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Product Detailed Parameters
- Description：2.2 MHZ WIDE INPUT NONSYNCHRONOU
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Transistor Driver
- Function：Step-Up, Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Boost, Flyback, SEPIC
- Number of Outputs：1
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：2.97V ~ 60V
- Frequency - Switching：100kHz ~ 2.2MHz
- Duty Cycle (Max)：93%
- Synchronous Rectifier：No
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Current Limit, Enable, Frequency Control, Power Good, Soft Start
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：14-PowerTSSOP (0.173", 4.40mm Width)
- Supplier Device Package：14-HTSSOP
- Grade：Automotive
- Qualification：AEC-Q100
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Overview
The LM51561HPWPR is a non-synchronous boost switching controller from Texas Instruments, designed for wide input voltage applications. It supports Boost, Flyback, and SEPIC topologies with a single output. The device operates at a switch frequency ranging from 100 kHz to 2.2 MHz and delivers an output current of 1.5 A. It features a maximum duty cycle of 96% and supports output voltages from 1.5 V to 300 V. The operating supply voltage ranges from 1.5 V to 40 V, with a quiescent current of 490 uA. It functions within a temperature range of -40°C to +125°C and is housed in a 14-HTSSOP package.
Feature Summary
- Supports multiple converter topologies including Boost, Flyback, and SEPIC configurations.
- Features high-frequency operation up to 2.2 MHz for compact passive component sizing.
- Includes integrated protection mechanisms such as over-current limiting and soft-start functionality.
Applications
- Wide input voltage non-synchronous boost converter designs
- Flyback power supply implementations
- SEPIC converter circuits
Procurement Notes
Verify the specific suffix HPWPR to confirm the HTSSOP-14 package and tape-and-reel packaging format. Ensure compatibility with the required operating temperature range and input voltage specifications for your application. Cross-reference the datasheet for pinout details and thermal performance characteristics before finalizing procurement decisions.
Selection Notes
Select this component when a non-synchronous solution is preferred for cost or simplicity in wide VIN applications. It is suitable for designs requiring flexible topology support beyond standard boost converters. Consider the 14-pin package size and thermal requirements relative to the 1.5 A output capability and ambient operating conditions.
Part Context
This part belongs to the LM51561 family of switching controllers, which are engineered for versatile power conversion needs. The HP variant specifically denotes the HTSSOP package option. It serves as a core control element in DC-DC conversion systems, providing precise regulation and protection features essential for reliable power management in industrial and consumer electronics.
Replacement Considerations
Check for LM51561DSSR for WSON-12 package variants or LM51561HQPWPRQ1 for automotive-grade versions with similar electrical characteristics but different qualification standards.
