RICOH/Sub PMU & White LED Driver
| RN5T655 Series |
Charge Pump for White LED |
|
| RN5T655 contains a constant frequency charge pump to optimize for white LED application. It drives up to 6 LEDs with constant current for LED brightness matching. LED enabling/disabling and current are controllable through single wire serial pulse I/F. | |
| Feature |
|
| ● |
・White LED Charge Pump ・Current capability: Total currents capability 120mA ・Up to 20mA/LED drivable for 2 Sub LEDs ・Up to 20mA/LED for 4 Main LEDs. ・1x/1.5x/2x charge pump mode |
| ● |
・Main LED and sub LEDs individually controllable. ・ON/OFF control ・4 main LED and 2 sub LED drivable ・Fully programmable current with Single Wire serial pulse ・I/F: 16-step logarithmic scale |
| ● Others |
・Soft-start circuit ・Short-circuit protection, Open-circuit and Thermal ・Protection ・Thermal Shutdown Function |
| ● Package | ・16pin QFN package (Body size: 3 x 3, Pin pitch 0.4mm) |
| ● |
・CMOS process |
| Applications | |
| ● Wireless Handset | |
| ● MP3 players, PDA | |
| ● Digital Still Cameras | |
| ● Portable GPS | |
| Data Sheet(PDF) | |
| RN5T655 Series | |