MAX3355EEUD+ Maxim Integrated Products, MAX3355EEUD+ Datasheet - Page 8

• Manufacturer Part Number: MAX3355EEUD+
• Description: IC CHARGE PUMP USB OTG 14TSSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX3355EEUD+

• Applications: Charge Pump, USB
• Voltage - Input: 2.6 ~ 5.5 V
• Number Of Outputs: 1
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-TSSOP
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Connect OFFVBUS to GND to disable V
charge pump (Table 4). For normal V
connect OFFVBUS to V
impedance is between 40kΩ to 100kΩ as defined in On-
the-Go Supplement: USB 2.0, Revision 1.0.
The MAX3355E shutdown mode reduces supply current
to less than 1µA. To enter shutdown mode, connect
SHDN to GND. Shutdown mode disables the charge
pump and comparators (Table 4). While in shutdown
mode, the STATUS1 output defaults to logic 0 and STA-
TUS2 indicates V
nally driven above V
section), the MAX3355E sinks current from V
To protect the MAX3355E against ESD, ID_IN and V
±15kV ESD-Protected USB On-the-Go
Charge Pump and Comparators in UCSP
Figure 1. Human Body ESD Test Model
Figure 2. Human Body Current Waveform
8
AMPERES
VOLTAGE
SOURCE
HIGH-
_______________________________________________________________________________________
DC
I
P
36.8%
100%
90%
10%
CHARGE-CURRENT-
LIMIT RESISTOR
0
0
1MΩ
Applications Information
R
t
RL
C
100pF
BUS
C s
TH,SHDN
. During shutdown, if V
L
. When OFFVBUS = GND, V
STORAGE
CAPACITOR
CURRENT WAVEFORM
RESISTANCE
DISCHARGE
1.5kΩ
TIME
±15kV ESD Protection
R
D
(defined in the Comparators
t
DL
I r
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
BUS
BUS
CC
OFFVBUS
BUS
operation,
.
and the
is exter-
DEVICE
UNDER
SHDN
TEST
BUS
BUS
have extra protection against static electricity to protect
the device up to ±15kV. For ±15kV protection on V
a 1µF capacitor must be connected from V
as close to the device as possible. The ESD structures
withstand high ESD in all states—normal operation,
shutdown, and powered down. ESD protection can be
tested in various ways. The ID_IN input and V
characterized for protection to the following limits:
1) ±15kV using the Human Body Model
2) ±8kV using the IEC 1000-4-2 Contact Discharge
3) ±15kV using the IEC 1000-4-2 Air-Gap Discharge
ESD performance depends on a variety of conditions.
Contact Maxim for a reliability report that documents
test setup, test methodology, and test results.
Figure 1 shows the Human Body Model and Figure 2
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 interest,
which is then discharged into the test device through a
1.5kΩ resistor.
The IEC 1000-4-2 standard covers ESD testing and
performance of finished equipment. It does not specifi-
cally refer to integrated circuits. The MAX3355E helps
the user design equipment that meets Level 4 of IEC
1000-4-2, without the need for additional ESD-protec-
tion components. The major difference between tests
done using the Human Body Model and IEC 1000-4-2
is a higher peak current in IEC 1000-4-2. This occurs
because series resistance is lower in the IEC 1000-4-2
model. Hence, the ESD withstand voltage measured to
Figure 3. IEC 1000-4-2 ESD Test Model
VOLTAGE
SOURCE
method
method
HIGH-
DC
CHARGE-CURRENT-
LIMIT RESISTOR
50Ω to 100Ω
R
C
150pF
C s
STORAGE
CAPACITOR
RESISTANCE
DISCHARGE
330Ω
R
D
Human Body Model
IEC 1000-4-2
BUS
DEVICE
UNDER
BUS
TEST
to GND
BUS
are
,