MIC2505-1BMTR Micrel Semiconductor, MIC2505-1BMTR Datasheet
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MIC2505-1BMTR
Manufacturer Part Number
MIC2505-1BMTR
Description
Manufacturer
Micrel Semiconductor
Datasheet
1.MIC2505-1BMTR.pdf
(12 pages)
Specifications of MIC2505-1BMTR
Case
SOP-8
Date_code
2002+
General Description
The MIC2505, MIC2505-1, MIC2505-2, and MIC2506 are
single and dual integrated high-side power switches that
consist of TTL compatible control/enable inputs, a charge
pump, and protected N-channel MOSFETs. The MIC2505/6
family can be used instead of separate high-side drivers and
MOSFETs in many low-voltage applications.
The MIC2505/6 family controls voltages ranging from 2.7V to
7.5V. The MIC2505-series can deliver at least 2A continuous
current while the MIC2506 can deliver at least 1A continuous
current from each output. A slow turn-on feature prevents
high inrush current when switching capacitive loads. The
internal control circuitry is powered from the same 2.7V to
7.5V. Within the device’s input range, outputs can be forced
higher than the input voltage when disabled.
Multipurpose open-drain fault flag outputs indicate overcur-
rent limiting, open-load detection (except MIC2505-1 and -2
versions), thermal shutdown, or undervoltage lockout for
each channel.
Overcurrent limiting is internally fixed and requires no exter-
nal components.
Open-load detection is active when the switch is off. When
off, a normal load pulls the output pin low. If the load is open,
an optional, external, high-value resistor pulls the output pin
high, triggering the fault flag. MIC2505-1 and -2 versions are
tailored to Universal Serial Bus (USB) applications and do not
include open-load detection.
Thermal shutdown turns off the output if the die temperature
exceeds approximately 135 C. If enabled, the switch auto-
matically restarts when the temperature falls 10 C.
Undervoltage lockout (UVLO) shuts off the output if the
supply drops below 2.3V typical and reenables the output
when the supply exceeds 2.5V typical.
Typical Applications
April 2004
MIC2505/2506
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
OFF
FAULT
ON
Resistor
Pull-up
(100k)
Single and Dual Switch/Circuit Breakers with Open-Load Detection and Fault Output
1
2
3
4
Optional
Output Delay
Capacitor
CTL
FLG
GND
GATE
MIC2505BM
OUT
OUT
IN
IN
2.7V to 7.5V
8
5
7
6
0.1µF
Detect Resistor
(MIC2505BN or
100k
MIC2505BM
Open Load
Optional
only)
FAULT A
FAULT B
A OFF
B OFF
1
A ON
B ON
(100k each)
Features
• Low MOSFET on resistance to 2.7V
• 2.7V to 7.5V input
• 110 A typical on-state supply current
• 1 A typical off-state supply current
• Output can be forced higher than input (off-state)
• Current limit
• Thermal shutdown
• 2.5V undervoltage lockout (UVLO)
• Open-load detection
• Open-drain fault flag
• 5ms (slow) turn-on and fast turnoff
• Logic-level control/enable input
Applications
• USB Power Distribution
• 3.3V and 5V power management
• PC Card card inrush limiting switch
• Hot plug-in power supplies
• Battery-charger circuits
Resistors
Pull-up
Single 2A / Dual 1A / High-Side Switches
30m typical at 5V (MIC2505-series)
35m typical at 3.3V (MIC2505-series)
75m typical at 5V (each MIC2506 output)
80m typical at 3.3V (each MIC2506 output)
(MIC2505BN/M and MIC2506BN/M only)
1
2
3
4
CTL A OUT A
FLG A
FLG B
CTL B OUT B
MIC2506BM
MIC2505/2506
GND
IN
2.7V to 7.5V
8
5
7
6
0.1µF
100k 100k
Optional
Open Load
Detect Resistors
M9999-042704
Micrel