XC9215 series

Synchronous Step-Down DCDC Converter

• XC9215 Synch. PWM only
• XC9216 Synch. PWM/PFM Auto Switching
• XC9217 Synch. PWM only or PWM/PFM Auto Switching

The XC9215/16/17 series are synchronous DC/DC converters with a built in 0.5 ohm P-channel driver transistor and a 0.6 ohm N-channel switching transistor. Outputs of 600mA can be achieved at efficiencies over 90%. The XC9215 operates in synchronous PWM mode, the XC9216 is PWM/PFM auto switching and the switching operation of the XC9217 can be manually controlled between synchronous PWM and synchronous PFM/PWM switching using the CE/MODE pin.

Operating voltage is 2.0V~6.0V and output voltage range is 0.9V~4.0V (0.1V steps). Oscillation frequency is selectable from either 600kHz or 1.2MHz. The low output ripple performance makes the XC9215/16/17 series an ideal choice for noise sensitive RF applications such as Bluetooth and next generation mobile phones.

Features:

• Input Voltage: 2.0V ~ 6.0V
• Output Voltage: 0.9V ~ 4.0V
• Output Current: ~ 600mA
• Oscillator Frequency: 600kHz, 1.2MHz
• Compatible with ceramic capacitors
• Built-in soft start circuit
• Built-in current limiter circuit (constant current + latching)
• Stand-by Current: 0.5uA (max)
• Small SOT23-5 or USP-6B chip scale package (2.0mm x 1.8mm x 0.65mm)

Packages: SOT-25 , USP-6B