RT9045 Ver la hoja de datos (PDF) - Richtek Technology
Número de pieza
componentes Descripción
Fabricante
RT9045 Datasheet PDF : 12 Pages
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RT9045
Typical Application Circuit
VCNTL = 5V
VIN = 1.8V/1.5V/1.35V/1.2V
R1
2N7002
EN
R2
R3
2.2
VIN
VCNTL
RT9045
REFEN
VOUT
CSS
GND
CIN CCNTL
RTT
COUT RDUMMY
R1 = R2 = 100kΩ, RTT = 50Ω / 33Ω / 25Ω
RDUMMY = 1kΩ as for VOUT discharge when VIN is not presented but VCNTL is presented
COUT = 10μF (Ceramic) under the worst case testing condition
CIN = 10μF, CCNTL = 1μF, CSS = 1nF to 0.1μF
Test Circuit
VIN = 1.8V/1.5V/1.35V/1.2V VCNTL = 5V
0.9V/0.75V/0.675V/0.6V
VIN
VCNTL
RT9045
REFEN
VOUT
GND
VOUT
IL
COUT V
Figure 1. Output Voltage Tolerance, ΔVLOAD
VIN = 1.8V/1.5V/1.35V/1.2V
0.9V/0.75V/0.675V/0.6V
0.15V
VCNTL = 5V
A
VIN
VCNTL
RT9045
REFEN
VOUT
GND
VOUT
0.9V
0V
RL
COUT V
Figure 2. Current in Shutdown Mode, ISTBY
RL and COUT
Time delay
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DS9045-04 August 2011
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