ST1S06PUR

The ST1S06xx is a step down DC-DC converter optimized for powering low-voltage digital c HDD applications and, generally, to replace t high current linear solution when the power dissipation may cause an hig ting of the application environment. It provides up to 1.5 A over an input voltage range of 2.7 V to 6 V. An hi switching frequency (1.5 MHz) allows the use tiny surface-mount components: as well as the only an i ctor and two capac. Besides, a low output ripple is guaranteed b current mode PWM topology and by the use of lo ESR SMD ceramic capacitors. The device is thermal protected and current lim.

Key features

• aanoo 2% p-down current mode PWM
• >90% Typical efficiency
• 1.5 A output current cap
• Not switching quiesc
• DS(ON) 30°C - 125°C cocdtiy capaonoio
• The constant frequency, current mode, PWM architecture and stable operation with ce capacitors results in low, predictable output ripple
• 250 mA in order
• When the output load becomes less than 250 mA, typically the switching frequency is 50 - 100 µs
• A soft start control block generating a volt ramp has been implemented to clamp the error amplifier reference voltage
• An on-chip power on reset of 50 - 100 µs ensures proper operation when switching on the power supply
• Thermal shut down protection
• Cycle-by-cycle current limning protection against shorted outputs