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LINEAR TECHNOLOGY  LT1940EFE#PBF  DC/DC Switching Regulator, Buck, 2 Output, 3.6 V to 25 V in, 22 V/1.4 A out, 1.35 MHz, TSSOP-16

LINEAR TECHNOLOGY LT1940EFE#PBF
Manufacturer Part No:
LT1940EFE#PBF
Order Code:
1273792
Technical Datasheet:
See all Technical Docs

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

Product Overview

The LT1940EFE#PBF is a Dual Monolithic 1.1MHz Step-down Switching Regulator with internal 2A power switches. Both converters are synchronized to a single 1.1MHz oscillator and run with opposite phases, reducing input ripple current. The output voltages are set with external resistor dividers and each regulator has independent shutdown and soft-start circuits. Each regulator generates a power-good signal when its output is in regulation, easing power supply sequencing and interfacing with microcontrollers and DSPs. The LT1940's 1.1MHz switching frequency allows the use of tiny inductors and capacitors, resulting in a very small dual 1.4A output solution. Constant frequency and ceramic capacitors combine to produce low, predictable output ripple voltage. A current mode PWM architecture provides fast transient response with simple compensation components and cycle-by-cycle current limiting. Frequency fold back and thermal shutdown provide additional protection.
  • Two 1.4A output switching regulators with internal power switches
  • Constant 1.1MHz switching frequency
  • Anti-phase switching reduces ripple
  • Independent shutdown/soft-start pins
  • Independent power good indicators ease supply sequencing
  • Uses small inductors and ceramic capacitors

Product Information

Input Voltage Min:
3.6V
Input Voltage Max:
25V
No. of Outputs:
2 Output
DC / DC Converter IC Case:
TSSOP
No. of Pins:
16Pins
Output Current - Output 1:
1.4A
Output Current - Output 2:
1.4A
Output Voltage - Output 1:
22V
Output Voltage - Output 2:
22V
Regulator Output Type:
Adjustable
Switching Frequency:
1.35MHz
Topology:
Buck (Step Down)
Operating Temperature Max:
85°C
Packaging:
Cut Tape
Product Range:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

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Applications

  • Computers & Computer Peripherals
  • 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):
.000104

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