RT8057A
Absolute Maximum Ratings
Power Dissipation, P
D
@ T
A
= 25°C
WDFN-6SL 2x2 ------------------------------------------------------------------------------------------------------------ 0.833W
TSOT-23-5 ------------------------------------------------------------------------------------------------------------------- 0.625W
Package Thermal Resistance (Note 2)
WDFN-6SL 2x2,
θ
JA
------------------------------------------------------------------------------------------------------- 120°C/W
WDFN-6SL 2x2,
θ
JC
------------------------------------------------------------------------------------------------------ 8.2°C/W
TSOT-23-5,
θ
JA
------------------------------------------------------------------------------------------------------------- 160°C/W
Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------- 260°C
Junction Temperature ----------------------------------------------------------------------------------------------------- 150°C
Storage Temperature Range --------------------------------------------------------------------------------------------
−
65°C to 150°C
ESD Susceptibility (Note 3)
HBM -------------------------------------------------------------------------------------------------------------------------- 2kV
MM ---------------------------------------------------------------------------------------------------------------------------- 200V
(Note 1)
Supply Input Voltage, V
IN
------------------------------------------------------------------------------------------------ 6.5V
Recommended Operating Conditions
(Note 4)
Supply Input Voltage, V
IN
------------------------------------------------------------------------------------------------ 2.7V to 5.5V
Junction Temperature Range --------------------------------------------------------------------------------------------
−
40°C to 125°C
Ambient Temperature Range --------------------------------------------------------------------------------------------
−
40°C to 85°C
Electrical Characteristics
(V
IN
= 3.6V, T
A
= 25°C unless otherwise specified)
Parameter
Output Current
Quiescent Current
Reference Voltage
Symbol
I
OUT
Test Conditions
V
IN
= 2.7V to 5.5V
I
OUT
= 0mA
Min
--
--
−2
−2.5
2
--
--
--
Typ
--
81
--
--
2.2
0.2
0.1
2.25
--
--
150
250
200
1.5
--
--
300
Max
1
--
2
2.5
2.4
--
1
--
V
IN
0.4
--
--
--
2
1
1
400
Unit
A
μA
%
V
V
μA
MHz
V
V
°C
mΩ
mΩ
A
%/V
%
μs
I
Q
V
REF
Note 5
V
IN
Rising
Hysteresis
Under Voltage Lockout Threshold V
UVLO
Shutdown Current
Switching Frequency
EN Threshold Logic-High
Voltage
Logic-Low
Thermal Shutdown Temperature
Switch On
Resistance
High Side
Low Side
V
IH
V
IL
T
SD
I
SHDN
1
--
--
--
--
1.1
V
IN
= 2.7V to 5.5V
0mA < I
OUT
< 0.6A
--
--
200
R
DS(ON)_H
I
SW
= 0.2A
R
DS(ON)_L
I
SW
= 0.2A
Peak Current Limit
Output Voltage Line Regulation
Output Voltage Load Regulation
Start-Up Time
I
LIM
t
ss
Guaranteed by Design
DS8057A-00 March 2011
www.richtek.com
3
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
