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