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Электронный компонент: G9218TH1T

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Ver: 0.1 Preliminary
Apr 20, 2004
TEL: 886-3-5788833
http://www.gmt.com.tw
1
G9218
Global Mixed-mode Technology Inc.
1.8V 2A Low Dropout Regulator with Enable
Features
Dropout voltage 0.7V @ I
O
= 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
General Description
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 qui-
escent current is 1.8mA. Furthermore, the quiescent
current is smaller when the regulator is in the dropout
mode.
Familiar regulator features such as over tem-
perature and over current protection circuits are
provided to prevent it from being damaged by
abnormal operating conditions. A V
en
pin is pro-
vided to disable the output when needed.
Ordering Information
PIN OPTION
ORDER NUMBER MARKING TEMP. RANGE
PIN PACKAGE
1 2 3 4
G9218TF1T
G9218
-40C to +85C
TO220F-4L
V
IN
V
O
GND V
EN
G9218TH1T
G9218
-40C to +85C
TO220F-4L
V
IN
V
O
GND V
EN
Order Number Identification
GXXXX XX X X

Packing Type
Pin Option
Package Type
Part Number
PACKAGE TYPE
PIN OPTION
PACKING
TF: TO220F-4L (short lead)
1 2 3 4
T: Tube
TH: TO220F-4L (long lead)
1.: V
IN
V
O
GND V
EN
Typical Application Package Type
1 2
3
TO220F-4L
4
V
IN
V
O
GND V
EN
Top View
V
IN
G9218
C1
4.7F
IQ
V
OUT
I
O
C
OUT
47F
R=5k
is recommended
R must be connected for current I
ENH
restriction as V
EN
> V
IN
+0.3V
V
EN
R=5k
I
ENH
1 2
3
TO220F-4L
4
V
IN
V
O
GND V
EN
Top View
1 2
3
TO220F-4L
4
V
IN
V
O
GND V
EN
Top View
V
IN
G9218
C1
4.7F
IQ
V
OUT
I
O
C
OUT
47F
R=5k
is recommended
R must be connected for current I
ENH
restriction as V
EN
> V
IN
+0.3V
V
EN
R=5k
I
ENH
Ver: 0.1 Preliminary
Apr 20, 2004
TEL: 886-3-5788833
http://www.gmt.com.tw
2
G9218
Global Mixed-mode Technology Inc.
Absolute Maximum Ratings
(Note 1)
Input Voltage......................................................7V
V
EN
Voltage...............................................V
IN
+0.3V
Power Dissipation Internally Limited (Note 2)
Maximum Junction Temperature...........................150C
Storage Temperature Range..........-65C
T
J
+150C
Lead Temperature, Time for Wave Soldering
TO220 Package......................................260C, 10s
Continuous Power Dissipation (T
A
= +25C)
TO220 No heatsink..........................................1.5W
TO220 with infinite heatsink...............................15W
Operating Conditions
(Note 1)
Input Voltage............................................2.2V~7V
Temperature Range........................-40C
T
A
85C

Electrical Characteristics
V
IN
=5V, I
O
= 0.5A, C
IN
= 4.7F, C
OUT
=47F, T
A
= T
J
= 25C unless otherwise specified [Note 3]
PARAMETER SYMBOL
CONDITION
MIN
TYP
MAX
UNIT
Output Voltage
I
O
=0.5A
1.755
1.8
1.845
V
Line Regulation
2.2V < V
IN
< 7V, I
O
= 10mA
---
0.5
2
%
Load Regulation
50mA < I
O
< 2A
---
0.5
2
%
Quiescent Current
V
IN
= 3.3V
---
1.8
2.5
mA
Ripple Rejection
fi = 120Hz, 1V
P-P
, I
O
= 100mA
--- 45
--- dB
Dropout Voltage
I
O
= 2A
---
0.7
0.9
V
Short Circuit Current
---
1
---
A
Over Temperature
---
150
--- C
Enable Voltage High
V
ENH
Output
Active
2
--- ---
V
Enable Voltage Low
V
ENL
Output
Disabled
---
--- 0.8
V
Enable Bias Current Low
I
ENL
V
EN
= 0.4V
---
---
20
A

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
resistance,
JA
, and ambient temperature T
A
. The maximum allowable power dissipation at any ambient
temperature 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 TO220F package,
JA
is 60C/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 regu-
lator output no longer maintains regulation against fur-
ther reductions in input voltage. Measured when the
output drops 2% below its nominal value, dropout volt-
age is affected by junction temperature, load current
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 affected.
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
temperature 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: 0.1 Preliminary
Apr 20, 2004
TEL: 886-3-5788833
http://www.gmt.com.tw
3
G9218
Global Mixed-mode Technology Inc.
Block Diagram
SHORT-CIRCUIT
PROTECTION
THERMAL
SHUTDOWN
BANDGAP
REFERENCE
3
GND
2 V
O
1
V
IN
R1
R2
1.25V
_
+
OUTPUT
ON/OFF
4
HIGH / LOW
V
EN
TTL COMPATIBLE BUFFER
SHORT-CIRCUIT
PROTECTION
THERMAL
SHUTDOWN
BANDGAP
REFERENCE
3
GND
2 V
O
1
V
IN
R1
R2
1.25V
_
+
_
+
OUTPUT
ON/OFF
4
HIGH / LOW
V
EN
TTL COMPATIBLE BUFFER
Ver: 0.1 Preliminary
Apr 20, 2004
TEL: 886-3-5788833
http://www.gmt.com.tw
4
G9218
Global Mixed-mode Technology Inc.
Typical Performance Characteristics
(V
IN
=5V, C
IN
=10F, C
OUT
=47F, T
A
=25C, unless otherwise noted.)
0
10
20
30
40
50
60
10
100
1000
10000
100000
1000000
Frequency (Hz)
Ripple Rejection (dB)
I
L
=10mA
I
L
=500mA
I
L
=1.0A
Line Transient
Load Transient
Short Circuit Current
Start-UP
Overcurrent Protection Characteristics
Ripple Rejection
Ver: 0.1 Preliminary
Apr 20, 2004
TEL: 886-3-5788833
http://www.gmt.com.tw
5
G9218
Global Mixed-mode Technology Inc.
Typical Performance Characteristics
(continued)
1.50
1.55
1.60
1.65
1.70
1.75
1.80
1.85
1.90
1.95
2.00
-25 -15 -5
5 15 25 35 45 55 65 75 85
Temperature (C)
Quiescent Current (mA)
V
IN
=3.0V
V
IN
=5.0V
0
0.5
1
1.5
2
2.5
3
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
PCB Top Copper Area (in
2
)
Max. Dissipation Power (W)
0
0.5
1
1.5
2
2.5
3
25
35
45
55
65
75
85
T
AMB
(C)
Max. Dissipation Power (W)
A=0.1
A=0.2
A=0.3
A=0.4
A=0.5
A=1.0
A=1.5
A=2.0
A=2.5
A=3.0
A=3.5
A=4.0
A=4.5
A=5.0
still air ; Different PCB Top Copper Area
Max. Power Dissipation
vs. PCB Top Copper Area
T
AMB
= 25C ; Still Air
Max. Power Dissipation
vs. T
AMB
Unit : in
2
Quiescent Current vs. Temperature
1.764
1.784
1.804
1.824
1.844
1.864
-25 -15 -5
5 15 25 35 45 55 65 75 85
Temperature (C)
Output Voltage (V)
V
IN
=3.0V
V
IN
=5.0V
I
L
=10mA
Output Voltage vs. Temperature
1.764
1.784
1.804
1.824
1.844
1.864
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
V
IN
(V)
Output Voltage (V)
Output Voltage vs. V
IN
I
L
=10mA
T
A
=85 C
T
A
=25 C
T
A
=-25 C
0
100
200
300
400
500
600
700
800
900
0
0.5
1
1.5
2
I
L
(A)
Dropout Voltage (mV)
V
DROP
vs. I
L
T
A
=85 C
T
A
=25 C
T
A
=-25 C
Ver: 0.1 Preliminary
Apr 20, 2004
TEL: 886-3-5788833
http://www.gmt.com.tw
6
G9218
Global Mixed-mode Technology Inc.
Package Information
TO220F-4L Package (short lead)
DIMENSION IN MM
DIMENSION IN INCH
SYMBOL
MIN. NOM. MAX. MIN. NOM. MAX.
A 4.42 4.57 4.72 0.174 0.180 0.186
A1 2.69 2.79 2.89 0.106 0.110 0.114
A2 1.68 1.78 1.88 0.066 0.070 0.074
D 10.00 10.10 10.20 0.394 0.398 0.402
E 6.85 6.95 7.05 0.269 0.273 0.278
E1 8.54 8.64 8.74 0.336 0.340 0.344
L 8.32 8.52 8.72 0.328 0.335 0.343
L1 16.56 16.66 16.76 0.652 0.656 0.660
L2 3.60 3.70 3.80 0.142 0.146 0.150
He 23.72 24.22 24.72 0.934 0.953 0.93
C ----- 0.48 ----- ----- 0.019
-----
e -----
2.54(TYP)
----- ----- 0.1(TYP)
-----
b -----
0.635(TYP)
----- -----
0.025(TYP)
-----
4
7
11
4
7
11
D
E
b
E1
e
A
A1
C
A2
L
L1
L2
He
D
E
b
E1
e
A
A1
C
A2
L
L1
L2
He
Ver: 0.1 Preliminary
Apr 20, 2004
TEL: 886-3-5788833
http://www.gmt.com.tw
7
G9218
Global Mixed-mode Technology Inc.
TO220F-4L Package (long lead)
DIMENSION IN MM
DIMENSION IN INCH
SYMBOL
MIN. NOM. MAX. MIN. NOM. MAX.
A 4.42 4.57 4.72 0.174 0.180 0.186
A1 2.69 2.79 2.89 0.106 0.110 0.114
A2 1.68 1.78 1.88 0.066 0.070 0.074
D 10.00 10.10 10.20 0.394 0.398 0.402
E 6.85 6.95 7.05 0.269 0.273 0.278
E1 8.54 8.64 8.74 0.336 0.340 0.344
L 13.15 13.35 13.55 0.518 0.526 0.533
L1 16.56 16.66 16.76 0.652 0.656 0.660
L2 3.60 3.70 3.80 0.142 0.146 0.150
He 28.44 28.94 29.44 1.119 1.139 1.159
C ----- 0.48 ----- ----- 0.019
-----
e -----
2.54(TYP)
----- ----- 0.1(TYP)
-----
b -----
0.635(TYP)
----- -----
0.025(TYP)
-----
4
7
11
4
7
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.
D
E
b
E1
e
A
A1
C
A2
L
L1
L2
He
D
E
b
E1
e
A
A1
C
A2
L
L1
L2
He