5-V to 75-V, 400-uA IQ automotive ideal diode controller
Product details
Parameters
Package | Pins | Size
Features
- Available in Standard and AEC-Q100 Qualified Versions LM5050Q0MK-1 (up to 150°C TJ) and LM5050Q1MK-1 (up to 125°C TJ)
- Functional safety capable
- Documentation available to aid functional safety system design
- Wide Operating Input Voltage Range, VIN: 1 V to 75 V (VBIAS required for VIN < 5 V)
- 100-V Transient Capability
- Charge Pump Gate Driver for External N-Channel MOSFET
- Fast 50-ns Response to Current Reversal
- 2-A Peak Gate Turnoff Current
- Minimum VDS Clamp for Faster Turnoff
- Package: SOT-6 (Thin SOT-23-6)
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Description
The LM5050-1/-Q1 High Side OR-ing FET Controller operates in conjunction with an external MOSFET as an ideal diode rectifier when connected in series with a power source. This ORing controller allows MOSFETs to replace diode rectifiers in power distribution networks thus reducing both power loss and voltage drops.
The LM5050-1/-Q1 controller provides charge pump gate drive for an external N-Channel MOSFET and a fast response comparator to turn off the FET when current flows in the reverse direction. The LM5050-1/-Q1 can connect power supplies ranging from 5 V to 75 V and can withstand transients up to 100 V.
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Technical documentation
= Top documentation for this product selected by TI
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | LM5050-1, LM5050-1-Q1 High-Side OR-ing FET Controller datasheet (Rev. F) | Dec. 23, 2019 |
| Application notes | LM5050-1-Q1 Functional Safety FIT Rate and Failure Mode Distribution | Dec. 03, 2019 | |
| White papers | 11 Ways to Protect Your Power Path white paper | Jul. 03, 2019 | |
| Technical articles | How can a load switch extend your device’s battery life? | Mar. 20, 2018 | |
| Technical articles | How and why you should use load switches for power sequencing | Feb. 06, 2018 | |
| Technical articles | How to use load switches and eFuses in your set-top box design | Nov. 23, 2017 | |
| Technical articles | Don’t leave it floating! Power off your outputs with quick output discharge | Dec. 09, 2016 | |
| User guides | AN-2087 LM5050-1EVAL Evaluation Board (Rev. A) | May 06, 2013 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
LM5050MK-1EVAL
Description
The LM5050-1 evaluation board is designed to demonstrate the capabilities of the LM5050-1 OR-ing Diode Controller. One high side N-channel power MOSFET is used. The evaluation board is designed to highlight applications with a small solution size.
Features
Contents:
- Assembled LM5050MK-1EVAL Board
Design tools & simulation
SNVM010.ZIP (347 KB) - PSpice Model
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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
- (...)
Reference designs
PMP10655 — PMP10655 is a dual-output synchronous buck converter reference design using the LM5140 controller IC. The reference design accepts an input voltage between 6Vin and 18Vin and is capable of supplying a maximum of 8A of continuous current (14A Peak) to the load, per output. Vout1 and Vout2 maintain (...)
Design files
-
download PMP10655 BOM.pdf (103KB) -
download PMP10655 Assembly Drawing.pdf (165KB) -
download PMP10655 PCB.pdf (1396KB) -
download PMP10655 CAD Files.zip (1372KB) -
download PMP10655 Gerber.zip (414KB)
TIDA-00992 — Reverse polarity is standard protection required in an automotive environment. When battery cables are detached and reconnected there is a probability of connecting the wires to wrong terminals of the battery. This mistake could damage the components in Electronic Control Units (ECU). To avoid (...)
Design files
-
download TIDA-00992 BOM.pdf (60KB) -
download TIDA-00992 Assembly Drawing.pdf (72KB) -
download TIDA-00992 PCB.pdf (585KB) -
download TIDA-00992 CAD Files.zip (451KB) -
download TIDA-00992 Gerber.zip (379KB)
PMP7936 — PMP7936 is a boost converter capable of 138W output power and targeted for automotive appli-cations. This design uses the LM5122 synchronous boost current-mode PWM controller. The circuit will start at a minimum input of 6.5V and has an operating input voltage range of 4.5V to 42V. The output is (...)
Design files
-
download PMP7936 PCB.pdf (541KB) -
download PMP7936 BOM LM5050-1.pdf (88KB) -
download PMP7936 BOM LM5122.pdf (93KB)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| SOT-23-THIN (DDC) | 6 | View options |
Ordering & quality
Support & training
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