| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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30,133 pcs
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30133 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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| Clock Sync | |
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| Duty Cycle (Max) | |
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| Synchronous Rectifier | |
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| Voltage |
The UC3572DTR from Texas Instruments is a negative output flyback pulse width modulator designed for single inductor negative flyback switching converters. It is optimized for use with an external PMOS switch and converts a positive input voltage to a regulated negative output voltage.
Key features include a precision reference, an error amplifier configured for voltage mode operation, an oscillator, a PWM comparator with latching logic, and a 0.5A peak gate driver. The device incorporates an undervoltage lockout (UVLO) circuit to ensure sufficient input supply voltage before switching begins, and a pulse-by-pulse current limit. The UVLO circuit also interfaces with a sleep comparator to turn the chip off, reducing supply current to 50µA, making it suitable for battery-powered applications.
This controller operates with an input voltage range of 4.75V to 30V and a maximum frequency of 100kHz. It has a maximum duty cycle of 92% and an output current capability of up to 0.7A. The operating temperature range is 0°C to 70°C (TA).
The UC3572DTR is available in an 8-SOIC package and is designed for surface mount applications. Its function as a step-up/step-down converter with negative output configuration makes it versatile for various power management designs.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.78 | $0.78 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The UC3572DTR operates from 4.75V to 30V.
The switching frequency is 100kHz.
The operating temperature range is 0°C to 70°C.
The UC3572DTR comes in an 8-SOIC surface-mount package.
The maximum duty cycle is 92%.
The UC3572DTR uses a flyback topology.
Yes, it has a low 50µA sleep mode current.