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MAX4867ELT Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX4867ELT Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 12 page General Description The MAX4864L/MAX4865L/MAX4866L/MAX4867/ MAX4865/MAX4866 overvoltage protection controllers protect low-voltage systems against high-voltage faults up to +28V, and negative voltages down to -28V. These devices drive a low-cost complementary MOSFET. If the input voltage exceeds the overvoltage threshold, these devices turn off the n-channel MOSFET to prevent dam- age to the protected components. If the input voltage drops below ground, the devices turn off the p-channel MOSFET to prevent damage to the protected compo- nents. An internal charge pump eliminates the need for external capacitors and drives the MOSFET GATEN for a simple, robust solution. The overvoltage thresholds are preset to +7.4V (MAX4864L), +6.35V (MAX4865L), +5.8V (MAX4866L), and +4.65V (MAX4867). When the input voltage drops below the undervoltage lockout (UVLO) threshold, the devices enter a low-current standby mode (8.5µA). Also in shutdown (EN set to logic-high), the current is reduced fur- ther (0.4µA). The MAX4864L/MAX4865L/MAX4866L have a +2.85V UVLO threshold, and the MAX4867 has a +2.5V UVLO threshold. The MAX4865/MAX4866 have a 4.15V UVLO threshold. In addition, a ±15kV ESD protection is provided to the input when bypassed with a 1µF capacitor to ground. All devices are offered in a small 6-pin SOT23 and a 6-pin, 2mm x 2mm µDFN package, and are specified for operation over the -40°C to +85°C temperature range. Applications Features ♦ Overvoltage Protection Up to +28V ♦ Reverse Polarity Protection Down to -28V ♦ Preset Overvoltage (OV) Trip Level (7.4V, 6.35V, 5.8V, 4.65V) ♦ Drive Low-Cost Complementary MOSFET ♦ Internal 50ms Startup Delay ♦ Internal Charge Pump ♦ 8.5µA Standby Current (In UVLO Mode) ♦ 0.4µA Shutdown Current ♦ Overvoltage Fault FLAG Indicator ♦ 6-Pin (2mm x 2mm) µDFN and 6-Pin SOT23 Packages Overvoltage Protection Controllers with Reverse Polarity Protection ________________________________________________________________ Maxim Integrated Products 1 19-3582; Rev 1; 5/06 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. Ordering Information PART PIN- PACKAGE OV TRIP LEVEL (V) TOP MARK PKG CODE MAX4864LEUT-T 6 SOT23-6 7.40 ABVO — MAX4864LELT 6 µDFN 7.40 AAE L622-1 MAX4865LEUT-T 6 SOT23-6 6.35 ABVP — MAX4865LELT 6 µDFN 6.35 AAF L622-1 MAX4866LEUT-T 6 SOT23-6 5.80 ABVQ — MAX4866LELT 6 µDFN 5.80 AAG L622-1 MAX4867EUT-T 6 SOT23-6 4.65 ABVN — MAX4867ELT 6 µDFN 4.65 AAD L622-1 Functional Diagram appears at end of data sheet. Note: All devices are specified over the -40°C to +85°C operating range. ADAPTER (-28V TO +28V) OUTPUT VIO IN FLAG GATEN 1 µF GND EN GATEP MAX4864L MAX4865L MAX4866L MAX4867 PN Typical Operating Circuit Pin Configurations GND GATEN FLAG 16 EN 5 GATEP IN MAX4864L MAX4865L MAX4866L MAX4867 SOT23 TOP VIEW 2 34 FLAG EN IN GATEN GATEP GND MAX4864L MAX4865L MAX4866L MAX4867 µDFN 1 2 3 6 5 4 Cell Phones Digital Still Cameras PDAs and Palmtop Devices MP3 Players |
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