GM6605-1.8TA3R

GM6605 GAMMA | Alldatasheet

Document overview

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Technical content

Features

Adjustable or Fixed Output Output Current of 5.0A Dropout Voltage (typical) 1.15V @ 5.0A Typical Line Regulation 0.04% Typical Load Regulation 0.08% Fast Transient Response Current Limit Protection Thermal Shutdown Protection TYPICAL APPLICA TION CIRCUITS Medical Equipment Printer Supplies Motherboards VOUT ADJ VIN 3.3V@3.0A 22µF 5.0V 10µF 5.0V GM6605-Adj 5.0V 0.1µF 5.0V 200W 1.0% 124W 1.0% (Adjustable Version) VOUT GND VIN 3.3V@3.0A 10µF 5.0V GM6605-3.3 (Fixed Version) 22µF 5.0V GM6605 V0.11 www.gammamicro.com 1 5.0V

TO-252 (DPAK) On fixed versions Pin 1 = GND, on adjustable versions Pin 1 = A Tab = VOUT DJ Package Shipping TO-220 TO-220 TO-220 TO-220 TO-220 TO-252 50 / TubeUnits 50 / TubeUnits 50 / TubeUnits 50 / TubeUnits 50 / TubeUnits 80 / TubeUnits TO-263-2 TO-263-2 TO-263-2 TO-263-2 TO-263-2 TO-263-2 TO-263-2 TO-263-2 TO-263-2 TO-263-2 TO-252

50 Units / Tube

GM6605 -1.8TB3T GM6605 -2.5TB3T GM6605 -3.3TB3T GM6605 -5.0TB3T GM6605 -3.3TC3R Ordering Number GM6605-AT A3T GM6605-1.8TA3T GM6605-2.5TA3T GM6605-3.3TA3T GM6605-5.0TA3T GM6605-AT A3R GM6605-1.8TA3R GM6605-2.5TA3R GM6605-3.3TA3R GM6605-5.0TA3R GM6605-3.3TC3T Output V oltage Adj Adj Adj 1.8 2.5 3.3 5.0 3.3 5.0 3.3 5.0 3.3 3.3 2.5 2.5 1.8 1.8 V V = Output Voltage (50 = 5.0V, A =Ad ) A = Assembly Location Y = Year W W = Weekly j 800 / Tape & ReelUnits 800 / Tape & ReelUnits 800 / Tape & ReelUnits 800 / Tape & ReelUnits 800 / Tape & ReelUnits 2,500 / Tape & ReelUnits GM6605 MARKING INFORMATION & PIN CONFIGURATIONS (Top View) VINVOUT GND* GM6605 VVAYWW TO-220 GM6605 VVAYWW VINVOUT GND* GM6605 VVAYWW TO-263-2 (D PAK) VINVOUT GND*

ORDERING INFORMATION

• For detail Ordering Number identification, please see last page.

PARAMETER SYMBOL VALUE UNIT Internally limited W V IN 15 V TLEAD TJ +150 300 PD BLOCK DIAGRAM Input Voltage Operating Junction Temperature Range Power Dissipation Junction Temperature Lead Temperature(Soldering, 10sec) VIN VOUT GND Thermal Shutdown Bandgap Reference Output Current Limit Error Amplifier ABSOLUTE MAXIMUM RATINGS VIN VOUT ADJ Thermal Shutdown Bandgap Reference Output Current Limit Error Amplifier TSTG -65 to + 150 °CStorage Temperature Range TJ 0 to + 125 (Fixed Version) (Adjustable Version)

ELECTRICAL CHARACTERISTICS

(Typicals and limits appearing in normal type apply for T = 25°C) J Parameter Symbol Min Typ Max UnitCondition Reference Voltage Output Voltage GM6605-Adj GM6605-1.8 GM6605-2.5 GM6605-3.3 GM6605-5.0 VREF VO I =10mA, V -V =1.5VOUT IN OUT 10mA I 5A, 3.3V V 7VOUT IN I =10mA, V =3.3VOUT IN 10mA I 5A, 3.3V V 7VOUT IN I =10mA, V =4VOUT IN 10mA I 5A, 4V V 7VOUT IN I =10mA, V =4.8VOUT IN 10mA I 5A, 4.8V V 7VOUT IN I =10mA, V =6.5VOUT IN 10mA I 5A, 6.5V V 7VOUT IN 1.238 1.230 1.782 1.764 2.475 2.460 3.267 3.247 4.950 4.920 1.250 1.250 1.800 1.800 2.500 2.500 3.300 3.300 5.000 5.000 1.262 1.270 1.818 1.836 2.525 2.540 3.333 3.353 5.050 5.080 V V V V V Line Regulation Load Regulation GM6605-Adj GM6605-Adj GM6605-1.8 GM6605-1.8 GM6605-2.5 GM6605-2.5 GM6605-3.3 GM6605-3.3 GM6605-5.0 GM6605-5.0 REGLINE REGLOAD 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 0.40 0.40 0.40 0.40 0.40 1.3 I =10mA, 3.3V V 7VOUT IN I =10mA, 4V V 7VOUT IN I =10mA, 4.8V V 7VOUT IN I =10mA, 6.5V V 7VOUT IN V -V =1.5V, 10mA I 5AIN OUT O V =3.8V, 10mA I 5AIN O V =4.5V, 10mA I 5AIN O V =5.3V, 10mA I 5AIN O V =7V, 10mA I 5AIN O Dropout Voltage Current Limit Minimum Load Current GM6605-Adj VD ICL IO MIN I =5AOUT V -V =3VIN OUT V =5VIN 5.5 V A mA mA Quiescent Current GM6605-1.8 GM6605-2.5 GM6605-3.3 GM6605-5.0 IQ V =3.3V, 10mA I 5AIN O V =4.0V, 10mA I 5AIN O V =4.8V, 10mA I 5AIN O V =6.5V, 10mA I 5AIN O 0.005 120Adjust Pin Current Temperature Coefficient Ripple Rejection I =10mA, 2.75V V 7VOUT IN V -V =1.5V, I =10mAIN OUT OUT µA dB GM6605-Adj IADJ RA V -V =1.5V, I =5AIN OUT OUT %/°C I =10mA, OUT 0.04 0.20

APPLICATION INFORMATION

GM6605 series linear regulators provide fixed and ad- justable output voltages at currents up to 5.0A. These regulators are protected against over-current condi- tions and include thermal shutdown protection. The GM6605 has a composite PNP-NPN output transistor and require an output capacitor for stability. A detailed procedure for selecting this capacitor is as followed. Stability Considerations 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 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 instanta- neous load current. The ESR of the output capacitor causes an immediate drop in output voltage given by: 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. Protection Diodes 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 IN drops. In 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. DV = I x ESDD (a),(b) Figure 1 Protection Diode Scheme for Large Output Capacitors (a) Fixed Version (b) Adjustable Version VIN VOUT CADJ GM6605-Adj ADJ VIN VOUT C1 C2R1 GM6605-3.3 GND VIN VOUT IN4002 VIN VOUT IN4002

GM6605 series is three terminal regulator, so they can- not provide true remote load sensing. Load regulation is limited by the resistance of the conductors connect- ing the regulator to the load. For best results, Gm6605 should be connected as shown in Figure 2. Calculating Power Dissipation and Heat Sink Requirements GM6605 series precision linear regulators include ther- mal shutdown and current limit circuitry to protect the devices. However, high power regulators normally oper- ate at high junction temperatures so it is important to calculate the power dissipation and junction tempera- tures accurately to be sure that you use and adequate heat sink. The case is connected to V on GM6605. OUT so electrical isolation may be required for some appli- cations. Thermal compound should always be used with high current regulators like GM6605. GM6605-3.3 VIN VOUT R LOAD RC GND VIN Conductor Parasitic Resistance (a) Fixed Version (b) Adjustable Version GM6605-A ADJ VOUTVINVIN RC R LOAD (a),(b) Figure 2 Conductor Parasitic Resistance Effects are Minimized by this Grounding Scheme For Fixed and Adjustable Output Regulators The thermal characteristics of an IC depend on four factors: 1. Maximum Ambient Temperature T (°C)A 2. Power Dissipation P (Watts)D 3. Maximum Junction Temperature T (°C) J 4. Thermal Resistance Junction to ambient R JAQ (°C/W) These relationship of these four factors is expressed by equation (1): 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. The maximum power dissipation for a regulator is ex- pressed by equation (2): where: V is the maximum input voltage,IN(max) V is the minimum output voltage,OUT(min) I is the maximum output currentOUT(max) I is the maximum quiescent current at I .Q OUT(max) 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- sistance are summed to determine R , the total QJA thermal resistance between the junction and the air. This is expressed by equation (3): Where all of the following are in °C/W: R is thermal resistance of junction to case, QJC R is thermal resistance of case to heat sink,QCS R is thermal resistance of heat sink to ambient air QSA The value for R is calculated using equation (3) QJA and the result can be substituted in equation (1). The value for R is 3.5°C/W for a given package type QJC based on an average die size. For a high current reg- ulator such as GM6605, the majority of the heat is generated in the power transistor section. Conductor Parasitic Resistance

TO-252 P ACKAGE OUTLINE DIMENSIONS 6.50 ± 0.05 5.340 ± 0.05 29° ± 0.5° REF 0.6 6.10 ± 0.05 7.20 ± 0.05 0.75 ± 0.10 0.89 ± 0.05 0.81 ± 0.038 2.30 ± 0.05 0.508 ± 0.0127 0.070 ± 0.05 1.0 ± 0.05 0.75 ± 0.10 1.525 ± 0.10 2.70 ± 0.10 9.900 R0.15 max Unit: mm R 0.25 ± 0.13 TO-263-2 P ACKAGE OUTLINE DIMENSIONS Pad Layout 9.90 ± 0.20 15° 0.40 1.50 DP0.20 9.20 ± 0.20 4.90 ± 0.20 15.3 ± 0.20 1.27 ± 0.10 0.90 ± 0.10

2.54 TYP

(2.54 ± 0.20) 1.4 ± 0.20 4.50 ± 0.20 1.30+0.1 -0.05 0.10 ± 0.01 2.40 ± 0.20 2.00 ± 0.10 R0.30 R0.30 2.54 ± 0.10 0.50 +0.1 -0.05 4.0 7.0 10.0 ± 0.20 0.40 0.90 7.2 9.20 ± 0.20 4.90 ± 0.20 Unit: mm 10.00 ± 0.20 0.33 8.38 0.63 17.02 0.12 3.05 0.04 1.016 0.24 6.096 0.42 10.66 Inches mm ( ) 1.20 R 0.45 0.75 R 0.3 Pad Layo ut 0.244 6.20 0.228 5.80 0.118 3.0 0.063 1.6 0.243 6.172 0.101 2.58 Inches mm ( )

GM 6605 1.8 TB3 T Gamma Micro. Circuit Type Output Voltage A: Adj, 1.5: 1.5V Package TA3: TO-263-2 TB3: TO-220 TC3: TO-252 Shipping T: Tube R: Tape & Reel TO-220 P ACKAGE OUTLINE DIMENSIONS 9.90 ± 0.20 3.60 ± 0.20 1.50 DP0.20 13.08 ± 0.20 9.20 ± 0.20 3.70 ± 0.20 1.30 2.80 ± 0.10 15.90 ± 0.20 18.95 MAX10.08 ± 0.30 1.52 ± 0.10 0.80 ± 0.10 (2.54 ± 0.20) 0.50 2.40 ± 0.20 Unit: mm 1.30 ± 0.10 4.50 ± 0.20 8.70 1.70 4.60 1.46 1.00 3.00 45° +0.1 -0.05 +0.1 -0.05 8.0 7.0 7.0 0.9 3-R0.2 10.00 ± 0.20 8.40 1.27 ± 0.10 2 - R 0.3