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59 pcs
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59 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The LT1940EFE#PBF is a dual current mode PWM step-down DC/DC converter manufactured by Analog Devices Inc. It integrates two 1.4A output switching regulators, each with internal power switches. These regulators are synchronized to a 1.1MHz oscillator and operate with anti-phase switching to minimize input ripple current.
The device supports a wide input voltage range, with the LT1940 variant operating from 3.6V to 25V and the LT1940L variant from 3.6V to 7V. The output voltages are adjustable and set using external resistor dividers. Each regulator includes independent shutdown and soft-start circuits, as well as power-good indicators that simplify power supply sequencing.
With its 1.1MHz constant switching frequency, the LT1940EFE#PBF allows for the use of small inductors and ceramic capacitors, enabling a compact dual 1.4A output solution. The constant frequency and ceramic capacitors contribute to low, predictable output ripple voltage. The device is housed in a small 16-TSSOP (Exposed Pad) surface mount package, suitable for applications requiring space efficiency.
Key electrical specifications include an input voltage range starting at 3.6V, an output current capability of 1.4A per channel, and a switching frequency of 1.1MHz. The topology is Buck, and it does not feature a synchronous rectifier. The operating temperature range is 0°C to 70°C.
The LT1940 variant has an input voltage range of 3.6V to 25V, while the LT1940L variant operates from 3.6V to 7V.
Each of the two regulators can provide an output current of 1.4A.
The device operates at a constant switching frequency of 1.1MHz.
The LT1940EFE#PBF uses a Buck topology.
No, the LT1940EFE#PBF does not have a synchronous rectifier.
The operating temperature range is 0°C to 70°C.
It is supplied in a 16-TSSOP (0.173", 4.40mm Width) Exposed Pad package.