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Technical content
Features
► Up to ±20V input voltage protection ► Low on-resistance - 6.5Ω typical ► Fast switching speed ► Effectively, a simple two terminal device ► No external power supplies needed
Applications
► Ethernet system protection ► Resettable fuse ► High side switch ► Data acquisition General Description The Supertex FP0030 is a 20V current limiting protection device. It is designed to protect Ethernet systems from high transient voltages. The FP0030 can be considered as a normally closed switch with a typical switch resistance of 6.5Ω. The device starts to turn off when the voltage drop across the two terminals exceeds a nominal value of ±1.5V. In the off state, the FP0030 can withstand up to ±20V across its terminals. A small amount of current, typical 800µA is allowed to flow through the device. The FP0030 can also be used as a resettable fuse to protect power lines against output short circuit conditions. The FP0030 is available in a 3-Lead SOT-23 package. Low Voltage Protection Switch Typical Application Circuit Ethernet Port FP0030 FP0030 Data Line 2 Data Line 1 3.3V 3.3V 3.3V3.3V
Supertex inc. www.supertex.com Doc.# DSFP-FP0030 A072312 Absolute Maximum Ratings Parameter Value VA-B, Differential voltage drop 0 to ±22V Maximum junction temperature +125°C Storage temperature range -65° to +150°C Power dissipation, TA@25°C 360mW1 Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied. Continuous operation of the device at the absolute rating level may affect device reliability. All voltages are referenced to device ground. Note: 1. Mounted on FR4 board, 25mm x 25mm x 1.57mm.
Ordering Information
Part Number Package Packing FP0030K1-G 3-Lead SOT-23 3000/Reel -G indicates package is RoHS compliant (‘Green’) SOT-23 (K1) SOT-23 (K1) F03W W = Code for week sealed = “Green” Packaging Product Marking Package may or may not include the following marks: Si or Sym Parameter Min Typ Max Units Conditions BVA-B Differential input voltage range from A to B ±20 - - V IA-B = ±2.0mA RSW Switch ON-resistance from A to B - 6.5 8.5 Ω IA-B = ±50mA, VA or VB = 0V VTRIP VA-B trip point to turn off - ±1.5 - V --- VOFF Switch turn off voltage - ±3.2 - V IA-B = ±1.0mA IA-B(OFF) Switch off current - ±800 ±1500 µA VA-B = ±15V IPEAK Peak switching current - ±155 - mA --- TOFF Turn off time - 30 60 ns See Figure 1 TON Turn on time - 1.0 2.0 µs See Figure 2 CSW(ON) Switch ON-capacitance from A to B or B to A - 32 - pF SW = ON CSW(OFF) Switch OFF-capacitance from A to B or B to A - 11 - pF VSW = 10V Tj Operating junction temperature -40 - +125 OC --- Electrical Characteristics (Tj = 25OC unless otherwise specified) SUB B A Pin Configuration Typical Thermal Resistance Package θja 3-Lead SOT-23 203OC/W
Supertex inc. www.supertex.com Doc.# DSFP-FP0030 A072312 Typical I-V Characteristics -VOFF -VTRIP +15V IA-B = +800µA RSW = 6.5Ω IA-B +IPEAK -IPEAK +VTRIP +VOFF -1.0mA +1.0mA IA-B = -800µA -15V Block Diagram Switch Control A B
Supertex inc. does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such appl ications unless it receives an adequate “product liability indemnification insurance agreement.” Supertex inc. does not assume responsibility for use of devices described, and limits its liability to the replacement of the devices determined defective due to workmanship. No responsibility is assumed for possible omissions and inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications refer to the Supertex inc. (website: http//www.supertex.com) ©2012 Supertex inc. All rights reserved. Unauthorized use or reproduction is prohibited. Supertex inc.
1235 Bordeaux Drive, Sunnyvale, CA 94089
Tel: 408-222-8888 www.supertex.com (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to http://www.supertex.com/packaging.html.) FP0030 Doc.# DSFP-FP0030 A072312 3-Lead TO-236AB (SOT-23) Package Outline (K1) 2.90x1.30mm body, 1.12mm height (max), 1.90mm pitch Symbol A A1 A2 b D E E1 e e1 L L1 θ Dimension (mm) 0.95 BSC 1.90 BSC 0.20† 0.54 REF JEDEC Registration TO-236, Variation AB, Issue H, Jan. 1999. † This dimension differs from the JEDEC drawing. Drawings not to scale. Supertex Doc.#: DSPD-3TO236ABK1, Version C041309. View B View A - ASide View Top View View B Gauge Plane Seating Plane 0.25 L E1 E D 1 2 e b A A Seating Plane A A2