TQ8008

Vcc(Input Supply Voltage) ........................................................ 6.5V
Power Dissipation, P_D @ T_A = 25°C TSOT-23-5 ..................... 0.4W
Operating Junction Temperature Range .............. -40°C to 125°C
Operating ambient Temperature Range..................-40°C to 85°C
Lead Temperature (Soldering, 10 sec.) ............................... 260°C
Storage Temperature Range ............................... -65°C to 125°C
† Notice: Stresses above those listed under "Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.

The TQ8008 is a high-efficiency PWM step-down DC-DC converter. The device is available in an adjustable version and fixed output voltages of 1.2V and 1.8V. Supply current during operation is only 20A and drops to 1A in shutdown. The 2.5V to 5.5V input voltage range makes the TQ8008 ideally suited for single Li-Ion battery-powered applications.

The output voltage can be regulated as low as 0.6V. The TQ8008 can also run at 100% duty cycle for low dropout operation, extending battery life in portable system. Idle mode operation at light loads provides very low output ripple voltage for noise sensitive applications. Switching frequency of TQ8008 is internally set at 1.5MHz, allowing the use of small surface mount inductors and capacitors.

The switching ripple of TQ8008 is easily smoothed-out by small package filtering elements due to a fixed operation frequency of 1.5MHz. This along with small TSOT-23-5 package provides small PCB area application. Other features include soft start, lower internal reference voltage with 2% accuracy,over temperature protection, and over current protection.