Single-Channel Power Distribution Switch MM8®
REV. 11/04
General Description The MIC2025 and MIC2075 are high-side MOSFET switches optimized for general-purpo power distribution requiring circuit protection.
The MIC2025/75 are internally current limited and have thermal shutdown that protects the device and load. The MIC2075 offers “smart” thermal shutdown that reduces cur-rent 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 ret the device output.
Both devices employ soft-start circuitry that minimizes inrush current in applications where highly capacitive loads are em-ployed. A fault status output flag is provided that is asrted during overcurrent and thermal shutdown conditions.The MIC2025/75 is available in the MM8® 8-lead MSOP and 8-lead
SOP .
Typical Application
V C C
Features
• 140mΩ maximum on-resistance • 2.7V to 5.5V operating range
• 500mA minimum continuous output current • Short-circuit protection with thermal shutdown
• Fault status flag with 3ms filter eliminates fal asr-tions
过年的感受
• Undervoltage lockout
• Rever current flow blocking (no “body diode”)• Circuit breaker mode (MIC2075) reduces power consumption
• Logic-compatible input • Soft-start circuit
• Low quiescent current
• Pin-compatible with MIC2525•
UL File # E179633
Applications
• USB peripherals
• General purpo power switching • ACPI power distribution • Notebook PCs • PDAs
•
PC card hot swap
Micrel, Inc. • 2180 Fortune Drive • San Jo, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 •
MM8 is a registered trademark of Micrel, Inc.
Pin Description
Pin Number
Pin Name
Pin Function
1 EN Switch Enable (Input): Active-high (-1) or active-low (-2).
2
FLG
Fault Flag (Output): Active-low, open-drain output. Indicates overcurrent or thermal shutdown conditions. Overcurrent condition must exceed t D in order to asrt FLG. 3 GND Ground
4 NC not internally connected
跳绳怎么跳
5 NC not internally connected
6, 8 OUT Supply (Output): Pins must be connected together.
7
IN五一高速
Supply Voltage (Input).
Pin Configuration
OUT IN OUT NC
EN
FLG GND NC
8-Lead SOIC (BM) 8-Lead MSOP (BMM)
Ordering Information
Part Number
Enable
Temperature Range
Package
Standard Pb-Free MIC2025-1BM MIC2025-1YM Active High -40°C to +85°C 8-Lead SOIC MIC2025-2BM MIC2025-2YM Active Low -40°C to +85°C 8-Lead SOIC MIC2025-1BMM MIC2025-1YMM Active High -40°C to +85°C 8-Pin MSOP MIC2025-2BMM MIC2025-2YMM Active Low -40°C to +85°C 8-Pin MSOP MIC2075-1BM MIC2075-1YM Active High -40°C to +85°C 8-Lead SOIC MIC2075-2BM MIC2075-2YM Active Low -40°C to +85°C 8-Lead SOIC MIC2075-1BMM MIC2075-1YMM Active High -40°C to +85°C 8-Pin MSOP MIC2075-2BMM语文小报
MIC2075-2YMM
Active Low
-40°C to +85°C
8-Pin MSOP
Electrical Characteristics
V IN = +5V; T A = 25°C, bold values indicate –40°C ≤ T A ≤ +85°C; unless noted
Symbol Parameter Condition Min Typ Max Units I DD Supply Current MIC20x5-1, V EN ≤ 0.8V,(switch off), 0.75 5 µA
OUT = open
MIC20x5-2, V EN ≥ 2.4V,(switch off), 0.75 5 µA
OUT = open
MIC20x5-1, V EN ≥ 2.4V,(switch on), 160 µA
OUT = open
MIC20x5-2, V EN ≤ 0.8V,(switch on), 160 µA
OUT = open
V EN Enable Input Voltage low-to-high transition 2.1 2.4 V
high-to-low transition 0.8 1.9 V Enable Input Hysteresis 200 mV I EN Enable Input Current V EN = 0V to 5.5V –10.01 1 µA
Control Input Capacitance 1 pF R DS(on)Switch Resistance V IN = 5V, I OUT = 500mA 90 140 mΩ
V IN = 3.3V, I OUT = 500mA 100 160 mΩOutput Leakage Current MIC2025/2075 (output off) 10 µA
OFF Current in Latched MIC2075 50 µA
Thermal Shutdown (during thermal shutdown state)
t ON Output Turn-On Delay R L = 10Ω, C L = 1µF, e “Timing Diagrams” 1 2.5 6ms t R Output Turn-On Ri Time R L = 10Ω, C L = 1µF, e “Timing Diagrams” 0.5 2.3 5.9ms t OFF Output Turn
off Delay R L = 10Ω, C L = 1µF, e “Timing Diagrams” 50 100 µs t F Output Turnoff Fall Time R L = 10Ω, C L = 1µF, e “Timing Diagrams” 50 100 µs I LIMIT Short-Circuit Output Current V OUT = 0V, enabled into short-circuit. 0.5 0.7 1.25 A
Current-Limit Threshold ramped load applied to output, Note 40.85 1.25 A
Short-Circuit Respon Time V OUT = 0V to I OUT = I LIMIT 24 µs
(Short applied to output)
t D Overcurrent Flag Respon V IN = 5V, apply V OUT = 0V until FLG low 1.5 3 7 ms Delay V
IN
天津大学录取分数线
= 3.3V, apply V OUT = 0V until FLG low 1.5 3 8 ms Undervoltage Lockout V IN rising 2.2 2.5 2.7 V
Threshold V
IN falling 2.0 2.3 2.5V
Absolute Maximum Ratings (Note 1)
Supply Voltage (V IN) ..........................................–0.3V to 6V Fault Flag Voltage (V FLG) . (6)
Fault Flag Current (I FLG) ............................................25mA Output Voltage (V OUT) (6)
Output Current (I OUT) ...............................Internally Limited Enable Input (I EN) .....................................–0.3V to V IN +3V Storage Temperature (T S) ........................–65°C to +150°C ESD Rating, Note 3Operating Ratings (Note 2)
Supply Voltage (V IN) ...................................+2.7V to +5.5V Ambient Temperature (T A) ..........................–40°C to +85°C Junction Temperature (T J) ........................Internally Limited Thermal Resistance
SOP (θJA) ..........................................................160°C/W MSOP(θJA) ........................................................206°C/W
Test Circuit
OUT
Timing Diagrams
V
Output Ri and Fall Times
V E V
Active-Low Switch Delay Times (MIC20x5-2)
V E V Active-High Switch Delay Times (MIC20x5-1)
Symbol Parameter Condition
Min Typ Max Units Error Flag Output I L = 10mA, V IN = 5V 8 25 Ω Resistance
I L = 10mA, V IN = 3.3V 11 40 Ω Error Flag Off Current V FLAG = 5V 10 µA Overtemperature Threshold T J increasing 140 °C
T J decreasing
120
°C
Note 1. Exceeding the absolute maximum rating may damage the device.Note 2. The device is not guaranteed to function outside its operating rating.Note 3. Devices are ESD nsitive. Handling precautions recommended.Note 4. See “Functional Characteristics: Current-Limit Respon” graph.
C U R R E N T (µA )
TEMPERATURE (°C)
S upply On-C urrent
O N -R E S I S T A N C E (m Ω)
TEMPERATURE (°C)
On-R es is tance
R E S I S T A N C E (m Ω)
INPUT VOLTAGE (V)
On-R es is tance vs.Input Voltage
R I S E T I M E (m s )TEMPERATURE (°C)
Turn-On R is e Time
C U R R E N T (µA )
INPUT VOLTAGE (V)
S upply On-C urrent vs.Input Voltage
C U R R E N T L I M I T T H R E S H O L
D (m A )
TEMPERATURE (°C)
C urrent-L imit Thres hold
纯怎么组词C U R R E N T L I M I T (m A )
TEMPERATURE (°C)
S hort-C ircuit C urrent-L imit
队名大全
球甘蓝R I S E T I M E (m s )
INPUT VOLTAGE (V)
Turn-On R is e Time vs.Input Voltage
C U R R E N T L I M I T (m A )INPUT VOLTAGE (V)
S hort-C ircuit C urrent-L imit
vs.Input Voltage
C U R R E N T L I M I T T H R E S H O L
D (m A )
INPUT VOLTAGE (V)
C urrent-L imit Thres hold
vs.Input Voltage
E N A B L E T H R E S H O L D (V )
INPUT VOLTAGE (V)
E nable Thres hold vs.Input Voltage
E N A B L E T H R E S H O L D (V )TEMPERATURE (°C)
E nable Thres hold
