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LINEAR TECHNOLOGY  LTC3838IUHF-1#PBF  DC/DC Controller, Poly Phase, 4.5V to 38V, 2 Outputs, Synchronous Buck, 2MHz, QFN-38

LINEAR TECHNOLOGY LTC3838IUHF-1#PBF
Manufacturer Part No:
LTC3838IUHF-1#PBF
Order Code:
2313451
Technical Datasheet:
See all Technical Docs

Image is for illustrative purposes only. Please refer to product description.

Product Overview

The LTC3838IUHF-1#PBF is a 2-channel PolyPhase® synchronous step-down DC/DC Switching Regulator Controller has two independent channels drive all N-channel power MOSFETs. The controlled on-time, valley current-mode control architecture allows for not only fast response to transients without clock delay, but also constant frequency switching at steady load condition. Its proprietary load release transient detection feature (DTR) significantly reduces overshoot at low output voltages. A precision internal reference enables accurate differential output regulation. The dual channels can either provide two independent output voltages, or be combined into multiphase single-output configuration. The switching frequency can be programmed from 200kHz to 2MHz with an external resistor and can be synchronized to an external clock. Very low tON and tOFF times allow for near 0% and near 100% duty cycles, respectively. Voltage tracking soft start-up and multiple safety features are provided.
  • Controlled on-time, valley current mode control
  • Fast load transient response without clock delay
  • Detect transient release (DTR) reduces VOUT overshoot
  • Overvoltage protection and current limit foldback
  • Power good output voltage monitor
  • Output voltage tracking and adjustable soft start-up

Product Information

Supply Voltage Min:
4.5V
Supply Voltage Max:
38V
No. of Outputs:
2 Output
Duty Cycle (%):
-
Controller IC Case Style:
QFN
No. of Pins:
38Pins
Switching Frequency:
2MHz
Topology:
Synchronous Buck (Step Down)
Operating Temperature Min:
-40°C
Operating Temperature Max:
125°C
Packaging:
Each
Product Range:
-
Automotive Qualification Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

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Applications

  • Computers & Computer Peripherals
  • Communications & Networking
  • Power Management

Legislation and Environmental

Country of Origin:
United States

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Yes
Tariff No:
85423990
Weight (kg):
.000393

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