XC9217 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
| Property | XC9217 | XC9217 |
| Type | Step-Down | Step-Down |
| Control | Synchronous PWM or PFM/PWM | Synchronous PWM or PFM/PWM |
| MOSFET | Internal | Internal |
| Typical Efficiency (%) | 92 | 92 |
| Min Operating Voltage (V) | 2 | 2 |
| Max Operating Voltage (V) | 6 | 6 |
| Min Output Voltage (V) | 0.9 | 0.9 |
| Max Output Voltage (V) | 4 | 4 |
| Accuracy (%) | 2 | 2 |
| Min Switching Frequency (kHz) | 600 | 1200 |
| Max Switching Frequency (kHz) | 600 | 1200 |
| Built-In Voltage Detector | No | No |
| Built-In Voltage Regulator | No | No |
| Max Output Current (mA) | 500 | 500 |
| Quiescent Current (uA) | 70 | 70 |
| Packages | SOT-25, USP-6B | SOT-25, USP-6B |
