GMT G9218TF3T 1.8v 2a low dropout regulator with enable Datasheet

G9218
Global Mixed-mode Technology Inc.
1.8V 2A Low Dropout Regulator with Enable
Features
General Description
„Dropout voltage 0.7V @ IO = 2A
„Output current in excess of 2A
„Output voltage accuracy ±2.5%
„Quiescent current, typically 1.8mA
„Internal short circuit current limit
„Internal over temperature protection
„TO220 4pin Full-Mold package
„ON/OFF control
The G9218 positive 1.8V voltage regulator features
the ability to source 2A of output current. The dropout
voltage is 0.7V at 2A output current. The typical quiescent current is 1.8mA. Furthermore, the quiescent
current is smaller when the regulator is in the dropout
mode.
Familiar regulator features such as over temperature and over current protection circuits are
provided to prevent it from being damaged by
abnormal operating conditions. A Ven pin is provided to disable the output when needed.
Ordering Information
ORDER NUMBER MARKING
G9218TF1T
G9218TH1T
G9218
G9218
TEMP. RANGE
PIN PACKAGE
-40°C to +85°C
-40°C to +85°C
TO220F-4L
TO220F-4L
PIN OPTION
2
3
1
VIN
VIN
VO
VO
GND
GND
4
VEN
VEN
Order Number Identification
GXXXX
XX
X
X
Packing Type
Pin Option
Package Type
Part Number
PACKAGE TYPE
PIN OPTION
TF: TO220F-4L (short lead)
TH: TO220F-4L (long lead)
1
2
VO
1.: VIN
Typical Application
R=5kΩ
3
GND
PACKING
4
VEN
T: Tube
Package Type
IENH
VEN
TO220F-4L
IO
VIN
G9218
C1
4.7µF
IQ
VOUT
Top View
COUT
47µF
1 2
3
4
VIN VO GND VEN
R=5kΩ is recommended
R must be connected for current IENH
restriction as VEN > VIN+0.3V
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 0.1 Preliminary
Apr 20, 2004
1
G9218
Global Mixed-mode Technology Inc.
(Note 1)
Absolute Maximum Ratings
Input Voltage……………………….…….………..……..7V
VEN Voltage………………………..………………VIN+0.3V
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
TO220 Package………………...……….…….260°C, 10s
Continuous Power Dissipation (TA = +25°C)
TO220 No heatsink…………….….………….….…..1.5W
TO220 with infinite heatsink………….………..….…15W
(Note 1)
Operating Conditions
Input Voltage……………………………………..2.2V~7V
Temperature Range………….………..-40°C ≤ TA ≤85°C
Electrical Characteristics
VIN =5V, IO = 0.5A, CIN = 4.7µF, COUT =47µF, TA = TJ = 25°C unless otherwise specified [Note 3]
PARAMETER
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Ripple Rejection
Dropout Voltage
Short Circuit Current
Over Temperature
Enable Voltage High
Enable Voltage Low
Enable Bias Current Low
SYMBOL
VENH
VENL
IENL
CONDITION
MIN
TYP
MAX
UNIT
IO =0.5A
2.2V < VIN < 7V, IO = 10mA
50mA < IO < 2A
VIN = 3.3V
fi = 120Hz, 1VP-P, IO = 100mA
IO = 2A
1.755
--------------2
-----
1.8
0.5
0.5
1.8
45
0.7
1
150
-------
1.845
2
2
2.5
--0.9
------0.8
20
V
%
%
mA
dB
V
A
°C
V
V
µA
Output Active
Output Disabled
VEN = 0.4V
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 TO220F package, θJA is 60°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
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 2% 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.
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 0.1 Preliminary
Apr 20, 2004
2
Global Mixed-mode Technology Inc.
G9218
Block Diagram
VIN 1
2 VO
THERMAL
SHUTDOWN
BANDGAP
REFERENCE
HIGH / LOW
VEN 4
SHORT-CIRCUIT
PROTECTION
1.25V
_
+
R1
OUTPUT
ON/OFF
R2
TTL COMPATIBLE BUFFER
3
GND
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 0.1 Preliminary
Apr 20, 2004
3
G9218
Global Mixed-mode Technology Inc.
Typical Performance Characteristics
(VIN=5V, CIN=10µF, COUT =47µF, TA=25°C, unless otherwise noted.)
Line Transient
Load Transient
Short Circuit Current
Start-UP
Overcurrent Protection Characteristics
Ripple Rejection
60
IL=10mA
Ripple Rejection (dB)
50
40
IL=500mA
30
IL=1.0A
20
10
0
10
100
1000
10000
100000
1000000
Frequency (Hz)
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 0.1 Preliminary
Apr 20, 2004
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G9218
Global Mixed-mode Technology Inc.
Typical Performance Characteristics (continued)
VDROP vs. IL
Output Voltage vs. Temperature
900
1.864
800
IL=10mA
Dropout Voltage (mV)
Output Voltage (V)
1.844
1.824
VIN=5.0V
1.804
VIN=3.0V
1.784
TA=85 °C
700
600
TA=25 °C
500
400
300
200
100
1.764
TA=-25 °C
0
-25 -15 -5
5
15 25 35 45 55 65 75 85
0
0.5
1
IL (A)
Temperature (°C)
Quiescent Current vs. Temperature
2
Output Voltage vs. VIN
2.00
1.864
1.95
IL=10mA
1.90
1.844
VIN=5.0V
1.85
Output Voltage (V)
Quiescent Current (mA)
1.5
1.80
1.75
VIN=3.0V
1.70
1.65
1.60
TA=85 °C
1.824
1.804
TA=25 °C
TA=-25 °C
1.784
1.55
1.50
1.764
-25 -15 -5
5
15 25 35 45 55 65 75 85
2.5
3
3.5
4
Temperature (°C)
Max. Power Dissipation
vs. PCB Top Copper Area
5.5
6
6.5
7
Max. Power Dissipation
vs. TAMB
3
3
TAMB = 25°C ; Still Air
2.5
Max. Dissipation Power (W)
Max. Dissipation Power (W)
4.5 5
VIN (V)
2
1.5
1
0.5
Unit : in2
A=0.1
still air ; Different PCB Top Copper Area
2.5
A=0.2
A=0.3
A=0.4
2
A=0.5
A=1.0
1.5
A=1.5
A=2.0
A=2.5
1
A=3.0
A=3.5
0.5
A=4.0
A=4.5
A=5.0
0
0
0
0.5
1
1.5 2 2.5 3 3.5 4
PCB Top Copper Area (in2)
4.5
25
5
35
45
55
65
TAMB (°C)
75
85
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 0.1 Preliminary
Apr 20, 2004
5
G9218
Global Mixed-mode Technology Inc.
Package Information
E1
L
b
D
e
L1
L2
E
θ
A
C
A1
A2
He
TO220F-4L Package (short lead)
SYMBOL
A
A1
A2
D
E
E1
L
L1
L2
He
C
e
b
θ
MIN.
DIMENSION IN MM
NOM.
MAX.
MIN.
DIMENSION IN INCH
NOM.
MAX.
4.42
2.69
1.68
10.00
6.85
8.54
8.32
16.56
3.60
23.72
------------4°
4.57
2.79
1.78
10.10
6.95
8.64
8.52
16.66
3.70
24.22
0.48
2.54(TYP)
0.635(TYP)
7°
4.72
2.89
1.88
10.20
7.05
8.74
8.72
16.76
3.80
24.72
------------11°
0.174
0.106
0.066
0.394
0.269
0.336
0.328
0.652
0.142
0.934
------------4°
0.180
0.110
0.070
0.398
0.273
0.340
0.335
0.656
0.146
0.953
0.019
0.1(TYP)
0.025(TYP)
7°
0.186
0.114
0.074
0.402
0.278
0.344
0.343
0.660
0.150
0.93
------------11°
TEL: 886-3-5788833
http://www.gmt.com.tw
Ver: 0.1 Preliminary
Apr 20, 2004
6
G9218
Global Mixed-mode Technology Inc.
E1
L
b
D
e
L2
L1
E
θ
A
C
A2
A1
He
TO220F-4L Package (long lead)
SYMBOL
A
A1
A2
D
E
E1
L
L1
L2
He
C
e
b
θ
MIN.
DIMENSION IN MM
NOM.
MAX.
MIN.
DIMENSION IN INCH
NOM.
MAX.
4.42
2.69
1.68
10.00
6.85
8.54
13.15
16.56
3.60
28.44
------------4°
4.57
2.79
1.78
10.10
6.95
8.64
13.35
16.66
3.70
28.94
0.48
2.54(TYP)
0.635(TYP)
7°
4.72
2.89
1.88
10.20
7.05
8.74
13.55
16.76
3.80
29.44
------------11°
0.174
0.106
0.066
0.394
0.269
0.336
0.518
0.652
0.142
1.119
------------4°
0.180
0.110
0.070
0.398
0.273
0.340
0.526
0.656
0.146
1.139
0.019
0.1(TYP)
0.025(TYP)
7°
0.186
0.114
0.074
0.402
0.278
0.344
0.533
0.660
0.150
1.159
------------11°
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: 0.1 Preliminary
Apr 20, 2004
7
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