MAX14529E Datasheet, PDF (8/9 Pages) Maxim Integrated Products – Overvoltage Protection with USB Charger Detection, LDO, and ESD Protection on D+/D-

Overvoltage Protection with USB Charger
Detection, LDO, and ESD Protection on D+/D-
IEC 61000-4-2
The IEC 61000-4-2 standard covers ESD testing and
performance of finished equipment. It does not specifi-
cally refer to integrated circuits. The MAX14529E/
MAX14530E are specified for ±15kV Air-Gap Discharge
and ±8kV Contact Discharge IEC 61000-4-2 on the D+
and D- pins.
The main difference 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 ESD test model (Figure 4),
the ESD-withstand voltage measured to this standard is
generally lower than that measured using the Human
Body Model. Figure 5 shows the current waveform for
the ±8kV IEC 61000-4-2 Level 4 ESD Contact
Discharge test. The Air-Gap Discharge test involves
approaching the device with a charged probe. The
Contact Discharge method connects the probe to the
device before the probe is energized.
R_C
50MΩ to 100MΩ
R_D
330Ω
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
HIGH-
VOLTAGE
DC
SOURCE
Cs
150pF
STORAGE
CAPACITOR
Figure 4. IEC 61000-4-2 ESD Test Model
DEVICE
UNDER
TEST
I
100%
90%
10%
t_R = 0.7ns to 1ns
30ns
t
60ns
Figure 5. IEC 61000-4-2 ESD Generator Current Waveform
PROCESS: BiCMOS
Chip Information
8 _______________________________________________________________________________________