Ver: 0.5 Preliminary

Nov 12, 2004

TEL: 886-3-5788833

http://www.gmt.com.tw

2

G1085-XX

Global Mixed-mode Technology Inc.

Absolute Maximum Ratings

(Note 1)

Input Voltage…………………….………….…………8V

Power Dissipation Internally Limited

(Note 2)

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

Storage Temperature Range.……-65°C

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

Thermal Resistance Junction to Ambient

Thermal Resistance Junction to Case

TO-220,TO-263……..……………………………6°C/W

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

Operating Conditions

(Note 1)

Input Voltage……….……………………………2.2V~7V

Temperature Range…………….….-40°C

Electrical Characteristics

PARAMETER

CONDITION

MIN

TYP

MAX

UNIT

Output Voltage

-2%

2%

V

Line Regulation

---

0.1

1

%

Load Regulation

---

1

2

%

G1085-18

---

1

1.2

G1085-25

---

0.8

1

Dropout Voltage

G1085-33

---

0.65

0.85

V

Current Limit

---

5.5

---

A

Short Circuit Current

---

1

---

A

0.5

1.7

5

0.5

2.1

5

Quiescent Current

0.5

2.4

5

mA

Ripple Rejection

---

50

---

dB

TO-220; Recommended Minimum Footprint

---

92

---

Thermal Resistor Junction-to-Ambient

(No heat sink; No air flow)

TO-263; Recommended Minimum Footprint

---

92

---

°C/W

TO-220

---

6

---

Thermal Resistance Junction-to-Case

TO-263

---

6

---

°C/W

Thermal Shutdown

Junction Temperature

---

150

---

°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.

mal 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.

Definitions

Dropout Voltage

The input/output Voltage differential at which the regu-

lator output no longer maintains regulation against fur-

ther reductions in input voltage. Measured when the

output drops 2% below its nominal value. Dropout volt-

age is affected by junction temperature, load current

and minimum input supply requirements.

Line Regulation

The change in output voltage for a change in input volt-

age. The measurement is made under conditions of low

dissipation or by using pulse techniques such that av-

erage chip temperature is not significantly affected.

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.