
Ver: 1.0 
Mar 22, 2002 
TEL: 886-3-5788833 
http://www.gmt.com.tw 
2 
G901
Global Mixed-mode Technology Inc. 
Absolute Maximum Ratings     
(Note 1) 
Input Voltage………………………………….……….10V 
Power Dissipation Internally Limited          (Note2) 
Maximum Junction Temperature………….………150°C 
Storage Temperature Range..….…-65°C 
≤
 T
J
≤
+150°C 
Lead Temperature, Time for Wave Soldering 
SOT89 Package……..……..……………….....260°C, 4s 
Continuous Power Dissipation (T
A
 = + 25°C) 
SOT 89
(1)
………………………….…………………..0.5W 
Note 
(1)
: See Recommended Minimum Footprint. 
Operating Conditions           
(Note 1) 
Input Voltage…………………………...…………4V ~ 7V 
Temperature Range……………….…...0°C 
≤
 T
J
≤
125°C
Electrical Characteristics 
V
IN
 =5V, I
O
 = 300mA, C
IN
=1μF, C
OUT
 =10μF. All specifications apply for T
A
 = T
J
 = 25°C.[Note 3] 
PARAMETER 
Output Voltage
Line Regulation
Load Regulation
Output Impedance
Quiescent Current
Ripple Rejection
CONDITIONS 
MIN 
3.201 
TYP 
3.3 
3 
28 
102 
0.6 
42 
450 
50 
0.77 
150 
MAX 
3.399 
100 
UNITS 
V 
mV 
mV 
m
mA 
dB 
5mA < I
O
 <300mA
4V < V
IN
 < 6.5V, I
O
 = 50mA
10mA < I
O
 < 300mA
100mA DC and 100mA AC, f
O 
= 120Hz
V
IN
 = 5V
f
i
 = 120 Hz, 1V
P-P
, Io = 100mA
I
O
 = 300mA
I
O
 = 50mA
Dropout Voltage
mV 
Short Circuit Current
Over Temperature
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, T
Jmax
; total thermal re-
sistance, 
θ
JA
, and ambient temperature T
A
. The maximum allowable power dissipation at any ambient 
temperature is T
Jmax
-T
A
/
θ
JA
. If this dissipation is exceeded, the die temperature will rise above 150°C and 
IC will go into thermal shutdown. For the G901 in SOT89 package, 
θ
JA
 is 250°C/W(See recommend 
minimum footprint). The safe operation in SOT 89, 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 pos-
sible. 
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. 
A 
°C 
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.