UC3845BN - ST Microelectronics

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

UC3845BN
Manufacturer

ST Microelectronics
ChipWorker Part#

CW954271
Category

PWM Controller IC
Package

DIP-8
Description

PMIC; PWM controller; 1A; 48-500kHz; DIP8; boost, flyback; 1.25W
Documentation

Datasheet

UC3845BN Global Supplier

{{ supplierTable.supplier }}	{{ supplierTable.part }}	{{ supplierTable.availability }}	MOQ	{{ supplierTable.delivery_date }}

{{viewMore}}
{{viewMore}}
DigiKey	{{noList.partNo}} {{noList.mfr}}	0 {{ search_item }}	-	{{outStock}}
Arrow	{{noList.partNo}} {{noList.mfr}}	0 {{ search_item }}	-	{{outStock}}
Mouser	{{noList.partNo}} {{noList.mfr}}	0 {{ search_item }}	-	{{outStock}}
					{{submitRFQ}}

UC3845BN Specifications

Attribute	Attribute Value

Part Number	UC3845BN
Manufacturer	ST Microelectronics
ChipWorker Part#	CW954271
Category	PWM Controller IC
Documentation	Datasheet
Mounting Style	Through Hole
Number of Pins	8 Pin
Case/Package	DIP-8
Frequency	250 kHz
Supply Voltage (DC)	12.0V (min)
Number of Outputs	1 Output
Input Voltage (DC)	15.0 V
Output Voltage	5 V
Output Current	200 mA
Supply Current	17 mA
Number of Positions	8 Position
Power Dissipation	1.25 W
Rise Time	50 ns
Switching Frequency	250 kHz
Thermal Resistance	100 ℃/W
Duty Cycle	50 %
Output Voltage (Max)	5.1 V
Output Voltage (Min)	4.90 V
Output Current (Max)	1 A
Maximum Duty Cycle	50 %
Fall Time	50 ns
Operating Temperature (Max)	150 ℃
Operating Temperature (Min)	-40 ℃
Power Dissipation (Max)	1250 mW
Supply Voltage	8.2V ~ 25V
Supply Voltage (Max)	25 V
Supply Voltage (Min)	12 V
Input Voltage	15 V
	expand all
Size-Length	10.92 mm
Size-Width	6.6 mm
Size-Height	3.32 mm
Operating Temperature	-40℃ ~ 150℃ (TJ)
Product Lifecycle Status	Active
Packaging	Tube
RoHS	RoHS Compliant
Lead-Free Status	Lead Free
REACH SVHC Compliance	No SVHC
REACH SVHC Compliance Edition	2015/12/17
ECCN Code	EAR99

Product Description

The UC3845BN is a high performance current mode PWM Controller IC. It is provides the necessary features to implement off-line or DC-to-DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include a trimmed oscillator for precise duty cycle control under-voltage lockout featuring start-up current less than 0.5mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N-channel MOSFETs is low in the off-state.
Trimmed oscillator for precise frequency control
Automatic feed forward compensation
Latching PWM for cycle-by-cycle current limiting
Internally trimmed reference with under-voltage lockout
High current totem pole output
Under-voltage lockout with hysteresis
Low start-up and operating current

expand all

Delivery

DHLPrice

UPS

FedEx

TNT

EMS

OCS

SF EXPRESS

Chipworker Certification

Ordering Information

Order Payment Shipping Package Quality Assurance

These terms and conditions are for reference only. The actual terms and conditions are subject to the sales staff's quotation.
- Please check the technical specifications of the products when ordering.
- MOQ is the minimum order quantity required to purchase each part.
- If you have special ordering instructions, please indicate them on the order page.
- Pre-Shipment Inspection (PSI) will be used when ordering.
- You can check the status of your order in the “My Order” section of your personal account.
- Orders cannot be canceled after the package has been shipped. View more >
- Works with both individual and corporate clients. View more >
- All prices on the website include 20% VAT.
- Invoices are issued in the currency specified, but payment is made in Russian rubles at the exchange rate on the day of payment.
- If you need a detailed invoice or a tax identifier, please contact us.
- Delivery will take between 1 to 2 weeks after the shipment is sent to your country.
- Your order will be processed only after the invoice has been paid.
- The tracking number will be sent to you after the order is shipped. (It may take up to 24 hours for the information to be available from the carrier.) View more >
- Carefully tested and packaged by ChipWorker
- Vacuum packed
- Anti-static packaging
- Anti-vibration foam
- Income quality control (IQC), 800+ qualified distributors.
- Authorities test the chip to ensure the quality, authenticity and safety of your device.
- Decapsulation control
- X-ray inspection
- XRF inspection
- Electrical testing
- Surface testing

Contact Us

Buy UC3845BN

Stock is limited and changes quickly. Our 24/7 online sales team is ready to respond to your inquiries and orders at any time.