XC9111 series
PFM Controlled Step-Up DC/DC Converter
The XC9111 is a family of PFM controlled step-up DC/DC converter/ controller ICs designed to generate low supply voltage by the combination of PFM control and CMOS structure.The XC9111 has a variable 56% or 75% duty ratio and built-in 2.5Ω N-ch driver transistor.
An external transistor can also be used with some versions within the series for applications which may require larger currents.
A CE pin function is optional allowing for shutdown when the IC is not in use, thereby reducing power consumption to a minimum.
Features:
- Input Voltage: 0.9V ~ 10V
- Output Voltage: 1.5V ~ 7.0V
- Duty Cycle: 55%/75% variable
- Oscillator Frequency: 100KHz, 155kHz
- Max. Output Current: >100mA
- Low Supply Current: 2.0uA (Vout=3.0V)
Packages: SOT-23
, SOT-89
, SOT-25
, USP-6C
| Property | XC9111 | XC9111 |
| Type | Step-Up | Step-Up |
| Control | PFM | PFM |
| MOSFET | Internal | External |
| Typical Efficiency (%) | 87 | 87 |
| Min Operating Voltage (V) | 0.9 | 0.9 |
| Max Operating Voltage (V) | 10 | 10 |
| Min Output Voltage (V) | 1.5 | 1.5 |
| Max Output Voltage (V) | 7 | 7 |
| Accuracy (%) | 2.5 | 2.5 |
| Min Switching Frequency (kHz) | 100 | 100 |
| Max Switching Frequency (kHz) | 100 | 100 |
| Built-In Voltage Detector | No | No |
| Built-In Voltage Regulator | No | No |
| Packages | SOT-23, SOT-89, SOT-25, USP-6C | SOT-23, SOT-89, SOT-25, USP-6C |
| Max Output Current (mA) | 50 | 300 |
| Quiescent Current (uA) | N/A | N/A |
