MIC2505 Datasheet, PDF (1/24 Pages) Micrel Semiconductor – Single 2A / Dual 1A / High-Side Switches

MIC2505/6
Single 2A/Dual 1A High-Side Switches
Features
• Low MOSFET On-Resistance to 3.0V
- 30 mΩ Typical at 5V (MIC2505 Series)
- 35 mΩ Typical at 3.3V (MIC2505 Series)
- 75 mΩ Typical at 5V (Each MIC2506 Output)
- 80 mΩ Typical at 3.3V (Each MIC2506 Out-
put)
• 3.0V to 7.5V Input
• 110 µA Typical On-State Supply Current
• 1 µA 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 (MIC2505YN/M and
MIC2506YN/M Only)
• Open-Drain Fault Flag
• 5 ms (Slow) Turn-On and Fast Turn-Off
• Logic-Level Control/Enable Input
Applications
• USB Power Distribution
• 3.3V and 5V Power Management
• PC Card Inrush Limiting Switch
• Hot Plug-In Power Supplies
• Battery Charger Circuits
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
3.0V 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 3.0V 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
overcurrent 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
external 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 automatically restarts when the temperature
falls 10°C.
Undervoltage lockout (UVLO) shuts off the output if the
supply drops below 2.3V typical and re-enables the
output when the supply exceeds 2.5V typical.
 2016 Microchip Technology Inc.
DS20005579A-page 1