LTC3448 - 1.5MHz/2.25MHz, 600mA Synchronous Step-Down Regulator With LDO Mode

The LTC3448 is a high efficiency, monolithic, synchronous buck Regulator using a constant frequency, current mode architecture. Supply current during operation is only 32A (linear Regulator mode) and drops to <1A in shutdown. The 2.5V to 5.5V input voltage range makes the LTC3448 ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems. At moderate output load levels, PWM pulse skipping mode operation provides very low output ripple voltage for noise sensitive applications. The LTC3448 automatically switches into linear Regulator operation at very low load currents to maintain <5mVP-P output voltage ripple. Supply current in this mode is typically 32A. The Switch to linear Regulator mode occurs at a threshold of 3mA. Linear Regulator operation CAN be set to on, off or Automatic turn on/off.
Switching frequency is selectable at either 1.5MHz or 2.25MHz, allowing the use of small surface mount inductors and capacitors.
The internal synchronous Switch increases efficiency and eliminates the need for an external Schottky Diode Low output voltages are easily supported with the 0.6V feedback reference voltage. The LTC3448 is available in a low profile 3mm 3mm DFN package or thermally enhanced 8-lead MSOP.
Protected by U.S. Patents including 5481178, 6580258, 6304066, 6127815, 6498466, 6611131. Others pending.
By Linear Technology Corporation
LTC3448 's PackagesLTC3448 's pdf datasheet
LTC3448EDD DFN
LTC3448EDD-PBF DFN
LTC3448EDD-TR DFN
LTC3448EDD-TRPBF DFN
LTC3448EMS8E MSOP
LTC3448EMS8E-PBF MSOP
LTC3448EMS8E-TR MSOP
LTC3448EMS8E-TRPBF MSOP




LTC3448 Pinout, Pinouts
LTC3448 pinout,Pin out
This is one package pinout of LTC3448,If you need more pinouts please download LTC3448's pdf datasheet.

LTC3448 Application circuits
LTC3448 circuits
This is one application circuit of LTC3448,If you need more circuits,please download LTC3448's pdf datasheet.


Related Electronics Part Number

Related Keywords:

LTC3448 Pb-Free LTC3448 Cross Reference LTC3448 Schematic LTC3448 Distributor
LTC3448 Application Notes LTC3448 RoHS LTC3448 Circuits LTC3448 footprint