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MAX4827ELT Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX4827ELT Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 11 page General Description The MAX4826–MAX4831 family of switches has internal current limiting to prevent host devices from being damaged due to faulty load conditions. These analog switches have a low 0.7 Ω on-resistance and operate from a +2.3V to +5.5V input voltage range. These devices are available with guaranteed 50mA and 100mA current limits, making them ideal for load- switching applications. In addition to the current-limit fault flag (FFLG), an open-drain no-load flag indicator (NOLD) notifies the system when the current through the switch is less than 10mA (MAX4826–MAX4829), or 5mA (MAX4830/MAX4831). When the switch is on and a load is connected to the port, a guaranteed blanking time of 14ms ensures that the transient voltages settle down. If, after this blanking time, the load current is greater than the current limit, the MAX4826/MAX4828/MAX4830 enter a latchoff state where the switch is turned off, and FFLG is issued to the microprocessor. The switch can be turned on again by cycling the power or ON. The MAX4827/MAX4829/MAX4831 have an autoretry feature where the switch turns off after the blanking time, and then continuously checks to see if the over- load condition is present. The current-limit fault flag (FFLG) is issued and remains low until after the fault condition is removed. The switch remains on after the overload condition disappears. The MAX4826–MAX4831 operate over the extended -40°C to +85°C temperature range, and are available in a tiny space-saving, 1mm x 1.5mm, 6-pin µDFN package. Features ♦ Guaranteed Current Limit: 50mA, 100mA ♦ Thermal Shutdown Protection ♦ Reverse-Current Protection ♦ 0.7Ω On-Resistance (MAX4826–MAX4831) ♦ 14ms Guaranteed Blanking Time ♦ Fault Flag (FFLG) ♦ No-Load Flag (NOLD) ♦ 65µA Supply Current ♦ 8µA Latchoff Current ♦ 0.01µA Shutdown Current ♦ +2.3V to +5.5V Supply Range ♦ Undervoltage Lockout ♦ Fast Current-Limit Response Time ♦ 6-Pin µDFN Package (1mm x 1.5mm) Applications GPS Systems Cell Phones Digital Still Cameras PDAs and Palmtop Devices MP3 Players 50mA/100mA Current-Limit Switches with NO-LOAD Flag in µDFN ________________________________________________________________ Maxim Integrated Products 1 Ordering Information/Selector Guide 19-3672; Rev 1; 8/09 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. PART PIN-PACKAGE MIN FULL-LOAD LIMIT (mA) MAX NO-LOAD LIMIT (mA) ON-RESISTANCE ( ) TA = +25°C MODE TOP MARK MAX4826ELT+T 6 μDFN 50 10 1 Latchoff AK MAX4827ELT+T* 6 μDFN 50 10 1 Autoretry AL MAX4828ELT+T* 6 μDFN 100 10 1 Latchoff AM MAX4829ELT+T 6 μDFN 100 10 1 Autoretry AN MAX4830ELT+T 6 μDFN 50 5 2 Latchoff AO MAX4830ELT/V+T 6 μDFN 50 5 2 Latchoff OX MAX4831ELT+T* 6 μDFN 50 5 2 Autoretry AP Note: All devices operate over the -40°C to +85°C operating range. T = Tape and reel. *Future product—contact factory for availability. /V denotes an automotive qualified part. Pin Configuration appears at end of data sheet. |
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