RT2875A/B
Absolute Maximum Ratings
(Note 1)
Supply Voltage, VIN ------------------------------------------------------------------------------------------------
−0.3V
to 40V
Switch Voltage, SW ------------------------------------------------------------------------------------------------
−0.3V
to (V
IN
+ 0.3V)
BOOT to SW ---------------------------------------------------------------------------------------------------------
−0.3V
to 6V
Power Good Voltage, PGOOD ------------------------------------------------------------------------------------
−0.3V
to 40V
Other Pins -------------------------------------------------------------------------------------------------------------
−0.3V
to 6V
Power Dissipation, P
D
@ T
A
= 25°C
TSSOP-14 (Exposed Pad) ---------------------------------------------------------------------------------------- 4.464W
Package Thermal Resistance (Note 2)
TSSOP-14 (Exposed Pad),
θ
JA
---------------------------------------------------------------------------------- 28°C/W
TSSOP-14 (Exposed Pad),
θ
JC
---------------------------------------------------------------------------------- 4.3°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
(Note 4)
Recommended Operating Conditions
Supply Input Voltage, VIN ----------------------------------------------------------------------------------------- 4.5V to 36V
Junction Temperature Range --------------------------------------------------------------------------------------
−40°C
to 150°C
Ambient Temperature Range --------------------------------------------------------------------------------------
−40°C
to 105°C
Electrical Characteristics
(V
IN
= 12V, T
A
=
−40°C
to 105°C, unless otherwise specified)
Parameter
Shutdown Supply Current
Switching quiescent current with
no load at DCDC output
Feedback Voltage
High-Side
Symbol
Test Conditions
V
EN
= 0V
V
EN
= 2V, V
FB
= 0.64V,
R
LIM
= 91k, R
OSC
= 169k
Min
--
--
0.588
--
--
--
Typ
‐‐
--
0.6
950
95
70
1
--
2.1
4
5.5
2
5.2
--
Max
10
1.3
0.612
--
--
--
--
6
2.41
4.48
6.16
--
--
2100
Unit
A
mA
V
A/V
m
A
A
A
A
A
A
A/V
kHz
V
FB
R
DS(ON)1
R
DS(ON)2
4.5V
V
IN
36V
IC
= ±10A
Error Amplifier Trans-conductance G
EA
Switch On-
Resistance
Low-Side
High-Side Switch Leakage
Current
Current Limit Setting Rage
High-Side Switch Current Limit 1
High-Side Switch Current Limit 2
High-Side Switch Current Limit 3
Low-Side Switch Current Limit
COMP to Current Sense
Transconductance
Switching Frequency Range
G
CS
V
EN
= 0V, V
SW
= 0V
(Note 5)
H
OC1
H
OC2
H
OC3
R
LIM
= 100k
R
LIM
= 47k
R
LIM
= 33k
From drain to source
--
1.5
1.79
3.52
4.84
--
--
Include Sync mode and RT mode
set point
300
Copyright
©
2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS2875A/B-08 November 2018
www.richtek.com
5
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
