MAX4893BETB+T Maxim Integrated Products, MAX4893BETB+T Datasheet - Page 11

• Manufacturer Part Number: MAX4893BETB+T
• Description: IC CTLR OVP CURR LIMIT 10-TDFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX4893BETB+T

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 10-TDFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ground-connected pad as the only electrical ground
connection or ground return. Use GND (pin 6) as the
only electrical ground connection.
ESD performance depends on a number of conditions.
The MAX4881–MAX4884/MAX4893B is specified for
15kV typical ESD resistance on IN when IN is bypassed
to ground with a 1µF low-ESR ceramic capacitor.
Contact Maxim for a reliability report that documents
test setup, methodology, and results.
Figure 8 shows the Human Body Model and Figure 9
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 61000-4-2 specifica-
tion. The IEC 61000-4-2 standard covers ESD testing
and performance of finished equipment; it does not
specifically refer to integrated circuits. The
MAX4881–MAX4884/MAX4893B help users design
Figure 12. Connection to an AC-DC Adapter without a Built-In
Battery Charger
WITH BUILT-IN
4.4V ADAPTER
CHARGER
V
IO
______________________________________________________________________________________
Overvoltage Protection Controllers with
FLAGI
OV
CB
EN
IN
MAX4882/
MAX4884
GATE
GND
1.1A/0.7A
ESD Test Conditions
Human Body Model
BTA
BTB
IEC 61000-4-2
Li+
LOAD
equipment that meets Level 3 of IEC 61000-4-2, without
additional ESD-protection components.
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 10),
the ESD-withstand voltage measured to this standard is
generally lower than that measured using the Human
Body Model. Figure 11 shows the current waveform for
the ±8kV, IEC 61000-4-2, 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.
Figures 12 and 13 depict some typical connections to
the MAX4881–MAX4884/MAX4893B. Figure 12 shows a
battery charger application where the source power is
an 4.4V adapter with a built-in charger, while Figure 13
shows an application where the battery charger is
external.
TRANSISTOR COUNT: 2391
PROCESS: BiCMOS
Figure 13. Connection to an AC-DC Adapter with a Built-In
Battery Charger
Current Limit in TDFN
ADAPTER
AC-DC
5.25V
V
IO
FLAGI
OV
CB
EN
IN
MAX4893B
MAX4881/
MAX4883/
1.1A/0.9A/0.7A
Typical Operating Circuits
GATE
GND
BTA
BTB
Chip Information
CHARGER
BATTERY
LOAD
Li+
11