STMicroelectronics UC2844BD1

Lifecycle Status

ACTIVE (Last Updated: 7 months ago)

Factory Lead Time

10 Weeks

Mount

Surface Mount

Mounting Type

Surface Mount

Package / Case

8-SOIC (0.154, 3.90mm Width)

Number of Pins

8

Weight

506.605978mg

Operating Temperature

The operating temperature is the range of ambient temperature within which a power supply, or any other electrical equipment, operate in. This ranges from a minimum operating temperature, to a peak or maximum operating temperature, outside which, the power supply may fail.

-25°C~85°C TA

Packaging

Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.

Tube

JESD-609 Code

e4

Part Status

Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.

Active

Moisture Sensitivity Level (MSL)

1 (Unlimited)

Number of Terminations

8

ECCN Code

EAR99

Terminal Finish

Nickel/Palladium/Gold (Ni/Pd/Au)

Terminal Position

DUAL

Terminal Form

Occurring at or forming the end of a series, succession, or the like; closing; concluding.

GULL WING

Peak Reflow Temperature (Cel)

260

Time@Peak Reflow Temperature-Max (s)

30

Base Part Number

UC2844

Function

Step-Up, Step-Up/Step-Down

Number of Outputs

1

Output Voltage

5.05V

Output Type

Transistor Driver

Input Voltage-Nom

15V

Analog IC - Other Type

SWITCHING CONTROLLER

Output Configuration

Positive

Output Current

The rated output current is the maximum load current that a power supply can provide at a specified ambient temperature. A power supply can never provide more current that it's rated output current unless there is a fault, such as short circuit at the load.

1A

Voltage - Supply (Vcc/Vdd)

10V~30V

Max Supply Current

17mA

Control Features

Frequency Control

Topology

Boost, Flyback

Control Mode

CURRENT-MODE

Frequency - Switching

Up to 500kHz

Input Voltage (Max)

30V

Control Technique

PULSE WIDTH MODULATION

Rise Time

In electronics, when describing a voltage or current step function, rise time is the time taken by a signal to change from a specified low value to a specified high value.

50ns

Synchronous Rectifier

Synchronous rectification is a technique for improving the efficiency of rectification by replacing diodes with actively controlled switches, usually power MOSFETs or power bipolar junction transistors (BJT).

No

Fall Time (Typ)

50 ns

Switcher Configuration

SINGLE

Max Frequency

500kHz

Max Duty Cycle

50 %

Duty Cycle (Max)

48%

Length

4.9mm

Width

3.9mm

RoHS Status

RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.

ROHS3 Compliant

Lead Free

Lead Free