AP63203WU
Synchronous Buck ConverterThe AP63203WU is a synchronous buck converter from Diodes Incorporated. View the full AP63203WU datasheet below including key specifications, absolute maximum ratings.
AP63203WU shares its datasheet with AP63203, whose page lists every part number it covers.
Official AP63203WU datasheet (PDF) — the source this page was extracted from.
AP63203WU Key Specifications
| Parameter | Value |
|---|---|
| EN Threshold | 1.18V rising / 1.10V falling |
| Operating Mode | PWM/PFM |
| Output Current | 2A continuous |
| Output Voltage | 3.3V (fixed) |
| Minimum On Time | 80ns |
| Soft-Start Time | 4ms |
| Low-Side RDS(On) | 68mΩ |
| Shutdown Current | 1μA typ (3μA max) |
| Thermal Shutdown | +160°C |
| High-Side RDS(On) | 125mΩ |
| Quiescent Current | 22μA typ |
| Reference Voltage | 0.8V ±1% (adjustable variants) |
| Peak Current Limit | 2.8A typ |
| Input Voltage Range | 3.8V to 32V |
| Switching Frequency | 1.1MHz |
| UVLO Rising Threshold | 3.5V typ |
| Efficiency At Light Load | up to 88% at 5mA |
| Feedback/Output Accuracy | 3.27V to 3.33V |
| Frequency Spread Spectrum | ±6% |
| Operating Ambient Temperature | -40°C to +85°C |
AP63203WU Overview
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
AP63203WU Features
- 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:
- No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
- 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.
- 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
AP63203WU 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
AP63203WU Pin Configuration
AP63203WU Absolute Maximum Ratings
| Symbol | Parameter | Rating | Unit |
|---|---|---|---|
| V IN | Supply Voltage | -0.3 to +35.0 (DC) | V |
| V IN | Supply Voltage | -0.3 to +40.0 (400ms) | V |
| V SW | Switch Node Voltage | -1.0 to V IN + 0.3 | V |
| V BST | Bootstrap Voltage | V SW - 0.3 to V SW + 6.0 | V |
| V FB | Feedback Voltage | -0.3V to +6.0 | V |
| V EN | Enable/UVLO Voltage | -0.3V to +35.0 | V |
| T ST | Storage Temperature | -65 to +150 | ° C |
| T J | Junction Temperature | +160 | ° C |
| T L | Lead Temperature | +260 | ° C |
| ESD Susceptibility (Note 5) | ESD Susceptibility (Note 5) | ESD Susceptibility (Note 5) | ESD Susceptibility (Note 5) |
| HBM | Human Body Mode | 2000 | V |
| CDM | Charge Device Model | 1000 | V |
Notes:
-
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.
-
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.
AP63203WU Recommended Operating Conditions
| Symbol | Parameter | Min | Max | Unit |
|---|---|---|---|---|
| V IN | Supply Voltage | 3.8 | 32 | V |
| T A | Operating Ambient Temperature Range | -40 | +85 | ° C |
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.)
| Symbol | Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| I SHDN | Shutdown Supply Current | V EN = 0V | - | 1 | 3 | μA |
| I Q | Supply Current (Quiescent) | AP63201: V EN = OPEN, V FB = 1.0V | - | 258 | - | μA |
| I Q | Supply Current (Quiescent) | AP63200/AP63203/AP63205: V EN = OPEN, V FB = 1.0V | - | 22 | - | μA |
| UVLO | V IN Under Voltage Threshold (Rising) | - | 3.30 | 3.50 | 3.70 | V |
| UVLO | V IN Under Voltage Threshold Hysteresis | - | - | 440 | - | mV |
| R DS(ON)1 | High-Side Switch On-Resistance (Note 8) | - | - | 125 | - | mΩ |
| R DS(ON)2 | Low-Side Switch On-Resistance (Note 8) | - | - | 68 | - | mΩ |
| I PEAK_LIMIT | HS Peak Current Limit (Note 8) | - | 2.5 | 2.8 | 3.1 | A |
| I VALLEY_LIMIT | LS Valley Current Limit (Note 8) | - | 2.5 | 3.2 | 3.9 | A |
| f SW | Oscillator Frequency | AP63200/AP63201 | - | 500 | - | kHz |
| f SW | Oscillator Frequency | AP63203/AP63205 | - | 1100 | - | kHz |
| FSS | Frequency Spread Spectrum | - | - | ±6 | - | % |
| t ON | Minimum On Time | - | - | 80 | - | ns |
| V FB | Feedback Voltage | CCM, AP63200/AP63201 | 792 | 800 | 808 | mV |
| V FB | Feedback Voltage | CCM, AP63203 | 3.27 | 3.30 | 3.33 | V |
| V FB | Feedback Voltage | CCM, AP63205 | 4.95 | 5.00 | 5.05 | V |
| V EN_H | EN Logic High | - | 1.15 | 1.18 | 1.23 | V |
| V EN_L | EN Logic Low | - | 1.05 | 1.10 | 1.15 | V |
| I EN | EN Input Current | V EN = 1.5V | - | 5.5 | - | μA |
| I EN | EN Input Current | V EN = 1V | - | 1.5 | - | μA |
| t SS | Soft-Start Period | - | - | 4 | - | ms |
| T SD | Thermal Shutdown (Note 8) | - | - | +160 | - | ° C |
| T HYS | Thermal Hysteresis (Note 8) | - | - | +25 | - | ° C |
Note: 8. Compliance to the datasheet limits is assured by one or more methods: production test, characterization, and/or design.
AP63203WU Thermal Information
| Symbol | Parameter | Rating | Rating | Unit |
|---|---|---|---|---|
| θ JA | Junction to Ambient | TSOT26 | 89 | ° C/W |
| θ JC | Junction to Case | TSOT26 | 39 | ° C/W |
Note: 6. Test condition for TSOT26: Device mounted on FR-4 substrate, single-layer PC board, 2oz copper, with minimum recommended pad layout.
AP63203WU Typical Application
Figure 1. Typical Application Circuit
Figure 2. Efficiency vs. Output Current
AP63203WU Package Information
Please see http://www.diodes.com/package-outlines.html for the latest version.
Other Switching Regulators (Buck)
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- TPS562200 – Texas Instruments, Synchronous Buck Converter
- AP63357DV-7 – Diodes Incorporated, Synchronous Buck Converter
- MP2344GJ-Z – Monolithic Power Systems, Synchronous Step-Down Converter
- MP1584EN – Monolithic Power Systems, Buck Converter
All Switching Regulators (Buck) datasheetsAll Diodes datasheets (217)
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