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부품번호 | MIC2077 기능 |
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기능 | Quad USB Power Distribution Switch | ||
제조업체 | Micrel Semiconductor | ||
로고 | |||
전체 17 페이지수
MIC2027/2077
Quad USB Power Distribution Switch
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 shutdown 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 are available in 16-pin narrow (150 mil)
and wide (300 mil) SOIC packages.
Data sheets and support documentation can be found on
Micrel’s web site at www.micrel.com.
Features
• 150mΩ 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
Typical Application
®
UL Recognized Component
4-Port Self-Powered Hub
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
September 2006
1 M9999-091506
Micrel, Inc.
Absolute Maximum Ratings(1)
Supply Voltage (VIN) ............................................ –0.3V +6V
Fault Flag Voltage (VFLG)................................................+6V
Fault Flag Current (IFLG) ..............................................25mA
Output Voltage (VOUT) ....................................................+6V
Output Current (IOUT) .................................Internally Limited
Enable Input (IEN) .......................................... –0.3V VIN +3V
Lead Temperature (soldering, 5sec.)......................... 260°C
Storage Temperature (TS).........................–65°C to +150°C
EDS Rating(3).................................................................. 1kV
MIC2027/2077
Operating Ratings(2)
Supply voltage (VIN) ..................................... +2.7V to +5.5V
Ambient Temperature (TA) .......................... –40°C to +85°C
Junction Thermal Range(TJ) ..................... Internally Limited
Thermal Resistance
[300 mil] Wide SOIC (θJA)................................120°C/W
[150 mil] SOIC (θJA).........................................112°C/W
DIP (θJA) ..........................................................130°C/W
Electrical Characteristics
VIN = +5V; TA = 25°C, bold values indicate –40°C< TA < +85°C, unless noted.
Symbol
IDD
Parameter
Supply Current
Condition
MIC20x7-1, VENA–D ≤ 0.8V
(switch off), OUT = open
MIC20x7-2, VENA–D ≥ 2.4V
(switch off), OUT = open
MIC20x7-1, VENA–D ≥ 2.4V
(switch on), OUT = open
MIC20x7-2, VENA–D ≤ 0.8V
(switch on), OUT = open
VEN Enable Input Threshold
low-to-high transition
high-to-low transition
Enable Input Hysteresis
IEN Enable Input Current
VEN = 0V to 5.5V
Enable Input Capacitance
RDS(on)
Switch Resistance
VIN = 5V, IOUT = 500mA
Output Leakage Current
VIN = 3.3V, IOUT = 500mA
MIC20x7-1, VENx ≤ 0.8V;
MIC20x7-2, VENx ≥ 2.4V, (output off)
Output Current in
Latched Thermal Shutdown
MIC2077 (per Latch Output)
(during thermal shutdown state)
tON Output Turn-On Delay
RL = 10Ω, CL = 1µF, see “Timing Diagrams”
tR
Output Turn-On Rise Time
RL = 10Ω, CL = 1µF, see “Timing Diagrams”
tOFF Output Turnoff Delay
RL = 10Ω, CL = 1µF, see “Timing Diagrams”
tF Output Turnoff Fall Time RL = 10Ω, CL = 1µF, see “Timing Diagrams”
ILIMIT
Short-Circuit Output Current
VOUT = 0V, enabled into short-circuit
Current-Limit Threshold
ramped load applied to output
Short-Circuit Response Time
VOUT = 0V to IOUT = ILIMIT
(short applied to output)
tD
Overcurrent Flag Response
VIN = 5V, apply VOUT = 0V until FLG low
Delay
VIN = 3.3V, apply VOUT = 0V until FLG low
Min Typ Max Units
1.5 10
µA
1.5 10
µA
200 320
µA
200 320
µA
1.7 2.4
0.8 1.45
250
–1 0.01
1
1
100 150
110 180
10
V
V
mV
µA
pF
mΩ
mΩ
µA
50 µA
1.3 5
1.15 4.9
35 100
32 100
0.5 0.9 1.25
1.0 1.25
20
ms
ms
µs
µs
A
A
µs
1.5 3 7 ms
3 ms
September 2006
4
M9999-091506
4페이지 Micrel, Inc.
Typical Characteristics
MIC2027/2077
September 2006
7
M9999-091506
7페이지 | |||
구 성 | 총 17 페이지수 | ||
다운로드 | [ MIC2077.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
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