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LINEAR TECHNOLOGY  LTC1628IG-PG#PBF  DC/DC Controller, High Efficiency, 3.5V to 36V, 2 Outputs, Synchronous Buck, 250kHz, SSOP-28

LINEAR TECHNOLOGY LTC1628IG-PG#PBF
Manufacturer Part No:
LTC1628IG-PG#PBF
Order Code:
2294998
Technical Datasheet:
See all Technical Docs

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Product Overview

The LTC1628IG-PG#PBF is a high-performance dual step-down Switching Regulator Controller drive all N-channel synchronous power MOSFET stages. The constant frequency current-mode architecture allows adjustment of the frequency up to 300kHz. Power loss and noise due to the ESR of the input capacitors are minimized by operating the two controller output stages out of phase. OPTI-LOOP compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The precision 0.8V reference and power good output indicator are compatible with future microprocessor generations and a wide 3.5 to 30V (36V maximum) input supply range encompasses all battery chemistries. A RUN/SS pin for each controller provides both soft-start and optional timed, short-circuit shutdown. Current foldback limits MOSFET dissipation during short-circuit conditions when overcurrent latch-off is disabled.
  • Out-of-phase controllers reduce required input capacitance and power supply induced noise
  • OPTI-LOOP® Compensation minimizes COUT
  • ±1% Output voltage accuracy
  • Dual N-channel MOSFET synchronous drive
  • Adjustable soft-start current ramping
  • Foldback output current limiting
  • Latched short-circuit shutdown with defeat option
  • Output overvoltage protection
  • Remote output voltage sense
  • 20µA Low shutdown
  • Selectable constant frequency or burst mode operation
  • Power good output voltage monitor

Product Information

Supply Voltage Min:
3.5V
Supply Voltage Max:
36V
No. of Outputs:
2 Output
Duty Cycle (%):
99.4%
Controller IC Case Style:
SSOP
No. of Pins:
28Pins
Switching Frequency:
250kHz
Topology:
Synchronous Buck (Step Down)
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Packaging:
Cut Tape
Product Range:
-
Automotive Qualification Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

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Applications

  • Computers & Computer Peripherals
  • Power Management
  • Portable Devices

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):
.000426

Alternatives

DC/DC Controller, High Efficiency, 3.5V to 36V, 2 Outputs, Synchronous Buck, 250kHz, SSOP-28

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