Texas Instruments UCC38C44DR
- Part Number:
- UCC38C44DR
- Manufacturer:
- Texas Instruments
- Ventron No:
- 3246957-UCC38C44DR
- Description:
- Commercial, 20-V, low-power current-mode PWM controller, 14.5-V/9-V UVLO, 50% duty cycle
- Datasheet:
- ucc38c44
- TopologyBoost
- Control modeCurrent
- Duty cycle (max) (%)50
- Switching frequency (max) (kHz)1000
- FeaturesAdjustable switching frequency
- UVLO thresholds on/off (V)14.5/9
- Operating temperature range (°C)0 to 70
- RatingCatalog
- Gate drive (typ) (A)1
- Vin (max) (V)18
The UCCx8C4x family are high-performance, current-mode PWM controllers. The UCCx8C4x is an enhanced BiCMOS version with pin-for-pin compatibility to the industry standard UCx84xA family and UCx84x family of PWM controllers. The BiCMOS technology offers lower power consumption to improve efficiency as well as faster current sense and oscillator frequency.
In addition, lower startup voltage versions of 7 V are offered as UCCx8C40 and UCCx8C41 for use in battery systems. The UCC28C4x series is specified for operation from –40°C to 125°C, and the UCC38C4x series is specified for operation from 0°C to 85°C.
Providing necessary features to control fixed frequency, peak current-mode power supplies, this family offers the following performance advantages. The device offers high-frequency operation up to 1 MHz, suitable for high speed applications. The trimmed discharge current enables more precise programming of the maximum duty cycle and dead-time limit when compared to the UCCx8C4x family. Reduced start-up and operating currents minimizes start-up loss and low operating power consumption for improved efficiency. The device also features a fast current-sense-to-output delay time of 35 ns for superior overload protection at the power switch, and a ±1-A peak output current capability with improved rise and fall times for driving large external MOSFETs directly.
The UCCx8C4x family is offered in 8-pin VSSOP (DGK) and 8-pin SOIC (D) packages.
Commercial, 20-V, low-power current-mode PWM controller, 14.5-V/9-V UVLO, 50% duty cycle 8-SOIC 0 to 85
Switching Controller, Current-mode, 1A, 1000kHz Switching Freq-Max, BICMOS, PDSO8
PWM Power Supply Controllers BiCMOS Low-Power Current Mode
UCC38C44 Boost Flyback Forward Converter Tape & Reel (TR) e4 DC to DC switching controller 20ns 200mA 72.603129mg 18V
DIODE ARRAY SCHOTTKY 40V SOT323
Pulse Width Modulation (PWM) Controller IC; Frequency:1000kHz; No. of Pins:8; Operating Temperature Range:0°C to 70°C; Control Mode:Current; Leaded Process Compatible:Yes; Number of PWM Outputs:1; Output Current:200mA ;RoHS Compliant: Yes
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