CAT4201TD-G

The CAT4201TD-G belongs to CAT4201 family which is a high efficiency step-down converter optimized to drive high current LEDs. A single RSET resistor sets the full scale LED string current up to 350mA from supplies as high as 36V. A patented switching control algorithm allows highly efficient and accurate LED current regulation. CAT4201TD-G is compatible with switching frequencies of up to 1MHz, making it ideal for applications requiring small footprint and low value external inductors. The switching architecture of the CAT4201 results in extremely low internal power dissipation allowing the device to be housed in a tiny package without the need for dedicated heat sinking. Additional features include overload current protection and thermal shutdown. The device is available in the low profile 5-lead thin SOT23 package and is ideal for space constrained applications. Analog dimming and LED shutdown control is provided via a single input pin, CTRL.

The features of CAT4201TD-G can be summarized as (1)LED drive current up to 350mA; (2)compatible with 12V and 24V standard systems; (3)handles transients up to 40V; (4)single pin control and dimming function; (5)power efficiency up to 94%; (6)drives LED strings of up to 32V; (7)open and short LED protection; (8)parallel configuration for higher output current; (9)RoHS-compliant TSOT-23 5-lead package:

The absolute maximum ratings of CAT4201TD-G are (1)VBAT, SW, CTRL: -0.3 to +40 V; (2)RSET: -0.3 to +5 V; (3)switch SW peak current: 1 A; (4)storage temperature range: -65 to +160 °C; (5)junction temperature range: -40 to +150 °C; (6)lead temperature: 300 °C .