Overview
The LM43601PWPT is a synchronous step-down DC-DC converter produced by Texas Instruments. This regulator is designed to drive up to 1 A of load current from an input voltage ranging from 3.5 V to 36 V (with a transient tolerance of 42 V). It is packaged in a 16-pin HTSSOP (PWP) and is known for its high efficiency, output accuracy, and minimal dropout voltage. The device is part of the LM43601 family, which includes options for 0.5-A, 2-A, and 3-A load current in pin-to-pin compatible packages. The LM43601PWPT features advanced functionalities such as internal soft start, extendable soft start, and tracking options, making it versatile for various application requirements. It operates efficiently in discontinuous conduction mode and employs automatic frequency modulation at light loads, enhancing energy efficiency. The regulator requires few external components and offers a user-friendly platform for a wide range of applications.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Manufacturer | Texas Instruments | Output Voltage | 1 V to 28 V |
| Output Current | 1 A | Input Voltage, Max | 36 V |
| Number of Outputs | 1 Output | Topology | Buck |
| Mounting Style | SMD/SMT | Switching Frequency | 200 kHz to 2.2 MHz |
| Quiescent Current | 33 uA | Minimum Operating Temperature | -40 C |
| Maximum Operating Temperature | +125 C | Series | LM43601 |
| Input Voltage, Min | 3.5 V | Brand | Texas Instruments |
| Input Voltage | 3.5 V to 36 V | Moisture Sensitive | Yes |
| Operating Supply Current | 33 uA | Shutdown | Shutdown |
| Factory Pack Quantity | 250 | Supply Voltage - Min | 3.5 V |
| Type | Synchronous Step-Down DC-DC Converter |
Key Features
- Precision Enable for Custom Programming and Control: Allows for precise control over the regulator's operation.
- Soft-Start Time Extension Capability for Smooth Startup: Ensures smooth startup and reduces inrush current.
- Output Short-Circuit Protection with Hiccup Mode Recovery: Protects the device from short-circuit conditions and recovers through hiccup mode.
- Programmable Switching Frequency and Synchronization: Allows for customization of the switching frequency and synchronization with other devices.
- Power Good Flag and Internal Soft Start: Provides a power good signal and internal soft start functionality for reliable operation.
- Light Load Efficiency with Discontinuous Conduction and Automatic Frequency Modulation: Enhances efficiency at light loads by adjusting the switching frequency.
- Thermal Shutdown, VCC Undervoltage Lockout, and Cycle-by-Cycle Current Limit: Comprehensive protection features to ensure safe operation.
Applications
The LM43601PWPT is suitable for a wide range of applications due to its versatility and high performance. Some key applications include:
- Automotive Systems: The device is automotive-qualified and can handle the transient voltages and temperature ranges typical in automotive environments.
- Industrial Power Supplies: Its high efficiency and reliability make it a good choice for industrial power supply applications.
- Consumer Electronics: Suitable for use in consumer electronics where compact size and high efficiency are crucial.
- Medical Devices: Can be used in medical devices due to its high accuracy and reliability.
Q & A
- Q: What is the input voltage range of the LM43601PWPT?
A: The input voltage range is from 3.5 V to 36 V, with a transient tolerance of 42 V. - Q: What is the maximum output current of the LM43601PWPT?
A: The maximum output current is 1 A. - Q: What is the switching frequency range of the LM43601PWPT?
A: The switching frequency range is from 200 kHz to 2.2 MHz. - Q: Does the LM43601PWPT have built-in protection features?
A: Yes, it includes thermal shutdown, VCC undervoltage lockout, cycle-by-cycle current limit, and output short-circuit protection with hiccup mode recovery. - Q: Is the LM43601PWPT RoHS compliant?
A: Yes, the LM43601PWPT is RoHS compliant. - Q: What is the operating temperature range of the LM43601PWPT?
A: The operating temperature range is from -40°C to +125°C. - Q: Can the LM43601PWPT be used in automotive applications?
A: Yes, it is automotive-qualified and suitable for use in automotive systems. - Q: How can I obtain the datasheet for the LM43601PWPT?
A: You can download the datasheet from the Texas Instruments website or through other authorized distributors like Ovaga. - Q: What is the package type of the LM43601PWPT?
A: The LM43601PWPT is packaged in a 16-pin HTSSOP (PWP). - Q: Does the LM43601PWPT support synchronization and tracking features?
A: Yes, it supports programmable switching frequency, synchronization, and tracking features.
