Analog Devices Inc. LTC3336 Nanopower Buck DC-DC Regulators

Analog Devices LTC3336 Nanopower Buck DC-DC Regulators provide up to 250mA of output current from a 2.5V to 15V input. The input quiescent current of the LTC3336 is typically 80nA for output voltages less than 2.4V. For output voltage settings ≥2.4V, the quiescent current of the Buck Regulator is taken from the V_OUT regulated output. This mode of operation significantly reduces the V_IN quiescent current by about a factor of V_IN/V_OUT.

The LTC3336 Buck Regulator uses hysteretic voltage control to regulate the output through internal feedback from the V_OUT sense pin. The output voltage can be programmed to one of sixteen different fixed values. In dropout, the P-channel MOSFET is turned on 100%.

The peak input currents of 10mA, 30mA, 100mA, and 300mA are pin selectable as well as the output voltages of 1.2V, 1.5V, 1.6V, 1.8V, 2.0V, 2.4V, 2.5V, 2.8V, 3.0V, 3.2V, 3.3V, 3.6V, 3.7V, 4.1V, 4.2V, and 5.0V.

The Analog Devices Inc. LTC3336 Nanopower Buck DC-DC Regulator is offered in a compact 12-lead LQFN package.

Features

2.5V to 15.0V input voltage range
Output current up to 250mA
I_VIN = 65nA (IRegulation, No Load)
1.2V to 5.0V output voltage range
16 fixed output voltages programmed via 4 pin-strapped inputs
Low I_Q dropout mode

4 peak V_IN currents programmed via 2 pin-strapped inputs (10mA, 30mA, 100mA, 300mA)
Power Good (PGOOD) output
-40°C to +125°C operating junction temperature range
2mm x 2mm LQFN-12 Package