Parameters |
Surface Mount |
YES |
Number of Pins |
20 |
Operating Temperature |
-40°C~150°C TJ |
Packaging |
Tube |
Published |
2012 |
JESD-609 Code |
e3 |
Part Status |
Active |
Moisture Sensitivity Level (MSL) |
1 (Unlimited) |
Number of Terminations |
20 |
ECCN Code |
EAR99 |
Terminal Finish |
Matte Tin (Sn) |
Additional Feature |
ALSO OPERATES IN ADJUSTABLE MODE FROM 0.80V TO 24V |
Subcategory |
Switching Regulator or Controllers |
Technology |
CMOS |
Terminal Position |
DUAL |
Terminal Form |
GULL WING |
Peak Reflow Temperature (Cel) |
225 |
Terminal Pitch |
0.65mm |
Base Part Number |
LTC3891 |
Function |
Step-Down |
Number of Outputs |
1 |
Output Voltage |
24V |
Output Type |
Transistor Driver |
Input Voltage-Nom |
12V |
Analog IC - Other Type |
SWITCHING CONTROLLER |
Output Configuration |
Positive |
Output Current |
5A |
Voltage - Supply (Vcc/Vdd) |
4V~60V |
Control Features |
Current Limit, 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) |
60V |
Control Technique |
PULSE WIDTH MODULATION |
Synchronous Rectifier |
Yes |
Switcher Configuration |
PUSH-PULL |
Max Frequency |
835kHz |
Duty Cycle (Max) |
99% |
Clock Sync |
No |
Length |
6.5mm |
Width |
4.5mm |
RoHS Status |
ROHS3 Compliant |
Lead Free |
Lead Free |
Factory Lead Time |
1 Week |
Lifecycle Status |
PRODUCTION (Last Updated: 1 week ago) |
Mounting Type |
Surface Mount |
Package / Case |
20-TSSOP (0.173, 4.40mm Width) Exposed Pad |
LTC3891HFE#PBF Overview
It comes in the 20-TSSOP (0.173, 4.40mm Width) Exposed Pad package, which makes switching controller suitable for most applications. 1 outputs can be generated with the dc motor controller. There is a Tube solid enclosure around the pmic. With this function, you can deal with Transistor Driver dc switching's outputs (s). 4V~60V is the supply voltage and the operating voltage of the dc control. Qualified to work in a -40°C~150°C TJ dc switcher. It can switch at 105kHz~835kHz 350kHz~535kHz. As it has a Surface Mount value, it can be used for general dc dc regulator. The dcdc regulator features Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking for efficient switching control. Thare switch converters are connected to an analog integrated circuit (IC) of type SWITCHING CONTROLLER. The switching converters's terminals (s) are designed at DUAL. 20 terminations with a variety of function. Some of the control techniques used by these dc dc converter ics are PULSE WIDTH MODULATION. DC switcher's input voltageis 12V volts. You can find other relevant dc to dc converter ics by searching "LTC3891". Pins number 20 of switching converter in total. Specially, switching converter corresponds to type Switching Regulator or Controllers. dc dc voltage regulators should have a minimum input voltage of 4V. The test statistics indicate that DC regulator outputs a voltage of 24V. Considering the dc to dc regulator can only accept 60V input voltage, it is important to take note of this. You should note down the dc dc regulator's usual output current of 5A when you start a project. It is estimated that this dc regulatorhas a maximum frequency of 835kHz. In order to satisfy the need, DC to DC voltage regulator has a value of ALSO OPERATES IN ADJUSTABLE MODE FROM 0.80V TO 24V.
LTC3891HFE#PBF Features
Transistor Driver Outputs
Switching Frequency: 105kHz~835kHz 350kHz~535kHz
Current Limit, Enable, Frequency Control, Power Good, Soft Start, Tracking
PULSE WIDTH MODULATION
ALSO OPERATES IN ADJUSTABLE MODE FROM 0.80V TO 24V
LTC3891HFE#PBF Applications
There are a lot of Linear Technology/Analog Devices LTC3891HFE#PBF DC to DC converter applications.
- Various precision measuring instruments
- Energy management systems
- Packaging
- Hydraulic presses
- Hydrogen power
- Magnetohydrodynamic power
- USB circuits
- CMM
- Digital display device
- Access control systems