Ver: 1.4

Apr 11, 2005

TEL: 886-3-5788833

http://www.gmt.com.tw

2

G905

Global Mixed-mode Technology Inc.

Absolute Maximum Ratings

(Note 1)

Input Voltage…………………………………………...7V

Power Dissipation Internally Limited……….…...(Note2)

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

Storage Temperature Range..……-65°C

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

SOT-89…..……………………….….……….…173°C/W

SOT-89…..……………………….….….……..…25°C/W

Note (1): See Recommended Minimum Footprint

Operating Conditions

(Note 1)

Input Voltage………………………….……..…3.3V ~ 6V

Temperature Range………………..…-40°C

Electrical Characteristics

PARAMETER

CONDITION

MIN

TYP

MAX

UNIT

Output Voltage

2.45

2.5

2.55

V

Line Regulation

---

15

---

mV

Load Regulation

---

10

---

mV

Quiescent Current

---

0.3

---

mA

Ripple Rejection

---

47

---

dB

---

800

---

Dropout Voltage

---

400

---

mV

Output Current

Minimum

footprint

---

600

---

mA

Short Circuit Current

---

0.65

---

A

Current Limit

---

0.8

---

A

Over Temperature

---

145

---

°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.

Note2:

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

G905 in SOT-89 (T2) package,

package, it can see “Typical Performance Characteristics” (Safe Operating Area).

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

further reductions in input voltage. Measured when the

output drops 100mV 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.