GMT G957T65U 1.5v 1a regulator Datasheet

G957
Global Mixed-mode Technology Inc.
1.5V 1A Regulator
Features
General Description
„
„
The G957 positive 1.5V voltage regulator features
the ability to source 1A of output current. The typical
quiescent current is 0.54mA.
Output current in excess of 1A
Output voltage accuracy ±2.0%
„ Quiescent current, typically 0.54mA
„ Internal short circuit current limit
„ Internal over temperature protection
Familiar regulator features such as over temperature and over current protection circuits are
provided to prevent it from being damaged by
abnormal operating conditions.
Applications
„
„
„
„
„
PC motherboard
ADSL/Cable Modem
Set-Top-Box
LAN switch/Hub
Broad band access
Ordering Information
ORDER ORDER NUMBER
MARKING
NUMBER
(Pb free)
G957T35T
G957T45U
G957T65U
G957T35Tf
G957T45Uf
G957T65Uf
957T35
957T45
957T65
TEMP.
PACKAGE
RANGE
-40°C~85°C
-40°C~85°C
-40°C~85°C
TO-220
TO-252
SOT-223
1
PIN OPTION
2
3
VIN
VIN
VIN
GND
GND
GND
VOUT
VOUT
VOUT
* For other package types and pin options, please contact us at [email protected]
Order Number Identification
GXXX
XX
X
X
Packing Type
Pin Option
Package Type
Part Number
PACKAGE TYPE
PIN OPTION
1
1: VOUT
2: VOUT
3: GND
4: GND
5: VIN
6: VIN
T3: TO-220
T4: TO-252
T6: SOT-223
2
GND
VIN
VOUT
VIN
GND
VOUT
Package Type
PACKING
3
VIN
GND
VIN
VOUT
VOUT
GND
U: Tape & Reel
T: Tube
Typical Application
[Note 4]: Type of COUT
IO
Top View
Top View
G957
VIN
C1
1µF
1
2 3
TO-220
1
2
TO-252
3
VOUT
Top View
1
2
IQ
COUT
10µF
3
SOT-223
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.2
Jan 02, 2006
1
G957
Global Mixed-mode Technology Inc.
Absolute Maximum Ratings
(Note 1)
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7V
Power Dissipation Internally Limited
(Note 2)
Maximum Junction Temperature. . . . . . . . . . . . 150°C
Storage Temperature Range. . -65°C ≤ TJ ≤+150°C
Reflow Temperature (soldering, 10sec). . . . 260°C
Thermal Resistance Junction to Ambient, (θJA)
SOT-223. . . . . . . . . . . . . . . . . . . . . . . . . . 148°C/W
TO-220. . . . . . . . . . . . . . . . . . . . . . . . . . . . 76°C/W
TO-252. . . . . . . . . . . . . . . . . . . . . . . . . . . 124°C/W
Thermal Resistance Junction to Case, (θJC)
SOT-223 . . . . . . . . . . . . . . . . . . . . . . . . . . 22°C/W
TO-252 . . . . . . . . . . . . . . . . . . . . . . . . . . . 7°C/W
Operating Conditions
(Note 1)
Input Voltage . . . . . . . . . . . . .. . . . . . . . . . . 2.7V~6.5V
Temperature Range. . . . . . . . . . . . .-40°C ≤ TA ≤85°C
Electrical Characteristics
VIN =3.3V, IO = 1A, CIN = 1µF, COUT =10µF, All specifications apply for TA = TJ = 25°C. [Note 3]
PARAMETER
CONDITION
MIN
TYP
MAX
Output Voltage
Line Regulation
Load Regulation
Output Impedance
Quiescent Current
Ripple Rejection
Dropout Voltage
Output Current
10mA < IO < 1A
3V < VIN < 6.5V, IO = 10mA
10mA < IO < 1A
200mA DC and 100mA AC, fo = 120Hz
VIN = 3V
fi = 120Hz,Vripple =1VP-P, Io = 100mA
IO = 0A
IO = 100mA
IO = 500mA
IO = 1A
Minimum footprint
VIN = 3V(SOT-223)
Continuous Test,
(0.0625 square inch)
TA = 25°C, TJ 150°C,
Mounted on 0.53
VOUT within ±2%
VIN = 3.3V(SOT-223)
square inch pcb area
Short Circuit Current
Over Temperature
UNIT
1.47
-------------------
1.5
6
19
80
0.54
54
1.13
1.14
1.21
1.32
1.53
30
50
--1
--------1.5
V
mV
mV
mΩ
mA
dB
660
---
---
mA
1
---
---
A
-----
1.6
150
-----
A
°C
V
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 150°C and IC will go into thermal shutdown. For the
G957 in SOT-223 package, θJA is 148°C/W ; in the TO-252 package, θJA is 124°C/W; in the TO-220 package, θJA is
76°C/W (No heat sink).
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 current and minimum input supply requirements.
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.
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.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.2
Jan 02, 2006
2
G957
Global Mixed-mode Technology Inc.
Typical Performance Characteristics
(VIN= +3.3V, CIN=1µF, COUT=10µF, TA=25°C, unless otherwise noted.)
Line Transient Response
Load Transient Response
Short Circuit Current
Ripple Rejection
60
IL=10mA
Ripple Rejection (dB)
50
IL=1A
40
IL=500mA
30
V IN=3.5V
COUT =10µF
V ripple=224mV
20
10
0
10
100
1000
10000
100000
1000000
Frequency (Hz)
Overcurrent Protection Characteristics
Start-up
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.2
Jan 02, 2006
3
G957
Global Mixed-mode Technology Inc.
Typical Performance Characteristics (continued)
Quiescent Current vs. Temperature
Dropout Voltage vs. IL
1.50
1.188
Dropout Voltage (V)
Quiescent Current (mA)
1.25
1.00
V IN=6.0V
0.75
0.50
V IN=5.0V
1.157
TA =85°C
TA=25°C
1.126
1.094
0.25
TA =-25°C
0.00
1.063
-25 -15 -5
5
15 25 35 45 55 65 75 85
0
0.25
0.5
Temperature (°C)
1
Output Voltage vs. VIN
Output Voltage vs. Temperature
1.525
1.53
IL=10mA
1.515
1.510
IL=10mA
1.525
Output Voltage (V)
1.520
Output Voltage (V)
0.75
IL (A)
V IN=5.0V
1.505
1.52
TA =85°C
1.515
1.51
TA =25°C
1.505
1.500
1.5
V IN=4.0V
1.495
TA =-25°C
1.495
-25
-10
5
20
35
50
65
80
3.5
4
4.5
5
5.5
6
6.5
Temperature( °C)
V IN (V)
SOT-223 Power Dissipation vs.
PCB Top Copper Area
TAMB = 25°C ; Still Air
SOT-223 Max. Power Dissipation vs.
TAMB (still air)
( Different PCB Top Copper Area )
3
3
2.5
2.5
7
Unit : in2
Max. Dissipation Power (W)
Max. Dissipation Power (W)
A=0.5
2
1.5
1
0.5
0
A=1.0
A=1.5
2
A=2.0
A=2.5
1.5
A=3.0
1
A=3.5
A=4.0
0.5
A=4.5
A=5.0
0
0.5
1.5
2.5
3.5
25
4.5
45
65
85
TAMB (°C)
PCB Top Copper Area (in2)
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.2
Jan 02, 2006
4
G957
Global Mixed-mode Technology Inc.
Typical Performance Characteristics (continued)
TO-252 Power Dissipation vs.
PCB Top Copper Area
TAMB = 25°C ; Still Air
TO-252 Max. Power Dissipation vs.
TAMB (still air)
( Different PCB Top Copper Area )
4
4
3.5
3.5
Unit:in2
Max. Dissipation Power (W)
Max. Dissipation Power (W)
A=0.5
3
2.5
2
1.5
1
A=1.0
3
A=1.5
2.5
A=2.0
A=2.5
2
A=3.0
1.5
A=3.5
1
A=4.0
0.5
0.5
0
0
A=4.5
A=5.0
0.5
1.5
2.5
3.5
PCB Top Copper Area (in2)
4.5
25
TO-220 Max. Power Dissipation vs.
Temperature
TAMB ( °C)
65
85
Heatsink Package Dimension
5
TO-220
4.5
Max. Power Dissipation (W)
45
4
Heatsink
3.5
3
2.5
2
1.5
1
Without Heatsink
0.5
0
-45
-15
15
45
75
Temparature ( °C)
105
Recommended Minimum Footprint
SOT-223
TO-252
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.2
Jan 02, 2006
5
G957
Global Mixed-mode Technology Inc.
Package Information
E
A
E1
E1
DIA
F
d
D
D1
I
L
e
C
A1
b
e1
b1
TO-220 (T3) Package
SYMBOL
MILLIMETER
INCH
MIN
MAX
MIN
MAX
A
A1
b
4.318
2.46
0.69
4.826
2.72
0.94
0.170
0.097
0.027
0.190
0.107
0.037
b1
C
D
D1
d
E
1.143
0.304
3.429
8.53
2.62
9.906
1.397
0.460
3.683
9.04
2.87
10.40
0.045
0.012
0.135
0.336
0.103
0.390
0.055
0.018
0.145
0.356
0.113
0.410
E1
4.953
5.22
0.195
0.206
DIA
e
3.708
2.29
3.962
2.79
0.146
0.090
0.156
0.110
e1
F
L
I
4.83
1.143
13.589
3.56
5.33
1.397
14.351
4.06
0.190
0.045
0.535
0.140
0.210
0.055
0.565
0.16
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.2
Jan 02, 2006
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G957
Global Mixed-mode Technology Inc.
A
E
A1
c1
b2
L2
Seating
Plane
D
H
L1
L3
L
c
b1
b
e
e1
E1
BACK VIEW Z-Z
TO-252 (T4) Package
SYMBOL
A
A1
b
b1
b2
c
c1
D
E
E1
e
e1
H
L
L1
L2
L3
MILLIMETERS
INCHES
MIN.
MAX.
MIN.
MAX.
2.19
0.89
0.64
0.76
5.21
0.46
0.46
5.97
6.35
2.38
1.14
0.88
1.14
5.46
0.58
0.58
6.22
6.73
0.086
0.035
0.025
0.030
0.205
0.018
0.018
0.235
0.250
0.094
0.045
0.035
0.045
0.215
0.023
0.023
0.244
0.265
MIN 4.32
2.28 BSC
4.57 BSC
9.40
0.51
0.64
0.88
1.15
MIN 0.170
0.090 BSC
0.180 BSC
10.42
----1.02
1.27
1.52
0.370
0.020
0.025
0.035
0.045
0.410
----0.040
0.050
0.060
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.2
Jan 02, 2006
7
G957
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
SYMBOL
MILLIMETER
INCH
MIN
MAX
MIN
MAX
A
1.55
1.80
0.061
0.071
A1
B
B1
C
0.02
0.60
2.90
0.24
0.12
0.80
3.10
0.32
0.0008
0.024
0.114
0.009
0.0047
0.031
0.122
0.013
D
E
6.30
3.30
6.70
3.70
0.248
0.130
0.264
0.146
e
e1
H
L
L2
α
2.30 BSC
4.60 BSC
6.70
0.090 BSC
0.181 BSC
7.30
0.264
0.90 MIN
0.06 BSC
0°
0.287
0.036 MIN
0.0024 BSC
10°
0°
10°
Taping Specification
Feed Direction
TO-252 Package Orientation
PACKAGE
Q’TY/REEL
Q’TY/TUBE
TO-220
-----
50 ea
TO-252
SOT-223
2,500 ea
2,500 ea
-----
Feed Direction
SOT-223 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.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 1.2
Jan 02, 2006
8
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