GM663022.5TB5T [GAMMA]
3A ULTRA LOW-DROPOUT REGULATOR; 超3A低压降稳压器
| 型号： | GM663022.5TB5T |
| 厂家： | 
GAMMA MICROELECTRONICS INC. |
| 描述： | 3A ULTRA LOW-DROPOUT REGULATOR |
| 文件： | 总11页 (文件大小：347K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Description
Features
The GM66300 series is 3.0A low-dropout linear voltage reg-
ulators that provide a low-voltage, and high-current output
with a minimum of external components.
3.0A minimum guaranteed output current
500mV dropout voltage
Ideal for 3.0V to 2.5V conversion
Ideal for 2.5V to 1.8V conversion
1% initial accuracy
The GM66300 series offers extremely low dropout
(typically 400mV at 3.0A) and low ground current (typically
36mA at 3.0A).
Low ground current
The GM66300 series is ideal for PC add-in cards that need
to convert from standard 3.0V to 2.5V and 2.5V to 1.8,
down to new, lower core voltages. A guaranteed maximum
dropout voltage of 500mV over all operating conditions
allows the GM66300 series to provide 2.5V from a supply
as low as 3V or 1.8V . The GM66300 series also has fast
transient response, for heavy switching applications. The
device requires only 47µF of output capacitance to
maintain stability and achieve fast transient response.
Current limiting and Thermal shutdown
Reversed-battery protection
Reversed-leakage protection
Fast transient response
TO-220 and TO-263 packages
TTL/CMOS compatible enable pin (GM66301 only)
Error flag output (GM66301 only)
Adjustable version (GM66302 only)
The GM66300 series is fully protected with overcurrent
limiting, thermal shutdown, reversed-battery protection,
reversed-lead insertion protection, and reversed-leakage
protection.
Application
LDO linear regulator for PC add-in cards
High-efficiency linear power supplies
SMPS post regulator
The GM66301 series offers a TTL-logic-compatible enable
pin, and an error flag that indicates undervoltage and
overcurrent conditions. Offered in a fixed voltages, 1.8V
and 2.5V, the GM66300 series comes in the TO-220 and
TO-263 packages, and is an ideal upgrade to older, NPN-
based linear voltage regulators.
Multimedia and PC processor supplies
Low-voltage microcontrollers
TM
Strong ARM processor supply
The GM66030 is adjustable version.
TYPICAL APPLICATION CIRCUITS
100kW
V
V
IN
OUT
3.3V
2.5V
V
V
OUT
IN
GM66300 - 2.5
GM66301 - 2.5
ENABLE
ERROR FLAG
V
FLG
SHUTDOWN
EN
OUTPUT
GND
V
V
+
V
V
OUT
IN
IN
OUT
47µF
GND
3.3V
2.5V
+
47µF
ENABLE
GM66302
SHUTDOWN
OUT
V
V
EN
+
47µF
IN
Adj
V
1.25V
IN
GND
3.3V
10µF
www.gammamicro.com
1
MARKING INFORMATION & PIN CONFIGURATIONS
2
2
TO-220- 5
TO-263-5(D PAK)
TO-220- 5
TO-220
TO-263-2 (D PAK)
GM66301
VVAYWW
GM66301
VVAYWW
GM66302
AYWW
GM66300
VVAYWW
GM66300
VVAYWW
EN
FLG
V
V
OUT
EN
FLG
IN
V
Adj
EN
IN
V
OUT
V
GND
V
GND
GND
IN
V
IN
V
V
V
OUT
OUT
IN
OUT
GND
GND
2
TO-263-5(D PAK)
Pinout On all devices, the Tab is grounded.
GM66300/ Three Terminal
GM66302
AYWW
Pin 1 = Input, 2 = Ground, 3 = Output
GM66301/ Five Terminal (Fixed Voltage Devices)
V V
= Output Voltage
(18=1.8V , 25=2.5V)
= Assembly Location
= Year
Pin 1 = Enable, 2 = Input, 3 = Ground,
4 = Output, 5 = Flag
A
Adj
EN
GM66302/ Adjustable with ON/ OFF Control
V
Y
IN
V
OUT
GND
Pin 1 = Enable, 2 = Input, 3 = Ground,
4 = Output, 5 = Adjust
W W
= Weekly
ORDERING INFORMATION
Ordering Number
Output Voltage
Package
Shipping
GM66300
TO-263-2
TO-263-2
TO-220
50 Units/ Tube
800 Units/ Tape & Reel
50 Units/ Tube
GM66300-1.8TA3T
GM66300-1.8TA3R
GM66300-1.8TB3T
GM66300-2.5TA3T
GM66300-2.5TA3R
GM66300-2.5TB3T
GM66301
1.8V
1.8V
1.8V
2.5V
2.5V
2.5V
TO-263-2
TO-263-2
TO-220
50 Units/ Tube
800 Units/ Tape & Reel
50 Units/ Tube
TO-263-5
TO-263-5
TO-220-5
TO-263-5
TO-263-5
TO-220-5
50 Units/ Tube
800 Units/ Tape & Reel
50 Units/ Tube
GM66301-1.8TA5T
GM66301-1.8TA5R
GM66301-1.8TB5T
GM66301-2.5TA5T
GM66301-2.5TA5R
GM66301-2.5TB5T
GM66302
1.8V
1.8V
1.8V
2.5V
2.5V
2.5V
50 Units/ Tube
800 Units/ Tape & Reel
50 Units/ Tube
TO-263-5
TO-263-5
TO-220-5
50 Units/ Tube
800 Units/ Tape & Reel
50 Units/ Tube
GM66302TA5T
Adj
Adj
Adj
GM66302TA5R
GM66302TB5T
* For detail Ordering Number identification, please see last page.
2
PIN DESCRIPTION
PIN Number PIN Number PIN NUMBER
PIN Name PIN Function
Enable (Input): TTL/CMOS compatible input.
V
GM66300
GM66301
GM66302
1
1
EN
Logic high=enable; logic low or open=shutdown.
V
Unregulated Input: +16V maximum supply.
1
2, TAB
3
2
2
3, TAB
4
IN
Ground: Ground pin and TAB are internally
connected.
3, TAB
GND
V
Regulator Output.
4
5
OUT
Error Flag (Output): Open collector output.
Active low indicates an output fault condition.
FLG
Adj
Adjustable
5
ABSOLUTE MAXIMUM RATINGS (Note 1)
Parameter
Symbol
Value
Unit
Power Dissipation
W
P
D
Internally limited
-20 to +20
V
IN
Supply Voltage
V
T
LEAD
Lead Temperature (Soldering, 5 sec)
Storage Temperature Range
ESD, Note 3
260
°C
T
-65 to +150
°C
STG
OPERATING RATINGS (Note 2)
Symbol
Value
+ 2.5 to +16
+16
Unit
Parameter
V
IN
Supply Voltage
V
V
EN
Enable Voltage
V
T
J
Operating junction Temperature Range
Thermal Resistance (TO-263-2 ,TO-220)
Maximum Power Dissipation, Note 4
-40 to +125
2.0
°C
q
°C/W
JC
FUNCTIONAL DIAGRAM
IN
OUT
O.V.
I
Limit
18V
1.18V
1.24V
Ref.
+
-
+
-
FLAG*
EN*
Thermal
Shut-down
GND
* GM66301 ONLY
3
ELECTRICAL CHARACTERISTICS
T = 25°C, bold values indicate -40°C
J
T
J
+125°C; unless noted
Typ
Parameter
Conditions
Min
Max
Unit
-1
I
O
= 10 mA
1
%
Output Voltage
10mA
I
3A, V
+ 1V
V
IN
8V
-2
2
%
%
OUT
OUT
I
= 10mA, V
+ 1V
V
IN
8V
3A
Line Regulation
Load Regulation
0.06
0.20
0.5
1.0
OUT
OUT
V
IN
= V
+ 1V, 10mA I
OUT OUT
%
Output Voltage change with
DV
/ DT
ppm/°C
20
100
200
OUT
Temperature Coef. Note 5
I
= 100mA, DV
= 750mA, DV
= 1.5A, DV
= -1%
65
OUT
OUT
OUT
I
I
I
= -1%
185
250
385
Dropout Voltage Note 6 & 9
OUT
OUT
OUT
mV
= -1%
OUT
= 3A, DV
= -1%
550
20
OUT
I
I
I
= 750mA, V = V
IN
+ 1V
10
17
45
OUT
OUT
OUT
OUT
= 1.5A, V = V
IN
+ 1V
Ground Current Note 7
mA
OUT
= 3A, V = V
IN
+ 1V
OUT
V
V -0.5V, I =10mA
OUT(nominal) OUT
Dropout Ground Pin Current
6
mA
IN
V
= 0V, VIN = V
+ 1V
4.5
A
Current Limit
OUT
OUT
Enable Input (Gm66301)
Logic Low (off)
0.8
V
Enable Input Voltage
Logic high (on)
2.5
V
15
30
V
V
= 2.5V
µA
µA
µA
EN
EN
75
Enable Input Current
2
= 0.8V
4
(Note 8)
Shutdown Output Current
Flag Output (GM66301)
Output Leakage Current
Output Low Voltage
Low Threshold
10
20
0.01
220
1
V
V
= 16V
µA
mV
%
OH
2
300
400
= 2.5V, I = 250µA Note 9
OL
IN
% of V
93
OUT
% of V
%
High Threshold
99.2
OUT
%
Hysteresis
1
Note 1. Exceeding the absolutemaximum ratings maydamage the device.
Note 2. The device isnot guaranteed tofunction outside itsoperating rating.
Note 3. Devices are ESDsensitive. Handing precautionsrecommended.
Note 4. P
=(T
-T ) ÷ q , where q depends upon theprinted circuit layout. See "Applications Information".
JA JA
D(max)
J(max)
A
Note 5. Output voltage temperaturecoefficient is DV
÷ (T - T
J(max) J(min)
) where T
is +125°C andT
is -40°C.
OUT(worst case)
J(max)
J(min)
Note 6. V =V -V
DO IN OUT
when V
decreases to 99%of its nominaloutput voltage with V =V
IN
+1V. For voltages below2.5V,
OUT
OUT
dropout voltage isthe input-to-output voltage differential with the minimum inputvoltage being 2.5V. Minimum input
operating voltage is 2.25V.
Note 7. I is the quiescentcurrent. I = I
+ I
GND
IN
GND
OUT
Note 8. V
0.8V, V
8V, and V
OUT
= 0V
EN
IN
Note 9. For a 1.8Vdevice, V = 2.5V.
IN
4
TYPICAL CHARACTERISTICS
600
400
350
2.8
2.6
2.4
2.2
2
I
= 100mA
LOAD
500
V
= 2.5V
OUT
300
250
200
150
100
50
V
= 2.5V
OUT
400
300
200
100
0
I
= 3A
LOAD
V
= 1.8V
OUT
V
= 1.8V
OUT
1.8
1.6
1.4
1.2
I
= 1.5A
LOAD
I
= 3.0A
LOAD
0
-40 -20
0
20 40 60 80 100 120
Temperature (°C)
1.2 1.6
2.0
2.4
2.8
3.2
3.6
0
1000
2000
3000
Output Current (mA)
Input Voltage(V)
Figure 3. Dropout Characteristics
Figure 2. Dropout Voltage vs.
Temperature
Figure 1. Dropout Voltage vs. Output
Current
100
25
20
15
10
5
8
90
80
70
60
50
40
30
20
10
0
7
6
5
4
3
2
1
0
I
= 3000mA
LOAD
V
= 2.5V
OUT
V
= 2.5V
OUT
V
= 1.8V
OUT
V
= 1.8V
I
= 1500mA
OUT
LOAD
I
= 10mA
I
= 1500mA
I
= 1000mA
LOAD
LOAD
LOAD
0
-40 -20
0
20 40 60 80 100 120
Temperature (°C)
-40 -20
0
20 40 60 80 100 120
Temperature (°C)
0
2
4
6
8
10
12
Supply Voltage (V)
Figure 4. Ground Current
vs. Supply Voltage
Figure 6. Ground Current
vs. Temperature
Figure 5. Ground Current
vs. Temperature
6
5
4
3
2
1
0
6
5
4
3
2
1
0
60
50
40
30
20
10
0
V
=5V
IN
Typical 1.8V Device
Flag High (OK)
V
= 2.5V
OUT
Typical 2.5V Device
V
= 1.8V
OUT
V
= V
+ 1V
OUT (NOM)
IN
V
=0
I
= 3000A
Flag Low (Fault)
OUT
LOAD
0.01 0.1
1
10
100 1000 10000
)
-40 -20
0
20 40 60 80 100 120
Temperature (°C)
-40 -20
0
20 40 60 80 100 120
Temperature (°C)
Resistance (k
Figure 7. Ground Current
vs. Temperature
Figure 8. Short Circuit Current
vs. Temperature
Figure 9. Error Flag Pull-up
Resistor
5
APPLICATION INFORMATION
The GM66300 series is a high performance with low-
dropout voltage regulator, suitable for moderate to
high-current voltage regulator applications. Its 500mV
dropout voltage at full load makes it especially valuable
in battery-powered systems and as a high-efficiency
noise filter in post-regulator applications.
Calculate the power dissipation of the regulator from
these numbers and the device parameters from this
datasheet, where the ground current is taken from
data sheet
P = (V - V )I
D IN
+ V
I
OUT OUT
IN
GND
The heat sink thermal resistance is determined by:
T - TA
J(MAX)
Unlike older NPN-pass transistor designs, where the
minimum dropout voltage is limited by the base-to-
emitter voltage drop and collector-to-emitter saturation
voltage. Dropout performance of the PNP output of
q
=
- (q + q
JC
)
SA
CS
P
D
these devices is limited only by the low V saturation
CE
where T
125°C and q is between 0°C and
CS
J(max)
Voltage.
2°C/W.
The GM66300 series regulator is fully protected from
damage due to fault conditions. Current limiting is
provided. This limiting is linear, output current during
overload conditions is constant. Thermal shutdown
disables the device when the die temperature exceeds
the maximum safe operating temperature. Transient
protection allows device (and load) survival even when
the input voltage spikes above and below nominal. The
output structure of these regulators allows voltages in
excess of the desired output voltage to be applied
without reverse current flow.
The heat sink may be significantly reduced in
applications where the minimum input voltage is
known and is large compared with the dropout
voltage. Use a series input resistor to drop
excessive voltage and distribute the heat between
this resistor and the regulator. The low dropout
properties of Super beta PNP regulators allow
significant reductions in regulator power dissipation
and the associated heat sink without compromising
performance. When this technique is employed, a
capacitor of at least 1.0µF is needed directly
between the input and regulator ground.
V
GM66300 - X.X
V
Output Capacitor
IN
OUT
V
V
OUT
IN
The GM66300 series requires an output capacitor to
maintain stability and improve transient response.
Proper capacitor selection is important to ensure
proper operation. The GM66300 series output
capacitor selection is dependent upon the ESR
(equivalent series resistance) of the output capacitor
to maintain stability. When the output capacitor is
47µF or greater, the output capacitor should have
GND
+
+
C
C
IN
OUT
less than 1W of ESR. This will improve transient
response as well as promote stability. Ultra-low-ESR
capacitors, such as ceramic chip capacitors may
promote instability. These very low ESR levels may
cause an oscillation and/or underdamped transient
response. When larger capacitors are used, the
ESR requirement approaches zero. A 100µF
ceramic capacitor can be used on the output while
maintaining stability. A low-ESR 47µF solid tantalum
capacitor works extremely well and provides good
transient response and stability over temperature.
Aluminum electrolytics can also be used, as long as
the ESR of the capacitor is 1W.
Figure 10. Capacitor Requirements
Thermal Design
Linear regulators are simple to use. The most
complicated design parameters to consider are thermal
characteristics.
Thermal design requires four application-specific
parameters:
Maximum ambient temperature (T )
A
Output Current (I
)
OUT
Output Voltage (V
)
OUT
Input Voltage (V )
IN
The value of the output capacitor can be increased
without limit. Higher capacitance values help to
improve transient response, ripple rejection, and
reduce output noise.
Ground Current (I
)
GND
6
Input Capacitor
The error flag is an open-collector output that can
sink 10mA during a fault condition. Low output
voltage can be caused by a number of problems,
including an overcurrent fault (device in current limit)
or low input voltage. The flag is inoperative during
overtemperature shutdown. When the error flag is
not used, it is best to leave it open. The flag pin can
be tied directly to pin 4, the output pin.
An input capacitor of 1µF or greater is recommended
when the device is more than 4 inches away from the
bulk as supply capacitance, or when the supply is a
battery. Small surfacemount ceramic chip capacitors
can be used for the bypassing. Larger values will help
to improve ripple rejection by bypassing the input to the
regulator, further improving the integrity of the output
voltage.
Enable Input
Transient Response and 3.3V to 2.5V and 2.5V to
1.8V Conversions
The GM66300 series version features an enable
input for on/off control of the device. Its shutdown
state draws "zero" current. The enable input is
TTL/CMOS compatible for simple logic interface, but
can be connected to up to 20V. When enabled, it
draws approximately 15µA.
The GM66300 series has excellent transient response
to variations in input voltage and load current. The
device has been designed to respond quickly to load
current variations and input voltage variations. Large
output capacitors are not required to obtain this
performance. A standard 47µF output capacitor,
preferably tantalum, is all that is required. Larger
values improve performance even further.
By virtue of its low-dropout voltage, this device does
not saturate into dropout as readily as similar NPN-
based designs. When converting from 3.3V to 2.5V or
2.5V to 1.8V, the NPN-based regulators are already
operating in dropout, with typical dropout requirements
of 1.2V or greater. To convert down to 2.5V without
operating in dropout, NPN-based regulators require an
input voltage of 3.7V at the very least.
The GM66300 series regulator will provides excellent
performance with an input as low as 3.0V or 2.5V
respectively. This gives the PNP-based regulators a
distinct advantage over older, NPN-based linear
regulators. A typical NPN regulator does not have the
headroom to do this conversion.
Minimum Load Current
The GM66300 series regulator is specified between
finite loads. If the output current is too small, leakage
currents dominate and the output voltage rises. A
10mA minimum load current is necessary for proper
regulation.
Error Flag
The GM66300 series version features an error flag
circuit which monitors the output voltage and signals
an error condition when the voltage 5% below the
nominal output voltage.
7
TO-220 PACKAGE OUTLINE DIMENSIONS
4.50 ± 0.20
9.90 ± 0.20
8.0
7.0
3.60 ± 0.20
8.70
+0.1
2.80 ± 0.10
1.30
-0.05
1.30 ± 0.10
1.70
3.70 ± 0.20
1.50 DP0.20
3°
0.9
7.0
4.60
8.40
3°
3°
1.46
1.00
45°
3.00
3-R0.2
1.27 ± 0.10
+0.1
0.80 ± 0.10
1.52 ± 0.10
0.50
-0.05
2.40 ± 0.20
2.54 TYP
(2.54 ± 0.20)
3°
3°
2 - R 0.3
Unit: mm
10.00 ± 0.20
TO-220-5 PACKAGE OUTLINE DIMENSIONS
9.97 ± 0.20
4.50 ± 0.20
9.90 ± 0.20
8.0 ± 0.20
7.0
3.60 ± 0.20
8.70
+0.1
2.80 ± 0.10
1.30
-0.05
1.30 ± 0.10
1.70
3.70 ± 0.20
1.50 DP0.20
3°
4.60
7.0 ± 0.20
9.20 ± 0.20
8.40
3°
3°
1.2
3-R0.2
5-0.8 ± 0.10
+0.1
0.50
-0.05
2.40 ± 0.20
1.7(TYP)
3°
3°
2 - R 0.3
Unit: mm
10.00 ± 0.20
8
TO-263-2 PACKAGE OUTLINE DIMENSIONS
9.90 ± 0.20
4.50 ± 0.20
+0.1
1.30
15°
-0.05
0.40
1.20
Pad Layout
3°
1.50 DP0.20
0.63
17.02
9.20 ± 0.20
0.33
8.38
0.12
3.05
15.3 ± 0.20
0.10 ± 0.01
R0.30
3°
3°
1.4 ± 0.20
2.40 ± 0.20
2.00 ± 0.10
0.42
0.24
6.096
4.90 ± 0.20
10.66
2.54 ± 0.10
0.75
+0.1
0.50
-0.05
0.90 ± 0.10
R0.30
1.27 ± 0.10
0.04
1.016
2.54 TYP
10.0 ± 0.20
(2.54 ± 0.20)
7.0
4.0
0.40
0.90
Inches
(
)
mm
3°
3°
R 0.3
R 0.45
7.2
9.20 ± 0.20
10.00 ± 0.20
4.90 ± 0.20
Unit: mm
TO-263-5 PACKAGE OUTLINE DIMENSIONS
9.90
4.50
1.30
15'
0.40
1.20
3°
4.60
1.50 DP0.20
9.20
Pad Layout
0.10
3°
15.3
17.5
2.00
0.75
9
2.40
3.8
1.20
R0.30
4.90
1.7
R0.30
2.54
0.50
10.0
1.70 TYP
(1.70 ± 0.20)
0.80
8.0
7.0
1.07
0.40
4.40
1.75
3°
3°
R 0.3
0.90
R 0.45
7.2
Units: mm
9.20
15.30
10.00
4.90
Unit: mm
9
ORDERING NUMBER
GM 66300/ 6630X 1.8 TA3 T
Gamma Micro.
Shipping
Circuit Type
R: Tape & Reel
T: Tube
Package
Output Voltage
1.8: 1.8V
TA3: TO-263-2
TA5: TO-263-5
TB3: TO-220-3
TB5: TO-220-5
2.5: 2.5V
Blank: Adj
10
11
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