Current Mode Pwm Controller Uc3845b
₨ 45.00
The UC3845B is a high-performance fixed-frequency current mode PWM controller designed for Off-Line and DC-to-DC converter applications. With minimal external components required, it provides a cost-effective and efficient solution for power control. Its compact 8-pin DIP/SOIC package makes it ideal for space-constrained designs.
UC3845B Current Mode PWM Controller IC – High-Performance 8-Pin PWM Controller
The UC3845B is a high-performance fixed-frequency current mode PWM controller designed for Off-Line and DC-to-DC converter applications. With minimal external components required, it provides a cost-effective and efficient solution for power control. Its compact 8-pin DIP/SOIC package makes it ideal for space-constrained designs.
This IC integrates key power management functions including a precision oscillator, current sensing, error amplification, and a high-current totem pole output, making it ideal for driving Power MOSFETs.
Key Features of UC3845B PWM Controller:
-
✅ Trimmed internal oscillator for precise frequency control
-
✅ Fixed oscillator frequency guaranteed at 250 kHz
-
✅ Current mode operation up to 500 kHz switching frequency
-
✅ Adjustable output deadtime (50% to 70%)
-
✅ Latching PWM for cycle-by-cycle current limiting
-
✅ Undervoltage lockout (UVLO) with hysteresis
-
✅ High current totem pole output driver (±1A)
-
✅ Low startup and operating current
-
✅ Internal thermal and short circuit protection
-
✅ Ideal for DC-DC Converters, SMPS, and power supplies
Technical Specifications:
| Parameter | Value |
|---|---|
| Supply Voltage (low impedance) | Up to 30V |
| Output Current | ±1A |
| Oscillator Frequency | 250kHz (guaranteed) |
| Max Switching Frequency | Up to 500kHz |
| Power Dissipation (DIP) | 1.25W |
| Operating Temperature | –40°C to +150°C |
| Storage Temperature | –65°C to +150°C |
| Package | 8-Pin DIP/SOIC |
| Startup Current | Low |
Applications:
-
✔️ DC-DC Converters
-
✔️ Switch Mode Power Supplies (SMPS)
-
✔️ Battery Chargers
-
✔️ Power Management Systems
-
✔️ Motor Control Circuits
Package Includes:
-
1 x UC3845B Current Mode PWM Controller IC (8-Pin)
MAECENAS IACULIS
Vestibulum curae torquent diam diam commodo parturient penatibus nunc dui adipiscing convallis bulum parturient suspendisse parturient a.Parturient in parturient scelerisque nibh lectus quam a natoque adipiscing a vestibulum hendrerit et pharetra fames nunc natoque dui.
ADIPISCING CONVALLIS BULUM
- Vestibulum penatibus nunc dui adipiscing convallis bulum parturient suspendisse.
- Abitur parturient praesent lectus quam a natoque adipiscing a vestibulum hendre.
- Diam parturient dictumst parturient scelerisque nibh lectus.
Scelerisque adipiscing bibendum sem vestibulum et in a a a purus lectus faucibus lobortis tincidunt purus lectus nisl class eros.Condimentum a et ullamcorper dictumst mus et tristique elementum nam inceptos hac parturient scelerisque vestibulum amet elit ut volutpat.
Related products
Ams1117-3.3 Dc Voltage Regulator 3pin Step-down Power Supply Module In Pakistan
BC548 NPN Transistor – Versatile and Reliable Transistor in Pakistan
BC557 PNP Transistor – High-Quality General Purpose Transistor in Pakistan
Reviews
There are no reviews yet.