MAX14670 Datasheet, PDF (11/13 Pages) Maxim Integrated Products – Bidirectional Current-Blocking, High-Input Overvoltage Protector with Adjustable OVLO

MAX14670–MAX14673
Bidirectional Current-Blocking, High-Input
Overvoltage Protector
with Adjustable OVLO
ESD Test Conditions
ESD performance depends on a variety of conditions.
Contact Maxim for a reliability report that documents test
setup, test methodology, and test results.
Human Body Model ESD Protection
Figure 2 shows the HBM and Figure 3 shows the cur-
rent waveform it generates when discharged into a low-
impedance state. This model consists of a 100pF capaci-
tor charged to the ESD voltage of interest, which is then
discharged into the device through a 1.5kΩ resistor.
IEC 61000-4-2
The IEC 61000-4-2 standard covers ESD testing and
performance of finished equipment. However, it does not
specifically refer to integrated circuits. The major differ-
ence between tests done using the Human Body Model
and IEC 61000-4-2 is higher peak current in IEC 61000-
4-2 because series resistance is lower in the IEC 61000-
4-2 model. Hence, the ESD withstand voltage measured
to IEC 61000-4-2 is generally lower than that measured
using the Human Body Model. Figure 4 shows the IEC
61000-4-2 model, and Figure 5 shows the current wave-
form for the IEC 61000-4-2 ESD Contact Discharge test.
R_C
RD
1MΩ
1.5kΩ
CHARGE-CURRENT- DISCHARGE
LIMIT RESISTOR RESISTANCE
HIGH-
VOLTAGE
DC
SOURCE
CS
100pF
STORAGE
CAPACITOR
DEVICE
UNDER
TEST
R_C
50MΩ TO 100MΩ
RD
330Ω
CHARGE-CURRENT- DISCHARGE
LIMIT RESISTOR
RESISTANCE
HIGH-
VOLTAGE
DC
SOURCE
CS
150pF
STORAGE
CAPACITOR
DEVICE
UNDER
TEST
Figure 2. Human Body ESD Test Model
IPEAK (AMPS)
100%
90%
Ir
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
36.8%
10%
0
0 _tRL
t_DL
TIME
Figure 3. Human Body Current Waveform
Figure 4. IEC 61000-4-2 ESD Test Model
IPEAK (AMPS)
100%
90%
10%
t
tR = 0.7ns TO 1ns
30ns
60ns
Figure 5. IEC 61000-4-2 ESD Generator Current Waveform
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