STEP-DOWN SWITCHING REGULATOR CONTROLLER
- RS Stock No.:
- 8225853
- Mfr. Prt No.:
- LTC3851AEMSE#PBF
- Brand:
- Analog Devices
Technical Reference
Legislation and Compliance
RoHS Certificate of Compliance
EU Directives 2011/65/EU and 2015/863 restrict the use of the 10 substances below in the manufacture of specified types of electrical equipment.
Whilst this restriction does not legally apply to components, it is recognised that component “compliance” is relevant to many customers.
RS definition of RoHS Compliance:
- The product does not contain any of the restricted substances in concentrations and applications banned by the Directive,
- and for components, the product is capable of being worked on at the higher temperatures required by lead–free soldering
The restricted substances and maximum allowed concentrations in the homogenous material are, by weight:
| Substance | Concentration |
| Lead | 0.1% |
| Mercury | 0.1% |
| PBB (Polybrominated Biphenyls) | 0.1% |
| PBDE ( Polybrominated Diphenyl Ethers) | 0.1% |
| Hexavalent Chromium | 0.1% |
| Cadmium | 0.01% |
| DEHP (Bis (2-Ethylhexl) phthalate) | 0.1% |
| BBP (Benzyl butyl phthalate) | 0.1% |
| DBP (Dibutyl phthalate) | 0.1% |
| DIBP (Diisobutyl phthalate) | 0.1% |
The supplier of the item listed below has informed RS Components that the product is "RoHS Compliant".
RS Components has taken all reasonable steps to confirm this statement. Information relates only to products sold on or after the date of this certificate.
| RS stock number | 8225853 |
| Product description | STEP-DOWN SWITCHING REGULATOR CONTROLLER |
| Manufacturer / Brand | Analog Devices |
| Manufacturer part number | LTC3851AEMSE#PBF |
RS Components Ltd, Birchington Road, Corby, Northants, NN17 9RS, UK
Statement of Conformity
This statement confirms that the product detailed below complies with the specifications currently published in the RS media and has been subject to the strict quality conditions imposed by RS Components’ internal management systems. Furthermore and where applicable, it confirms that all relevant semiconductor devices have been handled and packed under conditions that meet the administrative and technical requirements of ANSI/ESD S20.20 and EN61340-5-1 electrostatics control standards.
| RS stock number | 8225853 |
| Product description | STEP-DOWN SWITCHING REGULATOR CONTROLLER |
| Manufacturer / Brand | Analog Devices |
| Manufacturer part number | LTC3851AEMSE#PBF |
The foregoing information relates to product sold on, or after, the date shown below.
RS COMPONENTS
| Date | Dec 27, 2024 |
RS Components Pte Ltd Robinson Road, P.O. Box 1582, Singapore 903132
Product Details
Switching Voltage Regulators, Linear Technology
Linear Technology product series of synchronous and non-synchronous internal switching regulator ICs offer high efficiency plus a wide input voltage range and switching frequencies up to 4MHz.
The controllers span over several types of configurations from buck (step-down), boost (step-up), buck-boost, forward, Isolated, Inverting and flyback controllers. The Flyback, Forward and Isolated Controllers primary and secondary side provide a solution to help replace the DC/DC bricks that get used in back-plane power conversion.
Step-Down (Buck) Regulators, External Power Switch Buck Controllers, Linear Technology
Linear Technology's external power switch buck controller covers a range of input and output voltages, with current-mode and voltage-mode topologies. LTC’s Step down dc-dc controllers function in a variety of applications including Cellular phones, wireless modems, portable computers, battery powered equipment, automotive and heavy equipment and Industrial control systems.
Some devices may feature:
Multiphase operation and output tracking
Easy synchronization to external clocks
Specifications
| Attribute | Value |
| Brand | Analog Devices |
| Output Type | Adjustable |
| Length | 4.04 mm |
| Number of Outputs | 1 |
| Maximum Input Voltage | 38 V |
| Height | 0.86 mm |
| Width | 3 mm |
| Dimensions | 4.039 x 3 x 0.86 mm |
| Pin Count | 16 |
| Maximum Switching Frequency | 810 kHz |
| Minimum Input Voltage | 4 V |
| Switching Regulator | Yes |
| Regulator Function | Step Down |
| Package Type | MSOP |
| Maximum Operating Temperature | +125 °C |
| Maximum Output Voltage | 5.5 V |
| Line Regulation | 0.02 %/V |
| Load Regulation | 0.2 % |
| Minimum Output Voltage | 0.8 V |
| Minimum Operating Temperature | -40 °C |
| Maximum Output Current | 75 µA |
| Mounting Type | Surface Mount |