參數(shù)資料
型號(hào)： MIC2027
廠商： Micrel Semiconductor,Inc.
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： Quad USB Power Distribution Switch(應(yīng)用于通用電源分配電路保護(hù)的四高邊MOSFET電源分配開(kāi)關(guān))
中文描述： 四USB電源配電開(kāi)關(guān)（應(yīng)用于通用電源分配電路保護(hù)的四高邊MOSFET的電源分配開(kāi)關(guān)）
文件頁(yè)數(shù)： 1/16頁(yè)
文件大?。?/td> 550K
代理商： MIC2027
June 2000
1
MIC2027/2077
MIC2027/2077
Micrel
MIC2027/2077
Quad USB Power Distribution Switch
Preliminary Information
General Description
The MIC2027 and MIC2077 are quad high-side MOSFET
switches optimized for general-purpose power distribution
requiring circuit protection. The MIC2027/77 are internally
current limited and have thermal shutdown that protects the
device and load.
The MIC2077 offers “smart” thermal shutdown that reduces
current consumption in fault modes. When a thermal shut-
down fault occurs, the output is latched off until the faulty load
is removed. Removing the load or toggling the enable input
will reset the device output.
Both devices employ soft-start circuitry that minimizes inrush
current in applications where highly capacitive loads are
employed.
A fault status output flag is asserted during overcurrent and
thermal shutdown conditions. Transient current limit faults
are internally filtered.
The MIC2027/77 is available in narrow (150 mil) and wide
(300 mil) SOP (small outline packages).
Typical Application
ON/OFF
OVERCURRENT
MIC2027
3.3V USB Controller
V
BUS
D+
D
–
GND
V
BUS
D+
D
–
GND
MIC5203-3.3
LDO Regulator
IN
OUT
GND
33
μ
F*
Ferrite
Bead
D+
D
–
V+
ENA
FLGA
ENB
FLGB
ENC
FLGC
END
FLGD
IN
IN
OUTA
OUTB
OUTC
Bold
lines indicate
0.1" wide, 1-oz. copper
high-current traces.
Downstream
USB
Port 1
500mA max.
Downstream
USB
Port 2
500mA max.
33
μ
F*
0.1
μ
F
V
BUS
D+
D
–
GND
V
BUS
D+
D
–
GND
33
μ
F*
OUTD
GND
GND
Downstream
USB
Port 3
500mA max.
Downstream
USB
Port 4
500mA max.
33
μ
F*
0.01
μ
F
0.01
μ
F
0.01
μ
F
0.01
μ
F
4.7
μ
F
1
μ
F
GND
5V
±
3%
* 33
μ
F, 16V tantalum or 100
μ
F, 10V electrolytic per port
10k
4-Port Self-Powered Hub
Features
140m
maximum on-resistance per channel
2.7V to 5.5V operating range
500mA minimum continuous current per channel
Short-circuit protection with thermal shutdown
Thermally isolated channels
Fault status flag with 3ms filter
eliminates false assertions
Undervoltage lockout
Reverse current flow blocking (no
“
body diode
”
)
Circuit breaker mode (MIC2077)
reduces power consumption
Logic-compatible inputs
Soft-start circuit
Low quiescent current
Pin-compatible with MIC2524 and MIC2527
Applications
USB peripherals
General purpose power switching
ACPI power distribution
Notebook PCs
PDAs
PC card hot swap
Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
相關(guān)PDF資料
PDF描述
MIC2077-1BM Quad USB Power Distribution Switch Preliminary Information
MIC2077-2BM Quad USB Power Distribution Switch Preliminary Information
MIC2077 Quad USB Power Distribution Switch(應(yīng)用于通用電源分配電路保護(hù)的四高邊MOSFET電源分配開(kāi)關(guān))
MIC2027-1BWM Quad USB Power Distribution Switch Preliminary Information
MIC2027-2BM Quad USB Power Distribution Switch Preliminary Information
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MIC2027_06 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Quad USB Power Distribution Switch
MIC2027-1BM 功能描述:電源開(kāi)關(guān) IC - USB Quad USB High-Side Power 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
MIC2027-1BM TR 功能描述:電源開(kāi)關(guān) IC - USB Quad USB High-Side Power 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
MIC2027-1BN 制造商:Rochester Electronics LLC 功能描述:- Bulk
MIC2027-1BWM 功能描述:電源開(kāi)關(guān) IC - USB Quad USB High-Side Power 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
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