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参数资料
型号： GU1085
厂商： GTM CORPORATION
英文描述： 3A Low Dropout Positive Adjustable or Fixed-Mode Regulator
中文描述： 第3A低压差正可调或固定模式稳压器
文件页数： 2/4页
文件大小： 268K
代理商： GU1085
GU1085
Page: 2/4
ISSUED DATE :2005/06/01
REVISED DATE :2006/06/01C
Pin Descriptions
Name
I/O
Pin#
Function
Adj (GND)
1
Adjustable (Ground only for fixed mode)
Vout
O
2
The output of the regulator. A minimum of 10uF capacitor must be connected from this pin to
ground to insure stability.
Vin
I
3
The input pin of regulator. Typically a large storage capacitor is connected from this pin to ground
to insure that the input voltage does not sag below the minimum dropout voltage during the load
transient response. This pin must always be 1.4V higher than Vout in order for the device to
regulate properly.
Absolute Maximum Ratings
Symbol
Parameter
Ratings
Unit
Vin
DC Supply Voltage
-0.3 to 12
V
PD
Power Dissipation
Internally Limited
TST
Storage Temperature
-65 ~ + 150
:
TOP
Operating Junction Temperature Range
0 ~ + 150
:
Electrical Characteristics
Parameter
Conditions
MIN
TYP
MAX
UNIT
Reference Voltage
GU1085-ADJ
Io=10mA, TJ =25 ,
: (Vin-Vout )=1.5V
1.225
1.250
1.275
V
GU1085-1.5
Io=10mA, TJ =25 ,
: 3.0V Vin 12V
1.470
1.500
1.530
V
GU1085-1.8
Io=10mA, TJ =25 ,
: 3.3V Vin 12V
1.764
1.800
1.836
V
GU1085-2.5
Io=10mA, TJ =25 ,
: 4.0V Vin 12V
2.450
2.500
2.550
V
GU1085-3.3
Io=10mA, TJ =25 ,
: 4.8V Vin 12V
3.235
3.300
3.365
V
Output Voltage
GU1085-5.0
Io=10mA, TJ =25 ,
: 6.5V Vin 12V
4.900
5.000
5.100
V
Line Regulator
GU1085-XXX
Io=10mA, Vout+1.5<Vin<12
-
0.2
%
GU1085-ADJ
Vin=3.3V, 0mA<Io<3A, TJ=25 : (Note 1,2)
-
1
%
GU1085-1.5
Vin=3.0V, 0mA<Io<3A, TJ=25 : (Note 1,2)
-
12
15
mV
GU1085-1.8
Vin=3.3V, 0mA<Io<3A, TJ =25 : (Note 1,2)
-
15
18
mV
GU1085-2.5
Vin=4.0V, 0mA<Io<3A, TJ=25 : (Note 1,2)
-
20
25
mV
GU1085-3.3
Vin=5.0V, 0mA<Io<3A, TJ=25 : (Note 1,2)
-
26
33
mV
Load Regulation
GU1085-5.0
Vin=8.0V, 0mA<Io<3A, TJ=25 : (Note 1,2)
-
40
50
mV
Dropout Voltage
(Vin-Vout)
GU1085-XXX
Io=3A( Vout=1% Vout)
-
1.3
1.4
V
Current Limit
GU1085-XXX
Vin-Vout=5V
3.1
-
A
Minimum Load Current Adjustable model
Vin=5V
-
5
10
mA
Adjust Pin Current
Adjustable model
Vin=12V, Io=10mA
-
55
100
uA
Quiescent Current
fixed model
Vin=12V, Io=0mA
-
12
mA
Thermal Regulation
TA=25 : , 30ms pulse
-
0.008
0.04
%/W
F=120Hz, COUT=25uF, Tantalum, Io=3A
Ripple Rejection
GU1085-XXX
Vin=Vout+3V
-
60
70
dB
Temperature Stability
Io=10mA
-
0.5
-
%
Thermal Resistance
Junction–to-Ambient
(No heat sink ;No air flow)
-
91
-
/
: W
Thermal Resistance
Junction-to-Case
Control Circuitry/Power Transistor
-
10
-
/
: W
Note 1: See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured
at a constant junction Temperature by low duty cycle pulse testing. Load regulation is measured at the output lead =1/18” from the
package.
Note 2: Line and load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the
difference in input and output and the output current. Guaranteed maximum power dissipation will not be available over the full
input/output range.
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