LTC3429ES6#TRPBF

LTC3429 is a high efficiency synchronous, fixed frequency, step-up DC/DC converter with true output load disconnect, inrush current limiting and softstart. A switching frequency of 500KHz minimizes overall solution footprint by allowing the use of tiny, low profile inductors and ceramic capacitors. Current mode PWM control with internal compensation reduces external parts count thereby saving critical board real estate. This device shifts automatically to power saving Burst Mode operation at light loads while the device features continuous switching at light loads. Antiringing control circuitry reduces EMI concerns by damping the inductor in discontinuous mode. The devices also feature low shutdown current of under 1µA. The true output disconnect feature allows the output to be completely discharged in shutdown. It is widely used in application such as MP3 players, digital cameras, LCD bias supplies, handheld instruments, wireless handsets, GPS receivers etc.

• True output load disconnect, inrush current limiting and internal soft-start
• Internal synchronous rectifier, Current mode control with internal compensation
• Short-circuit protection, antiringing control minimizes EMI, tiny external component
• Minimum start-up voltage is 0.85V typical at (ILOAD = 1mA, VOUT = 0V)
• Input voltage range is 0.5V to 4.4V
• Output voltage range is 2.5V to 4.3V (upto 5V with schottky)
• Max duty cycle is 90% typical at (VFB = 1.15V)
• Soft-start time is 2.5ms typical
• Operating temperature is -40°C to 85°C
• Package style is 6-lead plastic TSOT-23

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party