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Details for UC3845AD by Texas Instruments
Electronic & Electrical Components > Semiconductors - ICs > Power Management
UC3845AD
Buy Directly from Texas Instruments (4074 in stock) $0.4250
PWM CONTROLLER CURRENT MODE SMD
UC3845AD image

UC3845AD by Texas Instruments

PWM CONTROLLER CURRENT MODE SMD

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

UC3845AD 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.

Technical Specifications

Input Voltage:
25V
Output Voltage:
5.1V
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:
3845
Controller Type:
PWM
IC Temperature Range:
Commercial
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
30V,1A, 500KHz current mode PWM controller with 8.4V/7.6V UVLO 50% duty cycle, 0°C to 70°C Texas Instruments
In a Pack of 5, Texas Instruments UC3845AD PWM Akım Modu Kontrolcü Entegresi, 1 A, 500 kHz, 14-Pinli SOIC RS Components TR
Current Mode PWM Cntrlr 1A 14-Pin SOIC RS Components IT