Texas Instruments
UC3573D
UC3573D
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UC3573D Texas Instruments - Yeehing Electronics
Buck Pulse Width Modulator Stepdown Voltage Regulator
Pricing (USD)
| Quantity | Unit Price |
| 1 — 99 | 2.561 |
| 100 — 249 | 2.244 |
| 250 — 999 | 1.574 |
| 1,000 + | 0.89 |
The above prices are for reference only.
Specifications
| Manufacturer | Texas Instruments |
| Product Category | Switching Controllers |
| RoHS | Y |
| Number of Outputs | 1 Output |
| Input Voltage | 4.2 V to 35 V |
| Output Voltage | 1.5 V to 30 V |
| Output Current | 500 mA |
| Minimum Operating Temperature | 0 C |
| Maximum Operating Temperature | + 70 C |
| Mounting Style | SMD/SMT |
| Package / Case | SOIC-8 |
| Packaging | Tube |
| Series | UC3573 |
| Type | Step Down |
| Brand | Texas Instruments |
| Product Type | Switching Controllers |
| Factory Pack Quantity | 75 |
| Subcategory | PMIC - Power Management ICs |
| Unit Weight | 0.002561 oz |
For more information, please refer to datasheet
Documents
| UC3573D Datasheet |
More Information
The UC3573 is a Buck pulse width modulator which steps down and regulates a positive input voltage. The chip is optimized for use in a single inductor buck switching converter employing an external PMOS switch. The block diagram consists of 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 UC3573 includes an undervoltage lockout circuit to insure sufficient input supply voltage is present before any switching activity can occur, and a pulse-by-pulse current limit. Input current can be sensed and limited to a user determined maximum value. In addition, a sleep comparator interfaces to the UVLO circuit which turns the chip off when the input voltage is below the UVLO threshold. This reduces the supply current to only 50uA, making the UC3573 ideal for battery powered applications.
