RT8206BGQW

Product Summary

The RT8206BGQW is a dual step-down, switch-mode power supply (SMPS) controller. It generates logic-supply voltages in battery-powered systems. The RT8206BGQW includes two pulse-width modulation (PWM) controllers fixed at 5V/3.3V or adjustable from 2V to 5.5V. An optional external charge pump can be monitored through SECFB (RT8206A). This device also features a linear regulator providing a fixed 5V output. The linear regulator provides up to 70mA output current with automatic linear-regulator bootstrapping to the BYP input. The RT8206BGQW includes on-board power-up sequencing, the power-good outputs, internal soft-start, and internal soft-discharge output that prevents negative voltages on shutdown. The applications of the RT8206BGQW include Notebook and Sub-Notebook Computers and 3-Cell and 4-Cell Li+ Battery-Powered Devices.

Parametrics

RT8206BGQW absolute maximum ratings: (1)VIN, ENLDO to GND: -0.3V to 30V; (2)BOOTx to GND: -0.3V to 36V; (3)PHASEx to GND DC: -0.3V to 30V; (4)＜20ns: -8V to 38V; (5)BOOTx to PHASEx: -0.3V to 6V; (6)VCC, ENx, SKIP, TON, PVCC, PGOODx, to GND: -0.3V to 6V; (7)LDO, FBx, VOUTx, SECFB, REF, ILIMx to GND: -0.3V to (VCC + 0.3V); (8)UGATEx to PHASEx DC: -0.3V to (PVCC + 0.3V); (9)＜20ns: -5V to 7.5V; (10)LGATEx, BYP to GND DC: -0.3V to (PVCC + 0.3V); (11)＜20ns: -2.5V to 7.5V; (12)PGND to GND: -0.3V to 0.3V; (13)Power Dissipation, PD @ TA = 25℃ WQFN-32L 5x5: 2.778W; (14)Package Thermal Resistance (Note 2); (15)WQFN-32L 5x5, θJA: 36℃/W; (16)WQFN-32L 5x5, θJC: 7℃/W; (17)Junction Temperature: 150℃; (18)Lead Temperature (Soldering, 10 sec.): 260℃; (19)Storage Temperature Range: -65℃ to 150℃; (20)ESD Susceptibility (Note 3) HBM (Human Body Mode): 2kV; (21)MM (Machine Mode): 200V.

Features

RT8206BGQW features: (1)Wide Input Voltage Range 6V to 25V; (2)Dual Fixed 5V/3.3V Outputs or Adjustable from 2V to 5.5V, 1.5% Accuracy; (3)Secondary Feedback Input Maintains Charge Pump Voltage (RT8206A); (4)Independent Enable and Power Good; (5)5V Fixed LDO Output : 70mA; (6)2V Reference Voltage ±1% : 50uA; (7)Constant ON-Time Control with 100ns Load Step Response; (8)Frequency Selectable via TON Setting; (9)RDS(ON) Current Sensing and Programmable Current Limit; (10)Selectable PWM, DEM or Ultrasonic Mode; (11)Internal Soft-Start with 5 Steps Current Limiting and Soft-Discharge; (12)High Efficiency Up to 97%; (13)5mW Quiescent Power Dissipation; (14)Thermal Shutdown; (15)RoHS Compliant and Halogen Free.

Diagrams