S9V11F3S5 Voltage Regulator

The S9V11F3S5 switching step-up/step-down regulator efficiently produces a fixed 3.3 V (default) or 5 V (selectable) output whether it is higher or lower than the input voltage, which can range from 2 V to 16 V. (Note: minimum start-up voltage is 3 V, but it operates to 2 V after that.) The compact (0.5? × 0.6?) module can supply a typical output current of up to 1.5 A when the input voltage is close to the output voltage.

Features:

• Input voltage: 2 V to 16 V (note: this regulator requires 3 V to start, but it can operate down to 2 V after startup)
• Fixed 3.3 V output with +5/-3% accuracy (can be changed to 5 V using the SEL pin)
• Typical maximum continuous output current: 1.5 A (when input voltage is close to the output; the Typical efficiency and output current section below shows how the achievable continuous output current depends on the input and output voltages)
• Power-good indicator can be used to tell when the regulator has reached and is maintaining its target output voltage
• Power-saving feature maintains high efficiency at low currents (quiescent current is less than 1 mA while enabled and approximately 7 µA per volt on VIN when regulator is disabled)
• Integrated over-temperature and short-circuit protection
• Small size: 12.7 × 15.3 × 4.3 mm

Specifications:

• Minimum operating voltage: 2 V
• Maximum operating voltage: 16 V
• Maximum output current: 1.5 A
• Output voltage: 3.3 V
• Reverse voltage protection?: N
• Maximum quiescent current: 1 mA