%PDF-1.4
%
1 0 obj
<>
endobj
2 0 obj
<>stream
Notebook and Sub-Notebook Computers
Notebook and Sub-Notebook Computers
3-Cell and 4-Cell Li+ Battery-Powered Devices
Wide Input Voltage Range 6V to 25V
Wide Input Voltage Range 6V to 25V
Dual Fixed 5V/3.3V Outputs or Adjustable from 2V to 5.5V
1.5% Accuracy
Secondary Feedback Input Maintains Charge Pump Voltage (RT8206L)
Independent Enable and Power Good
5V Fixed LDO Output : 70mA
2V Reference Voltage ±1% : 50mA
Constant ON-Time Control with 100ns Load Step Response
Frequency Selectable via TON Setting
RDS(ON) Current Sensing and Programmable Current Limit
4700ppm/°C RDS(ON) Current Sensing
Selectable PWM
DEM or Ultrasonic Mode
Internal Soft-Start with Current Limiting and Soft-Discharge
High Efficiency Up to 97%
5mW Quiescent Power Dissipation
Thermal Shutdown
RoHS Compliant and Halogen Free
High Efficiency, Main Power Supply Controller for Notebook Computers
The RT8206L/M dual step-down, Switch-Mode Power-Supply (SMPS) controller ,generates logic-supply voltages in battery-powered systems. The RT8206L/M ,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 (RT8206L). 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 RT8206L/M ,includes on-board power-up sequencing, the power good outputs, internal ,soft-start, and internal soft-discharge output that prevents negative voltages ,on shutdown.,A constant on-time PWM control scheme operates without sense resistors and ,provides 100ns response to load transients while maintaining a relatively ,constant switching frequency. The unique ultrasonic mode maintains the ,switching frequency above 25kHz, which eliminates noise in audio applications. ,Other features include Diode-Emulation Mode (DEM), which maximizes efficiency ,in light-load applications, and fixed frequency PWM mode, which reduces RF ,interference in sensitive application.,The RT8206L/M is available in a WQFN-32L 5x5 package.
endstream
endobj
3 0 obj
<>
endobj
6 0 obj
<>/ColorSpace<>/Font<>/ProcSet[/PDF/Text/ImageC]/ExtGState<>>>
endobj
5 0 obj
<>stream
Hr)p9p.Ń$JXP(J-6)G#- 3ݽ$*rw|FBImhO8<])B(0jUh%^˟xzrrŇ7bN>輸]yod?Vvk+D>
ziz]=9|