MIC2075 Datasheet PDF - Micrel Semiconductor

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MIC2075
Micrel Semiconductor

Part Number MIC2075
Description Single-Channel Power Distribution Switch MM8
Page 14 Pages


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MIC2025/2075
MIC2025/2075
Micrel, Inc.
Single-Channel Power Distribution Switch MM8®
General Description
The MIC2025 and MIC2075 are high-side MOSFET switches
optimized for general-purpose 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
reset 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 asserted
during overcurrent and thermal shutdown conditions.
The MIC2025/75 is available in the MM8® 8‑lead MSOP
and 8‑lead SOP.
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 false asser-
tions
• Undervoltage lockout
• Reverse 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 purpose power switching
• ACPI power distribution
• Notebook PCs
• PDAs
• PC card hot swap
Typical Application
10k
Logic Controller
VIN ON/OFF
1µF OVERCURRENT
GND
VCC
2.7V to 5.5V
MIC2025/75
EN
FLG
GND
NC
OUT
IN
OUT
NC
Load
0.1µF
UL Recognized Component
MM8 is a registered trademark of Micrel, Inc.
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
June 2010
1 MIC2025/2075



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MIC2025/2075
Ordering Information
Part Number
Standard
Pb-Free
MIC2025-1BM MIC2025-1YM
MIC2025-2BM MIC2025-2YM
MIC2025-1BMM MIC2025-1YMM
MIC2025-2BMM MIC2025-2YMM
MIC2075-1BM MIC2075-1YM
MIC2075-2BM MIC2075-2YM
MIC2075-1BMM MIC2075-1YMM
MIC2075-2BMM MIC2075-2YMM
Enable
Active High
Active Low
Active High
Active Low
Active High
Active Low
Active High
Active Low
Temperature Range
Package
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
8-Lead SOIC
8-Lead SOIC
8-Pin MSOP
8-Pin MSOP
8-Lead SOIC
8-Lead SOIC
8-Pin MSOP
8-Pin MSOP
Micrel, Inc.
Pin Configuration
MIC2025/75
EN 1
8 OUT
FLG 2
7 IN
GND 3
6 OUT
NC 4
5 NC
8-Lead SOIC (BM)
8-Lead MSOP (BMM)
Pin Description
Pin Number
1
2
3
4
5
6, 8
7
Pin Name
EN
FLG
GND
NC
NC
OUT
IN
Pin Function
Switch Enable (Input): Active-high (-1) or active-low (-2).
Fault Flag (Output): Active-low, open-drain output. Indicates overcurrent or
thermal shutdown conditions. Overcurrent condition must exceed tD in order
to assert FLG.
Ground
not internally connected
not internally connected
Supply (Output): Pins must be connected together.
Supply Voltage (Input).
MIC2025/2075
2
June 2010



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MIC2025/2075
Absolute Maximum Ratings (Note 1)
Supply Voltage (VIN)..........................................–0.3V to 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 to VIN +3V
Storage Temperature (TS)......................... –65°C to +150°C
ESD Rating, Note 3
Micrel, Inc.
Operating Ratings (Note 2)
Supply Voltage (VIN) ................................... +2.7V to +5.5V
Ambient Temperature (TA)........................... –40°C to +85°C
Junction Temperature (TJ)......................... Internally Limited
Thermal Resistance
SOP (θJA)........................................................... 160°C/W
MSOP(θJA)......................................................... 206°C/W
Electrical Characteristics
VIN = +5V; TA = 25°C, bold values indicate –40°C ≤ TA ≤ +85°C; unless noted
Symbol
Parameter
Condition
Min Typ Max
IDD Supply Current
MIC20x5-1, VEN ≤ 0.8V, (switch off),
OUT = open
0.75 5
MIC20x5-2, VEN ≥ 2.4V, (switch off),
OUT = open
0.75 5
MIC20x5-1, VEN ≥ 2.4V, (switch on),
OUT = open
160
MIC20x5-2, VEN ≤ 0.8V, (switch on),
OUT = open
160
VEN
Enable Input Voltage
low-to-high transition
high-to-low transition
0.8
2.1 2.4
1.9
Enable Input Hysteresis
200
IEN Enable Input Current
VEN = 0V to 5.5V
–1 0.01 1
Control Input Capacitance
1
RDS(on)
Switch Resistance
Output Leakage Current
VIN = 5V, IOUT = 500mA
90
VIN = 3.3V, IOUT = 500mA
100
MIC2025/2075 (output off)
140
160
10
OFF Current in Latched
MIC2075
50
Thermal Shutdown
(during thermal shutdown state)
tON
tR
tOFF
tF
ILIMIT
Output Turn-On Delay
Output Turn-On Rise Time
Output Turnoff Delay
Output Turnoff Fall Time
Short-Circuit Output Current
Current-Limit Threshold
RL = 10Ω, CL = 1µF, see “Timing Diagrams”
1
RL = 10Ω, CL = 1µF, see “Timing Diagrams” 0.5
RL = 10Ω, CL = 1µF, see “Timing Diagrams”
RL = 10Ω, CL = 1µF, see “Timing Diagrams”
VOUT = 0V, enabled into short-circuit.
0.5
ramped load applied to output, Note 4
0.60
2.5
2.3
50
50
0.7
0.85
6
5.9
100
100
1.25
1.25
Short-Circuit Response Time
VOUT = 0V to IOUT = ILIMIT
(Short applied to output)
24
tD
Overcurrent Flag Response
Delay
VIN = 5V, apply VOUT = 0V until FLG low
1.5 3
VIN = 3.3V, apply VOUT = 0V until FLG low 1.5 3
7
8
Undervoltage Lockout
Threshold
VIN rising
VIN falling
2.2 2.5 2.7
2.0 2.3 2.5
Units
µA
µA
µA
µA
V
V
mV
µA
pF
µA
µA
ms
ms
µs
µs
A
A
µs
ms
ms
V
V
June 2010
3 MIC2025/2075



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MIC2025/2075
Micrel, Inc.
Symbol
Parameter
Condition
Min Typ Max
Error Flag Output
Resistance
Error Flag Off Current
Overtemperature Threshold
IL = 10mA, VIN = 5V
8 25
IL = 10mA, VIN = 3.3V
11 40
VFLAG = 5V
10
TJ increasing
140
TJ decreasing
120
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 sensitive. Handling precautions recommended.
Note 4. See “Functional Characteristics: Current-Limit Response” graph.
Units
Ω
Ω
µA
°C
°C
Test Circuit
Device
IOUT
Under
Test
OUT
RL
CL
VOUT
Timing Diagrams
VOUT
tR
90%
90%
10% 10%
Output Rise and Fall Times
tF
VE N
VO U T
50%
tON
90%
tO F F
10%
Active-Low Switch Delay Times (MIC20x5-2)
MIC2025/2075
VEN 50%
VO U T
tON
90%
tO F F
10%
Active-High Switch Delay Times (MIC20x5-1)
4
June 2010



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