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參數(shù)資料
| 型號： | MIC2536-2BMM |
| 廠商： | MICREL INC |
| 元件分類： | 電源管理 |
| 英文描述： | Dual USB Power Distribution Switch Preliminary Information |
| 中文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | MSOP-8 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 132K |
| 代理商： | MIC2536-2BMM |
March 2000
9
MIC2536
MIC2536
Applications Information
Supply Filtering
A 0.1
μ
F to 1
μ
F bypass capacitor from IN to GND, located at
the device, is strongly recommended to control supply tran-
sients. Without a bypass capacitor, an output short may
cause sufficient ringing on the input (from supply lead induc-
tance) to damage internal control circuitry.
Input or output transients must not exceed the absolute
maximum supply voltage (V
IN(max)
= 6V) even for a short
duration.
Micrel
MIC2536
ENA
OUTA
FLGA
FLGB
GND
ENB
OUTB
IN
0.1μF to 1μF
V
2.7V to 5.5V
Figure 1. Supply Bypassing
Enable Input
EN must be driven logic high or logic low for a clearly defined
input. Floating the input may cause unpredictable operation.
EN should not be allowed to go negative with respect to GND.
Printed Circuit Board Hot-Plug
The MIC2536 is an ideal inrush current-limiter for hot-plug
applications. Due to the integrated charge pump, the MIC2536
presents a high impedance when off and slowly becomes a
low impedance as it turns on. This
“
soft-start
”
feature effec-
tively isolates power supplies from highly capacitive loads by
reducing inrush current. Figure 2 shows how the MIC2536
may be used in a hot-plug card application.
Overcurrent Transients
The MIC2536 incorporates an internal circuit designed to
prevent FLG from being asserted due to transient inrush
current. Overcurrent events <12ms (typ.) will not assert FLG.
In case of large capacitive loads (i.e., >430
μ
F), the length of
the transient due to inrush current may exceed the delay
provided by the integrated filter. Since this inrush current
exceeds the current-limit delay specification, FLG will be
asserted during this time. To prevent the logic controller from
responding to FLG being asserted, an external RC filter, as
shown in Figure 3, can be used to filter out transient FLG
assertion. The value of the RC time constant should be
selected to match the length of the transient, minus flag t
D
.
MIC2536-2
EN
OUTA
FLGA
FLGB
GND
OUTB
IN
1
8
2
7
3
6
5
ENB
4
Adaptor Card
to "Hot"
C
BULK
GND
V
CC
0.1
Backend
Function
Figure 2. Hot-Plug Card Application
10k
V+
MIC2536
EN
OUTA
FLGA
FLGB
GND
ENB
OUTB
IN
1
8
2
7
3
6
4
5
OVERCURRENT
Logic Controller
R
C
Figure 3. Transient Filter
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC2536-2BMM TR | 功能描述:IC USB SWITCH DUAL 8-MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電源分配開關(guān) 系列:- 特色產(chǎn)品:XRP252 Switches 標(biāo)準(zhǔn)包裝:1 系列:- 類型:高端開關(guān) 輸出數(shù):2 Rds（開）:140 毫歐 內(nèi)部開關(guān):是 電流限制:1.15A 輸入電壓:1.75 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-TDFN（3x3） 包裝:Digi-Reel® 其它名稱:1016-1691-6 |
| MIC2536-2YM | 功能描述:電源開關(guān) IC - USB Dual USB Switch - Lead Free 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 |
| MIC2536-2YM TR | 功能描述:電源開關(guān) IC - USB Dual USB Switch - Lead Free 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 |
| MIC2536-2YMM | 功能描述:電源開關(guān) IC - USB Dual USB Switch - Lead Free 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 |
| MIC2536-2YMM TR | 功能描述:電源開關(guān) IC - USB Dual USB Switch - Lead Free 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 |
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