MAX4840 MAXIM [Maxim Integrated Products], MAX4840 Datasheet - Page 8

• Manufacturer Part Number: MAX4840
• Description: Overvoltage Protection Controllers with Status FLAG
• Manufacturer: MAXIM [Maxim Integrated Products]

Overvoltage Protection Controllers with
Status FLAG
Table
Figure
shows the current waveform it generates when dis-
charged into a low impedance. This model consists of
a 100pF capacitor charged to the ESD voltage of inter-
est, which is then discharged into the device through a
1.5kΩ resistor.
Since January 1996, all equipment manufactured and/or
sold in the European community has been required to
meet the stringent IEC 1000-4-2 specification. The IEC
1000-4-2 standard covers ESD testing and performance
of finished equipment; it does not specifically refer to
integrated circuits. The MAX4838–MAX4841 help users
Figure 8. Human Body ESD Test Model
8
Si9936DY
Si5904DC
Si1426DH
FDC6305N
FDS8926A
FDG315N
IRF7752
IRF7303
IRF7607
VOLTAGE
SOURCE
_______________________________________________________________________________________
HIGH-
DC
PART
8 shows the Human Body Model and
1. MOSFET Suggestions
CHARGE-CURRENT-
LIMIT RESISTOR
1MΩ
R
C
100pF
C s
CONFIGURATION/
STORAGE
CAPACITOR
Single/Micro-8
Single/SC70-6
Single/SC70-6
Dual/TSSOP-8
Dual/SSOT-6
RESISTANCE
Dual/1206-8
DISCHARGE
PACKAGE
1.5kΩ
Dual/SO8
Dual/SO8
Dual/SO8
R
D
Human Body Model
IEC 1000-4-2
V
Figure
DEVICE
UNDER
DS
TEST
MAX (V)
30
30
30
20
30
30
30
30
20
9
design equipment that meets Level 3 of IEC 1000-4-2,
without additional ESD-protection components.
The main difference between tests done using the
Human Body Model and IEC 1000-4-2 is higher peak
current in IEC 1000-4-2. Because series resistance is
lower in the IEC 1000-4-2 ESD test model
the ESD-withstand voltage measured to this standard is
generally lower than that measured using the Human
Body Model.
the ±8kV IEC 1000-4-2 Level 4 ESD Contact Discharge
test. The Air-Gap test involves approaching the device
with a charger probe. The Contact Discharge method
connects the probe to the device before the probe is
energized.
Figure 9. Human Body Model Current Waveform
R
AMPERES
ON
(mΩ)
143
115
160
AT 4.5V
80
80
20
36
80
30
I
P
36.8%
100%
90%
10%
0
0
Figure
Vishay Siliconix
www.vishay.com
402-563-6866
Fairchild Semiconductor
www.fairchildsemi.com
207-775-8100
International Rectifier
www.irf.com
310-322-3331
t
RL
11 shows the current waveform for
CURRENT WAVEFORM
TIME
MANUFACTURER
t
DL
I r
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
(Figure
10),