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High Efficiency 2.3A Boost Regulator With Input-to-Output Bypass

封装信息

Lead Count (#) 16
Pkg. Type WLCSP-TKCURDLBC
Pkg. Code WEV
Pitch (mm) 0.4
Pkg. Dimensions (mm) 1.78 x 1.78 x 0.54

环境和出口类别

Moisture Sensitivity Level (MSL) 1
Pb (Lead) Free Yes
ECCN (US) EAR99
HTS (US) 8542390001

产品属性

Pkg. Type WLCSP-TKCURDLBC
Lead Count (#) 16
Carrier Type Reel
Moisture Sensitivity Level (MSL) 1
Pb (Lead) Free Yes
Pb Free Category Pb-Free Ball Terminal (SAC405)-e1
Temp. Range -40 to +85°C
Control Type Current Mode
IQ [Rail 1] (µA) 45
Input Voltage (Max) (V) 5.4
Input Voltage (Max) [Rail 1] (V) 5.4 - 5.4
Input Voltage (Min) (V) 2.35
Input Voltage (Min) [Rail 1] (V) 2.35
Length (mm) 1.8
MOQ 3000
Output Current (Max) [Rail 1] (A) 2.3
Output Voltage (Max) (V) 5.2
Output Voltage (Max) [Rail 1] (V) 5.2
Output Voltage (Min) (V) 3.15
Output Voltage (Min) [Rail 1] (V) 3.15
Outputs (#) 1
POR Yes
Parametric Category Boost Regulators (Integrated FETs)
Peak Efficiency (%) 96
Pitch (mm) 0.4
Pkg. Dimensions (mm) 1.8 x 1.8 x 0.54
Qualification Level Standard
Quiescent Current 45 µA
SYNCH Capability No
Switching Frequency (KHz) 2.9 - 2.9
Switching Frequency Range (Typical) (kHz) 2100 - 2900
Thickness (mm) 0.54
Topology [Rail 1] Boost
Width (mm) 1.8

描述

The ISL91133 is an integrated boost switching regulator for battery-powered applications. The device provides a power supply solution for products using a one-cell Li-ion or Li-polymer battery. The ISL91133 is capable of delivering up to 2.3A output current from VIN = 2.5V and VOUT = 3.3V. The no-load quiescent current is only 108μA in Boost mode and 45μA in Forced Bypass mode, which significantly reduces the standby consumption.

The ISL91133 offers a Bypass mode operation where the output is directly connected to the input through a 38mΩ MOSFET to allow a significantly lower dropout voltage. The Bypass mode can be entered by an external command, or by auto bypass. The Forced Bypass mode allows the output voltage to operate close to the input voltage and improves the efficiency under these conditions.

The ISL91133 is designed to support six fixed output voltages ranging from 3.15V to 5V. A voltage select pin is available for each output variant to scale up the output voltage by a small offset to compensate for the load transient droop. The ISL91133 requires only an inductor and a few external components to operate. The 2.5MHz switching frequency further reduces the size of external components. The ISL91133 is available in a 16-bump, 0.4mm pitch, 1.78mm x 1.78mm WLCSP.