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參數(shù)資料
| 型號： | MAX3355EEUD |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | +/-15kV ESD-Protected USB On-the-Go Charge Pump and Comparators in UCSP |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14 |
| 封裝： | 4.40 MM, TSSOP-14 |
| 文件頁數(shù)： | 8/11頁 |
| 文件大?。?/td> | 228K |
| 代理商： | MAX3355EEUD |
M
OFFVBUS
Connect
OFFVBUS
to GND to disable V
BUS
and the
charge pump (Table 4). For normal V
BUS
operation,
connect
OFFVBUS
to V
L
. When
OFFVBUS
= GND, V
BUS
impedance is between 40k
to 100k
as defined in
On-
the-Go Supplement: USB 2.0, Revision 1.0.
SHDN
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
BUS
. During shutdown, if V
BUS
is exter-
nally driven above V
TH,
SHDN
(defined in the
Comparators
section), the MAX3355E sinks current from V
CC
.
Applications Information
±15kV ESD Protection
To protect the MAX3355E against ESD, ID_IN and V
BUS
have extra protection against static electricity to protect
the device up to ±15kV. For ±15kV protection on V
BUS
,
a 1μF capacitor must be connected from V
BUS
to GND
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
BUS
are
characterized for protection to the following limits:
1) ±15kV using the Human Body Model
2) ±8kV using the IEC 1000-4-2 Contact Discharge
method
3) ±15kV using the IEC 1000-4-2 Air-Gap Discharge
method
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
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
1.5k
resistor.
IEC 1000-4-2
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
±15kV ESD-Protected USB On-the-Go
Charge Pump and Comparators in UCSP
8
_______________________________________________________________________________________
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
100pF
R
C
1M
R
D
1.5k
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
I
P
100%
90%
36.8%
t
RL
TIME
t
DL
CURRENT WAVEFORM
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
Ir
10%
0
0
AMPERES
CHARGE-CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
150pF
R
50
to 100
R
D
330
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
Figure 1. Human Body ESD Test Model
Figure 2. Human Body Current Waveform
Figure 3. IEC 1000-4-2 ESD Test Model
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| MAX3355EEUD+ | 功能描述:電荷泵 USB On-the-Go Charge Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| MAX3355EEUD+T | 功能描述:電荷泵 USB On-the-Go Charge Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| MAX3355EEUD-T | 功能描述:電荷泵 RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| MAX335C/D | 功能描述:模擬開關(guān) IC Serial Controlled 8-Channel SPST Switch RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時間（最大值）: 關(guān)閉時間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16 |
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