SQ25001QEQ

60V Synchronous 4-switch Buck-Boost Controller

SQ25001QEQ 60V Synchronous 4-switch Buck-Boost Controller Datasheet

Parameters
Features
Description

Part number	SQ25001QEQ
Channel(#)	1
Vin (min) (V)	6
Vin (max) (V)	60
Topology	Buck-Boost
Switching frequency (min)(kHz)	150
Switching frequency (max)(kHz)	400
Vout (min) (V)	4.5
Vout2 (min)(V)
Vout (max) (V)	28
Vout2 (max )(V)
Vref accuracy (±%)	1.5
Vout accuracy(±%)
Control mode	Current control
Duty cycle (max)(%)
Operation mode	PFM/FCCM
Iq (typ) (uA)	2500
Features	Enable,Power good,Adjustable soft-start,UVP with hiccup,UVP with latch,OVP,External bias input,Low ISD,Adjustable switching frequency,Spread spectrum,Cycle by cycle overcurrent protection,Forced PWM,Pre-bias startup,Fault indicator
Package	QFN5×5-32
Operating temperature range(°C)	-40 to 125
Functional safety category

• Four-Switch Single Inductor Architecture

• 6V to 60V Input Voltage Range

• 4.5V to 30V Output Voltage Range

• Peak Drive Current > 3A

• 0.8V ±1% Reference Voltage

• Adjustable Switching Frequency from 150kHz to 400kHz

• Adjustable Soft-Start Time

• PWM or PFM Operation Selectable in Light Load

• Smooth Pre-Biased Startup

• Spread-Spectrum Function

• Power Good Indicator

• Fault Indicator

• CBC Current Limit Protection

• Output Voltage Undervoltage, Overvoltage, and Overcurrent Protection

• Thermal Shutdown

• Package: QFN5×5-32

• MSL Rating: MSL3

The SQ25001 is a synchronous four-switch buck-boost DC/DC controller that operates over a wide input voltage range of 6V to 60V. It features three operation modes: Buck, Boost, and Buck-Boost, which allow it to regulate the output voltage from an input voltage that is above, below, or equal to the output voltage. External components can be used to configure the soft-start time, 150kHz-400kHz switching frequency, and 4.5V-30V output voltage.

The SQ25001 can operate in either pulse width modulation (PWM) mode or pulse frequency modulation (PFM) mode under light load conditions, depending on the application's requirements for fast dynamic response or high efficiency. The optional spread spectrum function can help improve system EMI performance. The design features a 5V drive voltage and a peak drive current capability of over 3A, making it suitable for a wide range of industrial applications.

The SQ25001 ensures safe operation in all operating conditions, providing a power good flag, a fault indicator, input undervoltage lockout (UVLO), cycle-by-cycle (CBC) current limit protection, output undervoltage protection (UVP), output overvoltage protection (OVP), output overcurrent protection (OCP), and thermal shutdown to prevent damage to the device and ensure reliable operation.

The SQ25001 is available in a QFN5×5-32 package.

Evaluation Board

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EVB_SQ25001QEQ

EVB File

EVB_SQ25001QEQ is intended for 60V synchronous four-switch Buck-Boost controller.

Technical Documentation

Title	Date
Silergy_Catalog_Q2_2026	2026-06-12