Allicdata Part #: | LM25069PMME-1/NOPBTR-ND |
Manufacturer Part#: |
LM25069PMME-1/NOPB |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Texas Instruments |
Short Description: | IC CTLR POS HOTSWAP LATCH 10MSOPHot Swap Controlle... |
More Detail: | N/A |
DataSheet: | LM25069PMME-1/NOPB Datasheet/PDF |
Quantity: | 27500 |
Lead Free Status / RoHS Status: | Lead free / RoHS Compliant |
Moisture Sensitivity Level (MSL): | 1 (Unlimited) |
Series: | LM25069 |
Packaging: | Tape & Reel (TR) |
Lead Free Status / RoHS Status: | -- |
Function: | -- |
Part Status: | Active |
Sensing Method: | -- |
Moisture Sensitivity Level (MSL): | -- |
Accuracy: | -- |
Type: | Hot Swap Controller |
Number of Channels: | 1 |
Voltage - Input: | -- |
Current - Output: | -- |
Internal Switch(s): | No |
Applications: | General Purpose |
Features: | Latched Fault |
Programmable Features: | Current Limit, Fault Timeout, OVP, UVLO |
Voltage - Supply: | 2.9 V ~ 17 V |
Current - Output (Max): | -- |
Operating Temperature: | -40°C ~ 85°C |
Mounting Type: | Surface Mount |
Current - Supply: | 1.6mA |
Package / Case: | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) |
Supplier Device Package: | 10-VSSOP |
Feature Pins: | OVLO, PGD, TIMER, (UVLO, EN) |
Base Part Number: | LM25069 |
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1. DESCRIPTION
The LM25069PMME-1/NOPB positive hot swap controller provides intelligent control of the power supply voltage to the load during insertion and removal of circuit cards from a live system backplane or other "hot" power sources. The LM25069 provides in-rush current control to limit system voltage droop and transients. The current limit and power dissipation in the external series pass N- Channel MOSFET are programmable, ensuring operation within the Safe Operating Area (SOA). The POWER GOOD output indicates when the output voltage is within 1.3V of the input voltage. The input under-voltage and over-voltage lockout levels and hysteresis are programmable, as well as the initial insertion delay time and fault detection time. The LM25069-1 latches off after a fault detection, while the LM25069-2 automatically restarts at a fixed duty cycle. The LM25069 is available in a 10 pin VSSOP package.
2. FEATURES
1. Operating R ange: +2.9V to +17V
2. In-rush Current Limit for Safe Board Insertion into Live Power Sources
3. Programmable Maximum Power Dissipation in the External Pass Device
4. Adjustable Current Limit
5. Circuit Breaker Function for Severe Over-Current Events
6. Internal High Side Charge Pump and Gate Driver for External N-channel MOSFET
7. Adjustable Under-Voltage Lockout (UVLO) and Hysteresis
8. Adjustable Over-Voltage Lockout (OVLO) and Hysteresis
9. Initial Insertion Timer Allows Ringing and Transients to Subside After System Connection
10. Programmable Fault Timer Avoids Nuisance Trips
11. Active High Open Drain POWER GOOD Output
12. Available in Latched Fault and Automatic Restart Versions
3. APPLICATIONS
1. Server Backplane Systems
2. Base Station Power Distribution Systems
3. Solid State Circuit Breaker
4. PIN CONFIGURATION
5. PIN DESCRIPTIONS
6. FUNCTIONAL DESCRIPTION
The LM25069 is designed to control the in-rush current to the load upon insertion of a circuit card into a live backplane or other "hot" power source, thereby limiting the voltage sag on the backplane’s supply voltage, and the dV/dt of the voltage applied to the load. Effects on other circuits in the system are minimized, preventing possible unintended resets. A controlled shutdown when the circuit card is removed can also be implemented using the LM25069. In addition to a programmable current limit, the LM25069 monitors and limits the maximum power dissipation in the series pass device to maintain operation within the device Safe Operating Area (SOA). Either current limiting or power limiting for an extended period of time results in the shutdown of the series pass device. In this event, the LM25069-1 latches off until the circuit is re-enabled by external control, while the LM25069-2 automatically restarts with defined timing. The circuit breaker function quickly switches off the series pass device upon detection of a severe over-current condition. The Power Good (PGD) output pin indicates when the output voltage is within 1.3V of the system input voltage (VSYS). Programmable under-voltage lock-out (UVLO) and over-voltage lock-out (OVLO) circuits enable the LM25069 when the system input voltage is between the desired thresholds.
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