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MAX4827 Dataheets PDF



Part Number MAX4827
Manufacturers Maxim Integrated Products
Logo Maxim Integrated Products
Description (MAX4826 - MAX4831) 50mA/100mA Current-Limit Switches
Datasheet MAX4827 DatasheetMAX4827 Datasheet (PDF)

19-3672; Rev 0; 5/05 50mA/100mA Current-Limit Switches with NO-LOAD Flag in µDFN 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 0.7Ω 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 loadswitching applications. In addition to the curr.

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19-3672; Rev 0; 5/05 50mA/100mA Current-Limit Switches with NO-LOAD Flag in µDFN 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 0.7Ω 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 loadswitching 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 latch-off 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 overload 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. www.DataSheet4U.com 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 Latch-Off 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) MAX4826–MAX4831 Applications GPS Systems Cell Phones Digital Still Cameras PDAs and Palmtop Devices MP3 Players Ordering Information/Selector Guide PART MAX4826ELT MAX4827ELT* MAX4828ELT* MAX4829ELT MAX4830ELT MAX4831ELT* PINPACKAGE 6 µDFN 6 µDFN 6 µDFN 6 µDFN 6 µDFN 6 µDFN MIN FULLLOAD LIMIT (mA) 50 50 100 100 50 50 MAX NOLOAD LIMIT (mA) 10 10 10 10 5 5 ON-RESISTANCE ( Ω) TA = +25°C 1 1 1 1 2 2 MODE Latch Off Autoretry Latch Off Autoretry Latch Off Autoretry TOP MARK AK AL AM AN AO AP PKG CODE L611-1 L611-1 L611-1 L611-1 L611-1 L611-1 Note: All devices operate over the -40°C to +85°C operating range. *Future product—contact factory for availability. Pin Configuration appears at end of data sheet. ________________________________________________________________ Maxim Integrated Products 1 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. 50mA/100mA Current-Limit Switches with NO-LOAD Flag in µDFN MAX4826–MAX4831 ABSOLUTE MAXIMUM RATINGS IN, ON, FFLG, NOLD, OUT to GND .........................-0.3V to +6V OUT Short Circuit to GND .................................Internally Limited Continuous Power Dissipation (TA = +70°C) 6-Pin µDFN (derate 2.1mW/C above +70°C) ...............168mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (VIN = +2.3V to +5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VIN = +3.3V, TA = +25°C.) (Note 1) PARAMETER Operating Voltage Quiescent Current Latch-Off Current (Note 2) Shutdown Current Shutdown Reverse Leakage Forward-Current Limit SYMBOL VIN IQ ILATCH ISHDN ISHDNRV IFWD VON = VIN, IOUT = VIN = +2.3V to +5.0V 0, switch on VIN = +5.0V to +5.5V VON = VIN = 3.3V, after an overcurrent fault (MAX4826/MAX4828/MAX4830) VON = 0, IOUT = 0mA VON = 0, VIN = +2.3V, VOUT = +5.5V (MAX4826/MAX4827/MAX4830/MAX4831) RL = 10Ω (MAX4828/MAX4829) RL = 5Ω Reverse-Current Limit IREV VOUT - VIN < 0.5V (MAX4826/MAX4827/MAX4830/MAX4831) VOUT - VIN < 0.5V (MAX4828/MAX4829) MAX4826–MAX4829 MAX4830/MAX4831 VON = VIN or GND VIN = +5.5V, VON = 0, VOUT = 0 Rising edge TA = +25°C, IOUT = 20mA On-Resistance RON TA = -40°C to +85°C, IOUT = 20mA (MAX4826–MAX4829) (MAX4830/MAX4831) (MAX4826–MAX4829) (MAX4830/MAX4831) 2.


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