GM6605-1.8TC3RG [GAMMA]
5.0A LOW DROPOUT PRECISION REGULATOR; 5.0A低压差稳压精度
| 型号： | GM6605-1.8TC3RG |
| 厂家： | 
GAMMA MICROELECTRONICS INC. |
| 描述： | 5.0A LOW DROPOUT PRECISION REGULATOR |
| 文件： | 总11页 (文件大小：192K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
GM6605
5.0A LOW DROPOUT
PRECISION REGULATOR
Description
Features
GM6605 series of positive adjustable and fixed
regulators is designed to provide 5A output current
with low dropout voltage performance. On-chip
trimming adjusts the reference voltage with an
accuracy of ±1% for adjustable, and ±2% for fixed
output voltage versions. Besides the features
mentioned, GM6605 works well in post regulators
or micro-processor power supplies where low
voltage operation and fast transient response are
required. GM6605 includes over current protection
and thermal shutdown protection as well.
Adjustable or Fixed Output
Output Current of 5A
Low Dropout, 1.5V max at 5A Output
Current
0.04% Line Regulation
0.2 % Load Regulation
100% Thermal Limit Burn-In
Fast Transient Response
GM6605 is available in TO-220 and surface-mount TO-
263 packages.
Applications
Microprocessor Supply
Post Regulators for Switching Supplies
Telecommunication Systems
Medical Equipment
Printer Supplies
Motherboards
Typical Application Circuit
VOUT
5.0A
VIN
VIN
VOUT
5.0A
GM6605-adj
GM6605-x.x
CIN
COUT
VREF
R1
R2
CIN
COUT
Fixed Output Voltage Version
Adjustable Output Voltage Version
R2
VOUT = VREF X ( 1 +
) + IADJ X R2
R1
1
GM6605
5.0A LOW DROPOUT
PRECISION REGULATOR
Marking Information and Pin Configurations (Top View)
TO 252
(D-PAK)
TO 263
TO 220
(D2-PAK)
GM6605
GM6605
VVAYWW
VVAYWW
GM6605
VVAYWW
GM6605G
VVAYWW
GM6605G
VVAYWW
GM6605G
VVAYWW
G: Green Product
VV: Output Voltage Codes (05: 5.0V, …A: ADJ)
A: Assembly/Test Site Code
Y: Year
WW: Week
2
GM6605
5.0A LOW DROPOUT
PRECISION REGULATOR
Ordering Information
Ordering Number
VOUT
Package
TO-263
TO-263
TO-220
TO-252
TO-252
TO-263
TO-263
TO-220
TO-252
TO-252
TO-263
TO-263
TO-220
TO-252
TO-252
TO-263
TO-263
TO-220
TO-252
TO-252
TO-263
TO-263
TO-220
TO-252
TO-252
Shipping
50 Units/Tube
800 Units / Reel
50 Units/Tube
80 Units/Tube
2,500 Units / Reel
50 Units/Tube
800 Units / Reel
50 Units/Tube
80 Units/Tube
2,500 Units / Reel
50 Units/Tube
800 Units / Reel
50 Units/Tube
80 Units/Tube
2,500 Units / Reel
50 Units/Tube
800 Units / Reel
50 Units/Tube
80 Units/Tube
2,500 Units / Reel
50 Units/Tube
800 Units / Reel
50 Units/Tube
80 Units/Tube
2,500 Units / Reel
GM6605-ATA3T
GM6605-ATA3R
GM6605-ATB3T
GM6605-ATC3T
GM6605-ATC3R
GM6605-1.8TA3T
GM6605-1.8TA3R
GM6605-1.8TB3T
GM6605-1.8TC3T
GM6605-1.8TC3R
GM6605-2.5TA3T
GM6605-2.5TA3R
GM6605-2.5TB3T
GM6605-2.5TC3T
GM6605-2.5TC3R
GM6605-3.3TA3T
GM6605-3.3TA3R
GM6605-3.3TB3T
GM6605-3.3TC3T
GM6605-3.3TC3R
GM6605-5.0TA3T
GM6605-5.0TA3R
GM6605-5.0TB3T
GM6605-5.0TC3T
GM6605-5.0TC3R
Adj
1.8V
2.5V
3.3V
5.0V
3
GM6605
5.0A LOW DROPOUT
PRECISION REGULATOR
Ordering Information – Green Products
Ordering Number
GM6605-ATA3TG
GM6605-ATA3RG
GM6605-ATB3TG
GM6605-ATC3TG
GM6605-ATC3RG
GM6605-1.8TA3TG
GM6605-1.8TA3RG
GM6605-1.8TB3TG
GM6605-1.8TC3TG
GM6605-1.8TC3RG
GM6605-2.5TA3TG
GM6605-2.5TA3RG
GM6605-2.5TB3TG
GM6605-2.5TC3TG
GM6605-2.5TC3RG
GM6605-3.3TA3TG
GM6605-3.3TA3RG
GM6605-3.3TB3TG
GM6605-3.3TC3TG
GM6605-3.3TC3RG
GM6605-5.0TA3TG
GM6605-5.0TA3RG
GM6605-5.0TB3TG
GM6605-5.0TC3TG
GM6605-5.0TC3RG
VOUT
Package
TO-263
TO-263
TO-220
TO-252
TO-252
TO-263
TO-263
TO-220
TO-252
TO-252
TO-263
TO-263
TO-220
TO-252
TO-252
TO-263
TO-263
TO-220
TO-252
TO-252
TO-263
TO-263
TO-220
TO-252
TO-252
Shipping
50 Units/Tube
800 Units / Reel
50 Units/Tube
80 Units/Tube
2,500 Units / Reel
50 Units/Tube
800 Units / Reel
50 Units/Tube
80 Units/Tube
2,500 Units / Reel
50 Units/Tube
800 Units / Reel
50 Units/Tube
80 Units/Tube
2,500 Units / Reel
50 Units/Tube
800 Units / Reel
50 Units/Tube
80 Units/Tube
2,500 Units / Reel
50 Units/Tube
800 Units / Reel
50 Units/Tube
80 Units/Tube
2,500 Units / Reel
Adj
1.8V
2.5V
3.3V
5.0V
4
GM6605
5.0A LOW DROPOUT
PRECISION REGULATOR
Absolute Maximum Ratings
PARAMETER
SYMBOL
RATINGS
UNITS
Input Voltage
VI
15
V
Internally
Power Dissipation
PD
W
Limited
Operating Junction Temperature
TJ
- 40 to 125
- 60 to 150
260
°C
°C
°C
Storage Temperature
Tstg
Lead Temperature 1.6mm (1/6 inch) from case for 10 seconds
Block Diagram
VIN
Thermal
Limit
VOUT
For
fixed
ADJ
output
Options
GND
5
GM6605
5.0A LOW DROPOUT
PRECISION REGULATOR
Electrical Characteristics (TI = 25°C, Inless otherwise noted)
Parameter
Symbol
Test Condition
IOUT = 10mA, VIN – VOUT = 1.5V
10mA ≤ IOUT ≤ 5A, 3.3V ≤VIN ≤7V
IOUT = 10mA, VIN = 3.3V
Min
Typ
Max
Unit
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
Reference
GM6605-A
VREF
V
Voltage
GM6605-1.8
GM6605-2.5
GM6605-3.3
GM6605-5.0
10mA ≤ IOUT ≤ 5A, 3.3V ≤VIN ≤7V
IOUT = 10mA, VIN = 4V
10mA ≤ IOUT ≤ 5A, 4V ≤VIN ≤7V
IOUT = 10mA, VIN = 4.8V
Output
VO
V
Voltage
10mA ≤ IOUT ≤ 5A, 4.8V ≤VIN ≤7V
IOUT = 10mA, VIN = 6.5V
10mA ≤ IOUT ≤ 5A, 6.5V ≤VIN ≤7V
IOUT = 10mA, 3.3V ≤VIN ≤7V
IOUT = 10mA, 3.3V ≤VIN ≤7V
IOUT = 10mA, 4V ≤VIN ≤7V
GM6605-A
GM6605-1.8
GM6605-2.5
GM6605-3.3
GM6605-5.0
GM6605-A
Line
0.04
0.08
0.20
0.40
%
%
∆VOI
Regulation
IOUT = 10mA, 4.8V ≤VIN ≤7V
IOUT = 10mA, 6.5V ≤VIN ≤7V
VIN –VOUT =1.5V,10mA ≤ IOUT ≤ 5A
VIN = 3.3V, 10mA ≤ IOUT ≤ 5A
VIN = 4.0V, 10mA ≤ IOUT ≤ 5A
VIN = 4,8V, 10mA ≤ IOUT ≤ 5A
GM6605-1.8
GM6605-2.5
GM6605-3.3
GM6605-5.0
Load
∆VOL
Regulation
VIN = 6.5V, 10mA ≤ IOUT ≤ 5A
IOUT = 5A
Dropout Voltage
Current Limit
VD
ICL
1.3
6.8
5
1.5
10
V
A
VIN –VOUT =3V
5.5
Minimum Load Current
GM6605-1.8
IO(MIN)
VIN = 5.0V
mA
VIN = 3.3V, 10mA ≤ IOUT ≤ 5A
GM6605-2.5
GM6605-3.3
GM6605-5.0
VIN = 4.0V, 10mA ≤ IOUT ≤ 5A
VIN = 4,8V, 10mA ≤ IOUT ≤ 5A
VIN = 6.5V, 10mA ≤ IOUT ≤ 5A
Quiescent
Current
IQ
5
10
mA
Adjust Pin
Current
GM6605-A
IADJ
IOUT = 10mA, 2.75V ≤VIN ≤7V
50
120
µA
Temperature Coefficient
Ripple Rejection
IOUT = 10mA, VIN – VOUT = 1.5V
IOUT = 5A, VIN – VOUT = 1.5V
0.005
80
%/°C
dB
RA
60
6
GM6605
5.0A LOW DROPOUT
PRECISION REGULATOR
Application Information
GM6605 series linear regulators provide fixed and adjustable output voltages at currents up to 5.0A.
These regulators are protected against over-current conditions and include thermal shutdown protection.
The GM6605hasa compositePNP-NPN outputtransistor and require an output capacitor for stability.
A detailed procedure for selecting this capacitor is as below:
Stability Considerations
The output compensation capacitor helps to determine three main characteristics of a linear regulator's
performance: 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 preferred, as a film or ceramic capacitor with almost zero ESR can cause instability. An
aluminum electrolytic capacitor 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 performance over
the full operating temperature range, a tantalum capacitor is the best. A 22µF tantalum capacitor will
work fine in most applications. But with high current regulators, such as GM6605 higher capacitance
values will improve the transient response and stability. Most applications for Gm6605 involve large
changes in load current, so the output capacitor must supply instantaneous load current. The ESR of
the output capacitor causes an immediate drop in output voltage given by:
V = I x ESR
In microprocessor applications an output capacitor network of several tantalum and ceramic capacitors
in parallel 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.
Protection Diodes
When large external capacitors are used with most linear regulators, it is wise to add protection diodes. If
the input voltage of the regulator is shorted, the output capacitor will discharge into the output of the
regulator. The discharge current depends on the value of capacitor, output voltage, and rate at which VIN
drops.
1N4002
1N4002
VIN
VOUT
C2
VOUT
VIN
GM6605-Ad
j
GM6605-3.3
C2
C1
R1
R2
C1
A
DJ
GND
CADJ
(a) Fixed version
(b) Adjustable version
Figure 1. Protection Diode Scheme
for large Output Capacitors
For GM6605, the discharge path is throughalargejunction, andprotectiondiodesare normally not needed.
However, if the regulator is used with large output capacitance values and the input voltage is
instantaneously shorted to ground, damage can occur. In this case, a diode connected as shown above
in Figure 1 is recommended.
7
GM6605
5.0A LOW DROPOUT
PRECISION REGULATOR
Output Voltage Sensing
GM6605 series is a three-terminal regulator, so it 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, GM6605 should be connected as shown 1n F1gure 2.
Conductor
Conductor
Parasitic
Parasitic
VIN
Resistance
VOUT
RC
RC
R1
R2
VOUT
VIN
GM6605-A
GM6605-3.3
ADJ
RLOAD
RLOAD
GND
(a) Fixed version
(b) Adjustable version
Figure 2. Conductor parasitic resistance effects are minimized by
this grounding scheme.
Calculating Power Dissipation and Heat Sink Requirements
GM6605 series 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 temperatures accurately to be sure to use an adequate heat sink. The case is
connected to VOUT on GM6605, so electrical isolation may be required for some applicat1ons. Thermal
compound should always be used with high current regulators like GM6605.
The thermal characteristics of an IC depend on four factors:
1.
2.
3.
4.
Maximum Ambient Temperature TA (°C)
Power Dissipation PD (Watts)
Maximum Junction Temperature TJ (°C)
Thermal Resistance Junction to amb1ent θ
JA
The relationship of these four factors is expressed by equation (1):
TJ = TA + PD x θ
JA
Maximum ambient temperature and power dissipation are determ1ned by the design while the maximum
junction temperature and thermal resistance depend on the manufacturer and the package type.
The maximum power dissipation for a regulator is expressed by equation (2):
PD(MAX) = (VIN(MAX) – VOUT(MIN) ) x IOUT(MIN) + VIN(MIN) x IQ
where:
V
IN(MAX) is the maximum input voltage,
VOUT(MIN) is the minimum output voltage,
I
OUT(MAX) is the maximum output current
IQ is the max1mum quiescent current at IOUT(MAX)
.
A heat sink effect1vely 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 resistance. Like series electrical resistances, these resistance are summed to determine θ ,
JA
the total thermal resistance between the junction and the air. This is expressed by equation (3):
θ
JA = θJC + θCS + θ
SA
where:
θJC is the thermal resistance of Junction to Case,
θCS is the thermal resistance of Case to Heat Sink,
θSA is the thermal resistance of Heat Sink to Ambient air.
The value for θ is calculated using equation (3) and the result can be substituted in equation (1). The
value for θ isJA3.5°C/W for a given package typed based on an average d1ie size. For a high current
CS
regulator such as GM6605, the majority of the heat is generated in the power transistor sect1on.
8
GM6605
5.0A LOW DROPOUT
PRECISION REGULATOR
Typical Performance Characteristics
1.12
1.15
+0.3
+0.2
+0.1
0
TCASE = 0°C
1.10
1.05
1.00
0.95
TCASE = 25°C
0.90
-0.1
T
CASE = 125°C
0.85
0.80
0.75
-0.2
-0.3
0
0.30 0.60 0.90 1.20 1.50 1.80 2.10 2.40 2.70 3.00
Output Current(A)
0
30
60
90
120
TJ (°C)
Figure 1. Dropout Voltage vs. Output Current
Figure 2. Bandgap Reference Voltage Deviation
Vs. Temperature
90
80
0.65
0.60
0.55
0.50
0.45
0.40
TCASE = 0°C
70
60
50
T
CASE = 25°C
TCASE = 125°C
40
30
20
10
101
102
103
Frequency (Hz)
Figure 3. Ripple Rejection vs. Frequency
104
105
106
1
2
3
4
5
6
7
8
VIN - VOUT (V)
Figure 4. Minimum Load Current vs. VIN - VOUT
9
GM6605
5.0A LOW DROPOUT
PRECISION REGULATOR
Package Outline Dimensions – TO263
0.390 - 0.415
(9.906 - 10.541)
0.105 - 0.180
(4.191 - 4.572)
0.045 - 0.055
(1.143 - 1.397)
0.060
(1.524)
TYP
15
TYP
0.330 - 0.370
(8.382 - 9.398)
0.059
(1.499)
TYP
0.143 + 0.012
0.143 - 0.002
(3.632 + 0305)
(3.362 - 0.508)
0.050 +/- 0.012
(1.270 +/- 0.305)
0.020 - 0.039
(0.510 - 0.990)
0.013 - 0.023
(0.330 - 0.584)
0.090 - 0.110
(2.286 - 2.794)
0.050
(1.270)
Package Outline Dimensions – TO252
0.039 – 0.050
(1.020 – 1.270)
0.205 – 0.215
(5.210 – 5.460)
0.018 – 0.023
(0.460 – 0.580)
0.055 – 0.080
(1.400 – 2.030)
SEATING PLAN
0.370 – 0.410
(9.400 – 10.420)
0.210 – 0.228
(5.330 – 5.800)
0.020
(0.510)
MIN
0.045 – 0.060
0.090
(1.150 – 1.520)
(2.285)
0.018 – 0.023
TYP
0.030 – 0.045
(0.760 – 1.140)
(0.460 – 0.580)
0.180
(4.570)
TYP
10
GM6605
5.0A LOW DROPOUT
PRECISION REGULATOR
Ordering Number
G
M 6605 - 1.8 TA3
T
G
APM Circuit
Output
Package
Type
Shipping
Type
Gamma Type
Micro
Voltages
A: ADJ
TA3: TO263
TB3: TO220
TC3: TO252
Blank:
T: Tube
1.8: 1.8V
2.5: 2.5V
3.3: 3.3V
5.0: 5.0V
Pb-free
G:Green
R: Tape & Reel
Note:
Pb-free products:
♦
RoHS compliant and compatible with the current require-ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes with 100% matte tin (Sn) plating.
♦
Green products:
♦
Lead-free (RoHS compliant)
♦
Halogen free(Br or Cl does not exceed 900ppm by weight in homogeneous material and total of
Br and Cl does not exceed 1500ppm by weight)
11
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