AV1085 AVICTEK | Alldatasheet
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@vic 3A Adjustable Low Dropout Linear Regulator (LDO) AV1085 TO-252,263,220 MAY-31-2001 GENERAL DESCRIPTION The AV1085 is a positive and low dropout three-terminal voltage regulator with 3A out- put current capability. This device is design- ed for use in low voltage applications that offers lower dropout voltage and faster tran- sient response. This device is fully protected against over current faults, over temperature operation, reversed input polarity, reversed lead insert- ion, transient voltage spike …etc. On-Chips trimming the reference voltage to 1% and features the low dropout of maxi- mum 1.45 volts. The AV1085 Series regulators are available in the popular industry standard TO-220 TO-263 and TO-252 packages.
FEATURES
z Very easy to use, it requires only two external resistors to set the output voltage z Low dropout voltage: 1.3V typical at up to 3A z Low ground current z Fast transient response z Current & thermal limiting z Line regulation: 0.5% typical z Load regulation: 0.5% typical z TO-220, TO-263 and TO-252 packages
APPLICATIONS
z High current microprocessor supplies z Low voltage logic supply z Powering VGA & sound card z Portable instrumentation zz zz Constant current regulator z Post regulator for switching power supply TYPICAL APPLICATION - Basic Adjustable Regulator Circuit - +Cin 10uF + Cout 10uF IN ADJ OUT AV1085Vin 1. Cin needed if device is far from from filter capacitors. Iadj Vo = Vref (1+R2/R1) + Iadj x R2 Vout Vref 2. Cout required for stability.
Linear Regulator (LDO) @vic AV1085 TO-252,263,220 MAY-31-2001 ABSOLUTE MAXIMUM RATINGS z Maximum Supply Voltage 7V z Operating Junction Temperature Range 0 to 125 °C z Power Dissipation Internally Limited z Storage Temperature Range -40 to 150 °C z Thermal Resistance Junction to Case, θJC 5 °C/W z Lead Temperature (Soldering, 10 Seconds) 260 °C z Thermal Resistance Junction to Ambient, θJA TO-263 TO-252 TO-220 60 °C/W 70 °C/W 50 °C/W ELECTRICAL CHARACTERISTICS (Unless otherwise specified, TA = 25 °C.) Parameter Symbol Test Conditions Typical Limits Reference Voltage V REF V IN = 5V, IOUT = 10mA 1.25V 1.23VMin 1.27VMax Dropout Voltage V D ΔVREF = 1%, IOUT = 3A 1.3V 1.45V Line Regulation REG (LINE) (VOUT + 1.5V) ≤ VIN ≤ 7V, IOUT = 10mA 0.5% 2% Load Regulation REG (LOAD) (VIN -VOUT) = 3V, 10mA ≤ IOUT ≤ 3A 0.5% 2.5% Minimum Load Current IO 1.5V ≤ (VIN -VOUT) ≤ 5.75V 10mA Adjust Pin Current I ADJ 55µA 100 µA Current Limit I CL V IN - VOUT = 2V 5.0A 4.0A (Min) RMS Output Noise V N 0.003% of VOUT Ripple Rejection Ratio RA f = 120Hz, CADJ = 22µF for ADJ pin, VIN = 5V, IOUT = 3A 72dB 60dB (Min) DEVICE SELECTION GUIDE Device AV1085D AV1085S AV1085S3 AV1085T Package TO-252 TO-263 (2-Lead) TO-263 (3-Lead) TO-220 Marking AV1085D AV1085S AV1085S3 AV1085T
@vic 3A Adjustable Low Dropout Linear Regulator (LDO) AV1085 TO-252,263,220 MAY-31-2001 PIN CONFIGURATIONS Pin # Function
1 Adjust
2 Output
3 Input
Note: TAB is Output Pin
Linear Regulator (LDO) @vic AV1085 TO-252,263,220 MAY-31-2001 TO-263 (D2PAK) MECHANICAL DATA mm mm B 4.2 4.7 I 9.8 10.3 C 1.20 1.35 J 6.5 D 2.8 K 1.5 G 8.5 9 9.5 N
Linear Regulator (LDO) @vic AV1085 TO-252,263,220 MAY-31-2001 TO-263 (D2PAK) MECHANICAL DATA mm mm B 4.2 4.7 I 9.8 10.3 C 1.20 1.35 J 6.5 D 2.8 K 1.5 G 8.5 9 9.5 N
@vic 3A Adjustable Low Dropout Linear Regulator (LDO) AV1085 TO-252,263,220 MAY-31-2001 TO-220 (3-Lead) MECHANICAL DATA mm mm C 20 J 4.4 4.6 4.8 G 0.72 0.8 0.88 N 7°
Linear Regulator (LDO) @vic AV1085 TO-252,263,220 MAY-31-2001 TO-252 (DPAK) MECHANICAL DATA mm mm A 9.35 10.1 H 0.8 B 2.2 2.4 I 6.4 6.6 C 0.48 0.6 J 5.2 5.4 D 0.89 1.5 K 0.6 1 E 0.45 0.6 L 0.64 0.9 F 0.03 0.23 M 4.4 4.6 G 6 6.2 N