MAX14737 datasheet(10/12 Pages) MAXIM

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Applications Information

IN Bypass Capacitor

The MAX14736/MAX14737 do not require an input

capacitor, though it is generally recommended to bypass

IN to GND with a 0.1µF ceramic capacitor as close as

possible to the device. If the power source has significant

inductance due to long lead length or other non-ideal

layout conditions, the device clamps the overshoot due to

the LC tank circuit.

Output Capacitor

The soft-start functionality included in the MAX14736/

MAX14737 limits inrush current for 30ms (typ), allowing

the devices to charge capacitances over 1000µF.

ESD Test Conditions

ESD performance depends on a number of conditions.

The MAX14736/MAX14737 are specified for ±2kV (HBM)

typical ESD resistance on all pins and ±15kV (HBM) typi-

cal ESD resistance on IN with a 0.1µF bypass capacitor.

HBM ESD Protection

Figure 2 shows the Human Body Model, while Figure 3

shows the current waveform it generates when discharged

into low impedance. This model consists of a 100pF

capacitor charged to the ESD voltage of interest, which is

then discharged into the device through a 1.5kΩ resistor.

Figure 2. Human Body ESD Test Model

tr = 0.7ns TO 1ns

30ns

60ns

100%

90%

10%

CHARGE-CURRENT-

LIMIT RESISTOR

DISCHARGE

RESISTANCE

STORAGE

CAPACITOR

100pF

1MΩ

1500Ω

HIGH-

VOLTAGE

SOURCE

DEVICE

UNDER

TEST

Figure 3. Human Body Current Waveform

MAX14736/MAX14737

Precision, Ultra-Fast, Low Supply Current,

Bidirectional Overvoltage Protector

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