RT8295A
4
DS8295A-04 October 2016www.richtek.com
©
Copyright 2016 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
Electrical Characteristics
(V
IN
= 12V, T
A
= 25°C, unless otherwise specified)
Absolute Maximum Ratings (Note 1)
Supply Voltage, V
IN
------------------------------------------------------------------------------------------------ −0.3V to 25V
Input Voltage, SW -------------------------------------------------------------------------------------------------- −0.3V to (V
IN
+ 0.3V)
V
BOOT
− V
SW
--------------------------------------------------------------------------------------------------------- −0.3V to 6V
All Other Pin Voltages -------------------------------------------------------------------------------------------- −0.3V to 6V
Power Dissipation, P
D
@ T
A
= 25°C
SOP-8 (Exposed Pad) -------------------------------------------------------------------------------------------- 1.333W
Package Thermal Resistance (Note 2)
SOP-8 (Exposed Pad), θ
JA
--------------------------------------------------------------------------------------- 75°C/W
SOP-8 (Εxposed Pad), θ
JC
-------------------------------------------------------------------------------------- 15°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 (Human Body Mode) --------------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ----------------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions (Note 4)
Supply Voltage, V
IN
------------------------------------------------------------------------------------------------ 4.5V to 23V
Junction Temperature Range ------------------------------------------------------------------------------------- −40°C to 125°C
Ambient Temperature Range------------------------------------------------------------------------------------- −40°C to 85°C
Parameter Symbol Test Conditions Min Typ Max Unit
Shutdown Supply Current V
EN
= 0V -- 0.5 3 A
Supply Current V
EN
= 3 V, V
FB
= 0.9V -- 0.8 1.2 mA
Feedback Voltage V
FB
4.5V V
IN
23V 0.788 0.8 0.812 V
Error Amplifier
Transconductance
G
EA
IC = ± 10A -- 940 -- A/V
High Side Switch On
Resistance
R
DS(ON)1
-- 130 -- m
Low Side Switch
On-Resistance
R
DS(ON)2
-- 130 -- m
High Side Switch Leakage
Current
V
EN
= 0V, V
SW
= 0V -- 0 10 A
Upper Switch Current Limit Min. Duty Cycle, V
BOOT
V
SW
= 4.8V -- 4.3 -- A
COMP to Current Sense
Transconductance
G
CS
-- 4 -- A/V
Oscillation Frequency f
OSC1
300 340 380 kHz
Short Circuit Oscillation
Frequency
f
OSC2
V
FB
= 0V -- 100 -- kHz
Maximum Duty Cycle D
MAX
V
FB
= 0.7V -- 93 -- %
Minimum On Time t
ON
-- 100 -- ns
