MIC2310
The MIC2310 is a single-channel, positive voltage, constant power-limit hot swap controller designed to provide for the safe insertion and removal of pc boards into fixed, rack, and pedestal mid- or back-planes using few external components. In addition, the MIC2310 employs a patent-pending, output load power-limiting technique where the current limit is inversely proportional to the output load voltage, such that the power product will not exceed the programmed power limit any longer than the externally programmed primary overcurrent period. The MIC2310 is ideally suited to address the power-limiting and timing requirements per the UL60950 specification for 240-VA applications. The MIC2310 incorporates high-side controller circuitry for an external N-channel MOSFET for which the MOSFET drain current rate of change is userprogrammable via an external capacitor. The MIC2310 employs dual-speed, dual-level overcurrent fault protection. The primary overcurrent detector response time is programmable via an external current sense resistor and the secondary overcurrent detector is 2-bit userprogrammable and exhibits a very fast (default) response to faults to ensure that the system power supplies are protected against catastrophic load current and shortcircuit faults.
Additionally, an analog output (voltage) signal is provided that is proportional to the steady-state load current to allow monitoring of the system’s power. A PWRGD signal is provided to indicate a valid output voltage that can be used to enable a DC-DC power module.
Features- Provides safe PCB insertion and removal from live +12V backplanes
- Patent-pending, adaptive circuit breaker threshold control
- Maintains constant power product at output
- Power-limit product (VA) is externally programmable for various power applications
- Dual-level, dual-speed overcurrent detection/protection
- Programmable primary detector response time
- Fast (<1µs) secondary detector response time to short circuit conditions
User-programmable threshold settings via (2) digital inputs
- User-programmable threshold settings via (2) digital inputs
- User-programmable threshold settings via (2) digital inputs
- Steady-state load current monitoring
- Programmable inrush current slew-rate control
- Electronic circuit breaker functions after fault
- Latch off
- Automatic retry
- Programmable input undervoltage lockout and overvoltage protection
- Fault reporting:
- Open-drain 'Power-is-Good' output
- Open-drain 'I_FLT' output signaling for all current faults
- Shorted RSENSE and Damaged MOSFET detection (D-G and D-S shorts)
| Parameter|
Parameter Name
Value
| Value | |
Product type
Low Voltage (<16V)
|
Low Voltage (<16V)
| |
Latch off
Yes
|
Yes
| |
Auto Retry
Yes
|
Yes
| |
FAULT
Yes
|
Yes
| |
# of PWRGD
1 Active High
|
1 Active High
| |
Θja (C/W)
83.8
|
83.8
|
|
Documents
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RoHS Information
| PartNumber | DeviceWeight | ShippingWeight | LeadCount | PackageType | PackageWidth | SolderComposition | JEDECIndicator | RoHS | ChinaEFUP |
|---|
| MIC2310-2ZTS | | 0.247742 | 24 | TSSOP | 4.4mm | Matte Tin | e3 |  |  |
| MIC2310-2ZTS-TR | | 0.218520 | 24 | TSSOP | 4.4mm | Matte Tin | e3 | | |
| MIC2310-1ZTS-TR | | 0.218520 | 24 | TSSOP | 4.4mm | Matte Tin | e3 | | |
| MIC2310-1ZTS | | 0.247742 | 24 | TSSOP | 4.4mm | Matte Tin | e3 | | |
