XC9509 series
Synchronous DC/DC with Built-in VR and VD
- XC9509 - VR input from Vin
The XC9509 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 XC9509 series is designed for use with ceramic capacitors and small chip style inductors, making it ideal for space conscious applications. The XC9509 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 |
