SPX3940 SIPEX [Sipex Corporation], SPX3940 Datasheet
SPX3940
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SPX3940 Summary of contents
Page 1
... Power PC TM Supplies The SPX3940 is a 1A, accurate voltage regulators with a low drop out voltage of 280mV(typical) at 1A. These regulators are specifically designed for low voltage applications that require a low dropout voltage and a fast transient response. They are fully fault protected against over-current, reverse battery, and positive and negative voltage transients. The SPX3940 is offered in 3-pin SOT-223, TO-220 & ...
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... IN OUT 18 1.2 OUT 2.2 400 260 150 =4.3V for a 3.3V regulator. Employ pulse-testing procedures to minimize temperature rise. IN SPX3940 1A Low Dropout Voltage Regulator 2 MAX MIN MAX UNITS SP3940 (2%) 1.818 1.764 1.836 1.845 1.737 1.863 2.525 2.450 2.550 2.563 2.412 2.588 3.333 3 ...
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... Figure 3. Load Regulation 100 3.3V Device 10µ 1.25 1.5 -40 -20 Figure 5. Ground Current vs Input Voltage SPX3940 1A Low Dropout Voltage Regulator 3 BLOCK DIAGRAM OUT R1 R2 GND 3.3V Device IL=4.3mA CL=10µF 0.25 0.5 0.75 1 1.25 1.5 IL (A) 3.3V Device 10µ 100 ...
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... Device 500mA 10µ 100 120 -40 Figure 11. Ground Current vs Temperature in Dropout at I =750mA LOAD SPX3940 1A Low Dropout Voltage Regulator 4 3.3V Device CL = 10µF 0.25 0.5 0.75 1 1.25 IL (A) 3.3V Device 10mA CL = 10µF - 100 120 Temperature (°C) 3 ...
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... Figure 15. Dropout Voltage vs Temperature 1.5mA LOAD 2.00 1.90 1.80 1.70 1.60 1.50 1.40 1.30 3.3V Device V = 3.2V 1. 750mA 1. 10µF 1.00 100 120 -40 - 16V Figure 17. Enable Threshold vs Temperature EN SPX3940 1A Low Dropout Voltage Regulator 5 3.3V Device 10µ 100 120 Temperature (°C) 3.3V Device 10µ 100 120 Temperature (°C) 3.3V Device ...
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... A tantalum capacitor is recommended if a faster load transient response is needed. If the power source has a high AC impedance, a 0.1µF ceramic capacitor between input & ground is recommended. Minimum Load Current To ensure a proper behavior of the regulator under light load, a minimum load of 5mA for SPX3940 is required. Date: 5/25/04 APPLICATION INFORMATION For example, TO-220 design: ...
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... L3 Date: 5/25/ GAUGE PLANE 0º-8º .190 .010 .039 .029 .380 WITH PLATING - .420 - .625 .110 .066 .070 SPX3940 1A Low Dropout Voltage Regulator 7 PACKAGE: TO-263 SEATING PLANE See View C SEATING PLANE A1 L View BASE METAL SECTION B-B 3 PIN TO-263 ...
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... L1 L .190 .055 WITH PLATING .115 .040 .070 .024 .650 .355 .507 .420 .350 .030 .270 .250 - .161 .135 SPX3940 1A Low Dropout Voltage Regulator 8 PACKAGE: 3 PIN TO-220 A B SEATING PLANE CHAMFER OPTIONAL BASE METAL CONTACT AREA 3 PIN TO-220 ...
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... NOM MAX - 1. 0. 0.95 1.02 - 0.50 - 0.20 2.90 3.04 WITH PLATING - 2.64 1.30 1.40 0.50 0.60 - 8º SPX3940 1A Low Dropout Voltage Regulator 9 PACKAGE: 3 PIN SOT-23 SEE VIEW C VIEW A-A Gauge Plane Seating Plane L Ø L1 VIEW C A2 Seating Plane C SIDE VIEW b c SECTION B-B BASE METAL 3 PIN SOT-23 © Copyright 2004 Sipex Corporation ...
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... SPX3940U-2.5 2% SPX3940U-3.3 2% SPX3940U-5.0 2% Available in lead free packaging. To order add "-L" suffix to part number. Example: SPX3940AT-3.3/TR = standard; SPX3940AT-L-3.3/TR = lead free /TR = Tape and Reel Pack quantity is 500 for TO-263 and 2,500 for SOT-23. Corporation ANALOG EXCELLENCE Sipex Corporation Headquarters and Sales Office ...
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... SPX3940M3-3.3/TR 2% SPX3940M3-5.0 2% SPX3940M3-5.0/TR 2% Available in lead free packaging. To order add "-L" suffix to part number. Example: SPX3940AM3-3.3/TR = standard; SPX3940AM3-L-3.3/TR = lead free /TR = Tape and Reel Pack quantity is 500 for TO-263 and 2,500 for SOT-23. Corporation ANALOG EXCELLENCE Sipex Corporation Headquarters and Sales Office ...