LTC3785

Features: Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT 2.7V to 10V Input and Output Range Up to 96% Effi ciency Up to 10A of Output Current All N-Channel MOSFETs, No RSENSE True Output Disconnect During Shutdown Programmable Current Limit and Soft-Start Optional Sho...

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SeekIC No. : 004402346 Detail

LTC3785: Features: Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT 2.7V to 10V Input and Output Range Up to 96% Effi ciency Up to 10A of Output Current All N-Channel MOSFETs, No ...

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Part Number:
LTC3785
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/7/15

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Product Details

Description



Features:

Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT
2.7V to 10V Input and Output Range
Up to 96% Effi ciency
Up to 10A of Output Current
All N-Channel MOSFETs, No RSENSE
True Output Disconnect During Shutdown
Programmable Current Limit and Soft-Start
Optional Short-Circuit Shutdown Timer
Output Overvoltage and Undervoltage Protection
Programmable Frequency: 100kHz to 1MHz
Selectable Burst Mode® Operation
Available in 24-Lead (4mm * 4mm) Exposed Pad QFN Package



Application

Palmtop Computers
Handheld Instruments
Wireless Modems
Cellular Telephones



Pinout

  Connection Diagram


Specifications

Input Supply Voltage (VIN) ............................. 0.3V to 11V
ISVOUT, ISVIN .................................................. 0.3V to 11V
SW1, SW2, ISSW1, ISSW2 Voltage:
DC ..................................................................... 1V to 11V
Pulsed, <1µs ..................................................... 2V to 12V
RUN/SS, MODE, CCM, VDRV, VCC Voltages ....... 0.3V to 6V
TG1, VBST1 Voltages ..................................... 0.3V to 16V
With Respect to SW1 ...................................... 0.3V to 6V
TG2, VBST2 Voltages ..................................... 0.3V to 16V
With Respect to SW2 ...................................... 0.3V to 6V
BG1, BG2 Voltage ............................................ 0.3V to 6V
Peak Driver Output Current < 10µs
(TG1, TG2, BG1, BG2) .....................................................3A
VCC Average Output Current ..................................100mA
Operating Temperature Range ..................... 40 to 85
Storage Temperature Range ....................... 65 to 125



Description

The LTC®3785 is a high power synchronous buck-boost controller that drives all N-channel power MOSFETs from input voltages above, below and equal to the output voltage. With an input range of 2.7V to 10V, the LTC3785 is well suited for a wide variety of single or dual cell Li-Ion or multi-cell alkaline/NiMH applications.

The operating frequency of LTC3785 can be programmed from 100kHz to 1MHz. The soft-start time and current limit are also programmable. The soft-start capacitor doubles as the fault timer which can program the IC to latch off or recycle after a determined off time.

Burst Mode operation of LTC3785  is user controlled and can be enabled by driving the MODE pin high. Protection features include foldback current limit, shortcircuit and overvoltage protection.




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