RT8075 Datasheet, PDF (3/11 Pages) Richtek Technology Corporation – Dual 1A, 1.25MHz Synchronous Step-Down Converter

RT8075
Absolute Maximum Ratings (Note 1)
z Supply Input Voltage VIN1, VIN2 --------------------------------------------------------------------------------- −0.3V to 6.5V
z LX1, LX2 Pin Voltage ------------------------------------------------------------------------------------------------ −0.3V to (V_IN + 0.3V)
z Other Pins Voltage --------------------------------------------------------------------------------------------------- −0.3V to 6.5V
z Power Dissipation, P_D @ T_A = 25°C
WDFN-10L 3x3 -------------------------------------------------------------------------------------------------------- 1.471W
z Package Thermal Resistance (Note 2)
WDFN-10L 3x3, θ_JA -------------------------------------------------------------------------------------------------- 68°C/W
WDFN-10L 3x3, θ_JC -------------------------------------------------------------------------------------------------- 7.8°C/W
z Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------------- 260°C
z Junction Temperature ------------------------------------------------------------------------------------------------ 150°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 ------------------------------------------------------------------------------------------------- 2.5V 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, TA = 25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Input Voltage Range
V_IN
2.5
--
5.5
V
Reference Voltage
Quiescent Current
V_REF
I_Q
0.588 0.6 0.612 V
I_OUT = 0mA, V_FB = V_REF + 5%
--
70
--
μA
Shutdown Current
Under Voltage
Lockout Threshold
I_SHDN
UVLO
V_IN Rising
Hysteresis
--
0.1
1
μA
--
2.1
--
V
--
0.18
--
Oscillator Frequency
EN1 High-Level Input Voltage
EN1 Low-Level Input Voltage
Thermal Shutdown Temperature
f _{OS C}
V _{EN _H}
V _{EN _L}
T_SD
V_IN = 3.6V, I_OUT = 300mA
V_IN = 2.5V to 5.5V
V_IN = 2.5V to 5.5V
1
1.25 1.5 MHz
1.5
--
V_{I N}
V
--
--
0.4
--
160
--
°C
Peak Current Limit
Switch On Resistance, High
Switch On Resistance, Low
Output Line Regulation
I_{L IM}
V_IN = 2.5V to 5.5 V
R_{DS(ON)_P} I_OUT = 200mA, V_IN = 3.6V
R_{DS(ON)_N} I_OUT = 200mA, V_IN = 3.6V
V_IN = 2.5V to 5.5V (Note 5)
1.2 1.5 2.1
A
--
0.25
--
Ω
--
0.26
--
Ω
--
0.04 0.4 %/V
Output Load Regulation
50mA < I_LOAD < 1A (Note 5)
--
0.5
--
%
DS8075-04 April 2011
www.richtek.com
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