RT9728B
4
DS9728B-00 August 2013www.richtek.com
©
Copyright 2013 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
Electrical Characteristics
(V
IN
= 3.6V, 15kΩ ≤ R
ILIM
≤ 232kΩ, T
A
= 25°C, unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Logic-High V
IH
1.1 -- --
EN Input Voltage
Logic-Low V
IL
-- -- 0.66
V
Current Limit Threshold
Resistor Range
R
ILIM
(nominal 1%) from I
LIM
to GND 15 -- 232 kΩ
V
IN
Rising -- 2.3 --
Under-Voltage Lockout
Threshold
V
UVLO
V
IN
Falling -- 2.1 --
V
Shutdown Current I
SHDN
V
IN
= 3.6V, No Load on V
OUT
, V
EN
= 0V -- 1 3 μA
R
ILIM
= 20kΩ -- 120 170
Quiescent Current I
Q
V
IN
= 5.5V,
No Load on V
OUT
R
ILIM
= 210kΩ -- 120 170
μA
Reverse Leakage Current I
REV
V
OUT
= 5V, V
IN
= 0V -- 1 10 μA
Thermal Shutdown Threshold T
SD
-- 160 -- °C
Static Drain-Source On-State
Resistance
R
DS(ON)
I
SW
= 0.2A -- 120 -- mΩ
R
ILIM
= 20kΩ 1166 1295 1425
R
ILIM
= 49.9kΩ 468 520 572
R
ILIM
= 210kΩ 104 130 156
Current Limit I
LIM
ILIM Shorted to VIN -- 75 --
mA
Absolute Maximum Ratings (Note 1)
z Supply Input Voltage, VIN ----------------------------------------------------------------------------------------------- −0.3V to 6V
z Other Pins------------------------------------------------------------------------------------------------------------------- −0.3V to 6V
z Power Dissipation, P
D
@ T
A
= 25°C
SOT-23-6 -------------------------------------------------------------------------------------------------------------------- 0.4W
WDFN-6L 2x2 -------------------------------------------------------------------------------------------------------------- 0.606W
z Package Thermal Resistance (Note 2)
SOT-23-6, θ
JA
--------------------------------------------------------------------------------------------------------------- 250°C/W
WDFN-6L 2x2, θ
JA
--------------------------------------------------------------------------------------------------------- 165°C/W
WDFN-6L 2x2, θ
JC
-------------------------------------------------------------------------------------------------------- 7°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 Model) ---------------------------------------------------------------------------------------------- 2kV
Recommended Operating Conditions (Note 4)
z Supply Input Voltage, VIN ----------------------------------------------------------------------------------------------- 2.5V to 5.5V
z Junction Temperature Range -------------------------------------------------------------------------------------------- −40°C to 125°C
z Ambient Temperature Range -------------------------------------------------------------------------------------------- −40°C to 85°C
