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Details for UC3844AD by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Power Management
IC CURRENT MODE PWM CTRL 30V SOIC-14
UC3844AD image

UC3844AD by Texas Instruments

IC CURRENT MODE PWM CTRL 30V SOIC-14
Features
Automatic Feedforward Compensation
Double Pulse Suppression
Enhanced Load Response Characteristics
High-Current Totem Pole Output
Internally-Trimmed Bandgap Reference
Low Start-Up Current (< 0.5 mA)
Optimized for Off-Line and DC-DC Converters
Pulse-by-Pulse Current Limiting
Trimmed Oscillator Discharge Current
Undervoltage Lockout With Hysteresis
Up to 500-kHz Operation
Part Information
UC3844AD image
RoHS Compliant
Description
The UCx84xA family of control ICs is a pin-for-pin compatible improved version of the UCx84x family. Providing the necessary features to control currentmode or switched-mode power supplies, this family of devices has many improved features: startup current is less than 0.5 mA, oscillator discharge is trimmed to 8.3 mA, and during UVLO, the output stage can sink at least 10 mA at less than 1.2 V for VCC over 5 V.
Specifications
Input Voltage:
25V
Output Voltage:
15V
Output Current:
200mA
Supply Voltage Min:
12V
Supply Voltage Max:
25V
Controller IC Case Style:
SOIC
No. of Pins:
14Pins
Frequency:
500kHz
Operating Temperature Min:
0°C
Operating Temperature Max:
70°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
Yes
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (27-Jun-2018)
Base Number:
3844
Controller Type:
PWM
Input Current:
11mA
Operating Temperature Range:
0°C to +70°C
Output Current Max:
1A
Output Energy per Cycle:
5µJ
Output Type:
Totem Pole
Power Dissipation Pd:
1W
Supply Voltage Range:
12V to 25V
Termination Type:
Surface Mount Device
Alternate Descriptions
Current Mode PWM Cntrlr 1A 14-Pin SOIC RS Components
Current Mode PWM Controller 1A 14-Pin SOIC Tube Avnet America
Current Mode PWM Controller 1A 14-Pin SOIC Tube Avnet Europe