GS1085 GS1085CE GS1085CT GS1085CM GS1085-1 GS1085-2 GS1085-3 - Datasheet Archive

 

Vishay New Product formerly General Semiconductor 3A Low Dropout Positive Adjustable Regulator TO-252 (DPak) TO-263AB (D2Pak)

 

GS1085 GS1085 Vishay New Product formerly General Semiconductor 3A Low Dropout Positive Adjustable Regulator TO-252 (DPak) TO-263AB (D2Pak) TO-220AB 2 3 2 3 1 1 3 2 1 GS1085CE GS1085CE GS1085CT GS1085CT GS1085CM GS1085CM Pin Definition 1. Adjust/Gnd. 2. Vout (tab) 3. Vin Description The GS1085 GS1085 is a low dropout three terminal regulator with 3A output current capability. The output voltage is adjustable with the use of a resistor divider. For fixed output voltage versions, the output voltage is internally set at 1.8V, 2.5V, or 3.3V. Dropout is guaranteed at a maximum of 1.4V at maximum output current. Its low dropout voltage and fast transient response make it ideal for low voltage microprocessor applications. Internal current and thermal limiting provides protection against any overload condition that would create excessive junction temperatures. Features · Dropout Voltage 1.3V at 3A Output Current · Fast Transient Response · Line Regulation typically at 0.015% · Load Regulation typically at 0.1% Applications · Internal thermal and current limiting · Adjustable Output Voltage or Fixed 1.8V, 2.5V, 3.3V · Post Regulator for Switching Supply · Standard 3-Pin Power Packages · Microprocessor Power Supplies · Constant-Current Regulators · Motherboard I/O Power Supplies Functional Block Diagram Mechanical Data VIN VREF 1.25V + + GM - Current Amp High temperature soldering guaranteed: 260°C/10 seconds at terminals Thermal Limit 55µA Case: TO-220AB, TO-263AB (D2PAK), TO-252 (DPAK) Current Limit Case outlines are on the back page For fixed voltage device ADJ Document Number 74821 24-May-02 VOUT GND www.vishay.com 1 GS1085 GS1085 Vishay formerly General Semiconductor Maximum Ratings and Thermal Characteristics Parameter (TA = 25°C unless otherwise noted) Symbol Unit Vin 7 V RJC 3.0 8.0 3.0 °C/W TJ 0 to +125 °C Tstg Vin Pin to ADJ/GND Pin Value ­65 to 150 °C Thermal Resistance ­ Junction to Case TO-220AB TO-252 TO-263AB Operating Junction Temperature Range Storage Temperature Range Electrical Characteristics (1) Parameter Reference Voltage TJ = 25°C (2) , VIN = 5V, Io = 10mA unless otherwise noted. Symbol Test Conditions Min Typ Max VREF TJ = 25°C 0°C TJ 125°C 2.65V VIN 7V 10mA Io 3A 1.238 1.225 1.250 1.250 1.262 1.275 1.78 2.47 3.26 0.98VN 1.8 2.5 3.3 VN 1.82 2.53 3.33 1.02VN GS1085-1 GS1085-1.8 VIN = 5V GS1085-2 GS1085-2.5 VIN = 5V GS1085-3 GS1085-3.3 VIN = 7V GS1085 GS1085 0°C TJ 125°C 2.65V VIN 5V 10mA Io 3A Unit V Output Voltage VOUT Line Regulation REGline 2.65V VIN 7V TJ = 25°C 0°C TJ 125°C 0.015 0.035 0.2 0.2 % VO Load Regulation REGload 10mA Io 3A TJ = 25°C 0°C TJ 125°C 0.1 0.2 0.3 0.4 % VO Dropout Voltage VDROP 0°C TJ 125°C Io = 3A Io = 2A Io = 1A 1.3 1.28 1.25 1.4 1.37 1.34 Output Current Io 0°C TJ 125°C 3.0 4.0 ­ A Iadj 2.65 Vin 7V 10mA Io 3A 0°C TJ 125°C ­ 55 120 µA Iadj 2.65 Vin 7V 10mA Io 3A 0°C TJ 125°C ­ 0.2 5 µA TS Io = 0.5A 0°C TJ 125°C ­ 0.5 ­ %VO ILMIN 0°C TJ 125°C ­ 5 10 mA Adjust Pin Current Adjust Pin Current Change Temperature Stability Minimum Load Current Adjustable Version www.vishay.com 2 V V Document Number 74821 24-May-02 GS1085 GS1085 Vishay formerly General Semiconductor Electrical Characteristics (con't.)(1) Parameter TJ = 25°C (2) , VIN = 5V, Io = 10mA unless otherwise noted. Symbol Test Conditions Min Typ Max Unit Quiescent Current Fixed Voltage Version IQ 0°C TJ 125°C ­ 10 14 mA RMS Output Noise N 10HZ f 10 kHZ ­ 0.003 ­ %VO Ripple Rejection Ratio RR f = 120 HZ, CO = 25µF Cadj = 25µF 60 68 ­ dB Thermal Regulation RTH TA = 25°C, 30ms Pulse ­ 0.02 0.05 %/W TA = 125°C, 1000 Hrs ­ 0.3 ­ %VO Long Term Stability Notes: (1) All parameters, except nominal output voltage are specified for the variable voltage version, allowing a wider Vin Range. The specified limits also apply for the fixed voltage versions over the allowable input voltage range: GS1085-1 GS1085-1.8 (3.2V - 7.0V), GS1085-2 GS1085-2.5 (3.9V - 7.0V), GS1085-3 GS1085-3.3 (4.75V - 7.0V). (2) To maintain the specified junction temperatures, low duty cycle pulse testing is required for most parameters. Typical Application Circuit VIN 5V C1 10µF 3 GS1085-1 GS1085-1.8 GS1085-2 GS1085-2.5 GS1085-3 GS1085-3.3 + 2 1 Fixed Voltage Regulator VOUT VIN 5V 3 GS1085 GS1085 1 ADJ + C2 10µF C1 10µF VOUT 3.3V 2 VREF R1 125 1% + + C2 10µF R2 205 1% Adjustable Voltage Regulator Notes: VREF = VOUT ­ VADJ = 1.25V (typ.) VOUT = VREF x (1+R2/R1) + IADJ x R2 IADJ = 55µA (typ.) (1) C1 needed if device is far away from filter capacitors (2) C2 required for stability Document Number 74821 24-May-02 www.vishay.com 3 GS1085 GS1085 Vishay formerly General Semiconductor Ratings and Characteristic Curves (TA = 25°C unless otherwise noted) Fig. 1 ­ Dropout Voltage vs. Output Current Fig. 2 ­ Load Regulation vs. Temperature 0.10 IOUT = 3A 1.20 Output Voltage Deviation (%) Minimum Differential Voltage (V) 1.22 1.18 1.16 1.14 1.12 1.10 1.08 0.05 0 -0.05 -0.10 -0.15 1.06 -0.20 0.5 0 1.0 1.5 2 2.5 0 3.0 20 40 80 100 Fig. 3 ­ Minimum Load Current (Adjustable Version) Fig. 4 ­ Adjust Pin Current 100 10 Adjust Pin Current (µA) 8 TJ = 125°C 6 TJ = 25°C 4 TJ = 0°C 2 0 1 2 3 4 5 80 60 40 20 0 -50 6 -25 0 25 50 75 100 Input / Output Differential Voltage (V) 125 Temperature (°C) Fig. 5 ­ Temperature Stability Fig. 6 ­ Ripple Rejection (with Cadj 25µF) 80 1.0 COUT = 25µF Iout = 0.5A 0.75 70 Ripple Rejection (dB) Output Voltage Deviation (%) 120 Temperature (°C) Output Current (A) Minimum Operating Current (mA) 60 0.5 0.25 0.0 -0.25 -0.5 COUT = 10µF 60 COUT = 25µF 50 40 30 COUT = 10µF -0.75 -1.0 -20 20 0 20 40 60 80 Temperature (°C) www.vishay.com 4 100 120 140 10 100 1K 10K 100K 1M Frequency (Hz) Document Number 74821 24-May-02 GS1085 GS1085 Vishay formerly General Semiconductor Ratings and Characteristic Curves (TA = 25°C unless otherwise noted) Fig. 8 ­ Line Transient Response Fig. 7 ­ Load Transient Response Output Voltage (mV, AC) 0.05 0 VIN = 5V CIN = 1µF COUT = 10µF (Tantalum) VOUT = 3.3V -0.05 -0.1 Input Voltage (V) Load Current Output Voltage (V, AC) 0.1 1.5A 0.1A 0 40 80 120 160 50 0 -50 COUT = 10µF (Tantalum) VOUT = 3.3V -100 7.0 6.0 0 200 10 20 30 40 50 Time (µs) Time (µs) Ordering Information GS1085Cxx xxx Output Voltage Default: Adj. 1.8: 1.8V 2.5: 2.5V 3.3: 3.3V Package Type T: TO-220 M: TO-263 E: TO-252 Document Number 74821 24-May-02 www.vishay.com 5 GS1085 GS1085 Vishay formerly General Semiconductor Case Outlines TO-220 TO-252 (DPAK) 6.73 6.35 10.66 9.66 2.38 2.19 3.42 2.54 0.58 0.46 5.46 5.21 4.82 3.56 4.08 3.54 1.39 0.51 6.85 5.85 16.51 14.23 5.59 5.33 2 1 10.42 9.40 3 6.35 Max. 0.88 0.64 0.51 (min.) 14.73 12.70 2.28 (TYP.) 1.27 1.02 2.79 2.29 TO-263 10.29 4.06 (with plating) 1.14 0.31 2.92 2.04 4.83 9.65 1.77 1.15 1.01 (with plating) 0.38 1.40 Dimensions in millimeters 1.14 1.40 (max.) 9.66 8.63 15.88 1 2 3 14.60 1.40 2.80 1.14 2.28 0.7 (max.) 1.00 0.50 2.54 (TYP.) www.vishay.com 6 Document Number 74821 24-May-02