Features: • Low MOSFET on resistance to 2.7V
30mW typical at 5V (MIC2505-series)
35mW typical at 3.3V (MIC2505-series)
75mW typical at 5V (each MIC2506 output)
80mW typical at 3.3V (each MIC2506 output)
• 2.7V to 7.5V input
• 110mA typical on-state supply current
• 1mA 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 inputApplication• USB Power Distribution
• 3.3V and 5V power management
• PC Card card inrush limiting switch
• Hot plug-in power supplies
• Battery-charger circuitsPinout
SpecificationsSupply Voltage (VIN) ..................................................... 8.0V
Fault Flag Voltage (VFLG) ............................................... 7.5V
Fault Flag Current (IFLG) ...............................................50mA
Output Voltage (VOUT) .................................................. 7.5V
Output Current (IOUT) ................................ Internally Limited
Gate Voltage (VGATE) ............................................ VIN + 15V
Control Input (VCTL) ......................................... 0.3V to 15V
Storage Temperature (TA) .................... 65°C to +150°C
Lead Temperature (Soldering 5 sec.) ........................ 260°C
Supply Voltage (VIN) ................................... +2.7V to +7.5V
Ambient Operating Temperature (TA) ....... 40°C to +85°C
Thermal Resistance
SOIC (qJA) ............................................................. 160°C/W
DIP (qJA) ................................................................105°C/W
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 of MIC2505, MIC2505-1, MIC2505-2, and MIC2506 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 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 MIC2505, MIC2505-1, MIC2505-2, and MIC2506 are 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 reenables the output when the supply exceeds 2.5V typical.
MIC2505 Data Sheet
