MAX4995A Maxim, MAX4995A Datasheet
MAX4995A
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MAX4995A Summary of contents
Page 1
... Each device in the family handles an overcurrent event differently depending on the option selected. The MAX4995A/MAX4995AF/MAX4995AL go into an autoretry mode, the MAX4995B latches off the switch, and the MAX4995C places the device in a continuous current-limit mode. Additional safety features include ...
Page 2
... For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial. 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 ...
Page 3
... Switch from on to off 3.3V OFF Figure 1 (Note 3.3V SETI MAX4995A/AL/B/C 578k , output high and t LIM then short-circuit MAX4995AF applied t (Note 5) BLANK t MAX4995A/MAX4995AF/MAX4995AL (Note 5) RETRY ) t SS 90% ) and Turn-Off Time (t SS MIN TYP MAX 0.4 1 120 = 1μF, OUT 120 5 1.5 10 16.3 22.6 320 723.2 ...
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... I OUT (100mA/div) 140 120 100 NORMALIZED CURRENT LIMIT vs. TEMPERATURE MAX4995AL -40 -25 - 110 125 TEMPERATURE (°C) CURRENT-LIMIT RESPONSE (MAX4995AF) MAX4995A toc04 SUDDEN SHORT APPLIED AT OUTPUT V OUT (2V/div) I OUT (10A/div) 10μs/div QUIESCENT SUPPLY CURRENT vs. SUPPLY VOLTAGE MAX4995A 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5 ...
Page 5
... TEMPERATURE (°C) _______________________________________________________________________________________ 50mA to 600mA Programmable Current-Limit Switches Typical Operating Characteristics (continued) = 94.2kΩ +25°C, unless otherwise noted.) SETI A SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE 2.50 MAX4995AL 2.25 2.00 1.75 1.50 1. 1.00 0.75 0. 3.3V IN 0.25 0 -40 -25 - 110 TEMPERATURE (°C) LATCHOFF CURRENT vs ...
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... 140 210 280 350 420 490 560 630 V (mV) DROP SWITCH TURN-OFF TIME RESPONSE MAX4995A toc17 V ON (5V/div) V OUT (2V/div) 200μs/div SWITCH DROPOUT VOLTAGE vs. TEMPERATURE MAX4995A I = 100mA LOAD -40 -25 -10 5 ...
Page 7
... MAX4995A/MAX4995AF MAX4995AL/MAX4995B MAX4995C FLAG (ON)* GND SETI UTQFN (1.4mm × × 1.8mm FOR THE MAX4995AL ONLY. **EXPOSED PAD. CONNECT EP TO GND. PIN (UTQFN) PIN (TDFN-EP) MAX4995AL MAX4995_ MAX4995AL — 4 — 3 — ...
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... MAX4995AL MAX4995_ MAX4995AL — — — MAX4995A/MAX4995AF/ MAX4995AL/MAX4995B/ MAX4995C IN UVLO N.C. SOFT-START ON (ON FOR THE MAX4995AL ONLY. 8 _______________________________________________________________________________________ Pin Description (continued) PIN (SOT23) MAX4995_ MAX4995AL MAX4995_ 7 — — — — — THERMAL SHUTDOWN BUFFER BANDGAP CURRENT ...
Page 9
... MAX4995C goes into thermal shutdown. The ON input for the MAX4995_/MAX4995AF and ON input for the MAX4995AL control the switch; see Table 1. Toggle ON for the MAX4995B to reset the fault condi- tion once the short current is detected and the device BLANK shuts down ...
Page 10
Programmable Current-Limit Switches OUT CURRENT LIMIT LOAD CURRENT FLAG Figure 2. Autoretry Fault Diagram CURRENT LIMIT LOAD CURRENT THE DEVICE GOES TO THERMAL-SHUTDOWN MODE Figure 3. Latchoff Fault Diagram FLAG is an open-drain fault indicator output and ...
Page 11
... For example, for 300mA, C LIM Due to the very fast current-limit reaction time of the MAX4995AF, a larger output capacitance might need to be connected at the output to dampen oscillation due to long wires. Choose a value large enough to ensure OUT doesn’t exceed the absolute maximum ratings. 602 ...
Page 12
... N.C. R SETI GND *( ) FOR THE MAX4995AL ONLY. For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status ...
Page 13
... Added the TDFN pin configuration drawing to the Pin Configurations section. Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. ...