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SG3524NSR
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Product Detailed Parameters
- Description：IC REG CTRLR MULT TOPOLOGY 16SO
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Transistor Driver
- Function：Step-Up, Step-Down, Step-Up/Step-Down
- Output Configuration：Positive, Isolation Capable
- Topology：Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull
- Number of Outputs：2
- Output Phases：1
- Voltage - Supply (Vcc/Vdd)：8V ~ 40V
- Frequency - Switching：450kHz
- Duty Cycle (Max)：45%
- Synchronous Rectifier：No
- Clock Sync：No
- Serial Interfaces：-
- Control Features：Current Limit, Frequency Control
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：16-SOIC (0.209", 5.30mm Width)
- Supplier Device Package：16-SO
- Grade：-
- Qualification：-
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Overview
The SG3524NSR is a regulating pulse width modulator manufactured by Texas Instruments, housed in a 16-pin SOIC surface-mount package. It operates within a supply voltage range of 8 V to 40 V and supports switching frequencies up to 450 kHz. The device features two outputs with a maximum duty cycle of 45% and an output current capability of 50 mA. Its reference voltage ranges from 4.6 V to 5.4 V, with rise and fall times of 200 ns and 100 ns respectively. It functions across an operating temperature range of 0°C to +70°C.
Feature Summary
- Supports multiple converter topologies including Boost, Buck, Flyback, Forward, and Push-Pull configurations.
- Integrates dual alternating outputs suitable for single-ended or push-pull applications.
- Includes built-in current-limiting and shutdown circuitry for enhanced protection.
Applications
- Regulating power supplies
- Inverters
- Switching regulators
Procurement Notes
Verify the specific suffix 'NSR' confirms the SOIC-16 surface-mount package and tape-and-reel packaging format. Confirm RoHS compliance status and ensure the component meets the required industrial temperature range specifications for your design environment before finalizing procurement.
Selection Notes
Select this component when a dual-output PWM controller is required for transformer-coupled DC-to-DC converters. It is suitable for applications needing fixed-frequency pulse-width modulation techniques. Ensure the design accommodates the 45% maximum duty cycle limitation and utilizes external components for oscillator programming.
Part Context
This part belongs to the SG3524 family of complete PWM power control circuits. It integrates essential functions such as an on-chip reference, error amplifier, programmable oscillator, and pulse-steering flip-flop onto a single monolithic chip, simplifying the construction of complex power management systems.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pin compatibility and electrical specifications against alternative controllers if cross-referencing is necessary.
FAQ
What is the maximum duty cycle for the SG3524NSR?
The maximum duty cycle is limited to 45%.
Can the SG3524NSR be used for push-pull applications?
Yes, the dual alternating outputs allow for either single-ended or push-pull applications.
