DESCRIPTION
The LTC®1433/LTC1434 are monolithic pulse width modulated step-down DC/DC converters. By utilizing current mode switching techniques, they provide excellent AC and DC load and line regulation. Both devices operate at a fixed frequency with The LTC1433/LTC1434 are capable of supplying up to 450mA of output current and boasts a ± 2.4% output voltage accuracy. An internal low-battery detector has the same level of accuracy as the output voltage. A power-on reset timer (POR) is included which generates a signal delayed by 65536/fCLK (300ms typ) after the output is within 5% of the regulated output voltage. Ideal for current sensitive applications, the devices draw only 470µA of quiescent current. In shutdown the devices draw a mere 15µA. To further maximize the life of the battery source, the internal P-channel MOSFET switch is turned on continuously in dropout. FEATURES
s s s s s s s s s s s s High Efficiency: Up to 93% Constant Frequency Adaptive PowerTM Operation Input Volta...
Linear Technology
