Maxim Integrated Himalaya series MAX17503ATP+ is a step-down (buck) DC-DC converter with synchronous rectification, adjustable 0.9V–54V output at 2.5A, 4.5V–60V input range, 100kHz–2.2MHz switching frequency, in a 20-TQFN (4x4 mm) surface-mount package, -40°C to +125°C junction temperature.
| Parameter | Value |
|---|---|
| Series | Himalaya |
| Output type | Adjustable |
| Mounting type | Surface Mount |
| Voltage - input | 4.5V |
| Voltage - output | 54V |
| Voltage - output (Min (Fixed)) | 0.9V |
| Current - output | 2.5A |
| Frequency | 100kHz ~ 2.2MHz |
| Number of outputs | 1 |
| Operating temperature | -40°C ~ 125°C (TJ) |
| Package | Tube |
| Function | Step-Down |
| Topology | Buck |
| Case | 20-WFQFN Exposed Pad |
| Output configuration | Positive |
| Synchronous rectifier | Yes |
The MAX17503ATP+ is a member of Maxim Integrated's (now Analog Devices) Himalaya series of step-down (buck) DC-DC converters. It integrates a synchronous rectifier, eliminating the external Schottky diode that non-synchronous bucks require.
For the BOM line, this is a low-risk procurement: no date-code window to chase, no premium for end-of-life stock.
Yes, the MAX17503ATP+ includes an integrated synchronous rectifier, which eliminates the need for an external catch diode and improves efficiency at higher output currents.
The MAX17503ATP+ is designed with internal compensation, so no external RC network is needed for the control loop — the datasheet application circuit typically shows only the inductor, input/output capacitors, and feedback divider.