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MAX34406HETG+T Datasheet(PDF) 6 Page - Maxim Integrated Products |
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MAX34406HETG+T Datasheet(HTML) 6 Page - Maxim Integrated Products |
6 / 11 page ����������������������������������������������������������������� Maxim Integrated Products 6 MAX34406 Quad Current-Sense Amplifier with Overcurrent Threshold Comparators Pin Description (continued) PIN NAME FUNCTION 14 IN3- External Sense Resistor Load-Side Connection for Amplifier 3 15 OUT3 Output Voltage from Amplifier 3 Proportional to VSENSE. This output is clamped at 6V. 16 OUT4 Output Voltage from Amplifier 4 Proportional to VSENSE. This output is clamped at 6V. 17 IN4- External Sense Resistor Load-Side Connection for Amplifier 4 18 IN4+ External Sense Resistor Power-Side Connection for Amplifier 4. Bias at this pin also provides the supply voltage for amplifier 4. This pin can be left open circuit if not needed. 19 VDD Supply Voltage for Reference, Comparators, and Logic. A +2.7V to +5.5V supply. This pin should be decoupled to GND with a 100nF ceramic capacitor. 20 ENA SHTDN Enable Input. CMOS digital input. Connect to GND to clear the latch and unconditionally deassert (force low) the SHTDN output. Connect to VDD to enable normal latch operation of the SHTDN output. ENA should be toggled low once VDD reaches nominal operating voltage. 21 SHTDN Shutdown Output. Open-drain output. This output transitions to high impedance when any of the four overcurrent comparator outputs (OC1 to OC4) are asserted (high impedance) as long as the ENA pin is high. Toggling the ENA pin allows SHTDN to reset to logic-low. 22 CDLY Shutdown Delay Capacitor. A capacitor (CCDLY) from this pin to GND delays the transition of the SHTDN pin. The delay time can be calculated by the following formula: tDLY = CCDLY x (VDD/10FA). The capacitor connected to CDLY is discharged when ENA is low and also upon VDD being applied (i.e., at power-on reset). A shunt resistor, RBLEED, with a max of 22mI, is required to be connected in parallel with the CCDLY capacitor. If the shutdown delay is not required, this pin can be left unconnected. 24 GND Ground Reference — EP Exposed Pad. Connect to ground or leave unconnected. |
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