Products - Step-Down

HiSAT-COT 1.5A Synchronous Step-Down DC/DC Converter

The XC9289 series, is a step-down synchronous DC/DC converter with a built-in P-channel driver FET and a N-channel driver FET. The IC provides a high efficiency (Typ 92%) and a stable power supply with output currents of up to 1.5A achievable using only a coil and two ceramic capacitors connected externally. Quiescent current is only 15μA.

Minimum operating voltage is 2.5V and output voltage is fixed within a range of 0.8V to 3.6V in 50mV steps (accuracy: ± 2.0%). Switching frequency is selectable from either 1.2MHz or 3MHz.

The soft start and current control functions are internally optimized. Soft-start is 0.3ms typically. The MODE pin allows for the selection of either fixed PWM control or PWM/PFM auto switching control.

During standby, all circuits are shutdown to reduce current consumption to as low as 1.0μA max.

Available in a tiny LGA-8B01 package (1.2 x 1.4 x 0.3mm).
 

Features: 

• Input Voltage: 2.5V ~ 5.5V
• Output Voltage: 0.8V ~ 3.6V
• Output Current: 1.5A
• Oscillator Frequency: 1.2MHz, 3MHz
• Built-in Soft Start Circuit
• Built-in Current Limiter Circuit
• LGA-8B01 (1.2 x 1.4 x 0.3mm) Package
• Only 3 External Components Required