.5 V

Current Limit (VIN - VOUT) = 2V --- 5.4 --- A

Adjust Pin Current Change VIN - VOUT = 2V, 10mA < IOUT < 5A --- 0.15 --- µA

Minimum Load Current 1.5V < (VIN - VOUT) < 5.25V 10 --- --- mA

Quiescent Current VIN - VOUT = 2V --- 80 150 µA

Ripple Rejection f = 120Hz, COUT = 10µF Tantalum,

(VIN - VOUT) = 3V, IOUT = 1A --- 45 --- dB

Temperature Stability VIN = 4V, IO =10mA --- 0.3 --- %

RMS Output Noise (% of VOUT) TA = 25°C, 10Hz < f < 10kHz, ILOAD = 10mA --- 0.007 --- %

Thermal Shutdown Junction Temperature --- 150 --- °C

Thermal Shutdown Hysteresis --- 30 --- °C

Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Conditions are

conditions under which the device functions but the specifications might not be guaranteed. For guaranteed specifications

and test conditions see the Electrical Characteristics.

Note 2: The maximum power dissipation is a function of the maximum junction temperature, TJmax ; total thermal resistance, θJA,

and ambient temperature TA. The maximum allowable power dissipation at any ambient temperature is Tjmax-TA / θJA. If

this dissipation is exceeded, the die temperature will rise above 150°C and IC will go into thermal shutdown.

Note3: Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible.

Note4: The type of output capacitor should be tantalum or aluminum.

Ver: 1.4

Jun 14, 2007 TEL: 886-3-5788833

http://www.gmt.com.tw

G1084

Global Mixed-mode Technology Inc.

Definitions

Output Voltage

The G1084 provides an adjustable output voltage from

1.25V to 5V. with two external resistors. It can be for-

mulated as:

VOUT = 1.25V x (1+ R1 ) + IADJ x R2

IADJ = 80µA (TYP.)

Dropout Voltage

The input/output Voltage differential at which the

regulator output no longer maintains regulation against

further reductions in input voltage. Measured when the

output drops 2% below its nominal value. Dropout

voltage is affected by junction temperature, load cur-

rent and minimum input supply requirements.

Line Regulation

The change in output voltage for a change in input

voltage. The measurement is made under conditions

of low dissipation or by using pulse techniques such

that average chip temperature is not significantly af-

fected.

Load Regulation

The change in output voltage for a change in load

current at constant chip temperature. The measure-

ment is made under conditions of low dissipation or by

using pulse techniques such that average chip tem-

perature is not significantly affected.

Maximum Power Dissipation

The maximum total device dissipation for which the

regulator will operate within specifications.

Quiescent Bias Current

Current which is used to operate the regulator chip

and is not delivered to the load.

Ver: 1.4

Jun 14, 2007 TEL: 886-3-5788833

http://www.gmt.com.tw

G1084

Global Mixed-mode Technology Inc.

Typical Performance Characteristics

(VIN-VOUT = 3V, VOUT = 1.25V, CIN = 220µF, COUT = 220µF, TA=25°C, unless otherwise noted.)

10 100 1000 10000 100000 1000000

Frequency (Hz)

Ripple Rejection (dB)

625mA

(VIN-VOUT)>Vdropout

Vripple<0.5VP-P

COUT = 220µF

Line Transient Response

Short Circuit-Current

Ripple Rejection

1.225

1.230

1.235

1.240

1.245

1.250

1.255

1.260

1.265

1.270

1.275

2.533.544.555.56

VIN (V)

VOUT (V)

T = 25°C

T = -25°

Load T ransient Response

Output Noise

Line Regula tion

Ver: 1.4

Jun 14, 2007 TEL: 886-3-5788833

http://www.gmt.com.tw

G1084

Global Mixed-mode Technology Inc.

Typical Performance Characteristics (continued)

Dropout Voltage vs. IOUT Load Regulation

Output Voltage vs. Tempera ture

IL = 2.5A

Adj Pin Current vs. Temperature

0.5

1.5

01234

IOUT (A)

Dropout Vo ltag e (V)

T = 25°C

1.240

1.243

1.245

1.248

1.250

1.253

1.255

-50 -30 -10 10 30 50 70

Temperature (°C)

VOUT (V)

VIN = 5V

VIN = 3V

100

-50 -30 -10 10 30 50 70

Temperature (°C)

Adj Pin Current (µA)

VIN = 5V

VIN = 3V

-5

-3

-1

-50-30-1010305070

Temperature (°C)

Output Voltage Deviation (mV)

IL = 10mA~2.5A

VIN = 3V

VIN = 5V

IL = 2.5A

0.5

1.5

2.5

3.5

25 35 45 55 65 75 85

TAMB (°C)

Max. Dissipation Power (W)

A=0.1

A=0.2

A=0.3

A=0.4

A=0.5

A=1.0

A=1.5

A=2.0

A=2.5

A=3.0

A=3.5

A=4.0

A=4.5

A=5.0

G1084T43(TO-252) Max. Pow e r

Dissipation vs. TAMB (still air)

( Different PCB Top Copper Area )

Unit : in2

0.5

1.5

2.5

3.5

012345

PCB Top Copper Area (i n2)

Max. Dis sip at ion Pow er (W)

G1084T43(TO-252) Max. Powe r

Dissipation vs. PCB Top Copper

Area TAMB = 25°C ; Still Air

Ver: 1.4

Jun 14, 2007 TEL: 886-3-5788833

http://www.gmt.com.tw

G1084

Global Mixed-mode Technology Inc.

Typical Performance Characteristics (continued)

G 1084T33 (TO- 220) Max. Power

Dissi pation vs. Temper at ure

0.5

1.5

2.5

3.5

12345

P CB Top Copper A rea (in2)

Max. Dissipation Power (W

)

0.5

1.5

2.5

3.5

25 35 45 55 65 75 85

TAMB (°C)

Max. Diss i pati on P ower (W

)

A=1.0

A=1.5

A=2.0

A=2.5

A=3.0

A=3.5

A=4.0

A=4.5

A=5.0

25 35 45 55 65 75 85

Temperat ure (°C)

Max. Dissi pation Power (W

)

G 1084T53(TO - 263) M ax. Power

Diss i pat i on vs . PCB Top Copper

A r ea TAMB = 25°C ; Still Air

Unit : in 2

Heatsink

No Heats i nk

G 1084T53(TO -263) M ax. Power

Dis si pati on vs. TAMB (still air)

( Di f ferent PCB Top Copper A rea )

Ver: 1.4

Jun 14, 2007 TEL: 886-3-5788833

http://www.gmt.com.tw

G1084

Global Mixed-mode Technology Inc.

Recommended Minimum Footprint

Heatsink Package Dimension

TO-252 TO-263 TO-263T

Ver: 1.4

Jun 14, 2007 TEL: 886-3-5788833

http://www.gmt.com.tw

G1084

Global Mixed-mode Technology Inc.

Package Information

TO-220 (T3) Package

MILLIMETER INCH

SYMBOL MIN MAX MIN MAX

A 4.318 4.826 0.170 0.190

A1 2.46 2.72 0.097 0.107

b 0.69 0.94 0.027 0.037

b1 1.143 1.397 0.045 0.055

C 0.304 0.460 0.012 0.018

D 3.429 3.683 0.135 0.145

D1 8.53 9.04 0.336 0.356

d 2.62 2.87 0.103 0.113

E 9.906 10.40 0.390 0.410

E1 4.953 5.22 0.195 0.206

DIA 3.708 3.962 0.146 0.156

e 2.29 2.79 0.090 0.110

e1 4.83 5.33 0.190 0.210

F 1.143 1.397 0.045 0.055

L 13.589 14.351 0.535 0.565

I 3.56 4.06 0.140 0.16

DIA

E1 E1

DIA

E1 E1

Ver: 1.4

Jun 14, 2007 TEL: 886-3-5788833

http://www.gmt.com.tw

G1084

Global Mixed-mode Technology Inc.

TO-252 (T4) Package

MILLIMETERS INCHES

SYMBOL MIN. MAX. MIN. MAX.

A 2.190 2.400 0.086 0.094

A1 0.000 0.127 0.000 0.005

B 0.880 1.650 0.035 0.065

b 0.500 0.880 0.020 0.035

b1 0.700 0.900 0.028 0.035

C 0.430 0.580 0.017 0.023

C1 0.430 0.580 0.017 0.023

D 6.350 6.730 0.250 0.265

D1 5.200 5.460 0.205 0.215

E 5.400 6.220 0.213 0.245

e 2.300 TYP 0.091 TYP

e1 4.500 4.700 0.177 0.185

L 8.830 10.77 0.348 0.424

L1 2.550 2.900 0.100 0.114

L2 1.400 1.780 0.055 0.070

L3 0.350 1.020 0.014 0.040

V 3.800 4.320 0.150 0.170

Ver: 1.4

Jun 14, 2007 TEL: 886-3-5788833

http://www.gmt.com.tw

G1084

Global Mixed-mode Technology Inc.

TO-263 (T5) Package

MILLIMETER INCH

SYMBOL MIN MAX MIN MAX

A 4.470 4.670 0.176 0.184

A1 0.000 0.150 0.000 0.006

B 1.170 1.370 0.046 0.054

b 0.710 0.910 0.028 0.036

b1 1.170 1.370 0.046 0.054

c 0.310 0.530 0.012 0.021

c1 1.170 1.370 0.046 0.054

D 10.010 10.310 0.394 0.406

E 8.500 8.900 0.335 0.350

e 2.540 TYP 0.100 TYP

e1 4.980 5.180 0.196 0.204

L 15.050 15.450 0.593 0.608

L1 5.080 5.480 0.200 0.216

L2 2.340 2.740 0.092 0.108

L3 1.300 1.700 0.051 0.067

V 5.600 REF 0.220 REF

Ver: 1.4

Jun 14, 2007 TEL: 886-3-5788833

http://www.gmt.com.tw

G1084

Global Mixed-mode Technology Inc.

TO-263T (TU) Package

DIMENSIONS IN MILLIMETER DIMENSIONS IN INCH

SYMBOL MIN NOM MAX MIN NOM MAX

A 1.750 2.000 2.250 0.069 0.079 0.089

B 0.880 1.280 1.680 0.345 0.050 0.066

b 1.255 1.295 1.335 0.049 0.051 0.053

c 0.381 0.406 0.431 0.015 0.016 0.017

c1 0.356 0.406 0.456 0.014 0.016 0.018

D 9.660 10.160 10.660 0.380 0.400 0.420

D1 6.900 REF 0.272 REF

E 8.380 8.680 8.980 0.330 0.342 0.354

e ----- 2.540 ----- ----- 0.100 -----

e1 ----- 5.080 ----- ----- 0.200 -----

L 13.74 14.240 14.740 0.541 0.561 0.580

L1 ----- 4.280 ----- ----- 0.169 -----

L2 2.290 2.540 2.790 0.090 0.100 0.110

L3 ----- ----- 1.778 ----- ----- 0.070

V ----- 7.280 ----- ----- 0.287 -----

Taping Specification

PACKAGE Q’TY/REEL Q’TY/TUBE

TO-220 ----- 50 ea

TO-252 2,500 ea -----

TO-263 800 ea -----

TO-263T 1,500 ea -----

GMT Inc. does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and GMT Inc. reserves the right at any time without notice to change said circuitry and specifications.

Feed Direction

TO-252 Pack ag e Orientation Feed Direction

TO-263/TO-263 T Package Orientati on

Feed Direction

TO-252 Pack ag e Orientation Feed Direction

TO-263/TO-263 T Package Orientati on

Ac1