Gamma GM66015 1.5a low dropout precision regulator Datasheet

GM66015
1.5A LOW DROPOUT
PRECISION REGULATOR
Description
Features
GM66015 series of positive adjustable and fixed
regulators is designed to provide 1.5A output
current with low dropout voltage performance. Onchip trimming adjusts the reference voltage with an
accuracy of ±1% for adjustable, and ±2% for fixed
output voltage versions. Besides the features
mentioned, GM66015 works well in post regulators
or micro-processor power supplies where low
voltage operation and fast transient response are
required. GM66015 includes over current protection
and thermal shutdown protection as well.
GM66015 is available in TO-220, surface-mount TO-263,
surface-mount TO252 and SOT223 packages.
„
Adjustable or Fixed Output
„
Output Current of 1.5A
„
Low Dropout, 1.5V max at 1.5A Output
Current
„
0.04% Line Regulation
„
0.2 % Load Regulation
„
100% Thermal Limit Burn-In
„
Fast Transient Response
„
Pin to Pin Compatible with LT1086
series
Applications
„
Post Regulators for Switching Supplies
„
High Efficiency Linear Regulators
„
Motherboards
Typical Application Circuit
VOUT
GM66015-x.x
COUT
VOUT
GM66015-adj
1.5A
GND
CIN
VIN
1.5A
ADJ
CIN
R1
COUT
R2
Fixed Output Voltage Version
Adjustable Output Voltage Version
GM66015V2.00
VIN
1
GM66015
1.5A LOW DROPOUT
PRECISION REGULATOR
Marking Information and Pin Configurations (Top View) – Pb Free Product
SOT223
GM66015
VVAYWW
TO 252
(D-PAK)
TO 220
GM66015
VVAYWW
TO 263
(D2-PAK)
GM66015
VVAYWW
3. VIN
2. VOUT
3. VIN
2. V
3. V
IN
2 VOUT
1. GND/ADJ
VV: Output Voltage Codes (05: 5.0V, …A: ADJ)
A: Assembly/Test Site Code
Y: Year
WW: Week
OUT
1. GND/ADJ
1.GND/ADJ
3. VIN
2. VOUT
1.GND/ADJ
GM66015
VVAYWW
Marking Information and Pin Configurations (Top View) – Green Product
SOT223
GM66015G
VVAYWW
3. VIN
2. VOUT
GM66015G
VVAYWW
3. VIN
2. VOUT
1. GND/ADJ
3. VIN
2 VOUT
G: Green Product
VV: Output Voltage Codes (05: 5.0V, …A: ADJ)
A: Assembly/Test Site Code
Y: Year
WW: Week
TO 263
(D2-PAK)
GM66015G
VVAYWW
1. GND/ADJ
GM66015V2.00
TO 220
GM66015G
VVAYWW
1.GND/ADJ
3. VIN
2. VOUT
1.GND/ADJ
2
TO 252
(D-PAK)
GM66015
1.5A LOW DROPOUT
PRECISION REGULATOR
Ordering Number
VOUT
Package
Shipping
GM66015-ATA3T
TO-263
50 Units/Tube
GM66015-ATA3R
TO-263
800 Units / Reel
GM66015-ATB3T
TO-220
50 Units/Tube
TO-252
80 Units/Tube
GM66015-ATC3R
TO-252
2,500 Units / Reel
GM66015-AST3T
SOT-223
80 Units/Tube
GM66015-AST3R
SOT-223
2,500 Units / Reel
GM66015-1.8TA3T
TO-263
50 Units/Tube
GM66015-1.8TA3R
TO-263
800 Units / Reel
GM66015-1.8TB3T
TO-220
50 Units/Tube
TO-252
80 Units/Tube
GM66015-1.8TC3R
TO-252
2,500 Units / Reel
GM66015-1.8ST3T
SOT-223
80 Units/Tube
GM66015-1.8ST3R
SOT-223
2,500 Units / Reel
GM66015-2.5TA3T
TO-263
50 Units/Tube
GM66015-2.5TA3R
TO-263
800 Units / Reel
GM66015-2.5TB3T
TO-220
50 Units/Tube
TO-252
80 Units/Tube
GM66015-2.5TC3R
TO-252
2,500 Units / Reel
GM66015-2.5ST3T
SOT-223
80 Units/Tube
GM66015-2.5ST3R
SOT-223
2,500 Units / Reel
GM66015-3.3TA3T
TO-263
50 Units/Tube
GM66015-3.3TA3R
TO-263
800 Units / Reel
GM66015-3.3TB3T
TO-220
50 Units/Tube
TO-252
80 Units/Tube
GM66015-3.3TC3R
TO-252
2,500 Units / Reel
GM66015-3.3ST3T
SOT-223
80 Units/Tube
GM66015-3.3ST3R
SOT-223
2,500 Units / Reel
GM66015-5.0TA3T
TO-263
50 Units/Tube
GM66015-5.0TA3R
TO-263
800 Units / Reel
GM66015-5.0TB3T
TO-220
50 Units/Tube
TO-252
80 Units/Tube
GM66015-5.0TC3R
TO-252
2,500 Units / Reel
GM66015-5.0ST3T
SOT-223
80 Units/Tube
GM66015-5.0ST3R
SOT-223
2,500 Units / Reel
GM66015-ATC3T
GM66015-1.8TC3T
GM66015-2.5TC3T
GM66015-3.3TC3T
GM66015-5.0TC3T
Adj
1.8V
2.5V
3.3V
5.0V
GM66015V2.00
Ordering Information – Pb Free Product
3
GM66015
1.5A LOW DROPOUT
PRECISION REGULATOR
Ordering Information – Green Product
Ordering Number
Package
Shipping
GM66015-ATA3TG
TO-263
50 Units/Tube
GM66015-ATA3RG
TO-263
800 Units / Reel
GM66015-ATB3TG
TO-220
50 Units/Tube
TO-252
80 Units/Tube
GM66015-ATC3RG
TO-252
2,500 Units / Reel
GM66015-AST3TG
SOT-223
80 Units/Tube
GM66015-AST3RG
SOT-223
2,500 Units / Reel
GM66015-1.8TA3TG
TO-263
50 Units/Tube
GM66015-1.8TA3RG
TO-263
800 Units / Reel
GM66015-1.8TB3TG
TO-220
50 Units/Tube
TO-252
80 Units/Tube
GM66015-1.8TC3RG
TO-252
2,500 Units / Reel
GM66015-1.8ST3TG
SOT-223
80 Units/Tube
GM66015-1.8ST3RG
SOT-223
2,500 Units / Reel
GM66015-2.5TA3TG
TO-263
50 Units/Tube
GM66015-2.5TA3RG
TO-263
800 Units / Reel
GM66015-2.5TB3TG
TO-220
50 Units/Tube
TO-252
80 Units/Tube
GM66015-2.5TC3RG
TO-252
2,500 Units / Reel
GM66015-2.5ST3TG
SOT-223
80 Units/Tube
GM66015-2.5ST3RG
SOT-223
2,500 Units / Reel
GM66015-3.3TA3TG
TO-263
50 Units/Tube
GM66015-3.3TA3RG
TO-263
800 Units / Reel
GM66015-3.3TB3TG
TO-220
50 Units/Tube
TO-252
80 Units/Tube
GM66015-3.3TC3RG
TO-252
2,500 Units / Reel
GM66015-3.3ST3TG
SOT-223
80 Units/Tube
GM66015-3.3ST3RG
SOT-223
2,500 Units / Reel
GM66015-5.0TA3TG
TO-263
50 Units/Tube
GM66015-5.0TA3RG
TO-263
800 Units / Reel
GM66015-5.0TB3TG
TO-220
50 Units/Tube
TO-252
80 Units/Tube
GM66015-5.0TC3RG
TO-252
2,500 Units / Reel
GM66015-5.0ST3TG
SOT-223
80 Units/Tube
GM66015-5.0ST3RG
SOT-223
2,500 Units / Reel
GM66015-ATC3TG
GM66015-1.8TC3TG
GM66015-2.5TC3TG
GM66015V2.00
GM66015-3.3TC3TG
4
VOUT
GM66015-5.0TC3TG
Adj
1.8V
2.5V
3.3V
5.0V
GM66015
1.5A LOW DROPOUT
PRECISION REGULATOR
Absolute Maximum Ratings
PARAMETER
SYMBOL
RATINGS
UNITS
Input Voltage
VI
15
V
Power Dissipation
PD
Internally
Limited
W
Operating Junction Temperature
TJ
- 40 to 125
°C
Storage Temperature
Tstg
- 60 to 150
°C
260
°C
Lead Temperature 1.6mm (1/6 inch) from case for 10 seconds
Block Diagram
VIN
VOUT
GND
GM66015V2.00
ADJ
For
fixed
output
Options
5
GM66015
1.5A LOW DROPOUT
PRECISION REGULATOR
GM7805 Electrical Characteristics (TI = 25°C, Inless otherwise noted)
Parameter
Reference
Voltage
GM66015-A
Symbol
VREF
GM66015-1.8
GM66015-2.5
Output
Voltage
VO
GM66015-3.3
GM66015-5.0
Line
Regulation
Load
Regulation
Typ
Max
IOUT = 10mA, VIN – VOUT = 1.5V
1.238
1.250
1.262
10mA ≤ IOUT ≤ 1.5A, 3.3V ≤VIN ≤7V
1.225
1.250
1.275
IOUT = 10mA, VIN = 3.3V
1.782
1.800
1.818
10mA ≤ IOUT ≤ 1.5A, 3.3V ≤VIN ≤7V
1.764
1.800
1.836
IOUT = 10mA, VIN = 4V
2.475
2.500
2.525
10mA ≤ IOUT ≤ 1.5A, 4V ≤VIN ≤7V
2.460
2.500
2.540
IOUT = 10mA, VIN = 4.8V
3.267
3.300
3.333
10mA ≤ IOUT ≤ 1.5A, 4.8V ≤VIN ≤7V
3.247
3.300
3.353
IOUT = 10mA, VIN = 6.5V
4.950
5.000
5.050
10mA ≤ IOUT ≤ 1.5A, 6.5V ≤VIN ≤7V
4.920
5.000
5.080
0.04
0.20
%
0.08
0.40
%
1.15
1.3
V
IOUT = 10mA
GM66015-1.8
IOUT = 10mA, 3.3V ≤VIN ≤7V
GM66015-2.5
ΔVOI
IOUT = 10mA, 4V ≤VIN ≤7V
GM66015-3.3
IOUT = 10mA, 4.8V ≤VIN ≤7V
GM66015-5.0
IOUT = 10mA, 6.5V ≤VIN ≤7V
GM66015-A
VIN –VOUT =1.5V,10mA ≤ IOUT ≤ 1.5A
GM66015-1.8
VIN = 3.3V, 10mA ≤ IOUT ≤ 1.5A
GM66015-2.5
ΔVOL
VIN = 4.0V, 10mA ≤ IOUT ≤ 1.5A
GM66015-3.3
VIN = 4,8V, 10mA ≤ IOUT ≤ 1.5A
GM66015-5.0
VIN = 6.5V, 10mA ≤ IOUT ≤ 1.5A
Dropout Voltage
VD
IOUT = 1.5A
Current Limit
ICL
VIN –VOUT =3V
IO(MIN)
GM66015-1.8
Quiescent
Current
GM66015-2.5
GM66015-3.3
Adjust Pin
Current
GM66015-A
IQ
VIN = 5.0V
2.3
V
V
A
1.7
5.0
mA
VIN = 4.0V, 10mA ≤ IOUT ≤ 1.5A
VIN = 4,8V, 10mA ≤ IOUT ≤ 1.5A
5
13
mA
50
120
μA
VIN = 6.5V, 10mA ≤ IOUT ≤ 1.5A
IADJ
Thermal Regulation
Ripple Rejection
1.5
Unit
VIN = 3.3V, 10mA ≤ IOUT ≤ 1.5A
GM66015-5.0
GM66015V2.00
Min
GM66015-A
Minimum Load Current
6
Test Condition
IOUT = 10mA, 2.75V ≤VIN ≤7V
TA = 25°C , 30ms Pulse
RA
IOUT = 750mA, VIN – VOUT = 1.5V
60
0.003
%/W
80
dB
GM66015
1.5A LOW DROPOUT
PRECISION REGULATOR
Application Information
GM66015 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 GM66015 has a composite PNP-NPN output transistor 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 GM66015 higher capacitance
values will improve the transient response and stability. Most applications for Gm66015 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
VOUT
VIN
VIN
C1
C2
GND
C1
ADJ
CADJ
(a) Fixed version
VOUT
GM66015-A
GM66015-3.3
R1
C2
R2
(b) Adjustable version
For GM66015, 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 input voltage is
instantaneously shorted to ground, damage can occur. In this case, a diode connected as shown above
in Figure 1 is recommended.
GM66015V2.00
Figure 1. Protection Diode Scheme
for large Output Capacitors
7
GM66015
1.5A LOW DROPOUT
PRECISION REGULATOR
Output Voltage Sensing
GM66015 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, GM66015 should be connected as shown 1n F1gure 2.
VIN
VOUT
Conductor
Parasitic
RC Resistance
VOUT
VIN
GM66015-3.3
GND
GM66015-A
RLOAD
Conductor
Parasitic
RC Resistance
R1
ADJ
RLOAD
R2
(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
GM66015 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 GM66015, so electrical isolation may be required for some applicat1ons.
Thermal compound should always be used with high current regulators like GM66015.
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 θJA
The relationship of these four factors is expressed by equation (1):
TJ = TA + PD x θJA
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:
GM66015V2.00
VIN(MAX) is the maximum input voltage,
VOUT(MIN) is the minimum output voltage,
IOUT(MAX) is the maximum output current
IQ is the max1mum quiescent current at IOUT(MAX).
8
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 θJA,
the total thermal resistance between the junction and the air. This is expressed by equation (3):
θJA = θJC + θCS + θSA
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 θJA is calculated using equation (3) and the result can be substituted in equation (1). The
value for θCS is 3.5°C/W for a given package typed based on an average d1ie size. For a high current
regulator such as GM66015, the majority of the heat is generated in the power transistor sect1on.
GM66015
1.5A LOW DROPOUT
PRECISION REGULATOR
Package Outline Dimensions – TO263
0.105 – 0.180
(4.191 – 4.572)
0.390 – 0.415
(9.906 – 10.541)
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 + 0.305)
(3.362 – 0.508)
0.050 +/ – 0.012
(1.270 +/– 0.305)
0.020 – 0.039
(0.510 – 0.990)
0.090 – 0.110
(2.286 – 2.794)
0.013 – 0.023
(0.330 – 0.584)
0.050
(1.270)
Package Outline Dimensions – TO252
0.087 – 0.094
(2.220 – 2.400)
0.250 +/ – 0.005
(6.350 +/ – 0.127)
0.039 – 0.050
(1.020 – 1.270)
0.205 – 0.215
(5.210 – 5.460)
0.055 – 0.080
(1.400 – 2.030)
0.018 – 0.023
(0.460 – 0.580)
SEATING PLAN
0.090
(2.285)
TYP
0.180
(4.570)
TYP
0.045 – 0.060
(1.150 – 1.520)
0.030 – 0.045
(0.760 – 1.140)
0.020
(0.510)
MIN
0.018 – 0.023
(0.460 – 0.058)
GM66015V2.00
0.370 – 0.041
(9.400 – 10.420)
0.210 – 0.228
(5.330 – 5.800)
9
GM66015
1.5A LOW DROPOUT
PRECISION REGULATOR
Package Outline Dimensions – SOT223
0.248 – 0.264
(6.30 – 6.71)
0.264 – 0.287
(6.71 – 7.29)
0.010 – 0.014
(0.25 – 0.36)
0.116 – 0.124
(2.95 – 3.15)
0.130 – 0.146
(0.30 – 0.371)
10° - 16°
0.0008 – 0.0040
(0.0203 – 0.1016)
GM66015V2.00
0.09
(2.29)
NOM
10
0.033 – 0.041
(0.84 – 1.04)
0.012
(0.31)
MIN
10°
MAX
0.071
(0.81)
MAX
0.025 – 0.033
(0.64 – 0.84)
10° - 16°
0.081
(4.60)
NOM
GM66015
1.5A LOW DROPOUT
PRECISION REGULATOR
Ordering Number
GM 66015
APM
Gamma
Micro
Circuit Type
-1.8
TA3
R
Output
Voltages
Package
Type
Shipping Type
A: ADJ
1.8: 1.8V
2.5: 2.5V
3.3: 3.3V
5.0: 5.0V
TA3:
TB3:
TC3:
ST3:
T: Tube
R: Tape & Reel
TO263
TO220
TO252
SOT223
G
Blank: Pb Free
G: Green
Note:
Pb-free products:
♦
RoHS compliant and compatible with the current require-ments of IPC/JEDEC J-STD-020.
♦
Suitable for use in 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)
GM66015V2.00
♦
8
10
6
11