Description
UC2572DTR Texas Instruments - Yeehing Electronics
Negative output Flyback pulse width modulator
Pricing (USD)
Quantity | Unit Price |
1 — 99 | 3.708 |
100 — 249 | 3.023 |
250 — 999 | 2.376 |
1,000 + | 0.77 |
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 Current | 500 mA |
Minimum Operating Temperature | - 40 C |
Maximum Operating Temperature | + 85 C |
Mounting Style | SMD/SMT |
Package / Case | SOIC-8 |
Packaging | Reel |
Operating Temperature Range | - 40 C to + 85 C |
Series | UC2572 |
Type | DC/DC Controller (External Switch) |
Brand | Texas Instruments |
Operating Supply Current | 9 mA |
Product Type | Switching Controllers |
Factory Pack Quantity | 2500 |
Subcategory | PMIC - Power Management ICs |
Unit Weight | 0.002561 oz |
For more information, please refer to datasheet
Documents
UC2572DTR Datasheet |
More Information
The UC3572 is a negative output flyback pulse width modulator which converts a positive input voltage to a regulated negative output voltage. The chip is optimized for use in a single inductor negative flyback 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 UC3572 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. Output current can be sensed and limited to a user determined maximum value. The UVLO circuit turns the chip off when the input voltage is below the UVLO threshold. In addition, a sleep comparator interfaces to the UVLO circuit to turn the chip off. This reduces the supply current to only 50uA, making the UC3572 ideal for battery powered applications.