| Part number | SQ27506XNQ |
|---|---|
| Channel(#) | 1 |
| Vin (min) (V) | 3.5 |
| Vin (max) (V) | 36 |
| Switching frequency (min)(kHz) | 300 |
| Switching frequency (max)(kHz) | 2300 |
| Vout (min) (V) | 1 |
| Vout (max) (V) | 34.2 |
| Iout (max) (A) | 6 |
| Vout2 (min)(V) | |
| Vout2 (max )(V) | |
| Iout2 (max)(A) | |
| Vref accuracy (±%) | 2 |
| Vout accuracy(±%) | |
| Control mode | Peak current control |
| Duty cycle (max)(%) | 100.8 |
| Operation mode | PFM |
| Iq (typ) (uA) | 12.5 |
| Features | Enable, Power good, Auto-discharge, Fixed soft-start, Low Iq, Wettable flanks package, UVP with hiccup, OVP, External bias input, Low ISD, Adjustable switching frequency, Spread spectrum, Cycle by cycle overcurrent protection, Frequency synchronization, Pre-bias startup |
| Package | QFN3.5×4-14 |
| Operating temperature range(°C) | -40 to 125 |
| Functional safety category |
The SQ27506 is a high-efficiency synchronous step-down DC-DC regulator featuring internal power and synchronous rectifier switches. It operates with fixed frequency and peak current control across a wide input voltage range of 3.5V to 36V, delivering up to 6A of continuous output current.
The SQ27506 is specifically designed with a symmetric QFN package and adjustable LX rise time to achieve optimal EMI performance. The switching frequency can be adjusted from 300kHz to 2.3MHz, or synchronized to an external clock. The frequency selection allows for compliance with application EMI limits and helps to avoid noise in critical frequency bands.
The SQ27506 offers excellent efficiency across a wide range of applications by providing internal 41mΩ power and 21mΩ synchronous rectifier switches, frequency reduction at light load conditions, and an external bias input. The 1μA shutdown supply current enables the device to be used in battery-powered applications. The SQ27506 ensures safe operation under all conditions, offering cycle-by-cycle current limiting, input under-voltage lockout, internal soft-start, output under-voltage and over-voltage protection, and thermal shutdown.
The SQ27506 is available in a QFN 3.5×4-14 package.
| Title | Date |
|---|---|
| Silergy_Catalog_Q3_2026 | 2026-11-04 |
