XC9509 series
Synchronous DC/DC with Built-in VR and VD
- XC9508 - VR input from DC/DC
- XC9509 - VR input from Vin
The XC9508/09 series is a family of synchronous rectification type DC/DC converters with a built in high speed, low noise, LDO voltage regulator and an internal comparator for low voltage detection. The internal 0.6 Ohm P-channel driver transistor and N-channel switching transistor mean that efficiencies over 90% can be achieved without needing an external Schottky diode. The XC9508/09 series is designed for use with ceramic capacitors and small chip style inductors, making it ideal for space conscious applications. The XC9508/09 is available in MSOP-10 and USP-10 (chip-scale) packages.
Features:
- Input Voltage: 2.0V ~ 6.0V
- Output Voltage: 0.9V ~ 4.0V (0.1V steps)
- Switching Frequency: 300kHz, 600kHz or 1.2MHz
- Output Current: DC/DC 600mA, VR 300mA
- VR Dropout Voltage: 300mV @ 300mA (typ)
- VD Function: N-Ch open Drain
- PWM or PWM/PFM auto-switch control, selectable via MODE pin.
- Compatible with Low ESR Ceramic Capacitors
- Built-in current limit and internal soft start circuit (set to 10ms)
- Under Voltage Lock Out Circuit
Packages: MSOP-10
, USP-10
| Property | XC9509 | XC9509 | XC9509 |
| Type | Step-Down | Step-Down | Step-Down |
| Control | Synchronous PWM or PFM/PWM | Synchronous PWM or PFM/PWM | Synchronous PWM or PFM/PWM |
| MOSFET | Internal | Internal | Internal |
| Typical Efficiency (%) | 94 | 94 | 94 |
| Min Operating Voltage (V) | 2.4 | 2.4 | 2.4 |
| Max Operating Voltage (V) | 6 | 6 | 6 |
| Min Output Voltage (V) | 0.9 | 0.9 | 0.9 |
| Max Output Voltage (V) | 4 | 4 | 4 |
| Accuracy (%) | 2 | 2 | 2 |
| Min Switching Frequency (kHz) | 300 | 600 | 1200 |
| Max Switching Frequency (kHz) | 300 | 600 | 1200 |
| Built-In Voltage Detector | Yes | Yes | Yes |
| Built-In Voltage Regulator | Yes | Yes | Yes |
| Max Output Current (mA) | 600 | 600 | 600 |
| Quiescent Current (uA) | N/A | N/A | N/A |
| Packages | MSOP-10, USP-10 | MSOP-10, USP-10 | MSOP-10, USP-10 |
