1. Product Identification & Overview

️· Product: AP3765K6TR-G1 (likely a DC-DC converter or power management IC)
️· Manufacturer: BCD Semiconductor Manufacturing Limited
️· Website: [http://www.bcdsemi.com](http://www.bcdsemi.com)
️· RoHS Compliant and "Green": Products with a "G1" suffix are RoHS compliant and considered "Green."

2. Package and Ordering Information

️· Package Type: SOT-23-6
️· Dimensions (SOT-23-6): See the drawing at the end of the document for dimensional specifications (in mm/inch).
️· Marking ID: GBB
️· Temperature Range: -40 to 85°C
️· Packing Type: Tape & Reel (TR)

3. Absolute Maximum Ratings

️· Supply Voltage (VCC): -0.3 to 36V
️· Voltage at CS, OUT to GND: -0.3 to 7V
️· FB Input: -40 to 10V
️· Output Current (OUT): Internally limited
️· Junction Temperature: 150°C
️· Storage Temperature: -65 to 150°C
️· Lead Temperature (Soldering): 300°C (for 10 seconds)
️· Thermal Resistance (Junction-to-Ambient): 250°C/W
️· ESD Ratings (Machine Model): 200V
️· ESD Ratings (Human Body Model): 2000V

4. Electrical Characteristics (Typical Performance)

This section lists many electrical parameters and their typical values. Here's a selection of key characteristics:

️· UVLO Section:
- Start-up Threshold (VTH): 16-21V
- Minimal Operating Voltage (VOPR): 7.2-10.2V
️· Standby Current Section:
- Start-up Current (IST): 0.6µA
- Operating Current (ICC(OPR)): 200-320µA
️· Drive Output Section:
- OUT Maximum Current (Sink): 50mA
- OUT Maximum Current (Source): 30mA
️· Current Sense Section:
- Current Sense Threshold (VCS): 455-545mV
- Pre-Current Sense (VCS(PRE)): 365-455mV
- Leading Edge Blanking: 750ns
️· Feedback Input Section:
- FB Input Leakage Current (IFB): 2.0-3.1µA
- Feedback Threshold (VFB): 3.89-4.01V

5. Figures & Graphs

The document includes several figures:

️· Figure 1: Start-up Voltage vs. Ambient Temperature
️· Figure 2: Minimal Operating Voltage vs. Ambient Temperature
️· Figure 5: Operating Current vs. Ambient Temperature
️· Figure 8: I_FB vs. Ambient Temperature
️· Figure 8: 5V/700mA Output for Battery Charger of Mobile Phone (Application Circuit)

6. Application Circuit

️· Figure 8 shows an application circuit for a mobile phone battery charger, providing a 5V/700mA output. R7 and Rs are components listed in the application circuit diagram.

Key takeaways:

️· The AP3765 is designed for applications requiring efficient power conversion, such as battery chargers.
️· It features UVLO (Under Voltage Lockout) for protection and incorporates a blanking time for current sensing.
️· The documentation provides detailed electrical characteristics and graphs to understand its performance under different conditions.