Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.
SOT26-Chip-Image.pngNRND = Not Recommended for New Design
Step-up DC-DC converter
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The AP1603 is a high efficiency step-up DC/DC converter for applications using as few as a single NiMH or Li-Ion battery cells. Only four external components are required to deliver a fixed output voltage of 3.3V. The AP1603 starts up from less than 0.9V input with 1mA load. Pulse Frequency Modulation scheme brings optimized performance for applications with light output loading and low input voltages. The output ripple and noise are lower compared with the circuits operating in PSM mode. The PFM control circuit operating in 150KHz (max.) switching rate results in smaller passive components. The space saving SOT26 packages make the AP1603 an ideal choice of DC/DC converter for space conscious applications, like pagers, electronic cameras, and wireless microphones.
| MinimumInput Voltage (V) | 0.9 V |
|---|---|
| MaximumInput Voltage (V) | 5.5 V |
| Minimum Output Voltage (V) | 2 V |
| Maximum Output Voltage (V) | 5.5 V |
| HS RDS(ON) (mΩ) | N/A mΩ |
| LS RDS(ON) (mΩ) | 600 mΩ |
| Quiescent Current Typ (mA) | 0.016 mA |
| Shutdown Current Typ (µA) | 0.07 µA |
| Type | Boost |
| Output Current (mA) | 0.2 A |
| Frequency Typ (Hz) | 150K Hz |
| Efficiency (%) | 90 % |
A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.
| PCN # | Issue Date | Implementation Date | Subject |
|---|---|---|---|
| PCN-2672 | 2024-03-11 | 2024-09-07 | Device End of Life (EOL) |
| PCN-2654 | 2024-02-15 | 2024-04-28 | Device End of Life (EOL) |
