UC2573DTR Texas Instruments - Yeehing Electronics

Buck Pulse Width Modulator Stepdown Voltage Regulator

Pricing (USD)

Quantity	Unit Price
1 — 99	2.355
100 — 249	2.064
250 — 999	1.447
1,000 +	0.82

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	- 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	UC2573
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

UC2573DTR 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.