LTC3546EUFD#PBF Electronic Ic Chips Color TV Ic chip , ic diode 20mA to 30A Current

LTC3546EUFD#PBF Electronic Ic Chip Color TV Ic chip ic diode
Dual Synchronous, 3A/1A or 2A/2A Confi gurable Step-Down DC/DC Regulator

FEATURES:
n VIN Range: 2.25V to 5.5V n VOUT Range: 0.6V to 5V
n Programmable Frequency Operation; 2.25MHz, or Adjustable Between 0.75MHz to 4MHz
n Low RDS(ON) Internal Switches
n High Effi ciency: Up to 96%
n No Schottky Diodes Required

n Short-Circuit Protected n Current Mode Operation for Excellent Line and Load Transient Response
n Low Ripple Burst Mode Operation (30mVP-P), IQ = 160μA
n Ultralow Shutdown Current: IQ < 1μA
n Low Dropout Operation: 100% Duty Cycle
n Power Good Output For Each Channel
n Externally or Internally Programmable Burst Level
n External or Internal Soft-Start or Supply Tracking
n Available in Thermally Enhanced 28-Lead (4mm × 5mm) QFN and TSSOP Packages
General Description

The LTC®3546 is a dual, constant-frequency, synchronous step down DC/DC converter for medium power applications. The design consists of 2A and 1A primary output switches.

In addition to the 2A/1A capability, a 1A dependant output switch can be externally connected to either of the primary outputs to produce 3A/1A dual regulator or 2A/2A dual regulator confi gurations. Supply operation is from 2.25V to 5.5V.

The switching frequency can be set to 2.25MHz, adjustable 0.75MHz to 4MHz, or synchronized to an external clock. Each output is adjustable from 0.6V to 5V and has output tracking on power-up. Internal synchronous low RDS(ON) power switches provide high effi ciency without external Schottky diodes. User-selectable modes (Burst Mode® operation, pulse skipping and forced continuous) allow trade-off between ripple noise and power effi ciency.

Burst Mode operation provides high effi ciency at light loads. Pulse-skipping mode provides low ripple noise at light loads. The device is capable of low dropout confi gurations and both channels can operate at 100% duty cycle. In shutdown, the device draws <1μA.

ABSOLUTE MAXIMUM RATINGS(1)

CHONGMING GROUP (HK) INT'L CO., LTD. located in Hong Kong and Shenzhen. We are an independent Distributor of Electronic Components,established in 2008. AS a growing fast company, CM GROUP is renowned for its world-class efficiency, excellent services, and extraordinary ability to supply electronic components that are hard to find and even obsolete. We have taken pride in our innovation, reliability and service, especially in the semiconductor marketplace.
Our distribution brands include XILINX，ALTERA，ATMEL, INFINEON, ST,SAMSUNG，TEXAS INSTRUMENTS，ON，TOSHIBA，，MICROCHIP，CYPRESS，FREESCALE，etc. We distributes over 200,000 products ranging from semiconductors to resistors, capacitors, diodes, inductors, connectors, transistors, sensors and so on.
Our mission is to meet and exceed all the expecations of what we supply to customers.