Texas Instruments UC3844N
- Part Number:
- UC3844N
- Manufacturer:
- Texas Instruments
- Ventron No:
- 3248576-UC3844N
- Description:
- Single ended 500KHz current mode PWM controller with 16V/10V UVLO 50% duty cycle, 0C to 70C
- Datasheet:
- uc3844
- TopologyBoost
- Control modePeak current mode
- Duty cycle (max) (%)50
- Switching frequency (max) (kHz)500
- FeaturesAdjustable switching frequency
- UVLO thresholds on/off (V)16/10
- Operating temperature range (°C)0 to 70
- RatingCatalog
- Gate drive (typ) (A)1
- Vin (max) (V)28
The UCx84x series of control integrated circuits provide the features that are necessary to implement off-line or DC-to-DC fixed-frequency current-mode control schemes, with a minimum number of external components. The internally implemented circuits include an undervoltage lockout (UVLO), featuring a start-up current of less than 1 mA, and a precision reference trimmed for accuracy at the error amplifier input. Other internal circuits include logic to ensure latched operation, a pulse-width modulation (PWM) comparator that also provides current-limit control, and a totem-pole output stage that is designed to source or sink high-peak current. The output stage, suitable for driving N-channel MOSFETs, is low when it is in the off state.
The UCx84x family offers a variety of package options, temperature range options, choice of maximum duty cycle, and choice of turnon and turnoff thresholds and hysteresis ranges. Devices with higher turnon or turnoff hysteresis are ideal choices for off-line power supplies, while the devices with a narrower hysteresis range are suited for DC-DC applications. The UC184x devices are specified for operation from –55°C to 125°C, the UC284x series is specified for operation from –40°C to 85°C, and the UC384x series is specified for operation from 0°C to 70°C.
TEXAS INSTRUMENTS UC3844NPWM Controller, 30V-10V supply, 450 kHz, 13.5V/1A out, DIP-8
PWM CONTROLLER, 500KHZ, 10V-30V, PDIP-8; Input Voltage: 25V; Output Voltage: 13.5V; Output Current: 1A; Supply Voltage Min: 10V; Supply Voltage Max: 30V; Controller IC Case Style: DIP; No. of Pins: 8Pins; Frequency: 450kHz; Operating Temperature Min: 0°C; Operating Temperature Max: 70°C; Product Range: -; Automotive Qualification Standard: -; RoHS Phthalates Compliant: Yes; MSL: -; SVHC: No SVHC (27-Jun-2018); Controller Type: PWM; Input Current: 11mA; Output Energy per Cycle: 5µJ; Output Type: Totem Pole; Power Dissipation Pd: 1W; Termination Type: Through Hole
Latest News
-
28 September 2023
MPSA56 PNP General Purpose Transistor: Features, Working Principle and Application
Ⅰ. Overview of MPSA56Ⅱ. Symbol and footprint of MPSA56Ⅲ. Technical parametersⅣ. Features of MPSA56Ⅴ. Pinout and package of MPSA56Ⅵ. How does MPSA56 work?Ⅶ. How does the MPSA56 transistor... -
28 September 2023
TIP35C Footprint, Package, Application and Other Details
Ⅰ. Overview of TIP35CⅡ. Symbol and footprint of TIP35CⅢ. Technical parametersⅣ. Features of TIP35CⅤ. Pinout and package of TIP35CⅥ. Working principle of TIP35C audio power amplifierⅦ. Application of... -
07 October 2023
An Introduction to TDA7266SA Dual Bridge Amplifier
Ⅰ. What is TDA7266SA?Ⅱ. Symbol, footprint and pin connection of TDA7266SAⅢ. Technical parametersⅣ. Features of TDA7266SAⅤ. How to configure the gain of TDA7266SA?Ⅵ. How is the short circuit... -
07 October 2023
How does IRF640 differ from IRF740?
Ⅰ. What is MOSFET?Ⅱ. Overview of IRF640Ⅲ. Overview of IRF740Ⅳ. IRF640 vs IRF740: SymbolⅤ. IRF640 vs IRF740: Technical parametersⅥ. IRF640 vs IRF740: FeaturesⅦ. IRF640 vs IRF740: Working principleⅧ....
Help you to save your cost and time.
Reliable package for your goods.
Fast Reliable Delivery to save time.
Quality premium after-sale service.