Professional IC Distribution & Technical Solutions

The AP3843GP-E1 is a current-mode PWM controller IC manufactured by Diodes Incorporated. Below are the factual specifications, descriptions, and features of the part:

Specifications:

• Input Voltage Range: 8.5V to 30V
• Operating Frequency: 52kHz (fixed)
• Duty Cycle Range: Up to 100%
• Output Drive Current: ±1A (peak)
• Reference Voltage: 5V (±1%)
• Low Startup Current: < 0.5mA
• Low Operating Current: 4mA (typical)
• Undervoltage Lockout (UVLO): 8V (on) / 7.6V (off)
• Current Sense Threshold: 1V
• Package: SOP-8 (DIP-8 compatible)
• Operating Temperature Range: -40°C to +105°C

Descriptions:

The AP3843GP-E1 is a high-performance, fixed-frequency current-mode PWM controller designed for DC-DC converter applications. It provides precise voltage regulation with features such as cycle-by-cycle current limiting, soft-start capability, and undervoltage lockout (UVLO).

Features:

• Current-Mode Control: Improves transient response and simplifies loop compensation.
• Built-in Leading-Edge Blanking: Reduces noise sensitivity in current sensing.
• Automatic Feed-Forward Compensation: Ensures consistent performance across input voltage variations.
• Pulse-by-Pulse Current Limiting: Enhances system reliability.
• Internal Trimmed Bandgap Reference: Ensures high accuracy.
• Latch-Free Operation: Improves fault recovery.
• Compatible with AP3842/3843/3844/3845 Series: Allows design flexibility.

This IC is commonly used in AC-DC adapters, offline power supplies, and DC-DC converters.

(Note: Always refer to the latest datasheet for detailed technical information.)