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Micrel Semiconductor
Micrel Semiconductor

MIC2505 Datasheet Preview

MIC2505 Datasheet

Single 2A / Dual 1A / High-Side Switches

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MIC2505 pdf
MIC2505/2506
Micrel
MIC2505/2506
Single 2A / Dual 1A / High-Side Switches
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.
Features
• Low MOSFET on resistance to 2.7V
30mtypical at 5V (MIC2505-series)
35mtypical at 3.3V (MIC2505-series)
75mtypical at 5V (each MIC2506 output)
80mtypical at 3.3V (each MIC2506 output)
• 2.7V to 7.5V input
• 110µA typical on-state supply current
• 1µA 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
(MIC2505BN/M and MIC2506BN/M only)
• 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
Typical Applications
2.7V to 7.5V
ON
OFF
Pull-up
Resistor
(100k)
FAULT
MIC2505BM
1 CTL
OUT 8
2 FLG
IN 7
3 GND OUT 6
4 GATE
IN 5
100k
Optional
Open Load
Detect Resistor
(MIC2505BN or
MIC2505BM
0.1µF
only)
Optional
Output Delay
Capacitor
Pull-up
Resistors
(100k each)
A ON
A OFF
FAULT A
FAULT B
B ON
B OFF
2.7V to 7.5V
MIC2506BM
1 CTL A OUT A 8
2 FLG A
IN 7
3 FLG B GND 6
4 CTL B OUT B 5
100k 100k
0.1µF
Optional
Open Load
Detect Resistors
Single and Dual Switch/Circuit Breakers with Open-Load Detection and Fault Output
April 1998
1 MIC2505/2506



Micrel Semiconductor
Micrel Semiconductor

MIC2505 Datasheet Preview

MIC2505 Datasheet

Single 2A / Dual 1A / High-Side Switches

No Preview Available !

MIC2505 pdf
MIC2505/2506
Ordering Information
Part Number Control/Enable
Single-Switch
MIC2505BM
Active-High
MIC2505BN
Active-High
MIC2505-1BM Active-High
MIC2505-1BN Active-High
MIC2505-2BM Active-Low
MIC2505-2BN Active-Low
Dual Switch
MIC2506BM
Active-High
MIC2506BN
Active-High
Open-Load Detect
Yes
Yes
No
No
No
No
Yes
Yes
Temperature Range
–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
Package
8-pin SOIC
8-pin DIP
8-pin SOIC
8-pin DIP
8-pin SOIC
8-pin DIP
8-pin SOIC
8-pin DIP
Micrel
Pin Configuration
MIC2505/-1/-2
CTL 1
8 OUT
FLG 2
7 IN
GND 3
6 OUT
GATE 4
5 IN
MIC2505/-1/-2
(CTL A) 1
(FLG A) 2
(GATE A) 4
LOGIC,
CHARGE
PUMP
6, 8 (OUT)
5, 7 (IN)
3 (GND)
8-Pin SOIC (M)
8-Pin DIP (N)
CTL A 1
FLG A 2
FLG B 3
CTL B 4
MIC2506
8 OUT A
7 IN
6 GND
5 OUT B
(CTL A) 1
(FLG A) 2
(FLG B) 3
(CTL B) 4
MIC2506
LOGIC,
CHARGE
PUMP
LOGIC,
CHARGE
PUMP
6 (GND)
8 (OUT A)
7 (IN)
5 (OUT B)
8-Pin SOIC (M)
8-Pin DIP (N)
MIC2505/2506
2
April 1998


Part Number MIC2505
Description Single 2A / Dual 1A / High-Side Switches
Maker Micrel Semiconductor
Total Page 12 Pages
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