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LTC3549EDCB#TRPB Power Path Management IC Switching Voltage Regulators 250mA L VIN Buck Reg in 2 x 3 DFN
LTC3549EDCB#TRPB Power Path Management IC Switching Voltage Regulators 250mA L VIN Buck Reg in 2 x 3 DFN
Specifications
Brand Name :
ADI
Model Number :
LTC3549EDCB#TRPBF
MOQ :
Contact us
Price :
Contact us
Payment Terms :
Paypal, Western Union, TT
Supply Ability :
50000 Pieces per Day
Delivery Time :
The goods will be shipped within 3 days once received fund
Packaging Details :
DFN6
Description :
Buck Switching Regulator IC Positive Adjustable 0.611V 1 Output 250mA 6-WFDFN Exposed Pad
Input Voltage MIN :
1.6 V
Input Voltage MAX :
5.5 V
Switching Frequency :
2.25 MHz
Shutdown :
Shutdown
Development Kit :
DC992A
Load Regulation :
0.5 %
Description

LTC3549EDCB#TRPB Power Path Management IC Switching Voltage Regulators 250mA L VIN Buck Reg in 2 x 3 DFN

FEATURES

  • 1.6V to 5.5V Input Voltage Range

  • Internal Soft-Start

  • Low Ripple Burst Mode® Operation

    Output Ripple: <20mVP-P

    IQ: 50μA

  • 2.25MHz Constant-Frequency Operation

  • High Efficiency: Up to 93%

  • 250mA Output Current (VIN = 1.8V, VOUT = 1.2V)

  • 450mA Peak Inductor Current

  • No Schottky Diode Required

  • Low Dropout Operation: 100% Duty Cycle

  • 0.611V Reference Voltage

  • Stable with Ceramic Capacitors

  • Shutdown Mode Draws <1μA Supply Current

  • Current Mode Operation for Excellent Line and Load

    Transient Response

  • Overtemperature Protection

  • Available in a Low Profile (0.75mm) 6-Lead

    (2mm x 3mm) DFN Package

APPLICATIONS

  • 2 AA-Cell Applications

  • Cellular Phones

  • Digital Cameras

  • MP3 Players

​

DESCRIPTIO

The LTC®3549 is a high efficiency, monolithic synchronous buck regulator using a constant-frequency, current mode architecture. The output voltage is adjusted via an external resistor divider.

A fixed switching frequency of 2.25MHz is supported. This switching frequency allows the use of small surface mount inductors and capacitors, including ceramics.

Supply current during Burst Mode operation is only 50μA dropping to < 1μA in shutdown. The 1.6V to 5.5V input voltage range makes the LTC3549 ideally suited for single cell Li-Ion, Li-Metal and 2-cell alkaline, NiCd or NiMH battery-powered applications. 100% duty cycle capabil- ity provides low dropout operation, extending battery life in portable systems. Burst Mode operation can be user-enabled, increasing efficiency at light loads, further extending battery life.

The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. Internal soft-start offers controlled output voltage rise time at start- up without the need for external components.

Product tags

step down switching regulator

,

step up switching regulator

,

buck boost regulator
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LTC3549EDCB#TRPB Power Path Management IC Switching Voltage Regulators 250mA L VIN Buck Reg in 2 x 3 DFN

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Product Detail
Brand Name :
ADI
Model Number :
LTC3549EDCB#TRPBF
MOQ :
Contact us
Price :
Contact us
Payment Terms :
Paypal, Western Union, TT
Supply Ability :
50000 Pieces per Day
Contact Supplier
LTC3549EDCB#TRPB Power Path Management IC Switching Voltage Regulators 250mA L VIN Buck Reg in 2 x 3 DFN

ChongMing Group (HK) Int'l Co., Ltd

Active Member
3 Years
shenzhen
Since 2008
Business Type :
Distributor/Wholesaler
Main Products :
Flash Memory IC Chip, Programmable IC Chip, Computer IC Chips
Total Annual :
5000000-7000000
Employee Number :
80~100
Certification Level :
Active Member
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