7.5-100V Wide Vin, 300mA Constant On-Time Synchronous Buck Regulator
Product details
Parameters
Package | Pins | Size
Features
- Wide 7.5- to 100-V Input Range
- Integrated 300-mA High-Side and
Low-Side Switches - No Schottky Required
- Constant On-time Control
- No Loop Compensation Required
- Ultra-Fast Transient Response
- Nearly Constant Operating Frequency
- Intelligent Peak Current Limit
- Adjustable Output Voltage From 1.225 V
- Precision 2% Feedback Reference
- Frequency Adjustable to 1 MHz
- Adjustable Undervoltage Lockout
- Remote Shutdown
- Thermal Shutdown
- Packages:
- WSON-8
- SO PowerPAD™-8
- Create a Custom Design Using the LM5018 With the WEBENCH® Power Designer
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Description
The LM5018 is a 100-V, 300-mA synchronous step-down regulator with integrated high-side and low-side MOSFETs. The constant-on-time (COT) control scheme employed in the LM5018 device requires no loop compensation, provides excellent transient response, and enables very low step-down ratios. The on-time varies inversely with the input voltage resulting in nearly constant frequency over the input voltage range. A high-voltage startup regulator provides bias power for internal operation of the IC and for integrated gate drivers.
A peak current limit circuit protects against overload conditions. The undervoltage lockout (UVLO) circuit allows the input undervoltage threshold and hysteresis to be independently programmed. Other protection features include thermal shutdown and bias supply undervoltage lockout.
The LM5018 device is available in WSON-8 and SO PowerPAD-8 plastic packages.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- Input Voltage Range: 12V to 100V
- Output Voltage: 10V
- Output Current 300 mA
- Nominal Switching Frequency ~ 440 kHz
- Measured Efficiency: 88.4% at 300 mA and VIN = 24V
- Board Size 5.5 cm x 4.5 cm
Description
Features
- Input Voltage Range: 20V to 100V
- Primary Output Voltage: 10V
- Secondary (Isolated) Output Voltage: 9.5V
- Maximum Load Current: 300 mA
- Maximum Power Output: 1W
- Nominal Switching Frequency 750 kHz (FIN = 24V, IOUT2 = 100 mA)
- 70% Board Size 2 inch x 2 inch
Description
Features
- Wide Input Voltage Range 12-V to 60-V Three Phase GaN Inverter with 7-ARMS Output Current per Phase
- High Accuracy Phase Current Sensing Over Temperature Range From –25°C to 85°C
- Precision In-Line Phase Current Sensing
- TI BoosterPack Compatible Interface
Get started
- See the Get Started sections of (...)
Design tools & simulation
Features
- Features isolated topologies like Fly-Buck™, Fly-Buck-Boost, DCM and CCM Flyback
- Capability to design up to 6 isolated outputs
- Recommends ICs for desired application design
- Incorporates loop compensation in designs
- Compares efficiency, external component count and transformer currents for every topology (...)
Reference designs
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| SO PowerPAD (DDA) | 8 | View options |
| WSON (NGU) | 8 | 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
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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