MAX34406F 查看數據表（PDF） - Maxim Integrated

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MAX34406F

Quad Current-Sense Amplifier with Overcurrent Threshold Comparators

Maxim Integrated 

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.

SHTDN Enable Input. CMOS digital input. Connect to GND to clear the latch and unconditionally

20

ENA 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.

Shutdown Output. Open-drain output. This output transitions to high impedance when any of the four

21

SHTDN 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.

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

22

CDLY capacitor connected to CDLY is discharged when ENA is low and upon VDD being applied (i.e., at power-

on reset), and also any time all OCx outputs are low (i.e., inactive). 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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