BL8089数据手册Belling中文资料规格书

描述 Description

The BL8089 is a power management unit (PMU), with 2 synchronous Bucks and 2 CMOS low-dropout regulators that delivers a maximum current of 1.5A for Buck’s output and a maximum current of 0.5A for each individual LDO’s output.The synchronous buck is a high-efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version. Supply current with no load is 40uA and drops to Each of the 2 LDOs is low-dropout regulator that delivers a maximum current of 0.5A individual output. Typical dropout voltage at 0.5A load current is 0.8V. They have excellent load and line transient response and good temperature characteristics, which can assure the stability of chip and power system. The output accuracy of each channel is set within 2% by trimming.Typical LDO output voltage: VO1=1.2V, VO2=1.8V.Other fixed voltage can be provided in the range of 1.0V~4.5V every 0.1V step. It also can be customized on command. LDOs can also work under a wide input voltage ranging from 1.8V to 6V. They can provide foldback short-circuit protection and output current limit function.BL8089 is available in lead (Pb)-free QFN3x3-16

特性 Features

• High Efficiency : Up to 96%

• Capable of Delivering 1.5A

• 1.5MHz Switching Frequency

• No External Schottky Diode Needed

• Low dropout 100% Duty operation

• PFM Mode for High Efficiency in Light Load

• Over temperature Protected

• Low Quiescent Current: 40μA

• Short Circuit Protection

• Inrush Current Limit and Soft Start

• LDO

• Max output current for each channel is 0.5A

• Input voltage range: 1.8 – 6V

• Output voltage range: 1.0V~4.5V (customized on command every 0.1V step)

• Low power consumption: 50uA (Typ.)

• Low output noise (47uVRMS)

• Standby Mode: 0.1uA

• Low dropout voltage:

• 600mV@IO1=250mA, VO1=1.2V

• 800mV@IO2=500mA, VO2=1.8V

• High ripple rejection:65dB@1KHz (Typ.)

• Low temperature coefficient: ±100ppm/C

• Excellent line regulation: 0.05%/V

• Highly accurate: ±2%

• Output current limit

• Fold-back short circuit current