GM66053.3TB3T [ETC]
5.0A PRECISION LINEAR REGULATORS; 5.0A精密线性稳压器
| 型号： | GM66053.3TB3T |
| 厂家： | 
ETC |
| 描述： | 5.0A PRECISION LINEAR REGULATORS |
| 文件： | 总9页 (文件大小：184K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
GM6605
5.0A PRECISION LINEAR REGULATORS
Power Management
Features
Description
Adjustable or Fixed Output
Output Current of 5.0A
The GM6605 series of positive adjustable and fixed regula-
tors are designed to provide 5A output with low dropout
voltage performance. On-chip trimming adjusts the refer-
ence voltage with an accuracy of ±1% for adjustable, and
±2% for fixed voltage versions. Put them to work in post
regulators or microprocessor power supplies where low
voltage operation and fast transient response are required.
Device includes over-current protection and thermal shut-
down protection as well.
Dropout Voltage (typical) 1.2V @ 5.0A
Typical Line Regulation 0.04%
Typical Load Regulation 0.08%
Fast Transient Response
Current Limit Protection
Thermal Shutdown Protection
The GM6605’s are available in TO-220 and surface-
mount TO-263 packages.
Application
Medical Equipment
Printer Supplies
Motherboards
Microprocessor Supply
Post Regulators for Switching Supplies
Telecommunication Systems
TYPICAL APPLICATION CIRCUITS
V
V
OUT
IN
V
IN
V
OUT
GM6605-3.3
GM6605-Adj
3.3V@3.0A
3.3V@3.0A
5.0V
5.0V
124W
1.0%
GND
ADJ
22µF
5.0V
10µF
5.0V
0.1µF
5.0V
22µF
5.0V
10µF
5.0V
200W
1.0%
(Fixed Version)
(Adjustable Version)
www.gammamicro.com
1
PRELIMINARY
GM6605
MARKING INFORMATION & PIN CONFIGURATIONS (Top View)
2
TO-252 (DPAK)
TO-220
TO-263-2 (D PAK)
GM6605
VVAYWW
GM6605
VVAYWW
GM6605
VVAYWW
V
IN
V
OUT
V
IN
GND*
V
OUT
V
IN
GND*
V
OUT
GND*
V V = Output Voltage (50 = 5.0V, A =Ad )
j
On fixed versions Pin 1 = GND,
A
= Assembly Location
= Year
on adjustable versions Pin 1 = ADJ
Y
Tab = V
OUT
W W = Work Week
ORDERING INFORMATION
Ordering Number
Output Voltage
Package
Shipping
Adj
Adj
Adj
1.8
1.8
1.8
2.5
2.5
2.5
3.3
3.3
3.3
3.3
3.3
5.0
5.0
5.0
GM6605-ATA3T
TO-263-2
TO-263-2
TO-220
50 Units / Tube
800 Units / Tape & Reel
GM6605-ATA3R
GM6605-ATB3T
GM6605-1.8TA3T
GM6605-1.8TA3R
GM6605-1.8TB3T
GM6605-2.5TA3T
GM6605-2.5TA3R
GM6605-2.5TB3T
GM6605-3.3TA3T
GM6605-3.3TA3R
GM6605-3.3TB3T
GM6605-3.3TC3T
GM6605-3.3TC3R
GM6605-5.0TA3T
GM6605-5.0TA3R
GM6605-5.0TB3T
50 Units / Tube
50 Units / Tube
TO-263-2
TO-263-2
TO-220
800 Units / Tape & Reel
50 Units / Tube
50 Units / Tube
TO-263-2
TO-263-2
TO-220
800 Units / Tape & Reel
50 Units / Tube
50 Units / Tube
TO-263-2
TO-263-2
TO-220
800 Units / Tape & Reel
50 Units / Tube
80 Units / Tube
2,500 Units / Tape & Reel
50 Units / Tube
TO-252
TO-252
TO-263-2
TO-263-2
TO-220
800 Units / Tape & Reel
50 Units / Tube
* For detail Ordering Number identification, please see last page.
2
GM6605
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
VALUE
UNIT
Power Dissipation
P
D
Internally limited
W
Input Voltage
V
IN
7.0
V
Junction Temperature
T
J
+150
°C
°C
°C
°C
KV
Lead Temperature(Soldering, 10sec)
T
300
LEAD
T
J
0 to + 125
Operating Junction Temperature Range
Storage Temperature Range
T
STG
-65 to + 150
ESD Damage Threshold
ESD
2.0
BLOCK DIAGRAM
(Fixed Version)
V
OUT
V
IN
Output
Current
Limit
Thermal
Error
Shutdown
Amplifier
-
+
Bandgap
Reference
GND
(Adjustable Version)
V
OUT
V
IN
Output
Current
Limit
Thermal
Error
Shutdown
Amplifier
-
+
Bandgap
ADJ
Reference
3
GM6605
ELECTRICAL CHARACTERISTICS
(Typicals and limits appearing in normal type apply for T = 25°C)
J
Symbol
Typ
Parameter
Condition
Min
Max Unit
I
=10mA, V -V
=1.5V
1.238 1.250 1.262
1.230 1.250 1.270
1.782 1.800 1.818
1.764 1.800 1.836
2.475 2.500 2.525
2.460 2.500 2.540
3.267 3.300 3.333
3.247 3.300 3.353
4.950 5.000 5.050
4.920 5.000 5.080
OUT
IN OUT
V
REF
Reference Voltage
GM6605-Adj
GM6605-1.8
GM6605-2.5
GM6605-3.3
GM6605-5.0
V
V
V
V
V
10mA
I
5A, 3.3V
V
IN
7V
OUT
I
=10mA, V =3.3V
IN
OUT
10mA
I
5A, 3.3V
V
IN
7V
OUT
I
=10mA, V =4V
IN
OUT
10mA
I
5A, 4V
V
7V
OUT
IN
V
Output Voltage
Line Regulation
Load Regulation
O
I
=10mA, V =4.8V
IN
OUT
10mA
I
5A, 4.8V
V
IN
7V
OUT
I
=10mA, V =6.5V
IN
OUT
10mA
I
5A, 6.5V
V
IN
7V
OUT
I =10mA,
OUT
0.04
0.04
0.04
0.04
0.04
0.08
0.08
0.08
0.08
0.08
1.15
6.8
0.20
0.20
0.20
0.20
0.20
0.40
0.40
0.40
0.40
0.40
1.3
GM6605-Adj
GM6605-1.8
GM6605-2.5
GM6605-3.3
GM6605-5.0
I
=10mA, 3.3V
V
IN
7V
OUT
REG
%
I
I
=10mA, 4V
OUT
V
IN
7V
7V
LINE
=10mA, 4.8V
V
IN
OUT
I
=10mA, 6.5V
V
IN
7V
OUT
V
V
V
V
V
I
-V
IN OUT
=1.5V, 10mA
I
O
5A
GM6605-Adj
GM6605-1.8
GM6605-2.5
GM6605-3.3
GM6605-5.0
=3.8V, 10mA
=4.5V, 10mA
=5.3V, 10mA
=7V, 10mA
=5A
I
I
I
5A
5A
5A
IN
IN
IN
IN
O
O
O
REG
%
LOAD
I
5A
O
V
Dropout Voltage
Current Limit
V
A
D
OUT
I
V -V
IN OUT
=3V
5.5
CL
I
V =5V
IN
Minimum Load Current
GM6605-Adj
5
10
10
mA
O MIN
V
V
V
V
I
=3.3V, 10mA
=4.0V, 10mA
=4.8V, 10mA
=6.5V, 10mA
I
I
I
I
5A
5A
5A
5A
V
5
IN
IN
IN
IN
O
O
O
O
GM6605-1.8
GM6605-2.5
GM6605-3.3
GM6605-5.0
GM6605-Adj
5
10
I
Q
Quiescent Current
mA
5
10
5
10
I
=10mA, 2.75V
7V
Adjust Pin Current
Temperature Coefficient
Thermal Regulation
Ripple Rejection
50
120
µA
%/°C
%/W
dB
ADJ
OUT
IN
V -V
IN OUT
=1.5V, I
=10mA
OUT
0.005
0.003
80
T
T =25°C, 30ms pulse
A
C
R
V -V
IN OUT
=1.5V, I
=5A
OUT
60
A
4
GM6605
APPLICATION INFORMATION
Protection Diodes
The GM6605 series linear regulators provide fixed and
adjustable output voltages at currents up to 5.0A.
These regulators are protected against overcurrent con-
ditions and include thermal shutdown protection. The
GM6605's have a composite PNP-NPN output transis-
tor and require an output capacitor for stability.
When large external capacitors are used with most
linear regulator it is wise to add protection diodes. If
the input voltage of the regulator is shorted, the out-
put capacitor will discharge into the output of the reg-
ulator. The discharge current depends on the value
of capacitor, output voltage and rate at which V
A detailed procedure for selecting this capacitor fol-
lows.
IN
drops.
(a),(b)
Figure 1
Protection Diode Scheme for
Large Output Capacitors
Stability Considerations
(a) Fixed Version
The output compensation capacitor helps to determine
three main characteristics of a linear regulator's perfor-
mance: start-up delay, load transient response, and
loop stability. The capacitor value and type is based on
cost, availability, size and temperature constraints. A
tantalum or aluminum electrolytic capacitor is pre-
ferred, as a film or ceramic capacitor with almost zero
ESR can cause instability. An aluminum electrolytic ca-
pacitor is the least expensive type, but when the circuit
operates at low temperatures, both the value and ESR
of the capacitor will vary widely. For optimum perfor-
mance over the full operating temperature range, a tan-
talum capacitor is best. A 22µF tantalum capacitor will
work fine in most applications, but with high current reg-
ulators such as the GM6605 higher capacitance values
will improve the transient response and stability. Most
applications for the GM6605's involve large changes in
load current, so the output capacitor must supply in-
stantaneous load current. The ESR of the output ca-
pacitor causes an immediate drop in output voltage
given by:
IN4002
V
IN
V
IN
V
OUT
V
OUT
GM6605-3.3
GND
C2
C1
(b) Adjustable Version
IN4002
V
V
IN
IN
V
V
OUT
OUT
GM6605-Adj
C2
ADJ
R1
C1
C
ADJ
R2
DV = DI x ESD
In the GM6605 linear regulators, the discharge path
is through a large junction, and protection diodes are
normally not needed. However, if the regulator is
used with large output capacitance values and the in-
put voltage is instantaneously shorted to ground,
damage can occur. In this case, a diode connected
as shown above in Figure 1.
In microprocessor applications an output capacitor net-
work of several tantalum and ceramic capacitors in par-
allel is commonly used. This reduces overall ESR and
minimizes the instantaneous output voltage drop under
transient load conditions. The output capacitor network
should be placed as close to the load as possible for
the best results.
5
GM6605
The thermal characteristics of an IC depend four fac-
tors:
Output Voltage Sensing
1. Maximum Ambient Temperature T (°C)
A
The GM6605 series are three terminal regulators, so
they cannot provide true remote load sensing. Load
regulation is limited by the resistance of the conductors
connecting the regulator to the load. For best results
the GM6605 should be connected as shown in Figure
2. Power Dissipation P (Watts)
D
3. Maximum Junction Temperature T (°C)
J
4. Thermal Resistance Junction to ambient R
JA
Q
(°C/W)
These relationship of these four factors is expressed
by equation (1):
2.
Conductor
Parasitic
R
V
IN
V
IN
V
OUT
C
Resistance
T = T + P X R
J A D
........(1)
QJA
GM6605-3.3
Maximum ambient temperature and power dissipa-
tion are determined by the design while the maximum
junction temperature and thermal resistance depend
on the manufacturer and the package type.
R
LOAD
GND
(a) Fixed Version
The maximum power dissipation for a regulator is ex-
pressed by equation (2):
Conductor
Parasitic
V
IN
R
V
OUT
V
C
IN
Resistance
P
D(max)
= { V - V } I
IN(max) OUT(min) OUT(max)
+ V
I ........(2)
IN(max) Q
GM6605-A
R1
A
DJ
R
where:
LOAD
V
is the maximum input voltage,
IN(max)
R2
V
is the minimum output voltage,
OUT(min)
(b) Adjustable Version
I
is the maximum output current
OUT(max)
I is the maximum quiescent current at I
Q
.
OUT(max)
(a),(b)
Figure 2
Conductor Parasitic Resistance Effects are
A heat sink effectively increases the surface area of
the package to improve the flow of heat away from
the IC into the air. Each material in the heat flow path
between the IC and the environment has a thermal re-
sistance. Like series electrical resistances, these re-
Minimized by this Grounding Scheme For Fixed
and Adjustable Output Regulators
Calculating Power Dissipation and Heat
Sink Requirements
sistance are summed to determine R , the total
Q
JA
thermal resistance between the junction and the air.
This is expressed by equation (3):
The GM6605 series precision linear regulators include
thermal shutdown and current limit circuitry to protect
the devices. However, high power regulators normally
operate at high junction temperatures so it is important
to calculate the power dissipation and junction temper-
atures accurately to be sure that you use and adequate
R
= R + R + R
QJC QCS
........(3)
QJA
QSA
Where all of the following are in °C/W:
R
R
R
is thermal resistance of junction to case,
is thermal resistance of case to heat sink,
is thermal resistance of heat sink to ambient air
Q
Q
Q
JC
CS
SA
The value for R
is calculated using equation (3)
heat sink. The case is connected to V
on the
Q
OUT
JA
and the result can be substituted in equation (1). The
value for R is 3.5°C/W for a given package type
Q
JC
GM6605, so electrical isolation may be required for
some applications. Thermal compound should always
be used with high current regulators like the GM6605.
based on an average die size. For a high current reg-
ulator such as the GM6605 the majority of the heat is
generated in the power transistor section.
6
GM6605
Typical Performance Characteristics
+0.3
+0.2
+0.1
0
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
0.75
T
= 0°C
CASE
T
= 25°C
CASE
-0.1
-0.2
-0.3
T
= 125°C
CASE
0
0.30 0.60 0.90 1.20 1.50 1.80 2.10 2.40 2.70 300
0
30
60
90
120
Qutput Current(A)
T °C
J
Figure 4. Bandgap Reference Voltage Deviation
vs. Temperature
Figure 3. Dropout Voltage vs. Output Current
90
80
70
60
50
40
30
20
10
0.65
0.60
0.55
0.50
0.45
0.40
T
= 0°C
CASE
T
= 25°C
CASE
T
= 125°C
CASE
1
2
3
4
5
6
1
2
3
4
5
6
7
8
10
10
10
10
10
10
V
IN
- V
OUT(V)
Frequency(Hz)
Figure 5. Ripple Rejection vs. Frequency
Figure 6. Minimum Load Current vs.
- V
V
IN
OUT(V)
7
GM6605
TO-252 PACKAGE OUTLINE DIMENSIONS
6.50 ± 0.05
5.340 ± 0.05
29° ± 0.5°
2.30 ± 0.05
0.508 ± 0.0127
REF 0.6
Pad Layout
7°
1.0 ± 0.05
0.244
6.20
6.10 ± 0.05
0.070 ± 0.05
0.118
3.0
7.20 ± 0.05
9.900
7°
0.75 ± 0.10
2.70 ± 0.10
1.525 ± 0.10
7°
0.75 ± 0.10
0.89 ± 0.05
0.81 ± 0.038
0.243
6.172
0.228
5.80
G
R 0.25 ± 0.13
0.063
0.101
2.58
1.6
Inches
mm
(
)
Unit: mm
R0.15 max
2°
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
2.40 ± 0.20
3°
1.4 ± 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)
P
0.40
7.0
4.0
Inches
(
)
mm
0.90
3°
3°
R 0.3
R 0.45
7.2
9.20 ± 0.20
10.00 ± 0.20
8
4.90 ± 0.20
Unit: mm
GM6605
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
P
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
ORDERING NUMBER
GM 6605 1.8 TB3 T
Gamma Micro.
Shipping
T: Tube
R: Tape & Reel
Circuit Type
Package
TA3: TO-263-2
TB3: TO-220
TC3: TO-252
Output Voltage
A: Adj, 1.5: 1.5V
1.8: 1.8V, 2.5: 2.5V
3.3: 3.3V, 5.0: 5.0V
9
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