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

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

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