RT9742
5
DS9742-07 June 2017 www.richtek.com
©
Copyright 2017 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
Absolute Maximum Ratings (Note 1)
Supply Input Voltage, VIN ----------------------------------------------------------------------------------------------- 7V
EN Voltage ------------------------------------------------------------------------------------------------------------------ −0.3V to 7V
FLAG Voltage -------------------------------------------------------------------------------------------------------------- 7V
Power Dissipation, P
D
@ T
A
= 25°C
TSOT-23-5 ------------------------------------------------------------------------------------------------------------------- 0.49W
TSOT-23-5 (FC) ------------------------------------------------------------------------------------------------------------ 0.79W
SOT-23-3 -------------------------------------------------------------------------------------------------------------------- 0.41W
Package Thermal Resistance (Note 2)
TSOT-23-5, θ
JA
------------------------------------------------------------------------------------------------------------- 203°C/W
TSOT-23-5 (FC), θ
JA
------------------------------------------------------------------------------------------------------ 126.5°C/W
SOT-23-3, θ
JA
--------------------------------------------------------------------------------------------------------------- 243.3°C/W
Junction Temperature ----------------------------------------------------------------------------------------------------- 150°C
Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------- 260°C
Storage Temperature Range -------------------------------------------------------------------------------------------- −65°C to 150°C
ESD Susceptibility (Note 3)
HBM (Human Body Model) ---------------------------------------------------------------------------------------------- 2kV
Recommended Operating Conditions (Note 4)
Supply Input Voltage, VIN ----------------------------------------------------------------------------------------------- 2.7V to 6V
EN Voltage ------------------------------------------------------------------------------------------------------------------ 0V to 6V
Junction Temperature Range --------------------------------------------------------------------------------------------
−40°C to 125°C
Ambient Temperature Range -------------------------------------------------------------------------------------------- −40°C to 85°C
Electrical Characteristics
(V
IN
= 5V, C
IN
= 10μF, C
OUT
= 0.1μF, T
A
= 25°C, unless otherwise specified)
Parameter Symbol Test Conditions Min Typ Max Unit
Input Quiescent Current I
Q
Switch on, V
OUT
= open -- 30 40
A
Input Shutdown Current I
SHDN
V
IN
= 5V, no load on OUT, device
OFF, V
EN
= 0V or
EN
V = 5V
-- 0.1 1
Switch On
Resistance
RT9742XXJ5F
R
DS(ON)
-- 55 --
m
RT9742XXJ5/V -- 70 --
Over Current
Trip Threshold
(Note 5)
RT9742Q/R/S
I
TRIP
V
IN
= 5V, 100A/s
0.65 0.89 1
A
RT9742G/H/L 1.05 1.4 1.5
RT9742E/F/K/M/U 1.55 2.1 2.25
RT9742C/D/J 2.05 2.8 3
RT9742N/P 2.55 3.5 3.75
RT9742A/B 3.05 4.2 4.5