RT2862A
Absolute Maximum Ratings
(Note 1)
Supply Voltage, VIN ------------------------------------------------------------------------------------------------
−0.3V
to 40V
Switch Voltage, SW ------------------------------------------------------------------------------------------------
−0.3V
to (V
IN
+ 0.3V)
BOOT Pin -------------------------------------------------------------------------------------------------------------
−0.3V
to 46.3V
EN Pin (with REN (150kΩ to 600kΩ) to VIN) -----------------------------------------------------------------
−0.3V
to 40V
SW Voltage (t < 10ns) ---------------------------------------------------------------------------------------------
−5V
to 46.3V
EN Pin ------------------------------------------------------------------------------------------------------------------
−0.3V
to 3.6V
Other Pins -------------------------------------------------------------------------------------------------------------
−0.3V
to 40V
Power Dissipation, P
D
@ T
A
= 25°C
SOP-8 (Exposed Pad) --------------------------------------------------------------------------------------------- 2.041W
Package Thermal Resistance (Note 2)
SOP-8 (Exposed Pad),
θ
JA
---------------------------------------------------------------------------------------- 49°C/W
SOP-8 (Exposed Pad),
θ
JC
--------------------------------------------------------------------------------------- 8°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 Model) ---------------------------------------------------------------------------------------- 2kV
Recommended Operating Conditions
(Note 4)
Supply Input Voltage, VIN
-----------------------------------------------------------------------------------------
4.5V to 36V
Junction Temperature Range --------------------------------------------------------------------------------------
−40°C
to 125°C
Ambient Temperature Range --------------------------------------------------------------------------------------
−40°C
to 85°C
Electrical Characteristics
(V
IN
= 12V, C
IN
= 20µF, T
A
=
−40°C
to 85°C, unless otherwise specified)
Parameter
Shutdown Supply Current
Quiescent Current
Feedback Reference Voltage
Switch
On-Resistance
High-Side
Low-Side
Symbol
Test Conditions
V
EN
= 0V
Min
--
--
0.784
--
--
4.25
Typ
--
1
0.8
105
80
5
1.7
300
500
1000
50
95
100
Max
10
1.3
0.816
190
145
5.75
--
336
560
1120
--
--
120
Unit
µA
mA
V
mΩ
A
A
I
Q
V
REF
R
DS(ON)1
R
DS(ON)2
U
OC
V
EN
= 3V, V
FB
= 0.9V
4.5V
≤
V
IN
≤
36V
High-Side Switch Current Limit
Range
Low-Side Switch Current Limit
From Drain to Source
R
T
= 191kΩ
--
264
440
880
--
--
--
Oscillation Frequency
f
OSC1
R
T
= 113kΩ
R
T
= 51kΩ
kHz
Short-Circuit Oscillation
Frequency
Maximum Duty Cycle
Minimum On-Time
f
OSC2
D
MAX
t
ON
V
FB
= 0V, R
T
= 113kΩ
V
FB
= 0.7V
kHz
%
ns
Copyright
©
2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
4
DS2862A-02 January 2018
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
