Overview
The LMR23630AFDDA is a SIMPLE SWITCHER® synchronous step-down DC-DC converter produced by Texas Instruments. This device operates from a wide input voltage range of 4 V to 36 V and delivers up to 3 A of continuous output current. It is designed for ease of use, featuring internal compensation, which minimizes the need for external components and simplifies the design process. The LMR23630AFDDA is suitable for various industrial applications, including power conditioning from unregulated sources, due to its robust features and high efficiency.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 4 to 36 | V |
| Output Current | 3 | A |
| Switching Frequency | 400 kHz (fixed), adjustable up to 2.2 MHz | kHz |
| Quiescent Current (PFM mode) | 75 µA | µA |
| Shutdown Current | 2 µA | µA |
| Operating Temperature Range | -40 to 125 | °C |
| Package Type | HSOIC (8-pin) with PowerPAD™ | |
| Minimum Switch On-Time | 60 ns | ns |
| Thermal Shutdown Threshold | 162 to 178 | °C |
Key Features
- Integrated synchronous rectification
- Current-mode control with peak-current-mode control for simple control-loop compensation and cycle-by-cycle current limiting
- Internal compensation for ease of use, minimizing external components
- PFM and forced PWM mode options for high efficiency and low output voltage ripple
- Frequency synchronization to an external clock within the range of 200 kHz to 2.2 MHz
- Soft start into a prebiased load
- High duty-cycle operation supported
- Precision enable input for simplified regulator control and system power sequencing
- Output short-circuit protection with hiccup mode and thermal protection
- Pin-to-pin compatible packages in 1-A (LMR23610) and 2.5-A (LMR23625) load-current options
Applications
- Factory and building automation systems: PLC CPU, HVAC control, elevator control
- Asset tracking
- General purpose wide VIN regulation
- Battery-powered systems due to low quiescent and shutdown currents
Q & A
- What is the input voltage range of the LMR23630AFDDA?
The input voltage range is from 4 V to 36 V.
- What is the maximum output current of the LMR23630AFDDA?
The maximum output current is 3 A.
- What are the switching frequency options for the LMR23630AFDDA?
The device has a fixed switching frequency of 400 kHz and an adjustable frequency option up to 2.2 MHz.
- What is the quiescent current in PFM mode?
The quiescent current in PFM mode is 75 µA.
- What protection features does the LMR23630AFDDA have?
The device includes cycle-by-cycle current limit, hiccup-mode short-circuit protection, and thermal shutdown.
- What is the operating temperature range of the LMR23630AFDDA?
The operating temperature range is from -40°C to 125°C.
- What package types are available for the LMR23630AFDDA?
The device is available in an 8-pin HSOIC package with PowerPAD™ and a 12-pin WSON package with PowerPAD™.
- Does the LMR23630AFDDA support frequency synchronization?
- What is the minimum switch on-time for the LMR23630AFDDA?
The minimum switch on-time is 60 ns.
- Is the LMR23630AFDDA suitable for battery-powered systems?
