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High-Efficiency Buck-Boost Regulator with 4.5A Switches

封装信息

CAD 模型:View CAD Model
Pkg. Type:WLCSP-TKCURDL
Pkg. Code:WNE
Lead Count (#):20
Pkg. Dimensions (mm):2.1 x 1.7 x 0.50
Pitch (mm):0.4

环境和出口类别

Moisture Sensitivity Level (MSL)1
Pb (Lead) FreeYes
ECCN (US)EAR99
HTS (US)8542.39.0090

产品属性

Lead Count (#)20
Carrier TypeReel
Moisture Sensitivity Level (MSL)1
Pitch (mm)0.4
Pkg. Dimensions (mm)2.1 x 1.7 x 0.50
Pb (Lead) FreeYes
Pb Free CategoryPb-Free Ball Terminal (SAC405)-e1
Temp. Range (°C)-40 to +85°C
Country of AssemblyMALAYSIA, TAIWAN
Country of Wafer FabricationTAIWAN
IQ [Rail 1] (µA)30
Input Voltage (Max) (V)5.5
Input Voltage (Max) [Rail 1] (V)5.5 - 5.5
Input Voltage (Min) (V)1.8
Input Voltage (Min) [Rail 1] (V)1.8
Length (mm)2.1
Longevity2033 12月
MOQ3000
Output Current (Max) [Rail 1] (A)3
Output Voltage (Max) (V)5.2
Output Voltage (Max) [Rail 1] (V)5.2
Output Voltage (Min) (V)1
Output Voltage (Min) [Rail 1] (V)1
Outputs (#)1
PORYes
Parametric CategoryBuck-boost Regulators (Integrated FETs)
Peak Efficiency (%)96
Pkg. TypeWLCSP-TKCURDL
Qualification LevelStandard
Quiescent Current30 µA
SYNCH CapabilityNo
Switching Frequency (KHz)2.9 - 2.9
Switching Frequency Range (Typical) (kHz)2500 - 2500
Thickness (mm)0.5
Topology [Rail 1]Buck-Boost
Width (mm)1.7

描述

The ISL91127 and ISL91127IR are high-current buck-boost switching regulators for systems using new battery chemistries. They use Renesas' proprietary buck-boost algorithm to maintain voltage regulation while providing excellent efficiency and very low output voltage ripple when the input voltage is close to the output voltage.

They are capable of delivering at least 2A continuous output current (VOUT = 3.3V) over a battery voltage range of 2.5V to 4.35V. This maximizes the energy utilization of advanced single-cell Li-ion battery chemistries that have significant capacity left at voltages below the system voltage. The ISL91127 and ISL91127IR have a fully synchronous low ON-resistance, 4-switch architecture and a low quiescent current of only 30µA optimize efficiency under all load conditions.

The ISL91127 and ISL91127IR support stand-alone applications with a fixed 3.3V or 3.5V output voltage or adjustable output voltage with an external resistor divider. Output voltages as low as 1.0V or as high as 5.2V are supported.

The ISL91127 is available in a 20-bump, 0.4mm pitch WLCSP (2.15mm x 1.74mm) package, and the ISL91127IR is available in a 20 Ld, 0.5mm pitch QFN (4mm x 4mm) package. The 2.5MHz switching frequency further reduces the size of external components.