RT8058A
3
DS8058A-02 April 2011 www.richtek.com
Absolute Maximum Ratings (Note 1)
z Supply Input Voltage VDD, PVDD ------------------------------------------------------------------------------------- −0.3V to 6V
z LX Pin Switch Voltage ---------------------------------------------------------------------------------------------------- −0.3V to 6V
z Other I/O Pin Voltage ----------------------------------------------------------------------------------------------------- −0.3V to 6V
z Power Dissipation, P
D
@ T
A
= 25°C
WDFN-10L 3x3 ------------------------------------------------------------------------------------------------------------- 1.429W
z Package Thermal Resistance (Note 2)
WDFN-10L 3x3, θ
JA
------------------------------------------------------------------------------------------------------- 70°C/W
WDFN-10L 3x3, θ
JC
------------------------------------------------------------------------------------------------------- 7.8°C/W
z Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------- 260°C
z Storage Temperature Range -------------------------------------------------------------------------------------------- −65°C to 150°C
z Junction Temperature ----------------------------------------------------------------------------------------------------- 150°C
z ESD Susceptibility (Note 3)
HBM (Human Body Mode) ---------------------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ------------------------------------------------------------------------------------------------------ 200V
Electrical Characteristics
(V
DD
= V
PVDD
= 3.6V, T
A
= 25°C, unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Input Voltage Range
V
IN
2.6 -- 5.5 V
Feedback Reference Voltage
V
REF
0.582 0.6 0.618 V
Active, No Load -- 3.4 -- mA
Active, Not Switching, V
FB
= 0.5V
-- 340 --
μA
DC Bias Current
(PVDD, VDD total)
Shutdown, EN = 0 -- -- 2 μA
V
DD
Rising
2.3 2.43 2.55 V
Under voltage Lockout
Threshold
UVLO
V
DD
Hysteresis
-- 150 -- mV
Oscillator Frequency
f
OSC
Switching Frequency
1 1.2 1.4 MHz
EN High-Level Input Voltage
V
EN_H
1.4 -- -- V
EN Low-Level Input Voltage
V
EN_L
-- -- 0.4 V
Switch On Resistance, High
R
DS(ON)_P
I
OUT
= 200mA
-- 142 210 mΩ
Switch On Resistance, Low R
DS(ON)_N
I
OUT
= 200mA
--
96 160 mΩ
Peak Current Limit I
LIM
2.2 3 -- A
Output Voltage Line Regulation
V
IN
= 2.6V to 5.5V, I
OUT
= 0
--
0.05 -- %/V
Output Voltage Load
I
OUT
= 0AÆ2A
-- 1 -- %/A
Recommended Operating Conditions (Note 4)
z Supply Input Voltage ------------------------------------------------------------------------------------------------------ 2.6V to 5.5V
z Junction Temperature Range --------------------------------------------------------------------------------------------
−40°C to 125°C
z Ambient Temperature Range --------------------------------------------------------------------------------------------
−40°C to 85°C
