Renesas ISL9305IRTWBNLZ-T

降压（2），线性（LDO）（2）41.2V，800mA1.5V ~ 5.5V

Overview

The ISL9305IRTWBNLZ-T is an integrated mini Power Management IC (mini-PMIC) ideal for applications of powering low-voltage microprocessor or multiple voltage rails with battery as input sources, such as a single Li-ion or Li-Polymer. ISL9305IRTWBNLZ-T integrates two high-efficiency 3MHz synchronous step-down converters (DCD1 and DCD2) and two low-input, low-dropout linear regulators (LDO1 and LDO2). The 3MHz PWM switching frequency allows the use of very small external inductors and capacitors. Both step-down converters can enter skip mode under light load conditions to further improve the efficiency and maximize the battery life. For noise sensitive applications, they can also be programmed through I2C interface to operate in forced PWM mode regardless of the load current condition. The I2C interface supports on-the-fly slew rate control of the output voltage from 0.825V to 3.6V at 25mV/step size for dynamic power saving. Each step-down converter can supply up to 800mA load current. The default output voltage can be set from 0.8V to VIN using external feedback resistors on the adjustable version, or the ISL9305IRTWBNLZ-T can be ordered in factory pre-set voltage options from 0.9V to 3.6V in 50mV step. The ISL9305IRTWBNLZ-T also provides two 300mA low dropout (LDO) regulators. The input voltage range is 1.5V to 5.5V allowing them to be powered from one of the on-chip step-down converters or directly from the battery. The default LDO power-up output comes with factory pre-set fixed output voltage options between 0.9V to 3.3V. The ISL9305IRTWBNLZ-T is available in a 4mmx4mm 16 Ld TQFN package.

Features

Tape & Reel (TR) Package
4 outputs
Peak Reflow Temperature: 260
Supply voltage range: 3.3V
Quiescent Current: 50μA

Surface Mount Mounting Type

Applications

There are a lot of Intersil (Renesas Electronics America)
ISL9305IRTWBNLZ-T Linear Regulator Controllers applications.

• Constant high-current source
• Low parts count 5.0V to 3.3V computer supply
• Low noise SMPS post regulator
• Low-dropout SMPS post regulator
• High-current, current-limited switch
• Dual/Triple Power Supplies
• Desknotes and Notebooks
• Graphic Cards
• Ultra-Low-Dropout
• Voltage Regulators