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SG3524NE4
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Product Detailed Parameters
- Description：40V, DUAL 0.05A 450KHZ PWM CONTR
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Output Type：Transistor Driver
- Function：Step-Up/Step-Down
- Output Configuration：Positive
- Topology：Flyback, 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, Enable, Frequency Control
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Through Hole
- Package / Case：16-DIP (0.300", 7.62mm)
- Supplier Device Package：16-PDIP
- Grade：-
- Qualification：-
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Overview
The SG3524NE4 is a monolithic regulating pulse width modulator manufactured by Texas Instruments. It integrates complete PWM power control circuitry, including an on-chip reference, error amplifier, programmable oscillator, pulse-steering flip-flop, and two uncommitted output transistors. Designed for voltage-mode control, it supports switching frequencies up to 300 kHz with a maximum duty cycle of 45%. The device operates within an input supply voltage range of 8 V to 40 V and features current-limiting and shutdown capabilities. It is housed in a 16-pin PDIP package.
Feature Summary
- Integrates complete PWM power control circuitry on a single monolithic chip
- Features dual alternating outputs suitable for single-ended or push-pull applications
- Includes built-in current-limiting and shut-down circuitry for protection
Applications
- Regulating power supplies
- Transformer-coupled DC-to-DC converters
- Switching regulators
Procurement Notes
Verify the specific suffix 'E4' indicates lead-free compliance and RoHS status according to the manufacturer's datasheet. Confirm the package type is PDIP-16 and ensure the operating temperature range meets application requirements. Cross-reference the ordering information with official Texas Instruments documentation to validate part availability and specifications.
Selection Notes
Select this component for fixed-frequency pulse-width modulation applications requiring integrated power control. It is suitable for designs needing dual alternating outputs for push-pull topologies. Consider the 300 kHz maximum switching frequency and 45% duty cycle limit when designing the external oscillator and feedback networks.
Part Context
The SG3524NE4 belongs to the SG3524 family of regulating pulse width modulators. This series is designed for constructing regulating power supplies, inverters, and switching regulators. The 'N' designation typically indicates a plastic DIP package, while 'E4' denotes environmental compliance features such as lead-free construction.
Replacement Considerations
Compatible alternatives include the UC3524 and other variants within the SG3524/UC3524 family. Verify pin compatibility and electrical specifications before substitution.
