Description
The LM5145RGYT is a synchronous buck controller from Texas Instruments, designed for step-down voltage regulation in industrial automation, automotive, telecommunications, and other power management systems. It features a wide input voltage range of 6V to 75V, adjustable output voltage from 0.8V to 60V, and a switching frequency range of 100kHz to 1MHz. The device offers versatile synchronous buck DC/DC controller capabilities with precision enable input and open-drain PGOOD indicator for sequencing and control. It also features inherent protection features such as hiccup-mode overcurrent protection, thermal shutdown protection, and UVLO protection.
Features
The LM5145RGYT features include:
- Versatile synchronous buck DC/DC controller
- Wide input voltage range of 6V to 75V
- Adjustable output voltage from 0.8V to 60V
- Fast switching frequency from 100kHz to 1MHz
- SYNC In and SYNC Out capability for synchronization
- Selectable diode emulation or FPWM
- 7.5V gate drivers with adaptive dead-time control
- Low-side soft start for prebiased start-up
- Fast line and load transient response
- Inherent protection features, including hiccup-mode overcurrent protection, input UVLO, VCC and gate-drive UVLO protection, thermal shutdown protection, and precision enable input and open-drain PGOOD indicator.
Package
The package type of LM5145RGYT is VQFN (20-pin, RGYT).
Pinout
The LM5145RGYT has a 20-pin VQFN package with wettable flanks. The pin function is not explicitly listed in the product description, but it can be found in the datasheet. According to the datasheet, the pin functions are:
- VIN (Pin 1): Input voltage
- GND (Pin 2-4): Ground pins
- SB (Pin 5): Sense input
- SYNCIN (Pin 6), SYNCOUT (Pin 7): Synchronization inputs and outputs
- VCC (Pin 8): Power supply voltage
- EN (Pin 9): Enable input
- PGOOD (Pin 10): Power good output
- UVLO (Pin 11,12): Under-voltage lockout pins
- GDRVOUTP (Pin 13), GDRVOUTN (Pin 14): Gate drivers output pins
- FB (Pin 15), COMP (Pin 16): Feedback and compensation pins
- SoftStart (Pin 17): Soft-start pin
- TSD (Pin 18-19): Thermal shutdown pins
- VSS (Pin 20): Ground for MOSFET driver gate
Please refer to the datasheet for detailed information.
Manufacturer
The manufacturer of the LM5145RGYT is Texas Instruments, a leading global semiconductor design and manufacturing company that specializes in analog and embedded processing technologies.
Applications
According to the product information, the LM5145RGYT synchronous buck controller is designed for applications requiring step-down voltage regulation in various industries, including:
- Industrial automation
- Automotive
- Telecommunications
- Power management systems
It's particularly suitable for compact and efficient power supply solutions.
Equivalent
Based on the specification, Texas Instruments themselves do not provide direct equivalents to LM5145RGYT as it is a specialized product.
However, similar synchronous buck controller ICs with adjustable output voltage and wide input range include:
- Texas Instruments' own LP8731Q1EER (similar features but in a slightly different package) or
- Other manufacturers such as STMicroelectronics', On Semiconductor's, or Power Integrations' products that have varying degrees of similarity to LM5145RGYT.
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Heavy, i hope reliable. Thank you.