STMicroelectronics UC2845BN, PWM Current Mode Controller, 1 A, 500 kHz, 8-Pin PDIP
- RS Stock No.:
- 7141149
- Mfr. Prt No.:
- UC2845BN
- Brand:
- STMicroelectronics
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 | 7141149 |
| Product description | STMicroelectronics UC2845BN, PWM Current Mode Controller, 1 A, 500 kHz, 8-Pin PDIP |
| Manufacturer / Brand | STMicroelectronics |
| Manufacturer part number | UC2845BN |
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 | 7141149 |
| Product description | STMicroelectronics UC2845BN, PWM Current Mode Controller, 1 A, 500 kHz, 8-Pin PDIP |
| Manufacturer / Brand | STMicroelectronics |
| Manufacturer part number | UC2845BN |
The foregoing information relates to product sold on, or after, the date shown below.
RS COMPONENTS
| Date | Nov 5, 2024 |
RS Components Pte Ltd Robinson Road, P.O. Box 1582, Singapore 903132
Product Details
PWM (Pulse Width Modulation) Controllers, STMicroelectronics
PWM Controllers, STMicroelectronics
Pulse-width modulator (PWM) controllers can support isolated and non-isolated AC-DC and DC-DC switch mode power supplies. They are based on the most popular topologies in both single-ended, such as fly-back, forward or quasi-resonant controllers, and double-ended configurations, such as asymmetrical half-bridge, for Switch Mode Power Supplies (SMPS).
The PMW controllers also integrate a comprehensive set of protections for enhanced robustness and reliability.
Specifications
| Attribute | Value |
| Brand | STMicroelectronics |
| Maximum Switching Frequency | 500 kHz |
| Output Current | 1 A |
| Number of Outputs | 1 |
| Control Method | Current |
| Mounting Type | Through Hole |
| Fall Time | 50 ns |
| Rise Time | 50 ns |
| Package Type | PDIP |
| Pin Count | 8 |
| Topology | Boost, Flyback |
| Maximum Duty Cycle | 50 % |
| Dimensions | 10.92 x 6.6 x 3.32 mm |
| Length | 10.92 mm |
| PWM Controller Type | Current Mode |
| Width | 6.6 mm |
| Height | 3.32 mm |
| Maximum Operating Temperature | +150 °C |
| Minimum Operating Temperature | -40 °C |
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