RT8249A RT8249B RT8249C 2Q= 2P= 2N= QFN-20

Brand new RT8249C 2N= QFN-20

 The RT8249A/B/C is a dual-channel step-down, controller generating supply voltages for battery-powered systems. It includes two Pulse-Width Modulation (PWM) controllers adjustable from 2V to 5.5V, and two fixed 5V/3.3V linear regulators. Each linear regulator provides up to 100mA output current and 3.3V linear regulator provides 1% accuracy under 35mA. The RT8249A/B has an oscillator output to driver the external charge pump application. The RT8249C provides a mode selection pin, SKIPSEL, to select Diode-Emulation Mode (DEM) or Audio Skipping Mode (ASM). Other features include on-board power-up sequencing, a power-good output, internal soft-start, and soft-discharge output that prevents negative voltage during shutdown.

Features:

• Support Connected Standby Mode for Ultrabook
• CCRCOT Control with 100ns Load Step Response
• PWM Maximum Duty Ratio > 98%
• 5V to 25V Input Voltage Range
• 2V to 5.5V Output Voltage Range
• 5V/3.3V LDOs with 100mA Output Current
• 1% Accuracy on 3.3V LDO Output
• Oscillator Driving Output for Charge Pump Application
• Internal Frequency Setting
• RT8249A/B : 400kHz/475kHz (CH1/CH2)
• RT8249C : 500kHz/600kHz (CH1/CH2)
• Internal Soft-Start and Soft-Discharge
• 4700ppm/°C RDS(ON) Current Sensing
• Independent Switcher Enable Control
• Built in OVP/UVP/OCP/OTP
• Non-latch UVLO
• Power Good Indicator
• 20-Lead WQFN Package
• RoHS Compliant and Halogen Free

Substitute:

• RT6585A/B

Datasheet:

https://goo.gl/L8Nfg7