Converters

Energize your power with efficiency!
 

General Description

SiTI has developed two types of DC/DC converters: capacitor charge pump and inductor-based boost converter. The feature of high efficiency will extend battery life, and therefore our DC/DC converters are an economic and efficient solution for battery-powered applications. Moreover, the constant current driving technology means they can provide a stable step-up source to power white LEDs.

DC/DC drivers regulate output current in low bit-to-bit skew, so they are ideal for driving LEDs whose light intensity is proportional to the current passing through them. Due to the small size package, DC/DC series occupy only little area, which make them suitable for handheld devices

 

Applications

Compared to charge pump ICs, PC112/113 (boost) require much less input power and maximize battery life. Both of them are ideal to drive white LED display backlighting for portable devices including digital cameras, mobile phones and PDAs.

DD231/3 (3 and 4-channel constant current driver) can be applied to exterior and interior automotive lighting, decorative lighting, and architectural lighting. DD211/2 (2X charge pump driver) can be used in portable light sources such as flashlights, headlights and flash lures.

 

    Part Number Application Main features
    PC112/113   White LED display backlighting for digital cameras, mobile phones and PDAs   1. Inductor based boost and __constant Current Driver IC
2. Up to 80% efficiency
3. Drives 6 white LED 20 mA __from 2.8V
 
       DD211   Flashlight
Headlight
PDA light stylus
Flash lures
  1. 2X Charge Pump Driver IC
2. Low supply voltage __2.0~3.3V
3. Maximum output current: __100mA
 
       DD212   Flashlight
Headlight
PDA light stylus
Flash lures
  1. 2X Charge Pump Driver IC
2. Low supply voltage __2.0~5.5V
3. Maximum output current: __300mA
 
       DD231   Decorative and entertainment lighting
Exterior and interior automotive lighting
Indoor and outdoor commercial and residential architectural lighting
  1. 3-channel Constant __Current LED Driver
2. Current matching: bit-bit __4%, chip-chip 10%
3. Output sink current with __one resistor from 5mA to __30mA
 
       DD233   Decorative and entertainment lightingu
Exterior and interior automotive lightingu
Indoor and outdoor commercial and residential architectural lighting
  1. 4-channel Constant __Current LED Driver
2. Current matching: bit-bit __4%, chip-chip 10%
3. Output sink current with __one resistor from 5mA to __30mA
 


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