GMT G940T74U 3.7v 400ma low dropout regulator Datasheet

G940/G941
Global Mixed-mode Technology Inc.
3.7V 400mA Low Dropout Regulator
Features
General Description
„Dropout voltage typically 0.8V @ IO = 400mA
„Output current in excess of 400mA
„Output voltage accuracy +3%/-2%
„Quiescent current, typically 600µA
„Internal short circuit current limit
„Internal over temperature protection
The G940/G941 positive 3.7V voltage regulator features the ability to source 400mA of output current
with a dropout voltage of typically 0.8V over the entire operating temperature range. A low quiescent
current is provided over the entire output current
range. The typical quiescent current is 0.6mA. Furthermore, the quiescent current is smaller when the
regulator is in the dropout mode (VIN < 3.7V).
Familiar regulator features such as over temperature
and over current protection circuits are provided to
prevent it from being damaged by abnormal operating
conditions.
Ordering Information
ORDER NUMBER
PACKAGE TYPE
G940T21U
G941T24U
G940T73U
SOT 89
SOT 89
SOT 23
1
PIN OPTION
2
3
VOUT
GND
GND
GND
VIN
VOUT
VIN
VOUT
VIN
*For other package types, pin options and package, please contact us at sales @gmt.com.tw
Order Number Identification
GXXX
XX
X
X
Packing Type
Pin Option
Package Type
Part Number
PACKAGE TYPE
PIN OPTION
T2 : SOT 89
T6 : SOT 223
T7 : SOT 23
T8 : µTO92
1
1 : VOUT
2 : VOUT
3 : GND
4 : GND
5 : VIN
6 : VIN
Typical Application
2
GND
VIN
VOUT
VIN
GND
VOUT
PACKING
U & D : Tape & Reel D Direction
T : Tube
B : Bag
3
VIN
GND
VIN
VOUT
VOUT
GND
Package Type
[Note 4] : Type of COUT
3
IO
G940
VIN
C1
0.47µF
IQ
VOUT
COUT
10µF
Top
TopView
View
1
2
3
SOT 89、
、223
Ver: 5.5
May 13, 2002
Top
TopView
View
1
2
3
µTO 92
Top View
1
2
SOT 23
TEL: 886-3-5788833
http://www.gmt.com.tw
1
G940/G941
Global Mixed-mode Technology Inc.
(Note 1)
Absolute Maximum Ratings
Input Voltage……………………………..……..…..…10V
Power Dissipation Internally Limited
..(Note 2)
Maximum Junction Temperature………….….…...150°C
Storage Temperature Range…..…..…..-65°C ≤ TJ ≤+150°C
Lead Temperature, Time for Wave Soldering
SOT 89, SOT23 Package….….…..……..…....260°C, 4s
Continuous Power Dissipation (TA = + 25°C)
SOT 23(1)…….…………………….….……….……...0.3W
SOT 89(1)……………………….………..………..…0.42W
(Note 1)
Operating Conditions
Input Voltage………………………….…………….4V~7V
Temperature Range………………….…0°C ≤ TJ ≤125°C
Note (1): See Recommended Minimum Footprint.
Electrical Characteristics
VIN =5V, IO = 400mA, CIN = 1 µF, COUT =10 µF, All specifications apply for TA = TJ = 25°C. [Note 3]
PARAMETER
MIN
TYP
MAX
UNITS
IO = 10mA
VIN = 4V to 7V, IO = 50mA
IO = 10mA to 400mA
100mA DC and 100mA AC, fo = 120Hz
VIN=5V
fi = 120 Hz, 1VP-P, Io = 100mA
-2
-
0.08
100
0.6
42
+3
0.9
2.2
-
%
%/V
%
mΩ
mA
dB
IO = 400mA
-
0.8
0.9
V
IO = 100mA
-
130
150
mV
Short Circuit Current
-
0.76
-
A
Over Temperature
-
125
-
°C
Output Voltage Accuracy
Line Regulation
Load Regulation
Output Impedance
Quiescent Current
Ripple Rejection
Dropout Voltage
CONDITIONS
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: 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 130°C and IC
will go into thermal shutdown. For the G940/G941 in SOT 23 package, θJA is 350°C/W and in the SOT 89
package is 250°C/W (See Recommend Minimum Footprint). The safe operation in SOT 23 & SOT 89
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
Load Regulation
The change in output voltage for a change in load
current at constant chip temperature. The measurement is made under conditions of low dissipation or by
using pulse techniques such that average chip temperature is not significantly affected.
Dropout Voltage
The input/output Voltage differential at which the
regulator 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 current and minimum input supply requirements.
Maximum Power Dissipation
The maximum total device dissipation for which the
regulator will operate within specifications.
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 affected.
Quiescent Bias Current
Current which is used to operate the regulator chip
and is not delivered to the load.
Ver: 5.5
May 13, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
2
G940/G941
Global Mixed-mode Technology Inc.
Typical Performance Characteristics
(VIN=5V, CIN=1µF, COUT=10µF, TA=25°C, unless otherwise noted.)
Line Transient
Load Transient
Ch1: Vout (offset=3.70V)
Ch2: Vin (offset=5.0V)
Iout=100mA
Ch1: Iout (400mA/div)
Ch2: Vout (offset=3.70V)
Dropout Voltage vs. Load Current
Output Voltage Accuracy vs. Load Current
2.000%
900
Dropout Voltage (mV)
Output Voltage Accuracy
800
1.500%
1.000%
0.500%
0.000%
700
600
500
400
300
200
-0.500%
100
-1.000%
0
0
50
0
100 150 200 250 300 350 400 450 500 550 600
50
100
150
200
250
300
350
400
450
Load Current (mA)
Load Current (mA)
Ground Current vs. Load Current
2.0
1.8
Ground Current (mA)
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
50
100
150
200
250
Load Current (mA)
300
350
400
Ver: 5.5
May 13, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
3
G940/G941
Global Mixed-mode Technology Inc.
Maximum Power Dissipation of SOT 23
Safe Operating Area
[Power Dissipation Limit]
0.5
500
450
Maximum Recommended Output Current
TA=25°C,Still Air
0.4
Power Dissipation (W)
Output Current (mA)
400
350
300
TA=25℃
TA=55℃
250
TA=85℃
200
150
100
50
0.3
0.2
0.1
Still Air
1oz Copper on SOT 23 Package
Mounted on recommend mimimum footprint (RθJA=350°C/W)
1oz Copper on SOT 23 Package
Mounted on recommended mimimum footprint (RθJA=350°C/W)
0
0.0
0.4
0.8
1.2
1.6
2.0
2.4
0.0
2.8
25
35
Input-Output Voltage Differential V IN-V OUT (V)
45
55
65
75
85
95
105
115
125
Amibent Temperature TA (°C)
Note: V IN(max) <= 6.5V
Safe Operating Area
[Power Dissipation Limit]
Maximum Power Dissipation of SOT 89
0.6
500
450
Maximum Recommended Output Current
TA=25°C,Still Air
0.5
Power Dissipation (W)
Output Current (mA)
400
350
300
TA=25℃
TA=55℃
250
TA=85℃
200
150
100
0.4
0.3
0.2
Still Air
1oz Copper on SOT 89 Package
Mounted on recommend mimimum footprint (RθJA=250°C/W)
0.1
1oz Copper on SOT 89 Package
Mounted on recommended mimimum footprint (RθJA=250°C/W)
50
0
0
0.0
0.4
0.8
1.2
1.6
2.0
2.4
25
2.8
35
45
55
65
75
85
95
105
115
125
Amibent Temperature TA (°C)
Input-Output Voltage Differential V IN-V OUT (V)
Note: V IN(max) <= 6.5V
Recommend Minimum Footprint
Ver: 5.5
May 13, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
4
G940/G941
Global Mixed-mode Technology Inc.
Package Information
D
D1
POLISH
E
HE
A1
e
C
MATTE FINISH
A
b
b1
b
POLISH
SOT-89 (T2) Package
SYMBOLS
A
A1
b
b1
C
D
D1
HE
E
e
DIMENSIONS IN MILLIMETERS
MIN
NOM
MAX
MIN
1.40
0.80
0.36
0.41
038
4.40
1.40
----2.40
2.90
0.055
0.031
0.014
0.016
0.014
0.173
0.055
----0.094
0.114
1.50
1.04
0.42
0.47
0.40
4.50
1.60
----2.50
3.00
1.60
----0.48
0.53
0.43
4.60
1.75
4.25
2.60
3.10
Ver: 5.5
May 13, 2002
DIMENSIONS IN INCHES
NOM
MAX
0.059
0.041
0.016
0.018
0.015
0.177
0.062
----0.098
0.118
0.063
----0.048
0.020
0.017
0.181
0.069
0.167
0.102
0.122
TEL: 886-3-5788833
http://www.gmt.com.tw
5
G940/G941
Global Mixed-mode Technology Inc.
A
D
α
B1
C
13°(4X)
H
E
L
L2
e
e1
13°(4X)
A1
B
SOT-223 (T6) Package
SYMBOLS
A
A1
B
B1
C
D
E
e
e1
H
MILLIMETERS
MAX
MIN
MAX
1.55
0.02
0.60
2.90
0.24
6.30
3.30
1.80
0.12
0.80
3.10
0.32
6.70
3.70
0.061
0.0008
0.024
0.114
0.009
0.248
0.130
0.071
0.0047
0.031
0.122
0.013
0.264
0.146
2.30 BSC
0.090 BSC
4.60 BSC
6.70
L
L2
α
INCHES
MIN
0.181 BSC
7.30
0.264
0.90 MIN
0.06 BSC
0º
0.287
0.036 MIN
0.0024 BSC
10º
Ver: 5.5
May 13, 2002
0º
10º
TEL: 886-3-5788833
http://www.gmt.com.tw
6
Global Mixed-mode Technology Inc.
G940/G941
C
D
L
E
H
e
θ1
A
A2
A1
b
SOT-23 (T7) Package
Note:
1.Package body sizes exclude mold flash protrusions or gate burrs
2.Tolerance ±0.1000 mm (4mil) unless otherwise specified
3.Coplanarity: 0.1000mm
4.Dimension L is measured in gage plane
SYMBOLS
A
A1
A2
b
C
D
E
e
H
L
θ1
MIN
DIMENSIONS IN MILLIMETERS
NOM
MAX
1.00
0.00
0.70
0.35
0.10
2.70
1.40
----2.60
0.37
1º
1.10
----0.80
0.40
0.15
2.90
1.60
1.90(TYP)
2.80
-----5º
1.30
0.10
0.90
0.50
0.25
3.10
1.80
----3.00
----9º
Ver: 5.5
May 13, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
7
G940/G941
Global Mixed-mode Technology Inc.
L
A
e
E
G
H
R
b
D
2.
00
A1
θ1(2 X)
C
θ2 (2 X)
µTO-92 (T8) Package
SYMBOLS
A
A1
b
C
D
E
e
F
G
H
L
θ1
θ2
DIMENSIONS IN INCHES
DIMENSIONS IN MILLIMETERS
MIN
NOM
MAX
MIN
NOM
MAX
2.40
0.70
0.35
----2.80
3.80
----1.91
3.35
0.00
13.80
---------
0.094
0.028
0.014
----0.110
0.149
----0.075
0.132
0.000
0.543
---------
0.098
0.032
0.018
0.016
0.118
0.157
0.050
0.083
0.140
----0.551
2°
5°
0.102
0.036
0.022
----0.126
0.165
----0.091
0.148
0.006
0.559
---------
2.50
0.80
0.45
0.40
3.00
4.00
1.27
2.11
3.55
----14.00
2°
5°
2.60
0.90
0.55
----3.20
4.20
----2.31
3.75
0.15
14.20
---------
Package Orientation
Feed Direction
、223 Package Orientation
SOT 89、
Feed Direction
SOT 23 Package Orientation
GMT Inc. does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and GMT Inc. reserves the right at any time without notice to change said circuitry and specifications.
Ver: 5.5
May 13, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
8
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