RT8251GSP Ver la hoja de datos (PDF) - Richtek Technology
Número de pieza
componentes Descripción
Fabricante
RT8251GSP Datasheet PDF : 16 Pages
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RT8251
Function Block Diagram
VIN
VCC
1µA
Internal
Regulator
Oscillator
570kHz
10k
EN
VA VCC
-
Foldback
Control
1.1V +
3V
Shutdown
Comparator
VCC
0.4V +
-
UV
Comparator
10µA
0.8V +
SS
+EA
-
Gm = 820µA/V
Current Sense
Slope Comp Amplifier
+
VA
-
+
Logic
-
Current
Comparator
BOOT
SW
GND
FB
COMP
Absolute Maximum Ratings (Note 1)
z Supply Voltage, VIN ------------------------------------------------------------------------------------------ −0.3V to 26V
z Switching Voltage, VSW ------------------------------------------------------------------------------------- −0.3V to (VIN + 0.3V)
z BOOT Voltage, VBOOT --------------------------------------------------------------------------------------- (VSW − 0.3V) to (VSW + 6V)
z All Other Pins ------------------------------------------------------------------------------------------------- −0.3V to 6V
z Power Dissipation, PD @ TA = 25°C
WQFN-16L 3x3 ----------------------------------------------------------------------------------------------- 1.471W
SOP-8 (Exposed Pad) -------------------------------------------------------------------------------------- 1.333W
z Package Thermal Resistance (Note 2)
WQFN-16L 3x3, θJA ------------------------------------------------------------------------------------------ 68°C/W
WQFN-16L 3x3, θJC ----------------------------------------------------------------------------------------- 7.5°C/W
SOP-8 (Exposed pad), θJA --------------------------------------------------------------------------------- 75°C/W
SOP-8 (Exposed Pad), θJC -------------------------------------------------------------------------------- 15°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 Model) --------------------------------------------------------------------------------- 2kV
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
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DS8251-04 February 2013
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