GM665011.8TB3T [GAMMA]
5A ULTRA LOW - DROPOUT REGULATOR; 5A ULTRA LOW - 差稳压器
| 型号： | GM665011.8TB3T |
| 厂家： | 
GAMMA MICROELECTRONICS INC. |
| 描述： | 5A ULTRA LOW - DROPOUT REGULATOR |
| 文件： | 总11页 (文件大小：214K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Power Management
GM66500 SERIES
A A
MICROELECTRONICS
5A ULTRA LOW - DROPOUT REGULATOR
Features
Description
The GM66500 series is 5.0A low-dropout linear voltage reg-
ulators that provide a low-voltage, high-current output with
a minimum of external components.
5.0A minimum guaranteed output current
400mV dropout voltage
Designed for 3.0V to 2.5V conversion
Designed for 2.5V to 1.8V conversion
1% initial accuracy
The GM66500 series offers extremely low dropout
(typically 400mV at 5.0A) and low ground current (typically
70mA at 5.0A).
Low ground current
The GM66500 series is ideal for PC add-in cards that need
to convert from standard 3.0V to 2.5V and 2.5V to 1.8V,
down to new, lower core voltages. A guaranteed maximum
dropout voltage of 500mV over all operating conditions
allows the GM66500 series to provide 2.5V from a supply
as low as 3V. The GM66500 series also has fast
Current limiting and Thermal shutdown
Reversed-battery and reversed-lead insertion
protection
Reversed-leakage protection
Fast transient response
transient response, for heavy switching applications. The
device requires only 47µF of output capacitance to
maintain stability and achieve fast transient response.
TO-220 and TO-263 packages
TTL/CMOS compatible enable pin (GM66501 only)
Error flag output (GM66501 only)
Ceramic capacitor stable (See Application
Information)
The GM66500 series is fully protected with overcurrent
limiting, thermal shutdown, reversed-battery protection,
reversed-lead insertion protection, and reversed-leakage
protection.
Application
The GM66501 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 GM66500 series comes in the TO-220 and
TO-263 packages and is an ideal upgrade to older, NPN-
based linear voltage regulators.
Low Voltage Digital ICs
LDO linear regulator for PC add-in cards
High-efficiency linear power supplies
SMPS post regulator
Multimedia and PC processor supplies
Low-voltage microcontrollers
TM
Strong ARM processor supply
TYPICAL APPLICATION CIRCUITS
100kW
V
V
IN
OUT
GM66501 - 2.5
3.3V
ENABLE
2.5V
ERROR FLAG
V
V
V
FLG
OUT
IN
SHUTDOWN
EN
OUTPUT
GM66500 - 2.5
V
V
V
V
OUT
IN
IN
OUT
GND
GND
3.3V
2.5V
+
+
+
+
1.0µF
47µF
1.0µF
47µF
www.gammamicro.com
1
Power Management
GM66500 SERIES
A A
MICROELECTRONICS
5A ULTRA LOW - DROPOUT REGULATOR
MARKING INFORMATION & PIN CONFIGURATIONS (TOP VIEW)
2
2
TO-220- 5
TO-263-5(D PAK)
TO-220
TO-263-2 (D PAK)
GM66501
VVAYWW
GM66501
VVAYWW
GM66500
VVAYWW
GM66500
VVAYWW
EN
FLG
V
V
OUT
EN
FLG
IN
V
IN
V
OUT
V
GND
GND
IN
GND
V
OUT
V
V
OUT
IN
GND
Pinout On all devices, the Tab is grounded.
GM66500/ Three Terminal
V V
A
= Output Voltage (18=1.8V , 25=2.5V)
= Assembly Location
= Year
Pin 1 = Input, 2 = Ground, 3 = Output
GM66501/ Five Terminal (Fixed Voltage Devices)
Y
W W
= Weekly
Pin 1 = Enable, 2 = Input, 3 = Ground,
4 = Output, 5 = Flag
ORDERING INFORMATION
ORDERING NUMBER
OUTPUT VOLTAGE
PACKAGE
SHIPPING
GM66500
TO-263-2
TO-263-2
TO-220
50 Units/ Tube
GM66500-1.8TA3T
GM66500-1.8TA3R
GM66500-1.8TB3T
GM66500-2.5TA3T
GM66500-2.5TA3R
GM66500-2.5TB3T
GM66500-3.3TA3T
GM66500-3.3TA3R
GM66500-3.3TB3T
GM66500-5.0TA3T
GM66500-5.0TA3R
GM66500-5.0TB3T
GM66501
1.8V
1.8V
1.8V
2.5V
2.5V
2.5V
3.3V
3.3V
3.3V
5.0V
5.0V
5.0V
800 Units/ Tape & Reel
50 Units/ Tube
TO-263-2
TO-263-2
TO-220
50 Units/ Tube
800 Units/ Tape & Reel
50 Units/ Tube
TO-263-2
TO-263-2
TO-220
50 Units/ Tube
800 Units/ Tape & Reel
50 Units/ Tube
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
GM66501-1.8TA5T
GM66501-1.8TA5R
GM66501-1.8TB5T
GM66501-2.5TA5T
GM66501-2.5TA5R
GM66501-2.5TB5T
1.8V
1.8V
1.8V
2.5V
2.5V
2.5V
50 Units/ Tube
800 Units/ Tape & Reel
50 Units/ Tube
* For detail Ordering Number identification, please see last page.
2
Power Management
GM66500 SERIES
A A
MICROELECTRONICS
5A ULTRA LOW - DROPOUT REGULATOR
PIN DESCRIPTION
PIN number
GM66500
PIN Number
GM66501
PIN Name
PIN Function
Enable (Input): TTL/CMOS compatible input.
Logic high=enable; logic low or open=shutdown.
1
V
EN
V
Unregulated Input: +16V maximum supply.
1
2, TAB
3
2
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
ABSOLUTE MAXIMUM RATINGS
Symbol
Value
Internally limited
-20 to +20
260
Parameter
Unit
P
V
Power Dissipation
W
V
D
Input Supply Voltage (Note 1)
Lead Temperature (Soldering, 5 sec)
Storage Temperature Range
EDS, Note 3
IN
T
LEAD
°C
°C
T
STG
-65 to +150
OPERATING RATINGS
Symbol
Value
Unit
Parameter
V
IN
Supply Voltage
+ 2.25 to +16
+16
-40 to +125
2.0
V
V
V
EN
Enable Voltage
T
Operating junction Temperature Range
Thermal Resistance (TO-263-2 ,TO-220)
Maximum Power Dissipation, Note 4
°C
J
q
°C/W
JC
BLOCK DIAGRAM
IN
OUT
O.V.
I
Limit
18V
1.18V
1.24V
Ref.
+
-
+
-
FLAG*
EN*
Thermal
Shut-down
GND
* GM66501 ONLY
3
Power Management
GM66500 SERIES
A A
MICROELECTRONICS
5A ULTRA LOW - DROPOUT REGULATOR
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
+ 1.0V
10mA
I
16V
5A, VOUT
-2
2
%
%
OUT
IN
V
I
= 10mA,V
+ 1.0V
V
16V
5A
Line Regulation
Load Regulation
0.06
0.20
0.5
1.0
OUT
OUT
IN
V
IN
= V
10mA I
OUT
+ 1.0V,
%
OUT
Output Voltage change with
DV
/ DT
ppm/°C
20
100
OUT
Temperature Coef. Note 5
DV
OUT
= -2% (Note 3)
I
= 250mA
= 2.5A
= 5A
OUT
125
320
400
250
575
Dropout Voltage Note 6
mV
I
OUT
OUT
I
I
= 2.5A, V = V
IN
+ 0.8V
OUT
OUT
15
70
Ground Current Note 7
mA
I
= 5A, V = V
IN
+ 0.8V Charactize
OUT
OUT
Ground Pin Current at
V
V
-0.5V, I =10mA
OUT
2.1
7.5
mA
IN
OUT(nominal)
Dropout I
GNDDO
V
OUT
= 0V, VIN = V
+ 1.0V(Note 4)
A
Current Limit
OUT
µV
C
= 47µF, lOUT = 100mA, 10Hz to 100kHz
Output Noise Voltage
260
OUT
(rms)
Enable Input (GM66501)
Logic Low (off)
0.8
V
Enable Input Voltage
Logic high (on)
2.25
V
30
35
V
V
= V
µA
µA
µA
EN
IN
75
Enable Input Current
2
= 0.8V
EN
4
(Note 8)
Shutdown Output Current
Flag Output (GM66501)
Output Leakage Current
Output Low Voltage
Low Threshold
10
0.01
220
1
V
V
= 16V
µA
mV
%
OH
2
300
400
= 2.25V, I = 250µA (Note 9)
OL
IN
1% of V
93
OUT
OUT
1% of V
%
High Threshold
99.2
%
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 98%of its nominaloutput voltage with V =V
IN
+1V. For voltages below2.25V,
OUT
OUT
dropout voltage isthe input-to-output voltage differential with the minimum inputvoltage being 2.25V. 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 2.5Vdevice, V = 2.25V(device isin dropout).
IN
Note 10.Design with proper heat sink to dissapate heat to keep chip from thermal protection when VIN -VOUT 0.6V
4
Power Management
GM66500 SERIES
A A
MICROELECTRONICS
5A ULTRA LOW - DROPOUT REGULATOR
TYPICAL CHARACTERISTICS
2.8
600
450
V
= 1.8V
OUT
400
V
= 1.8V
2.6
2.4
2.2
2
OUT
I
= 100mA
LOAD
500
400
300
200
100
0
350
300
250
200
150
100
50
V
= 2.5V
OUT
I
= 2.5A
LOAD
I
= 5A
LOAD
V
= 2.5V
OUT
1.8
1.6
1.4
I
= 5A
LOAD
0
-40 -20
0
20 40 60 80 100 120 140
Temperature (°C)
Input Voltage(V)
Figure 3. Dropout Characteristics
Output Current (mA)
Figure 2. Dropout Voltage vs.
Temperature
Figure 1. Dropout Voltage vs. Output
Current
10
9
8
7
6
5
4
3
2
1
0
180
30
25
20
15
10
5
I
= 10mA
LOAD
160
140
120
100
80
V
= V
+ 1V
OUT
IN
V
= 2.5V
OUT
V
= 2.5V
OUT
V
= 1.8V
OUT
V
= 1.8V
OUT
I
= 5A
60
LOAD
I
= 2.5A
LOAD
40
I
= 2.0A
I
= 2.5A
LOAD
20
LOAD
V
= V
+ 1V
OUT
IN
0
0
-40 -20
0
20 40 60 80 100 120 140
Temperature (°C)
-40 -20
0
20 40 60 80 100 120 140
Temperature (°C)
0
2
4
6
8
10
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
10
9
8
7
6
5
4
3
2
1
0
80
70
60
50
40
30
20
10
0
Flag High (OK)
Typical 2.5V Device
V
= 2.5V
OUT
Typical 1.8V Device
V
= 1.8V
OUT
I
= 5A
LOAD
Flag Low (Fault)
V
= V
+ 1V
OUT
V
= V
= 1V
OUT
IN
IN
-40 -20
0
20 40 60 80 100 120 140
Temperature (°C)
-40 -20
0
20 40 60 80 100 120 140
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
Power Management
GM66500 SERIES
A A
MICROELECTRONICS
5A ULTRA LOW - DROPOUT REGULATOR
APPLICATION INFORMATION
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
The GM66500 series is
a high-performance low-
dropout voltage regulator, suitable for moderate to
high-current voltage regulator applications. Its 400mV
dropout voltage at full load makes it especially valuable
in battery-powered systems and as a high-efficiency
noise filter in post-regulator applications.
P
= (V - V )I
IN
+ V
I
D
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 GM66500 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.
Output Capacitor
GM66500 - X.X
V
V
IN
OUT
The GM66500 series requires an output capacitor to
maintain stability and improve transient response.
Proper capacitor selection is important to ensure
proper operation. The GM66500 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
V
V
OUT
IN
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.
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
Aluminum electrolytics can also be used, as long as
Output Current (I
)
OUT
the ESR of the capacitor is 1W .
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
Power Management
GM66500 SERIES
A A
MICROELECTRONICS
5A ULTRA LOW - DROPOUT REGULATOR
Input Capacitor
Error Flag
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 surface mount 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.
The GM66500 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.
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.
Transient Response and 3.3V to 2.5V and 2.5V to
1.8V Conversions
The GM66500 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.
Enable Input
The GM66500 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.
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 GM66500 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 GM66500 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.
7
Power Management
GM66500 SERIES
A A
MICROELECTRONICS
5A ULTRA LOW - DROPOUT REGULATOR
TO-220 PACKAGE OUTLINE DIMENSIONS
4.50 ± 0.20
9.90 ± 0.20
8.0
3.60 ± 0.20
7.0
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
8.0 ± 0.20
4.50 ± 0.20
9.90 ± 0.20
3.60 ± 0.20
7.0
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
Power Management
GM66500 SERIES
A A
MICROELECTRONICS
5A ULTRA LOW - DROPOUT REGULATOR
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
3°
R0.30
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
0.90 ± 0.10
R0.30
0.50
-0.05
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
9
4.90
Unit: mm
Power Management
GM66500 SERIES
A A
MICROELECTRONICS
5A ULTRA LOW - DROPOUT REGULATOR
ORDERING NUMBER
GM 66500/ 66501 1.8 TA3 T
Gamma Micro.
Shipping
Circuit Type
R: Tape & Reel
T: Tube
Package
Output Voltage
1.8: 1.8V
TA3: TO-263
TB3: TO-220
2.5: 2.5V
3.3: 3.3V
5.0: 5.0V
10
Power Management
GM66500 SERIES
A A
MICROELECTRONICS
5A ULTRA LOW - DROPOUT REGULATOR
11
相关型号：
©2020 ICPDF网 联系我们和版权申明