AMS1084CD-3.0

AMS1084CT ADMOS | Alldatasheet

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Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 Advanced AMS1084 Monolithic 5A LOW DROPOUT VOLTAGE REGULATOR Systems RoHS compliant FEATURES APPLICATIONS

• • •• Three Terminal Adjustable or Fixed •• •• High Efficiency Linear Regulators
• • •• Output Current of 5A •• •• Microprocessor Supply
• • •• Operates Down to 1V Dropout •• •• Battery Chargers
• • •• Line Regulation: 0.015% •• •• Constant Current Regulators
• • •• Load Regulation: 0.1% •• •• Notebook/Personal Computer Supplies
• • •• TO-220, TO-263 and TO-252 packages available •• •• Portable Instrumentation GENERAL DESCRIPTION The The AMS1084 series of adjustable and fixed voltage regulators are designed to provide 5A output curre nt and to operate down to 1V input-to-output differential. The dropout vol tage of the device is guaranteed maximum 1.5V at ma ximum output current, decreasing at lower load currents. On-chip trimming adjusts the reference voltage to 1%. Current limit is also trimmed, minimizing the s tress under overload conditions on both the regulator and power source circuitry. The AMS1084 devices are pin compatible with older t hree-terminal regulators and are offered in 3 lead TO-220 package, 3 and 2 lead TO-263 (Plastic DD) and TO-252 (D PAK) packa ge. ORDERING INFORMATION: PACKAGE TYPE OPERATING JUNCTION

3 LEAD TO-220 2&3 LEAD TO-263 TO-252 TEMPERATURE RANGE

AMS1084CT AMS1084CM AMS1084CD -40 to 125 ° C AMS1084CT-1.5 AMS1084CM-1.5 AMS1084CD-1.5 -40 to 125 ° C AMS1084CT-2.5 AMS1084CM-2.5 AMS1084CD-2.5 -40 to 125 ° C AMS1084CT-2.85 AMS1084CM-2.85 AMS1084CD-2.85 -40 to 125 ° C AMS1084CT-3.0 AMS1084CM-3.0 AMS1084CD-3.0 -40 to 125 ° C AMS1084CT-3.3 AMS1084CM-3.3 AMS1084CD-3.3 -40 to 125 ° C AMS1084CT-3.5 AMS1084CM-3.5 AMS1084CD-3.5 -40 to 125 ° C AMS1084CT-5.0 AMS1084CM-5.0 AMS1084CD-5.0 -40 to 125 ° C PIN CONNECTIONS FIXED VERSION ADJUSTABLE VERSION 1- Ground 2- V OUT 3- VIN 1- Adjust 2- VOUT 3- VIN TAB IS OUTPUT TO-252 FRONT VIEW 3TAB IS OUTPUT 2L TO-263 FRONT VIEW TAB IS OUTPUT TO-220 FRONT VIEW 3TAB IS OUTPUT 3L TO-263 FRONT VIEW

Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS1084 ABSOLUTE MAXIMUM RATINGS (Note 1) Power Dissipation Internally limited Solder ing information Input Voltage 15V Lead Temperatu re (10 sec) 300 °C Operating Junction Temperature Range Thermal Resistance Control Section -40°C to 125 °C TO-220 package ϕ JA = 50 °C/W Power Transistor -40°C to 150 °C TO-263 package ϕ JA = 30 °C/W * Storage temperature - 65 °C to +150 °C TO-252 package ϕ JA = 80°C/W * With package soldering to 0.5in 2 copper area over backside ground plane or internal power plane ϕ JA can vary from 20 °C/W to >40 °C/W depending on mounting technique.

ELECTRICAL CHARACTERISTICS

Electrical Characteristics at I OUT = 0 mA, and T J = +25°C unless otherwise specified. Parameter Device Conditions Min Typ Max Units Reference Voltage (Note 2) AMS1084 I OUT = 10 mA 10mA ≤ IOUT ≤ 5A, 1.5V ≤ (V IN - VOUT ) ≤ 12V 1.238 1.225 1.250 1.250 1.262 1.270 V V Output Voltage (Note 2) AMS1084-1.5 0 ≤ I OUT ≤ 5A , 3V ≤ VIN ≤ 12V 1.485 1.470 1.500 1.500 1.515 1.530 V V AMS1084-2.5 0 ≤ IOUT ≤ 5A , 4V ≤ VIN ≤ 12V 2.475 2.450 2.500 2.500 2.525 2.550 V V AMS1084-2.85 0 ≤ IOUT ≤ 5A , 4.35V ≤ VIN ≤ 12V 2.82 2.79 2.850 2.850 2.88 2.91 V V AMS1084-3.0 0 ≤ IOUT ≤ 5A , 4.5V ≤ VIN ≤ 12V 2.970 2.940 3.000 3.000 3.300 3.360 V V AMS1084-3.3 0 ≤ IOUT ≤ 5A , 4.75V ≤ VIN ≤ 12V 3.267 3.235 3.300 3.300 3.333 3.365 V V AMS1084-3.5 0 ≤ IOUT ≤ 5A, 5V ≤ VIN ≤ 12V 3.465 3.430 3.500 3.500 3.535 3.570 V V AMS1084-5.0 0 ≤ IOUT ≤ 5A , 6.5V ≤ VIN ≤ 12V 4.950 4.900 5.000 5.000 5.050 5.100 V V Line Regulation AMS1084/-1.5/-2.5/- I LOAD = 10 mA , 1.5V ≤ (V IN - VOUT ) ≤ 12V 0.3 0.6 mV mV Load Regulation (Notes 2, 3) AMS1084 (V IN - VOUT ) =3V, 10mA ≤ IOUT ≤ 5A 0.1 0.2 0.3 0.4 AMS1084-1.5 VIN = 5V, 0 ≤ IOUT ≤ 5A 3 mV mV AMS1084-2.5 VIN = 5V, 0 ≤ IOUT ≤ 5A 3 mV mV AMS1084-2.85 VIN = 5V, 0 ≤ IOUT ≤ 5A 3 mV mV AMS1084-3.0 VIN = 5V, 0 ≤ IOUT ≤ 5A 3 mV mV AMS1084-3.3 VIN = 5V, 0 ≤ IOUT ≤ 5A 3 mV mV AMS1084-3.5 VIN = 5.25V, 0 ≤ IOUT ≤ 5A 3 mV mV AMS1084-5.0 VIN = 8V, 0 ≤ IOUT ≤ 5A 5 mV mV Dropout Voltage IN - VOUT ) ∆ V OUT , ∆ VREF = 1%, IOUT = 5 A (Note 4) 1.3 1.5 V

Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS1084 Electrical Characteristics at I OUT = 0 mA, and T J = +25°C unless otherwise specified. Parameter Device Conditions Min Typ Max Units Current Limit IN - VOUT ) = 5V 5.00 6.00 7.00 A Minimum Load Current AMS1084 (V IN - VOUT ) = 12V (Note 5) 5 10 mA Quiescent Current AMS1084/-1.5/-2.5/- VIN ≤ 12V mA Ripple Rejection AMS1084 f =120Hz , COUT = 25 µ F Tantalum, I OUT = 5A, (V IN -VOUT ) = 3V, C ADJ =25 µ F 60 75 dB AMS1084-1.5 f =120Hz , C OUT = 25 µ F Tantalum, I OUT = 5A, VIN = 4.5V dB AMS1084-2.5 f =120Hz , C OUT = 25 µ F Tantalum, I OUT = 5A, VIN = 5.5V dB AMS1084-2.85 f =120Hz , C OUT = 25 µ F Tantalum, I OUT = 5A, VIN = 6V dB AMS1084-3.0 f =120Hz , C OUT = 25 µ F Tantalum, I OUT = 5A VIN = 6V 60 72 dB AMS1084-3.3 f =120Hz , C OUT = 25 µ F Tantalum, I OUT = 5A VIN = 6.3V 60 72 dB AMS1084-3.5 f =120Hz , C OUT = 25 µ F Tantalum, I OUT = 5A VIN = 6.5V 60 72 dB AMS1084-5.0 f =120Hz , C OUT = 25 µ F Tantalum, I OUT = 5A VIN = 8V 60 68 dB Thermal Regulation AMS1084 T A = 25°C, 30ms pulse 0.008 0.04 %W Adjust Pin Current AMS1084 10mA ≤ IOUT ≤ 5A , 1.5V ≤ (V IN - VOUT ) ≤ 12V 55 120 µ A µ A Adjust Pin Current Change AMS1084 10mA ≤ I OUT ≤ 5A , 1.5V ≤ (V IN - VOUT ) ≤ 12V 0.2 µ A Temperature Stability 0.5 % Long Term Stability T A =125°C, 1000Hrs 0.3 1 % RMS Output Noise (% of V OUT ) TA = 25°C , 10Hz ≤ f ≤ 10kHz 0.003 Thermal Resistance Junction-to-Case D Package: Control Circuitry/ Power Transistor M/T Package: Control Circuitry/ Power Transistor 2/6.0 1.5/4.0 °C/W °C/W Parameters identified with boldface type apply over the full operating temperature range. Note 1: Absolute Maximum Ratings indicate limits beyond whi ch damage to the device may occur. For guaranteed specifications and test conditions, see the Electrical Characteristics . The guaranteed specifications apply only for the test conditions listed. Note 2: Line and Load regulation are guaranteed up to 15W power dissipation for M and T package sand 2.2W for D package @25°C. Power dissipation is determined by the input/output differential and the output current. Guaranteed maximum power dissipati on will not be available over the full input/output range. Note 3: See thermal regulation specifications for changes i n output voltage due to heating effects. Line and l oad regulation are measured at a constant junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead ~1/8” from the package body. Note 4: Dropout voltage is specified over the full output current range of the device. Note 5: Minimum load current is defined as the minimum outp ut current required to maintain regulation. When (V IN - VOUT ) = 12V the device is guaranteed to regulate if the output current is greater than 10mA.

Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS1084 APPLICATION HINTS The AMS1084 series of adjustable and fixed regulato rs are easy to use and have all the protection features expected i n high performance voltage regulators: short circuit prote ction and thermal shut-down. Pin compatible with older three terminal adjustable regulators, these devices offer the advantage of a lower dropou t voltage, more precise reference tolerance and improved reference stability with temperature. Stability The circuit design used in the AMS1084 series requi res the use of an output capacitor as part of the device frequency compensation. The addition of 150 µ F aluminum electrolytic or a 22 µ F solid tantalum on the output will ensure stability for al l operating conditions. When the adjustment terminal is bypassed with a cap acitor to improve the ripple rejection, the requirement for a n output capacitor increases. The value of 22 µ F tantalum or 150 µ F aluminum covers all cases of bypassing the adjustme nt terminal. Without bypassing the adjustment terminal smaller c apacitors can be used with equally good results. To ensure good transient response with heavy load current changes capacitor values on the order of 100 µ F are used in the output of many regulators. To further improve stability and t ransient response of these devices larger values of output c apacitor can be used. Protection Diodes Unlike older regulators, the AMS1084 family does no t need any protection diodes between the adjustment pin and th e output and from the output to the input to prevent over-stress ing the die. Internal resistors are limiting the internal curren t paths on the AMS1084 adjustment pin, therefore even with capacit ors on the adjustment pin no protection diode is needed to ens ure device safety under short-circuit conditions. Diodes between the input and output are not usually needed. Microsecond surge currents of 50A to 100A can be ha ndled by the internal diode between the input and output pins of the device. In normal operations it is difficult to get those valu es of surge currents even with the use of large output capacita nces. If high value output capacitors are used, such as 1000 µ F to 5000 µ F and the input pin is instantaneously shorted to ground, damage can occur. A diode from output to input is recommended, when a crowbar circuit at the input of the AMS1084 is used . Normal power supply cycling or even plugging and unpluggin g in the system will not generate current large enough to do any damage. The adjustment pin can be driven on a transient bas is ±25V, with respect to the output without any device degradatio n. As with any IC regulator, none the protection circuitry will be functional and the internal transistors will break down if the max imum input to output voltage differential is exceeded. AMS1084 IN OUT ADJ + COUT 150 µ F VOUT CADJ 10 µ F VIN Overload Recovery When the power is first turned on, as the input vol tage rises, the output follows the input, permitting the regulator to start up into heavy loads. During the start-up, as the input volt age is rising, the input-to-output voltage differential remains small, allowing the regulator to supply large output currents. A proble m can occur with a heavy output load when the input voltage is high and the output voltage is low, when the removal of an output short will not permit the output voltage to recover. The load line for such a load may intersect two points on the output current curv e. In this case, there are two stable output operating points for th e regulator. With this double intersection, the power supply may need to be cycled down to zero and brought up again to make the outpu t recover. Ripple Rejection The ripple rejection values are measured with the a djustment pin bypassed. The impedance of the adjust pin capacitor at the ripple frequency should be less than the value of R1 (norm ally 100 Ω to120 Ω ) for a proper bypassing and ripple rejection appro aching the values shown. The size of the required adjust p in capacitor is a function of the input ripple frequency. If R1=100 Ω at 120Hz the adjust pin capacitor should be 25 µ F. At 10kHz only 0.22 µ F is needed. The ripple rejection will be a function of output v oltage, in circuits without an adjust pin bypass capacitor. The output ripple will increase directly as a ratio of the output voltage to the reference voltage (V OUT / V REF ). Output Voltage The AMS1084 series develops a 1.25V reference volta ge between the output and the adjust terminal. Placing a resis tor between these two terminals causes a constant current to flow thr ough R1 and down through R2 to set the overall output voltage.

Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS1084 TYPICAL PERFORMANCE CHARACTERISTICS -2.0 -1.0 1.0 2.0 -50 -25 0 25 50 75 100 125 150 TEMPERATURE (° C) 0 1 2 3 4 5 6 Dropout Voltage -0.20 -0.15 -0.10 -0.05 0.05 0.10 -50 -25 0 25 50 75 100 125 150 0 2 4 6 8 10 12 Short-Circuit Current Load Regulation -0.4 0.6 50 60 70 80 90 100 110 0 100 -40 100 Temperature Stability Ripple Rejection vs. Current 100 1k 10k 100k Ripple Rejection 100 50 -0.6 ~~ ~~ -0.2 0.2 0.4 Load Transient Response 200 Line Transient Response 14 ~~ ~~ -60 -20 Maximum Power Dissipation TO263 and TO220* 120 130 140 150 TIME (µ s) TIME (µ s) CASE TEMPERATURE (° C) *AS LIMITED BY MAXIMUM JUNCTION TEMPERATURE POWER (W) INPUT DEVIATION (V) OUTPUT VOLTAGE DEVIATION (mV) LOAD CURRENT (A) OUTPUT VOLTAGE DEVIATION (V) FREQUENCY (Hz) RIPPLE REJECTION (dB) RIPPLE REJECTION (dB) OUTPUT CURRENT (0 TO I FULL LOAD ) INPUT/OUTPUT DIFFERENTIAL (V) SHORT-CIRCUIT CURRENT (A) OUTPUT VOLTAGE CHANGE (%) TEMPERATURE (° C) OUTPUT VOLTAGE DEVIATION (%) OUTPUT CURRENT (A) MINIMUM INPUT/OUTPUT DIFFERENTIAL (V) fR = 120Hz VRIPPLE ≤ 3VP-P fR =20kHz VRIPPLE ≤ 0.5VP-P IOUT =IFULL LOAD (VIN -VOUT )≥ VDROPOUT VRIPPLE ≤ 3VP-P VRIPPLE ≤ 0.5VP-P (VIN -VOUT ) ≥ 3V CADJ = 0 VOUT = 10V IIN = 0.2A CIN = 1µ F TANTALUM COUT = 10 µ F TANTALUM VOUT = 10V VIN = 13V PRELOAD = 100mA CIN = 1µ F COUT = 10 µ F TANTALUM CADJ = 0 ∆ I = 5A TJ =150° C TJ =25° C 0 2 4 6 8 10 12 TJ =-20° C TJ =-40° C

Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS1084 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) -50 -25 0 25 50 75 125 100 0 2 4 6 8 10 12 14 100 150 Minimum Operating Current (Adjustable only) Adjust Pin Current (Adjustable only) ADJUST PIN CURRENT ( µ A) TEMPERATURE (° C) INPUT/OUTPUT DIFFERENTIAL (V) MINIMUM OPERATING CURRENT (mA) TJ = 25° C TJ = 150° C PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted.

3 LEAD TO-220 PLASTIC PACKAGE (T)

0.330-0.370 0.050 (8.382-9.398) 0.090-0.110 TYP 0.390-0.415 (9.906-10.541) 0.165-0.180 (4.191-4.572) 0.045-0.055 (1.143-1.397) 0.095-0.115 (2.413-2.921) 0.013-0.023 (0.330-0.584) T (TO-220) AMS DRW# 042193 0.147-0.155 (3.734-3.937) DIA 0.230-0.270 (5.842-6.858) 0.460-0.500 (11.684-12.700) 0.570-0.620 (14.478-15.748) 0.218-0.252 (5.537-6.401) 0.520-0.570 (13.208-14.478) 0.980-1.070 (24.892-27.178) 0.028-0.038 (0.711-0.965)

Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS1084 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted (Continued).

3 LEAD TO-263 PLASTIC DD (M)

2 LEAD TO-263 PLASTIC DD (M)

Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS1084 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted (Continued). TO-252 PLASTIC PACKAGE (D)