RT8292AHZSP Datasheet, PDF (5/11 Pages) Richtek Technology Corporation – Evaluation Board

RT8292AHZSP
Evaluation Board
Power-up & Measurement Procedure
1. Apply a 12V nominal input power supply (4.5V < V_IN < 23V) to the VIN and GND terminals.
2. The EN voltage is pulled to logic high by R4 (100kΩ to VIN) to enable operation. Drive EN high (>2.7V) to
enable operation or low (<0.4V) to disable operation.
3. Verify the output voltage (approximately 3.3V) between VOUT and GND.
4. Connect an external load up to 2A to the VOUT and GND terminals and verify the output voltage and current.
Output Voltage Setting
Set the output voltage with the resistive divider (R1, R2) between VOUT and GND with the midpoint connected to
FB. The output is set by the following formula:
VOUT = 0.8 x (1 + ^R1 )
R2
The installed VOUT capacitors (C4, C5) are 22μF, 16V X5R ceramic types. Do not exceed their operating voltage
range and consider their voltage coefficient (capacitance vs. bias voltage) and ensure that the capacitance is
sufficient to maintain stability and provide sufficient transient response for your application. This can be verified by
checking the output transient response as described in the RT8292 IC datasheet.
UG8292AHZSP-00 July 2014
www.richtek.com
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