- 您現(xiàn)在的位置：買賣IC網 > PDF目錄1944 > MAX4987AEETA+T (Maxim Integrated Products)IC CTLR OVP USB ESD PROT 8TDFN PDF資料下載
參數(shù)資料
| 型號： | MAX4987AEETA+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 8/10頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CTLR OVP USB ESD PROT 8TDFN |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 1 |
| 類型： | 過壓保護控制器 |
| 應用： | 手機、媒體播放器 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-WFDFN 裸露焊盤 |
| 供應商設備封裝： | 8-TDFN-EP（2x3） |
| 包裝： | 標準包裝 |
| 其它名稱： | MAX4987AEETA+TDKR |
Overvoltage Lockout (OVLO)
The MAX4987AE/MAX4987BE have a 6.15V (typ) over-
voltage threshold (OVLO). When VIN is greater than
VOVLO, ACOK is high impedance.
ACOK
ACOK is an active-low open-drain output that asserts
low when VUVLO < VIN < VOVLO following the 30ms
(typ) debounce period. Connect a pullup resistor from
ACOK to the logic I/O voltage of the host system.
During a short-circuit fault,
ACOK may deassert due to
VIN not being in the valid operating voltage range.
Thermal-Shutdown Protection
The MAX4987AE/MAX4987BE feature thermal-shutdown
circuitry. The internal nFET switch turns off when the
junction temperature exceeds TSHDN and immediately
goes into a fault mode. The device exits thermal shut-
down after the junction temperature cools by +40°C (typ).
Applications Information
IN Bypass Capacitor
For most applications, bypass IN to GND with a 1F
ceramic capacitor as close to the device as possible to
enable ±15kV HBM ESD protection on IN. If ±15kV HBM
ESD protection is not required, there is no capacitor
required at IN. If the power source has significant induc-
tance due to long lead length, take care to prevent over-
shoots due to the LC tank circuit and provide protection if
necessary to prevent exceeding the absolute maximum
rating on IN.
ESD Test Conditions
ESD performance depends on a number of conditions.
The MAX4987AE/MAX4987BE are specified for ±15kV
HBM ESD protection on the CD+, CD-, and IN pins
when IN is bypassed to ground with a 1F ceramic
capacitor. The CD+ and CD- inputs are also protected
against ±15kV Air Gap and ±6kV contact IEC 61000-4-
2 ESD events.
Human Body Model
Figure 3 shows the Human Body Model, and Figure 4
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, that is then discharged into the device through a
1.5kΩ resistor.
IEC 61000-4-2
The IEC 61000-4-2 standard covers ESD testing and per-
formance of finished equipment. It does not specifically
refer to integrated circuits. The MAX4987AE/ MAX4987BE
MAX4987AE/MAX4987BE
Overvoltage-Protection Controller
with USB ESD Protection
_______________________________________________________________________________________
7
nFET SWITCH
ON
nFET SWITCH
ON
SWITCH OFF
CURRENT
THROUGH
nFET SWITCH
ILIM
tOFF
tRETRY
Figure 2. Autoretry Timing Diagram
CHARGE CURRENT-
LIMIT RESISTOR
DISCHARGE
RESISTANCE
STORAGE
CAPACITOR
Cs
100pF
RC
1M
Ω
RD
1.5k
Ω
HIGH-
VOLTAGE
DC
SOURCE
DEVICE
UNDER
TEST
Figure 3. Human Body ESD Test Model
IP 100%
90%
36.8%
tRL
TIME
tDL
CURRENT WAVEFORM
PEAK-TO-PEAK RINGING
(NOT DRAWN TO SCALE)
Ir
10%
0
AMPERES
Figure 4. Human Body Current Waveform
相關PDF資料 |
PDF描述 |
|---|---|
| MAX4989ETD+T | IC CROSSPOINT SWITCH 14TDFN |
| MAX4993EVB+ | IC SWITCH DPDT 10UTQFN |
| MAX4996LETG+T | IC SWITCH TRIPLE DPDT 24TQFN |
| MAX4999ETJ+T | IC MULTIPLEXER 8X1 32TQFN |
| MAX5128ELA+T | IC POT DGTL LP 128TAP 8-UDFN |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4987AETA+T | 功能描述:電源開關 IC - 配電 Overvoltage-Protect Controller RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時間（最大值）:400 us 關閉時間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| MAX4989ETD+T | 功能描述:電源開關 IC - USB USB 2.0 2 of 4 Crosspoint Switch RoHS:否 制造商:Micrel 電源電壓-最小:2.7 V 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX4989EVKIT+ | 功能描述:交換機 IC 開發(fā)工具 MAX4989 Eval Kit RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:USB Power Switches 工具用于評估:MAX4984E 工作電源電壓:2.8 V to 5.5 V |
| MAX498CWI | 功能描述:多路器開關 IC RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關閉時間（最大值）: 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| MAX498CWI+ | 功能描述:多路器開關 IC RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關閉時間（最大值）: 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UQFN-16 |
發(fā)布緊急采購，3分鐘左右您將得到回復。