LMR33610/30/40 SIMPLE SWITCHER® Synchronous Buck Converters
LMR33610/30/40 SIMPLE SWITCHER® Synchronous Buck Converters
Texas Instruments' 1 A, 3 A, or 4 A step-down converters offer ultra-low EMI and are suitable for a variety of industrial applications
Texas Instruments' LMR33610, LMR33630, and LMR33640 SIMPLE SWITCHER regulators are easy-to-use, synchronous, step-down DC/DC converters that deliver best-in-class efficiency for rugged industrial applications. These converters can drive up to 1 A (LMR33610), 3 A (LMR33630), or 4 A (LMR33640) of load current from an input of up to 36 V. The devices provide high light-load efficiency and output accuracy in an ultra-small solution size. Features such as a power-good flag and precision enable provide flexible and easy-to-use solutions for a wide range of applications. The LMR33610/30/40 automatically fold back frequency at light-load to improve efficiency. Integration eliminates most external components and provides a pin-out designed for a simple PCB layout. Protection features include thermal shutdown, input under-voltage lockout, cycle-by-cycle current limit, and hiccup short-circuit protection.
The LMR33640, LMR33610, and LMR33630 are pin-to-pin compatible with each other. This minimizes the cost and effort associated with board layout modifications. These devices are available in an 8-pin HSOIC package. The LMR33630 is also available in a 12-pin 3 mm × 2 mm VQFN package with wettable flanks. This device is also available in an AEC-Q100-qualified version.
- Configured for rugged industrial applications:
- Input voltage range: 3.8 V to 36 V
- Output voltage range: 1 V to 24 V
- Power MOSFETs: 75 mΩ/50 mΩ RDS(ON)
- Peak-control-mode control
- Short minimum on-time: 68 ns
- Junction temperature range: -40°C to +125°C
- Low EMI and low switching noise
- Ease-of-use SOIC package
- Flexible system interface:
- Power good flag and precision enable
- Well-suited for scalable industrial power supplies:
- Pin-compatible
- Frequency: 400 kHz, 1 MHz, 1.4 MHz, and 2.1 MHz
- Integrated compensation helps reduce solution size, cost, and design complexity
- High efficiency solution:
- Peak efficiency: >95%
- Low shutdown quiescent current: 5 µA
- Low operating quiescent current: 25 µA (LMR33610/30) and 24 µA (LMR33640)
- Motor drive systems: drones, AC inverters, VF drives, and servos
- Factory and building automation systems: PLC CPU, HVAC controls, and elevator controls
- High-efficiency solutions
- Rugged industrial applications
- Flexible system interfaces
- General purpose wide VIN power supplies
LMR33610 1 A DC/DC Converters
Image | Manufacturer Part Number | Description | Frequency - Switching | Available Quantity | View Details | |
---|---|---|---|---|---|---|
LMR33610ADDAR | 36V 1A 400KHZ REGULATOR | 400kHz | 2485 - Immediate 10001 - Factory Stock | View Details | ||
LMR33610BDDAR | 36V 1A 1.4MHZ REGULATOR | 1.4MHz | 2258 - Immediate 10001 - Factory Stock | View Details |
LMR33640 4 A DC/DC Converters
Image | Manufacturer Part Number | Description | Frequency - Switching | Available Quantity | View Details | |
---|---|---|---|---|---|---|
LMR33640DDDAR | 36V 4A 1MKZ REGULATOR | 1MHz | 2262 - Immediate 10001 - Factory Stock | View Details | ||
LMR33640ADDAR | 36V 4A 400KHZ REGULATOR | 400kHz | 1679 - Immediate 10001 - Factory Stock | View Details |
LMR33630 3 A DC/DC Converters
Image | Manufacturer Part Number | Description | Available Quantity | View Details | |
---|---|---|---|---|---|
LMR33630ADDAR | IC REG BUCK ADJUSTABLE 3A 8SOPWR | 2283 - Immediate 10001 - Factory Stock | View Details | ||
LMR33630BRNXR | IC REG BUCK ADJUSTABLE 3A 12VQFN | 6312 - Immediate 10001 - Factory Stock | View Details | ||
LMR33630CRNXT | IC REG BUCK ADJUSTABLE 3A 12VQFN | 499 - Immediate 10001 - Factory Stock | View Details | ||
LMR33630BDDAR | IC REG BUCK ADJUSTABLE 3A 8SOPWR | 1556 - Immediate | View Details | ||
LMR33630ARNXR | IC REG BUCK ADJUSTABLE 3A 12VQFN | 994 - Immediate 10001 - Factory Stock | View Details | ||
LMR33630CDDAR | IC REG BUCK ADJUSTABLE 3A 8SOPWR | 557 - Immediate 6890 - Factory Stock | View Details | ||
LMR33630BRNXT | IC REG BUCK ADJUSTABLE 3A 12VQFN | 140 - Immediate 10001 - Factory Stock | View Details | ||
LMR33630CRNXR | IC REG BUCK ADJUSTABLE 3A 12VQFN | 2468 - Immediate 9072 - Factory Stock | View Details | ||
LMR33630ARNXT | IC REG BUCK ADJUSTABLE 3A 12VQFN | 504 - Immediate 8750 - Factory Stock | View Details |
Evaluation Boards
Image | Manufacturer Part Number | Description | Frequency - Switching | Available Quantity | View Details | |
---|---|---|---|---|---|---|
LMR33630CDDAEVM | EVAL BOARD FOR LMR33630 | 2.1MHz | 6 - Immediate 56 - Factory Stock | View Details | ||
LMR33630ARNXEVM | EVAL MODULE FOR LMR33630 | 400kHz | 3 - Immediate 43 - Factory Stock | View Details | ||
LMR33630ADDAEVM | EVAL BOARD FOR LMR33630 | 400kHz | 5 - Immediate 33 - Factory Stock | View Details | ||
LMR33630CRNXEVM | EVAL MODULE FOR LMR33630 | 2.1MHz | 3 - Immediate 44 - Factory Stock | View Details |