Product Summary
The LT1940LEFE#TRPBF is a Step-Down Switching Regulator. The LT1940LEFE#TRPBF is a dual current mode PWM step-down DC/DC converter 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 applications of the LT1940LEFE#TRPBF include Disk Drives, DSP Power Supplies, Wall Transformer Regulation, Distributed Power Regulation, DSL Modems and Cable Modems.
Parametrics
LT1940LEFE#TRPBF absolute maximum ratings: (1)VIN Voltage: (–0.3), 25V; (2)BOOST Pin Voltage: 35V; (3)BOOST Pin Above SW Pin: 25V; (4)PG Pin Voltage: 25V; (5)SHDN, FB Pins: 6V; (6)SW Voltage: VIN; (7)Maximum Junction Temperature: 125℃; (8)Operating Temperature Range (Note 2): –40℃ to 85℃; (9)Storage Temperature Range: –65℃ to 150℃; (10)Lead Temperature (Soldering, 10 sec): 300℃.
Features
LT1940LEFE#TRPBF features: (1)Wide Input Voltage Range: 3.6V to 25V; (2)Two 1.4A Output Switching Regulators with Internal Power Switches; (3)Small 16-Lead TSSOP Surface Mount Package; (4)Constant 1.1MHz Switching Frequency; (5)Anti-Phase Switching Reduces Ripple; (6)Independent Shutdown/Soft-Start Pins; (7)Independent Power Good Indicators Ease Supply Sequencing; (8)Uses Small Inductors and Ceramic Capacitors.
Diagrams
Image | Part No | Mfg | Description | Pricing (USD) |
Quantity | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
LT1940LEFE#TRPBF |
IC REG BUCK ADJ 1.4A DL 16TSSOP |
Data Sheet |
|
|
||||||||||||
Image | Part No | Mfg | Description | Pricing (USD) |
Quantity | |||||||||||
LT1904 |
Other |
Data Sheet |
Negotiable |
|
||||||||||||
LT1910ES8 |
IC MOSFET DRIVER HIGH-SIDE 8SOIC |
Data Sheet |
|
|
||||||||||||
LT1910ES8#PBF |
IC MOSFET DRIVER HIGH-SIDE 8SOIC |
Data Sheet |
|
|
||||||||||||
LT1910ES8#TR |
IC DRIVER MOSFET HI SIDE 8SOIC |
Data Sheet |
|
|
||||||||||||
LT1910ES8#TRPBF |
IC MOSFET DRIVER HIGH-SIDE 8SOIC |
Data Sheet |
|
|
||||||||||||
LT1910IS8#PBF |
IC MOSFET DRIVER HI-SIDE 8-SOIC |
Data Sheet |
|
|