Overview
The LM5017SDX/NOPB is a 100-V, 600-mA constant on-time synchronous buck regulator produced by Texas Instruments. This device is designed for high-voltage applications and features integrated 100-V high-side and low-side MOSFETs, eliminating the need for external Schottky diodes. The LM5017 employs a constant on-time (COT) control scheme, which requires no loop compensation and provides excellent transient response and high step-down ratios. The regulator is available in WSON-8 and SO PowerPAD-8 plastic packages, making it suitable for a variety of industrial and telecommunications applications.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 7.5 V to 100 V |
| Output Current | 600 mA |
| Output Voltage Adjustability | From 1.225 V |
| Feedback Reference Accuracy | ±2% |
| Operating Frequency | Adjustable up to 1 MHz |
| Package Types | WSON-8, SO PowerPAD-8 |
| Thermal Shutdown | Yes |
| Undervoltage Lockout (UVLO) | Adjustable |
| Remote Shutdown | Yes |
| Peak Current Limit | Intelligent peak current limit |
Key Features
- Wide 7.5-V to 100-V input range
- Integrated 100-V high-side and low-side switches
- No Schottky diode required
- Constant on-time control with no loop compensation needed
- 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 up to 1 MHz
- Adjustable undervoltage lockout (UVLO)
- Remote shutdown and thermal shutdown
Applications
- Industrial programmable logic controllers (PLC)
- Smart power meters
- Telecom primary and secondary side bias
- Low-power isolated DC/DC (Fly-Buck™) applications
Q & A
- What is the input voltage range of the LM5017SDX/NOPB?
The input voltage range is from 7.5 V to 100 V. - What is the maximum output current of the LM5017SDX/NOPB?
The maximum output current is 600 mA. - Does the LM5017SDX/NOPB require external Schottky diodes?
No, it does not require external Schottky diodes due to its integrated high-side and low-side switches. - What is the control scheme used in the LM5017SDX/NOPB?
The device uses a constant on-time (COT) control scheme. - Is loop compensation required for the LM5017SDX/NOPB?
No, loop compensation is not required. - What are the available package types for the LM5017SDX/NOPB?
The device is available in WSON-8 and SO PowerPAD-8 packages. - Does the LM5017SDX/NOPB have thermal shutdown protection?
Yes, it includes thermal shutdown protection. - Can the output voltage of the LM5017SDX/NOPB be adjusted?
Yes, the output voltage can be adjusted from 1.225 V. - What is the precision of the feedback reference in the LM5017SDX/NOPB?
The feedback reference has a precision of ±2%. - What are some typical applications of the LM5017SDX/NOPB?
Typical applications include industrial PLCs, smart power meters, telecom bias supplies, and low-power isolated DC/DC (Fly-Buck™) applications.
