The HT1600 is a high efficiency, fixed frequency 550KHz, current mode PWM boost DC/DC converter which could operate battery such as input voltage down to 2.5V. The converter output voltage can be adjusted to a maximum of 5.25V by an external resistor divider. Besides the converter includes a 0.08Ω N-channel MOSFET switch and 0.12Ω P-channel synchronous rectifier. So no external Schottky diode is required and could get better efficiency near 93%.
The converter is based on a fixed frequency, current mode, pulse-width-modulation PWM controller that goes automatically into PSM mode at light load.
When converter operation into discontinuous mode, the internal anti-ringing switch will reduce interference and radiated electromagnetic energy.
The HT1600 is available in a space-saving SOT-23-6 package for portable application.
• High Efficiency up to 93%
• Low RDS(ON) Integrated Power MOSFET
• NMOS 80mΩ / PMOS120mΩ
• Wide Input Voltage Range: 2.5V to 5.5V
• Fixed 550KHz Switching Frequency
• Low-Power Mode for Light Load Conditions
• ±2.0% Voltage Reference Accuracy
• PMOS Current Limit for Short Circuit Protection
• Low Quiescent Current
• Output Ripple under 200mV. (Scope Full Bandwidth)
• Fast Transient Response
• Built-In Soft Start Function
• Over-Temperature Protection with Auto Recovery
• Output Overvoltage Protection
• Space-Saving SOT-23-6 Package
