Ver: 1.6
Dec 31, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
1
G950
Global Mixed-mode Technology Inc.
2.5V 1A Regulator
Features
Output current in excess of 1A
Output voltage accuracy +3%/-1%
Quiescent current, typically 600A
Internal short circuit current limit
Internal over temperature protection
Applications
PC motherboard
ADSL/Cable Modem
Set-Top-Box
LAN switch/Hub
Router
General Description
The G950 positive 2.5V voltage regulator features
the ability to source 1A of output current. The typical
quiescent current is 0.6mA.
Familiar regulator features such as over tempera-
ture and over current protection circuits are pro-
vided to prevent it from being damaged by ab-
normal operating conditions.
Ordering Information
PIN OPTION
ORDER NUMBER
PACKAGE TYPE
1 2 3
G950T45U TO
252
V
IN
GND V
OUT
G950T55U TO
263
V
IN
GND V
OUT
G950T63U SOT
223
GND
V
OUT
V
IN
G950T64U SOT
223
GND
V
IN
V
OUT
G950T65U SOT
223
V
IN
GND V
OUT
G950T66U SOT
223
V
IN
V
OUT
GND
* For other package types and pin options, 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
PACKING
T3 : TO 220
1
2
3
U & D : Tape & Reel Direction
T4 : TO 252
1 : V
OUT
GND V
IN
T : Tube
T5 : TO 263
2 : V
OUT
V
IN
GND
T6 : SOT 223
3 : GND
V
OUT
V
IN
4 : GND
V
IN
V
OUT
5 : V
IN
GND
V
OUT
6 : V
IN
V
OUT
GND
Typical Application Package Type
[Note 4] : Type of C
OUT
G950
C1
1F
IQ
V
IN
V
OUT
I
O
C
OUT
10F
Top View
1
3
TO 220
2
Top View
1
2
3
SOT 223
Top View
1
2
3
TO252
263
Top View
1
3
TO 220
2
Top View
1
3
TO 220
2
Top View
1
2
3
SOT 223
Top View
Top View
1
2
3
SOT 223
Top View
1
2
3
TO252
263
Top View
1
2
3
TO252
263
Ver: 1.6
Dec 31, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
2
G950
Global Mixed-mode Technology Inc.
Absolute Maximum Ratings
(Note 1)
Input Voltage....................................................7V
Power Dissipation Internally Limited .... (Note 2)
Maximum Junction Temperature.................... .....150C
Storage Temperature Range.........-65C
T
J
+150C
Lead Temperature, Time for Wave Soldering
TO 220 Package....................................260C, 10s
TO 252, TO 263, SOT 223 Package.............260C, 4s
Continuous Power Dissipation (T
A
= + 25C)
SOT 223
(1)
.....................................................0.8W
TO 252
(1)
.......................................................1.0W
TO 263
(1)
.......................................................1.6W
Note
(1)
: See Recommended Minimum Footprint.
Operating Conditions
(Note 1)
Input Voltage...........................................3.3V~6V
Temperature Range........................0C
T
J
125C
Electrical Characteristics
V
IN
=5V, I
O
= 1A, C
IN
= 1F, C
OUT
=10 F, All specifications apply for T
A
= T
J
= 25C. [Note 3]
PARAMETER CONDITIONS MIN
TYP
MAX
UNITS
V
IN
= 5V, 10mA < I
O
< 1A
Output Voltage
V
IN
= 3.3V, 10mA < I
O
< 500mA
2.475 2.50 2.575 V
Line Regulation
3.3V < V
IN
< 6V, I
O
= 10mA
3
30
mV
V
IN
= 5V, 10mA < I
O
< 1A
35
50
mV
Load Regulation
V
IN
= 3.3V, 10mA < I
O
<
500mA
25 mV
Output Impedance
200mA DC and 100mA AC, fo = 120Hz
80
m
Quiescent Current
V
IN
=
5V
0.6 mA
Ripple Rejection
f
i
= 120Hz,V
ripple
=2V
P-P
,
Io = 100mA
46
dB
I
O
= 1A
1.15
V
I
O
= 500mA
420
mV
Dropout Voltage
I
O
= 100mA
200
mV
Short Circuit Current
1.6
A
Over Temperature
150
C
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,
JA
, and ambient temperature T
A
. The maximum allowable power dissipation at any ambient tem-
perature is T
jmax
-T
A
/
JA
. If this dissipation is exceeded, the die temperature will rise above 150C and IC
will go into thermal shutdown. For the G950 in SOT 223 package,
JA
is 156C/W; in TO 263 package,
JA
is 75C/W, and in the TO 252 package,
JA
is 125C/W (See recommend minimum footprint). The safe
operation in SOT 223,TO 252 & TO 263 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
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 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.
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.
Ver: 1.6
Dec 31, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
3
G950
Global Mixed-mode Technology Inc.
Typical Performance Characteristics
(V
IN
= +5V, C
IN
=1F, C
OUT
=10F, T
A
=25C, unless otherwise noted.)
Ground Current vs. Load Current
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
1.60
1.80
2.00
0
100
200
300
400
500
600
700
800
900
1000
Load Current (mA)
Ground Current (mA)
Output Voltage vs. Load Current
2.480
2.500
2.520
2.540
2.560
2.580
2.600
0
100
200
300
400
500
600
700
800
900
1000
Load Current (mA)
Ootput Voltage (V)
Dropout Voltage vs. Load Current
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
0
100
200
300
400
500
600
700
800
900
1000
Load Current (mA)
Dropout Voltage (mV)
Line Transient
Load Transient
Ch1: Vin (offset=5.0V)
Ch2: Vout (offset=2.50V)
CIN = 1uF
Iout=100mA
Ch1: Iout (1A/div)
Ch2: Vout (offset=2.50V)
Ver: 1.6
Dec 31, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
4
G950
Global Mixed-mode Technology Inc.
Typical Performance Characteristics
(V
IN
= +3.3V, C
IN
=1F, C
OUT
=10F, T
A
=25C, unless otherwise noted.)
Output Voltage vs. Load Current
2.500
2.505
2.510
2.515
2.520
2.525
2.530
2.535
2.540
2.545
2.550
0
50 100 150 200 250 300 350 400 450 500 550 600
Load Current (mA)
Ootput Voltage (V)
Dropout Voltage vs. Load Current
0
50
100
150
200
250
300
350
400
450
500
0
50 100 150 200 250 300 350 400 450 500 550 600
Load Current (mA)
Dropout Voltage (mV)
Ground Current vs. Load Current
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
1.60
1.80
2.00
0
100
200
300
400
500
600
Load Current (mA)
Ground Current (mA)
Line Transient
Load Transient
Ch1: Vin (offset=3.3V)
Ch2: Vout (offset=2.50V)
CIN = 1uF
Iout=100mA
Ch1: Iout (400mA/div)
Ch2: Vout is AC coupled
Ver: 1.6
Dec 31, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
5
G950
Global Mixed-mode Technology Inc.
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
25
35
45
55
65
75
85
95 105 115 125
Amibent Temperature T
A
(C)
Power Dissipation (W)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
25
35
45
55
65
75
85
95 105 115 125
Amibent Temperature T
A
(C)
Power Dissipation (W)
Still Air
1oz Copper on SOT-223 Package
Mounted on recommend mimimum
footprint (R
JA
=156C/W)
Still Air
1oz Copper on TO-252 Package
Mounted on recommend mimimum
footprint (R
JA
=125C/W)
Note: V
IN
(max)
<= 6.5V
0
200
400
600
800
1000
1200
1.2
1.6
2.0
2.4
2.8
3.2
3.6
4.0
Input-Output Voltage Differential V
IN
-V
OUT
(V)
Output Current (mA)
TA=25
TA=55
TA=85
T
A
=25C,Still Air
1oz Copper on SOT-223 Package
Mounted on recommended mimimum
footprint (R
JA
=156C/W)
Maximum Recommended Output Current
0
200
400
600
800
1000
1200
1.2
1.6
2.0
2.4
2.8
3.2
3.6
4.0
Input-Output Voltaage Differential V
IN
-V
OUT
(V)
Output Current (mA)
TA=25
TA=55
TA=85
Maximum Recommended Output Current
Power Dissipation of TO-252
Safe Operating Area of SOT-223
Safe Operating Area of TO-252
Note: V
IN
(max)
<= 6.5V
Power Dissipation of SOT-223
T
A
=25C,Still Air
1oz Copper on TO-252 Package
Mounted on recommended mimimum
footprint (R
JA
=125C/W)
Ver: 1.6
Dec 31, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
6
G950
Global Mixed-mode Technology Inc.
0
200
400
600
800
1000
1200
1.2
1.6
2.0
2.4
2.8
3.2
3.6
4.0
Input-Output Voltaage Differential V
IN
-V
OUT
(V)
Output Current (mA)
TA=25
TA=55
TA=85
T
A
=25C,Still Air
Maximum Recommended Output Current
1oz Copper on TO-263 Package
Mounted on recommended mimimum
footprint (R
JA
=75C/W)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
25
35
45
55
65
75
85
95 105 115 125
Amibent Temperature T
A
(C)
Power Dissipation (W)
Still Air
1oz Copper on TO-263 Package
Mounted on recommend mimimum
footprint (R
JA
=75C/W)
Safe Operating Area of TO-263
Power Dissipation of TO-263
Note: V
IN
(max)
<= 6.5V
Recommend Minimum Footprint
Ver: 1.6
Dec 31, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
7
G950
Global Mixed-mode Technology Inc.
Package Information
TO-220 (T3) Package
MILLIMETERS INCHES
SYMBOLS
MIN MAX MIN MAX
A 4.318 4.826 0.170 0.190
A1 2.46 2.72
0.097
0.107
b 0.69
0.94
0.027
0.037
b1 1.143 1.397 0.045 0.055
C 0.304 0.460 0.012 0.018
D 3.429 3.683 0.135 0.145
D1 8.53 9.04
0.336
0.356
d 2.62
2.87
0.103
0.113
E 9.906 10.40 0.390 0.410
E1 2.84 5.13
0.112
0.202
e 2.29
2.79
0.090
0.110
e1 4.83 5.33
0.190
0.210
F 1.143 1.397 0.045 0.055
I 3.454 3.962 0.136 0.156
L 13.589
14.351
0.535
0.565
E
R
E1
E1
D
d
I
L
e
b
b1
e1
A
F
D1
C
A1
Ver: 1.6
Dec 31, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
8
G950
Global Mixed-mode Technology Inc.
TO-252 (T4) Package
Notes:
1. Dimensioning and tolerancing per ansi y14.5m, 1982.
2. Controlling dimension : inch
INCHES MILLIMETERS
DIM
MIN MAX MIN MAX
A 0.235
0.250
5.97 6.35
B 0.250
0.265
6.35 6.73
C 0.086
0.094
2.19 2.38
D 0.027
0.035
0.69 0.88
E 0.033
0.040
0.84 1.01
F 0.037
0.047
0.94 1.19
G 0.180BSC
4.58BSC
H 0.034
0.040
0.87 1.01
J 0.018
0.023
0.46 0.58
K 0.102
0.114
2.60 2.89
L 0.090BSC
2.29BSC
R 0.175
0.215
4.45 6.46
S 0.020
0.050
0.51 1.27
U 0.020 --- 0.51 ---
V 0.030
0.050
0.77 1.27
Z 0.138 --- 3.51 ---
R
B
V
A
K
S
1
2
3
F
L
D
G
4
2 PL
0.13 (0.005) M T
Z
E
C
T
SEATING
PLANE
U
J
H
Ver: 1.6
Dec 31, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
9
G950
Global Mixed-mode Technology Inc.
TO-263 (T5) Package
MILLIMETERS INCHES
SYMBOLS
MIN MAX MIN MAX
A 4.30
4.70
0.169
0.185
A1 1.22 1.32
0.048
0.055
A2 2.45 2.69
0.104
0.106
b 0.69
0.94
0.027
0.037
b1 1.22 1.40
0.048
0.055
C 0.36
0.56
0.014
0.022
D 8.64
9.652
0.340
0.380
E 9.70
10.54
0.382
0.415
e 2.29
2.79
0.090
0.110
e1 4.83 5.33
0.190
0.210
H 14.60 15.78 0.575 0.625
L 4.70
5.84
0.185
0.230
L1 1.20
1.778
0.047
0.070
L2 2.24 2.84
0.088
0.111
L3 1.40MAX
0.055MAX
e
L3
D
H
e1
b1
b
E
A
A1
C
A2
L2
L
L1
e
L3
D
H
e1
b1
b
E
A
A1
C
A2
L2
L
L1
Ver: 1.6
Dec 31, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
10
G950
Global Mixed-mode Technology Inc.
SOT-223 (T6) Package
MILLIMETERS INCHES
SYMBOLS
MIN MAX MIN MAX
A 1.55
1.80
0.061
0.071
A1 0.02 0.12
0.0008
0.0047
B 0.60
0.80
0.024
0.031
B1 2.90 3.10
0.114
0.122
C 0.24
0.32
0.009
0.013
D 6.30
6.70
0.248
0.264
E 3.30
3.70
0.130
0.146
e
2.30 BSC
0.090 BSC
e1
4.60 BSC
0.181 BSC
H 6.70
7.30
0.264
0.287
L
0.90 MIN
0.036 MIN
L2
0.06 BSC
0.0024 BSC
0 10 0 10
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.
A
B
13
(4X)
A1
e1
e
E
B1
D
H
C
13
(4X)
L2
L
F e e d D ire c tio n
S O T 2 2 3 P a c k a g e O rie n ta tio n
F e e d D ire c tio n
T O 2 5 2
2 6 3 P a c k a g e O rie n ta tio n
F e e d D ire c tio n
S O T 2 2 3 P a c k a g e O rie n ta tio n
F e e d D ire c tio n
T O 2 5 2
2 6 3 P a c k a g e O rie n ta tio n
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