Global Mixed-mode Technology Inc.
G9131
300mA Low-Dropout Linear Regulators
Features
55µA Quiescent Current
Guaranteed 300mA Output Current
Dropout Voltage is 70mV @ 50mA Load
Over-Temperature Protection and Short-Circuit
Protection
Low Output Noise is 220µV
RMS
Stable with low cost ceramic capacitors
General Description
The G9131 is a low supply current, low dropout linear
regulator that comes in a space saving SOT23 pack-
age. The supply current at no-load is 55µA. An over
temperature protection circuit is built-in in the G9131
to prevent thermal overload. These power saving fea-
tures make the G9131 ideal for use in the bat-
tery-powered applications such as notebook com-
puters, cellular phones, and PDA’s.
Applications
Cordless Phones
PDAs
Hand-Held Devices
Bar Code Scanners
Electronic Scales
Ordering Information
ORDER NUMBER
G9131-33T73U
G9131-33T24U
MARKING
31xx
31xx
VOLTAGE
3.3V
3.3V
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
PACKAGE TYPE
SOT 23
SOT 89
* For other package types, pin options and package, please contact us at sales@gmt.com.tw
Order Number Identification
GXXXX
XX
XX
X
X
Packing Type
Pin Option
Package Type
Voltage
Part Number
PACKAGE TYPE
T2 : SOT 89
T7 : SOT 23
1
1 : V
OUT
2 : V
OUT
3 : GND
4 : GND
5 : V
IN
6 : V
IN
PIN OPTION
2
GND
V
IN
V
OUT
V
IN
GND
V
OUT
3
V
IN
GND
V
IN
V
OUT
V
OUT
GND
PACKING
U & D : Tape & Reel Direction
T : Tube
B : Bag
Pin Configuration
Package Type
V
IN
C
IN
1µF
＋
IN
G9131
OUT
GND
OUTPUT
VOLTAGE
＋
C
OUT
1µF
Top View
3
Top View
1
2
3
SOT 89
1
2
SOT 23
Ver: 1.0
Oct 08, 2003
TEL: 886-3-5788833
http://www.gmt.com.tw
1
Global Mixed-mode Technology Inc.
Absolute Maximum Ratings
V
IN
to GND……………………………………-0.3V to +7V
Output Short-Circuit Duration………………….….Infinite
OUT to GND…………………………-0.3V to (V
IN
+ 0.3V)
Continuous Power Dissipation (T
A
= +25°C)
SOT 23….…………..………………………...…..350 mW
SOT 89….……………………….………….…….500 mW
G9131
Operating Temperature Range...….…...-40°C to +85°C
Junction Temperature……………………….……+150°C
Thermal Resistance
θ
JA
SOT 23
(1)
.…………….…………….…..……..350°C/Watt
SOT 89
(1)
.…………….…………….…..……..250°C/Watt
Storage Temperature Range………….-65°C to +160°C
Lead Temperature (soldering, 10sec)..…………+260°C
Note (1): See Recommended Minimum Footprint [Figure 2 & Figure 3]
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress rat-
ings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of
the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Electrical Characteristics
(V
IN
=V
O
+1V, T
A
=T
J
=+25°C, unless otherwise noted.) (Note 1)
PARAMETER
Input Voltage
Output Voltage Accuracy
Maximum Output Current
Short Circuit Current
Ground Pin Current
SYMBOL
V
IN
V
OUT
I
SC
I
Q
I
OUT
=5mA
CONDITION
MIN
Note 2
-2
300
TYP MAX UNIT
5.5
2
200
55
145
265
2
70
230
400
0.1
220
245
150
15
V
%
mA
mA
µA
Dropout Voltage (Note 3)
Line Regulation
Load Regulation
Output Voltage Noise (10Hz to 100kHz)
THERMAL PROTECTION
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
V
DROP
∆V
LNR
∆V
LDR
e
n
T
SHDN
∆T
SHDN
I
LOAD
= 0mA
I
LOAD
= 50mA
I
LOAD
= 300mA
I
OUT
= 1mA
I
OUT
= 50mA
I
OUT
=150mA
I
OUT
=300mA
V
IN
=V
O
+0.1V to 5.5V, I
OUT
= 10mA
I
OUT
= 0mA to 300mA
V
IN
=4.3V, C
OUT
=1µF
I
OUT
= 150mA
I
OUT
= 300mA
120
mV
500
0.28
1
%/V
%
µV
RMS
°C
°C
Note 1: Limits is 100% production tested at T
A
= +25°C. Low duty pulse techniques are used during test to
maintain junction temperature as close to ambient as possible.
Note 2: V
IN(min)
= V
OUT
+ V
DROPOUT
.
Note 3: The dropout voltage is defined as (V
IN
-V
OUT
) when V
OUT
is 100mV below the value of V
OUT
for V
IN
= V
OUT
+2V,
Ver: 1.0
Oct 08, 2003
TEL: 886-3-5788833
http://www.gmt.com.tw
2
Global Mixed-mode Technology Inc.
Typical Performance Characteristics
(V
IN
= V
O
+ 1V, C
IN
=1uF, C
OUT
=1µF, T
A
= 25°C, unless otherwise noted.)
G9131
Ground Current vs. Load Current
Output Voltage vs. Load Current
3.3400
3.3300
400
350
Output Voltage (V)
3.3200
3.3100
3.3000
3.2900
3.2800
3.2700
3.2600
0
50
100
150
200
250
300
Ground Current (µA)
300
250
200
150
100
50
0
0
50
100
150
200
250
300
Load Current (mA)
Load Current (mA)
Output Voltage vs. Input Voltage
4.0
3.5
400
350
300
Supply Current (uA)
250
200
150
100
50
0
1
2
3
4
5
6
Supply Current vs. Input Voltage
Output Voltage (V)
3.0
2.5
2.0
1.5
1.0
0.5
0.0
I
LOAD
=300mA
I
LOAD
=50mA
I
LOAD
=0mA
0
0
1
2
3
4
5
6
Input Voltage (V)
Input Voltage (V)
Dropout Voltage vs. Load Current
600
T
A
=25°C
500
400
350
Dropout Voltage vs. Temperature
Dropout Voltage (mV)
Dropout Voltage (mV)
300
250
200
150
400
300
200
100
0
0
50
100
150
200
250
300
I
LOAD
=150mA
I
LOAD
=50mA
100
50
0
-40 -30 -20 -10 0
10 20 30 40 50 60 70 80 90 100 110 120 130
I
LOAD
=0mA
Loading (mA)
Junction Temperature TJ (°C)
Ver: 1.0
Oct 08, 2003
TEL: 886-3-5788833
http://www.gmt.com.tw
3
Global Mixed-mode Technology Inc.
Typical Performance Characteristics
(Continue)
Line Transient
Load Transient
G9131
Load Transient
Load Transient
Load Transient
Output Noise 10HZ to 100KHZ
Ver: 1.0
Oct 08, 2003
TEL: 886-3-5788833
http://www.gmt.com.tw
4
Global Mixed-mode Technology Inc.
Typical Performance Characteristics
(Continue)
Turn on Response Time
G9131
Turn off Response Time
Output Voltage vs. Temperature
3.340
100
Ground Current vs. Temperature
90
V
IN
=5.5V
V
IN
=3.6V
Ground Current (µA)
Output Voltage (V)
3.330
3.320
3.310
3.300
3.290
3.280
I
LOAD
=1mA
80
70
60
50
40
30
20
10
0
-40 -30 -20 -10 0
10 20 30 40 50 60 70 80 90 100 110 120 130
V
IN
=3.4V
-40 -30 -20 -10
0
10 20 30
40 50 60 70
80 90 100 110 120
Junction Temperature
Junction Temperature T
J
(°C)
Ver: 1.0
Oct 08, 2003
TEL: 886-3-5788833
http://www.gmt.com.tw
5
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