SY26522ABC (SQ25052ABC)

0.98V Minimum Input and 5. 5V Maximum Output, 2A Valley Current Synchronous Boost

SY26522ABC 0.98V Minimum Input and 5. 5V Maximum Output, 2A Valley Current Synchronous Boost Datasheet

Parameters
Features
Description

Part number	SY26522ABC
Vin (min) (V)	0.98
Vin (max) (V)	5.5
Current limit (A)	2
Switching frequency (min)(kHz)	1000
Switching frequency (max)(kHz)	1000
Vout (min) (V)	2.8
Vout (max) (V)	5.5
Vref accuracy (±%)	1.5
Vout accuracy(±%)
Duty cycle (max)(%)	86
Iq (typ) (uA)	0.7
Features	Bypass mode,Auto-recovery OVP
Package	SOT23-6
Operating temperature range(°C)	-40 to 125
Functional safety category

0.98V Minimum Input Voltage
Adjustable Output Voltage from 1.8V to 5.5V
Minimum 2A Valley Current Limit
5µA Typical Quiescent Current
Load Disconnect During Shutdown
Low RDS(ON) at 3.3V Output: 100mΩ Main, 170mΩ Synchronous
Output OVP
Auto-Bypass Mode when VIN ≥ VOUT
RoHS-Compliant and Halogen-Free
Compact Package: SOT23-6

The SY26522 is a high efficiency, synchronous step-up Boost converter designed for single-cell lithium (Li-ion or Li-polymer) or two-cell to three-cell nickel (alkaline Ni-Cd or Ni-MH) battery-powered applications. It can operate down to 0.98V input voltage. It uses NMOS for the main switch and PMOS for the synchronous switch.

The SY26522 disconnects the output from the input during shutdown mode. When the input voltage exceeds the regulated output voltage, the SY26522 will enter bypass mode automatically. The low operating current, along with a 0.1µA shutdown current (typ.), makes this device suitable for battery applications where extended battery life is important.