Parameters |
Factory Lead Time |
1 Week |
Lifecycle Status |
PRODUCTION (Last Updated: 3 months ago) |
Mounting Type |
Surface Mount |
Package / Case |
28-SSOP (0.154, 3.90mm Width) |
Surface Mount |
YES |
Number of Pins |
28 |
Operating Temperature |
-40°C~125°C TJ |
Packaging |
Tube |
Published |
2012 |
Series |
PolyPhase® |
JESD-609 Code |
e3 |
Part Status |
Active |
Moisture Sensitivity Level (MSL) |
1 (Unlimited) |
Number of Terminations |
28 |
ECCN Code |
EAR99 |
Terminal Finish |
Matte Tin (Sn) |
Subcategory |
Switching Regulator or Controllers |
Technology |
CMOS |
Terminal Position |
DUAL |
Terminal Form |
GULL WING |
Peak Reflow Temperature (Cel) |
260 |
Terminal Pitch |
0.635mm |
Time@Peak Reflow Temperature-Max (s) |
30 |
Base Part Number |
LTC3857 |
Function |
Step-Down |
Number of Outputs |
2 |
Output Voltage |
24V |
Output Type |
Transistor Driver |
Input Voltage-Nom |
12V |
Number of Channels |
1 |
Analog IC - Other Type |
DUAL SWITCHING CONTROLLER |
Output Configuration |
Positive |
Voltage - Supply (Vcc/Vdd) |
4V~38V |
Control Features |
Enable, Frequency Control, Power Good, Soft Start, Tracking |
Input Voltage (Min) |
4V |
Topology |
Buck |
Control Mode |
CURRENT-MODE |
Frequency - Switching |
105kHz~835kHz 350kHz~535kHz |
Input Voltage (Max) |
38V |
Control Technique |
PULSE WIDTH MODULATION |
Synchronous Rectifier |
Yes |
Switcher Configuration |
PHASE-SHIFT |
Max Frequency |
850kHz |
Duty Cycle (Max) |
99.4% |
Clock Sync |
No |
Length |
9.9mm |
Width |
3.9mm |
RoHS Status |
ROHS3 Compliant |
Lead Free |
Lead Free |
LTC3857IGN-1#PBF Overview
Capsuled in the 28-SSOP (0.154, 3.90mm Width) package, the switching controller suits most application needs. This dc motor controller can be used to generate outputs with 2 numbers. Packaging for the pmic consists of Tube solid enclosures. With Transistor Driver dc switching's output (s), it is able to handle it. 4V~38V is the operating voltage and supply voltage of the dc control. Qualified to work in a -40°C~125°C TJ dc switcher. Using this switching controller, it is possible to switch at 105kHz~835kHz 350kHz~535kHz. A generalization of dc dc regulator can be made using Surface Mount. Switching control is made easier with the dcdc regulator's Enable, Frequency Control, Power Good, Soft Start, Tracking. Thare switch converters are connected to an analog integrated circuit (IC) of type DUAL SWITCHING CONTROLLER. DUAL are the position of the terminal of the switching converters. There are many different types of terminations for 28. A few of the control techniques these dc dc converter ics adapt include PULSE WIDTH MODULATION. DC switcher's voltage input is 12V. A search for "LTC3857" will reveal other relevant dc to dc converter ics. Switching converter has a total of 28 pins. Particularly, switching converter is a type of Switching Regulator or Controllers. The minimum input voltage of the dc dc voltage regulator should be 4V. DC regulator outputs 24V voltage based on test statistics. It should be noted that the dc to dc regulator only accepts 38V voltage as input voltage. DC regulator has a maximum frequency of 850kHz. The dc to dc voltage regulator is from the PolyPhase? series. There are 1 channels for high-quality communication.
LTC3857IGN-1#PBF Features
Transistor Driver Outputs
Switching Frequency: 105kHz~835kHz 350kHz~535kHz
Enable, Frequency Control, Power Good, Soft Start, Tracking
PULSE WIDTH MODULATION
LTC3857IGN-1#PBF Applications
There are a lot of Linear Technology/Analog Devices LTC3857IGN-1#PBF DC to DC converter applications.
- Pipe bending machines
- Printing equipment
- Cutting machine tools
- Medical equipment
- Scientific research
- Game consoles
- Medical monitoring systems
- Flexible manufacturing cells
- Servo drive system
- Hydrogen power