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Product Detailed Parameters
- Description：65-V, 4-A BOOST OR BUCK-BOOST LE
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：DC DC Regulator
- Topology：Step-Down (Buck), Step-Up (Boost)
- Internal Switch(s)：Yes
- Number of Outputs：1
- Voltage - Supply (Min)：4.5V
- Voltage - Supply (Max)：65V
- Voltage - Output：0V ~ 63V
- Current - Output / Channel：4A
- Frequency：100kHz ~ 2.2MHz
- Dimming：Analog, PWM
- Applications：Backlight, Lighting
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount, Wettable Flank
- Package / Case：14-VDFN Exposed Pad
- Supplier Device Package：14-VSON (4.5x3)
- Grade：-
- Qualification：-
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Overview
The TPS923654DMTR is a non-synchronous boost or buck-boost LED driver IC from Texas Instruments, housed in a VSON-14 package. It features an integrated switching FET capable of delivering up to 4 A output current. The device supports a supply voltage range of 4.5 V to 65 V and provides an output voltage capability of 0 V to 63 V. Operating frequencies are programmable between 100 kHz and 2.2 MHz. It includes cycle-by-cycle over-current protection, thermal foldback, and thermal shutdown. The component operates within a temperature range of -55°C to +125°C and supports analog, flexible, hybrid, and PWM dimming methods.
Feature Summary
- Integrates a high-side switching FET with cycle-by-cycle over-current protection for compact design.
- Supports versatile topologies including boost and buck-boost configurations for various LED string voltages.
- Provides comprehensive fault management including LED open/short detection and thermal shutdown.
Applications
- General illumination lighting systems
- Automotive interior and exterior LED lighting
- Industrial LED fixtures
Procurement Notes
Verify the specific suffix 'DMTR' against official Texas Instruments documentation to confirm tape-and-reel packaging and temperature grade specifications. Ensure compatibility with required PCB footprint dimensions for the VSON-14 package. Cross-reference RoHS compliance status directly with the manufacturer's datasheet before procurement.
Selection Notes
Select this component when designing circuits requiring up to 4 A drive current with wide input voltage flexibility. Consider the programmable frequency range to optimize external inductor size and EMI performance. Evaluate thermal management requirements given the integrated FET and operating temperature range. Compare against lower-current variants if load requirements do not necessitate the full 4 A capacity.
Part Context
This part belongs to the TPS92365x series of LED drivers, designed for high-efficiency lighting applications. It shares architectural similarities with other members like the TPS923652 but offers higher current capability. The series targets applications needing robust protection features and flexible dimming control in a small form factor.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided source material. Consult Texas Instruments for potential cross-references or updated product recommendations.
