Parameters |
Factory Lead Time |
1 Week |
Lifecycle Status |
PRODUCTION (Last Updated: 4 weeks 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 |
Tape & Reel (TR) |
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 |
LTC3857IGN-1#TRPBF Overview
This switching controller fits most application requirements since it is packaged in a 28-SSOP (0.154, 3.90mm Width) package. For 2 outputs, the dc motor controller is appropriate. PMIC is packaged in a solid enclosure of Tape & Reel (TR). There are Transistor Driver dc switching's output (s) that it can handle. A 4V~38V voltage is supplied to the dc control and used for operating it. Suitable for work in a -40°C~125°C TJ dc switcher. With this switching controller, you can switch at 105kHz~835kHz 350kHz~535kHz. dc dc regulators can be carried out with Surface Mount. To ensure efficient switching, this dcdc regulator features a Enable, Frequency Control, Power Good, Soft Start, Tracking. The switch converters are connected to a DUAL SWITCHING CONTROLLER analog IC. A switching converters's terminal (s) sits at the DUAL position. 28 terminations with a variety of function. Some of the control techniques adapted by these dc dc converter ics include PULSE WIDTH MODULATION. DC switcher's voltage input of 12V. Other relevant dc to dc converter ics will be returned if you search "LTC3857". 28 pins are present on switching converter. Specially, switching converter corresponds to type Switching Regulator or Controllers. Input voltage of dc dc voltage regulator should be 4V. Test statistics indicate DC regulator outputs 24V voltage. The dc to dc regulator can only accept a maximum input voltage of 38V. DC regulator850kHz has the maximum frequency. There are several dc to dc voltage regulator in the PolyPhase? series. A high-quality communication requires 1 channels.
LTC3857IGN-1#TRPBF Features
Transistor Driver Outputs
Switching Frequency: 105kHz~835kHz 350kHz~535kHz
Enable, Frequency Control, Power Good, Soft Start, Tracking
PULSE WIDTH MODULATION
LTC3857IGN-1#TRPBF Applications
There are a lot of Linear Technology/Analog Devices LTC3857IGN-1#TRPBF DC to DC converter applications.
- Serial communication converter
- Correction machines
- Sensitive electronic devices
- Production lines
- Household control circuits
- Medical monitoring systems
- Nuclear power plants
- Magnetohydrodynamic power
- Constant current circuits
- Imported equipment