Overview
The LMR23630AFDDAR, produced by Texas Instruments, is a high-performance, synchronous step-down (buck) converter. This device is part of the SIMPLE SWITCHER® family and is designed to provide a highly efficient and reliable power conversion solution. It operates over a wide input voltage range of 4 V to 36 V and can deliver up to 3 A of continuous output current. The LMR23630AFDDAR features internal compensation, which simplifies the design process and reduces the number of external components required. It is available in both 8-pin HSOIC and 12-pin WSON packages, making it suitable for a variety of applications where space and efficiency are critical.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 4 to 36 | V |
| Output Current | Up to 3 | A |
| Switching Frequency | 400 kHz (fixed), adjustable from 200 kHz to 2.2 MHz with RT pin | Hz |
| Quiescent Current at No Load (PFM) | 75 | µA |
| Minimum Switch-On Time | 60 | ns |
| Package Options | 8-pin HSOIC, 12-pin WSON with PowerPAD™ | |
| Operating Junction Temperature Range | -40 to +125 | °C |
| Soft Start Time | 1 to 3 ms (SOIC), 6 ms (WSON) | ms |
Key Features
- Constant-frequency peak-current-mode control
- PFM and Forced PWM mode options at light load for high efficiency
- Frequency synchronization to an external clock (200 kHz to 2.2 MHz)
- Internal compensation for ease of use
- Power-good flag and precision enable
- Internal soft start into a prebiased load
- Output short-circuit protection with hiccup mode
- High duty-cycle operation supported
- Thermal shutdown protection
Applications
- Automotive infotainment systems: clusters, head units, heads-up displays
- USB charging applications
- General off-battery power applications
Q & A
- What is the input voltage range of the LMR23630AFDDAR?
The input voltage range is from 4 V to 36 V. - What is the maximum output current of the LMR23630AFDDAR?
The device can deliver up to 3 A of continuous output current. - What are the package options available for the LMR23630AFDDAR?
The device is available in 8-pin HSOIC and 12-pin WSON packages with PowerPAD™. - What is the switching frequency of the LMR23630AFDDAR?
The switching frequency is fixed at 400 kHz, but it can be adjusted from 200 kHz to 2.2 MHz using the RT pin. - Does the LMR23630AFDDAR support frequency synchronization?
Yes, it supports frequency synchronization to an external clock within the range of 200 kHz to 2.2 MHz. - What protection features does the LMR23630AFDDAR have?
The device features output short-circuit protection with hiccup mode and thermal shutdown protection. - What is the quiescent current at no load for the PFM option?
The quiescent current at no load for the PFM option is 75 µA. - Does the LMR23630AFDDAR have a power-good flag?
Yes, it includes a power-good flag with deglitch delay. - What is the operating junction temperature range of the LMR23630AFDDAR?
The operating junction temperature range is from -40°C to +125°C. - Is the LMR23630AFDDAR internally compensated?
Yes, the device is internally compensated, which reduces the need for external components.
