AP63203WU

Part: AP63200/AP63201/AP63203/AP63205 from Diodes Incorporated

Type: Synchronous Buck Converter

Description: 2A, synchronous buck converter with a 3.8V to 32V input voltage range, integrated 125mΩ high-side and 68mΩ low-side power MOSFETs, and enhanced EMI reduction features.

Operating Conditions:

• Supply voltage: 3.8–32 V
• Operating temperature: -40 to +85 °C
• Max continuous output current: 2 A
• Switching frequency: 500 kHz (AP63200/AP63201) or 1.1 MHz (AP63203/AP63205)

Absolute Maximum Ratings:

• Max supply voltage: +35.0 V (DC)
• Max continuous current: 2 A (Output, Peak Current Limit up to 3.1 A)
• Max junction temperature: +160 °C

Key Specs:

• Quiescent Current (AP63200/AP63203/AP63205): 22 μA (Typ, V EN = OPEN, V FB = 1.0V)
• High-Side Switch On-Resistance: 125 mΩ (Typ)
• Low-Side Switch On-Resistance: 68 mΩ (Typ)
• HS Peak Current Limit: 2.5 A (Min) to 3.1 A (Max)
• Oscillator Frequency (AP63200/AP63201): 500 kHz (Typ)
• Oscillator Frequency (AP63203/AP63205): 1100 kHz (Typ)
• Feedback Voltage (AP63200/AP63201): 800 mV (Typ, ±1% accuracy)
• Thermal Shutdown: +160 °C (Typ)

Features:

• VIN 3.8V to 32V
• 2A Continuous Output Current
• 0.8V ± 1% Reference Voltage
• 22μA Ultralow Quiescent Current
• Frequency Spread Spectrum (FSS) to Reduce EMI
• Proprietary Gate Driver Design for Best EMI Reduction
• Protection Circuitry (Overvoltage Protection, Cycle-by-Cycle Peak Current Limit, Thermal Shutdown)
• Supports Pulse Width Modulation (PWM) Regardless of Output Load (AP63201)
• Supports Pulse Frequency Modulation (PFM) (AP63200, AP63203, and AP63205)

Applications:

• 12V and 24V distributed power bus supplies
• Flat screen TV sets and monitors
• Power tools and laser printers
• White goods and small home appliances
• FPGA, DSP, and ASIC supplies
• Home audios
• Network systems
• Set top boxes
• Gaming consoles
• Consumer electronics

Package:

• TSOT26

• VIN 3.8V to 32V
• 2A Continuous Output Current
• 0.8V ± 1% Reference Voltage
• 22μA Ultralow Quiescent Current
• Switching Frequency
• o 500kHz: AP63200 and AP63201
• o 1.1MHz: AP63203 and AP63205
• Pulse Width Modulation (PWM) Regardless of Output Load
• o AP63201
• Supports Pulse Frequency Modulation (PFM)
• o AP63200, AP63203, and AP63205
• o Up to 80% Efficiency at 1mA Light Load
• o Up to 88% Efficiency at 5mA Light Load
• Fixed Output Voltage
• o 3.3V: AP63203
• o 5.0V: AP63205
• Proprietary Gate Driver Design for Best EMI Reduction
• Frequency Spread Spectrum (FSS) to Reduce EMI
• Precision Enable Threshold to Adjust UVLO
• Protection Circuitry
• o Overvoltage Protection
• o Cycle-by-Cycle Peak Current Limit
• o Thermal Shutdown
• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
• Halogen and Antimony Free. 'Green' Device (Note 3)
• An automotive-compliant part is available under separate datasheet (AP63200Q/AP63201Q/AP63203Q/AP63205Q)

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated's definitions of Halogen- and Antimony-free, "Green" and Lead-free.
3. Halogen- and Antimony-free "Green' products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds.

TSOT26

• 12V and 24V distributed power bus supplies
• Flat screen TV sets and monitors
• Power tools and laser printers
• White goods and small home appliances
• FPGA, DSP, and ASIC supplies
• Home audios
• Network systems
• Set top boxes
• Gaming consoles
• Consumer electronics

Notes:

1. Stresses greater than those listed under 'Absolute Maximum Ratings' can cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under 'Recommended Operating Conditions' is not implied. Exposure to 'Absolute Maximum Ratings' for extended periods can affect device reliability.

2. Semiconductor devices are ESD sensitive and can be damaged by exposure to ESD events. Suitable ESD precautions should be taken when handling and transporting these devices.

Note: 7. The device function is not guaranteed outside of the recommended operating conditions.

Electrical Characteristics (TA = +25° C, VIN = 12V, unless otherwise specified. Min/Max limits apply across the recommended ambient temperature range, -40° C to +85° C, and input voltage range, 3.8V to 32V.)

Note: 8. Compliance to the datasheet limits is assured by one or more methods: production test, characterization, and/or design.

Note: 6. Test condition for TSOT26: Device mounted on FR-4 substrate, single-layer PC board, 2oz copper, with minimum recommended pad layout.

Figure 1. Typical Application Circuit

Figure 2. Efficiency vs. Output Current

Please see http://www.diodes.com/package-outlines.html for the latest version.