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RT8269 Ver la hoja de datos (PDF) - Richtek Technology

Número de pieza
componentes Descripción
Fabricante
RT8269
Richtek
Richtek Technology Richtek
RT8269 Datasheet PDF : 12 Pages
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Function Block Diagram
VIN
VCC
1µA
Internal
Regulator
Oscillator
400kHz/120kHz
Current Sense
Slope Comp Amplifier
+
-
10k
EN
VA VCC
-
Foldback
Control
1.1V
+
Shutdown
Comparator
3V
VCC
0.5V +
-
UV
Comparator
+
Logic
-
Current
10µA
Comparator
0.92V +
SS
+EA
-
Gm = 680µA/V
RT8269
VA
BOOT
SW
GND
FB
COMP
Absolute Maximum Ratings (Note 1)
z Supply Voltage, VIN ----------------------------------------------------------------------------------------- 0.3V to 26V
z Switching Voltage, SW ------------------------------------------------------------------------------------- 0.3V to (VIN + 0.3V)
z BOOT Voltage ------------------------------------------------------------------------------------------------ (VSW 0.3V) to (VSW + 6V)
z The Other Pins ----------------------------------------------------------------------------------------------- 0.3V to 6V
z Power Dissipation, PD @ TA = 25°C
SOP-8 (Exposed Pad) -------------------------------------------------------------------------------------- 1.333W
z Package Thermal Resistance (Note 2)
SOP-8 (Exposed Pad), θJA -------------------------------------------------------------------------------- 75°C/W
z Junction Temperature --------------------------------------------------------------------------------------- 150°C
z Lead Temperature (Soldering, 10 sec.) ----------------------------------------------------------------- 260°C
z Storage Temperature Range ------------------------------------------------------------------------------- 65°C to 150°C
z ESD Susceptibility (Note 3)
HBM (Human Body Mode) --------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ---------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions (Note 4)
z Supply Voltage, VIN ----------------------------------------------------------------------------------------- 4.75V to 24V
z Enable Voltage, VEN ----------------------------------------------------------------------------------------- 0V to 5.5V
z Junction Temperature Range ------------------------------------------------------------------------------ 40°C to 125°C
z Ambient Temperature Range ------------------------------------------------------------------------------ 40°C to 85°C
DS8269-02 March 2011
www.richtek.com
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