Global Mixed-mode Technology Inc.
G9225
Absolute Maximum Ratings
(Note 1) Operating Conditions
(Note 1)
Input Voltage……………………….…….………..……..7V Input Voltage…………………………….………..2.5V~7V
VEN Voltage…………………………….……….…VIN+0.3V
Power Dissipation Internally Limited (Note 2)
Temperature Range………….….........-20°C ≤ TA ≤85°C
Maximum Junction Temperature.………….….……..150°C
Storage Temperature Range……....-65°C ≤ TJ ≤+150°C
Lead Temperature, Time for Wave Soldering
TO220 Package……….…….….……….….….260°C, 10s
Continuous Power Dissipation (TA = +25°C)
TO220 No heatsink…….……….…………….…..…..1.5W
TO220 with infinite heatsink…………………….….…15W
Electrical Characteristics
VIN =5V, IO = 0.5A, CIN = 4.7µF, COUT =47µF, TA = TJ = 25°C unless otherwise specified [Note 3]
PARAMETER
Output Voltage
SYMBOL
CONDITION
MIN
2.44
---
TYP MAX
UNIT
V
IO =0.5A
2.5
0.5
0.5
2.5
45
2.56
2
Line Regulation
3.3V < VIN < 7V, IO = 10mA
50mA < IO < 2A
%
Load Regulation
---
2
%
Quiescent Current
Ripple Rejection
VIN = 5V
---
5
mA
dB
V
fi = 120Hz, 1VP-P, IO = 100mA
IO = 2A
---
---
0.7
---
---
---
0.8
20
20
Dropout Voltage
---
0.5
1.2
150
---
Short Circuit Current
Over Temperature
Disable Voltage High
Disable Voltage Low
Disable Bias Current High
Disable Bias Current Low
---
A
---
°C
V
VENH
VENL
IENH
IENL
Output Active
Output Disabled
VEN = 2.7V
2
---
---
V
---
---
µA
µA
VEN 0.4V
---
---
Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Con-
ditions are conditions under which the device functions but the specifications might not be guaranteed. For
guaranteed specifications and test conditions see the Electrical Characteristics.
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. For the TO220 package, θJA is 60°C/W (No heat sink).
Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
The type of output capacitor should be tantalum or aluminum.
Note 1:
Note2:
Note3:
Note4:
Definitions
Dropout Voltage
Load Regulation
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.
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
temperature is not significantly affected.
Maximum Power Dissipation
Line Regulation
The maximum total device dissipation for which the
regulator will operate within specifications.
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 affected.
Quiescent Bias Current
Current which is used to operate the regulator chip
and is not delivered to the load.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 0.2 Preliminary
Jun 28, 2004
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