RT8059 Ver la hoja de datos (PDF) - Richtek Technology
Número de pieza
componentes Descripción
Fabricante
RT8059 Datasheet PDF : 10 Pages
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RT8059
Absolute Maximum Ratings (Note 1)
z VIN to GND -------------------------------------------------------------------------------------------------------- 6.5V
z LX Pin Switch Voltage ------------------------------------------------------------------------------------------ −0.3V to (PVDD + 0.3V)
< 30ns -------------------------------------------------------------------------------------------------------------- −5V to 7.5V
z EN, FB to GND --------------------------------------------------------------------------------------------------- VIN + 0.6V
z Power Dissipation, PD @ TA = 25°C
TSOT-23-5 --------------------------------------------------------------------------------------------------------- 0.392W
z Package Thermal Resistance (Note 2)
TSOT-23-5, θJA --------------------------------------------------------------------------------------------------- 255°C/W
z Junction Temperature Range ---------------------------------------------------------------------------------- 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 Input Voltage, VIN -------------------------------------------------------------------------------------- 2.8V to 5.5V
z Junction Temperature Range ---------------------------------------------------------------------------------- −40°C to 125°C
z Ambient Temperature Range ---------------------------------------------------------------------------------- −40°C to 85°C
Electrical Characteristics
(VIN = 3.6V, VOUT = 2.5V, L = 2.2μH, CIN = 4.7μF, COUT = 10μF, TA = 25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Quiescent Current
Shutdown Current
Reference Voltage
Adjustable Output Range
Adjustable Output Voltage
Accuracy
FB Input Current
IQ
ISH DN
VREF
VOUT
ΔVOUT
IFB
IOUT = 0mA, VFB = VREF + 5%
EN = GND
(Note 5)
VIN = VOUT + ΔV to 5.5V,
0A < IOUT < 1A, (Note 6)
VFB = VIN
--
--
0.588
VR EF
−3
−50
78
--
μA
0.1
1
μA
0.6 0.612 V
-- VIN − 0.2 V
--
3
%
--
50 nA
P-MOSFET RON
N-MOSFET RON
RD S(O N)_ P
RD S(O N)_ N
IOUT = 200mA
IOUT = 200mA
-- 0.28 --
Ω
-- 0.25 --
P-Channel Current Limit
ILM _P
VIN = 2.8V to 5.5V
-- 1.5
--
A
EN Input Threshold Logic-High VIH
Voltage
Logic-Low VIL
VIN = 2.8V to 5.5V
VIN = 2.8V to 5.5V
1.5 --
--
V
--
--
0.4
Under Voltage Lockout Threshold VUVLO
Under Voltage Lockout Hysteresis ΔVUVLO
-- 2.3
--
V
-- 0.2
--
V
Oscillator Frequency
Thermal Shutdown Temperature
Max. Duty Cycle
fOSC
TSD
DMAX
IOUT = 100mA
1.2 1.5
-- 150
100 --
1.8 MHz
--
°C
--
%
Copyright ©2011 Richtek Technology Corporation. All rights reserved.
DS8059-04 December 2011
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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