2.7-V to 23-V, 5.5-A ideal diode with integrated FET and overvoltage protection
LM7310
Product details
Parameters
Package | Pins | Size
Features
- Wide operating input voltage range: 2.7 V to 23 V
- 28-V absolute maximum
- Withstands negative voltages up to -15 V
- Integrated back-to-back FETs with low On-Resistance: RON = 28.4 mΩ (typ)
- Ideal diode operation with true reverse current blocking
- Fast overvoltage protection
-
1.2-µs (typ) response time
- Adjustable overvoltage lockout (OVLO)
-
- Fast-trip response to transient overcurrents during steady state
- 500-ns (typ) response time
- Latch-off after fault
- Analog load current monitor output (IMON)
- Current range: 0.5 A to 5.5 A
- Accuracy: ±15% (max) (IOUT ≥ 1 A)
- Active high enable input with adjustable undervoltage lockout threshold (UVLO)
- Adjustable output slew rate control (dVdt)
- Overtemperature protection
- Power Good indication (PG) with adjustable threshold (PGTH)
- Small footprint: QFN 2 mm x 2 mm, 0.45-mm pitch
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Description
The LM73100 is a highly integrated circuit protection and power management solution in a small package. The device provides multiple protection modes using very few external components and is a robust defense against voltage surges, reverse polarity, reverse current and excessive inrush current.
With integrated back-to-back FETs, reverse current flow from output to input is blocked at all times, making the device well suited for power MUX/ORing applications. The device uses linear ORing based scheme to ensure almost zero DC reverse current and emulates ideal diode behavior with minimum forward voltage drop and power dissipation.
Applications with particular inrush current requirements can set the output slew rate with a single external capacitor. Loads are protected from input overvoltage conditions by cutting off the output if input exceeds an adjustable overvoltage threshold. The device also provides fast trip response to transient overcurrent events during steady state.
The device provides an accurate sense of the output load current on the analog current monitor pin.
The device is available in a 2-mm x 2-mm, 10-pin HotRod QFN package for improved thermal performance and reduced system footprint.
The device is characterized for operation over a junction temperature range of –40°C to +125°C.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | LM73100, 2.7 - 23 V, 5.5 A Integrated Ideal Diode with Input Reverse Polarity and Overvoltage Protection datasheet (Rev. A) | Dec. 15, 2020 |
User guide | LM73100 Integrated Ideal Diode Evaluation Module (Rev. A) | Dec. 14, 2020 | |
Application note | Basics of Power MUX (Rev. A) | Oct. 20, 2020 | |
Application note | Fast Role Swap, Linear ORing with TPS25947 and LM73100 in USB-Type C Systems (Rev. A) | Oct. 07, 2020 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- 2.7 V to 23 V, 5.5 A operation
- Adjustable output voltage slew rate control
- Adjustable overvoltage lockout threshold
- LED status indication for power good output
- Onboard Schottky diode at output prevents negative spike during overcurrent faults
- TVS diode for input transient protection
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
VQFN-HR (RPW) | 10 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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Support & training
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