RT5090E
Parameter
BUCK3
Supply Voltage
Supply Voltage
Supply Current
Shutdown Supply Current
Quiescent Supply Current
Reference and Soft-Start
Output Voltage Scaling
Output Voltage
DC Output Voltage
Programmable step
Soft-Star Time
Driver On-Resistor
LGATE3 Driver Source
LGATE3 Driver Sink
R
LGATE3_sr
R
LGATE3_sk
t
D3_LU
Dead Time
t
D3_UL
R
DS(ON)
Switch On Resistance
Switch On Resistance
Current Limit
Current Limit
(External Low Side MOSFET)
DVS Step
Switching Frequency
Switching Frequency
Protections
OVP Trip Threshold
OVP Timer Latch
UVP Trip Threshold
UVP Timer Latch
Regulation
Line Regulation
Load Regulation
Discharge Resistor
Discharge Resistance
R
DISCHG
--
10
--
CCM
--
--
0.5
0.5
--
--
%
%
V
OVP_TH
t
OVPDLY
V
UVP_TH
t
UVPDLY
--
--
--
--
120
10
60
10
--
--
--
--
%
s
%
s
f
SW_6A
6A application
--
1
--
MHz
I
OC_EXT
I
MAX
= 6A, peak current sense
--
--
9
10
--
--
A
mV/us
R
DS(ON)_H
R
DS(ON)_L
V
IN3
= 5V
V
IN3
= 5V
--
--
50
45
--
--
m
m
LGATE3, high state
LGATE3, low state
From LGATE3 falling to
UGATE3 rising
From UGATE3 falling to
LGATE3 rising
--
--
--
--
3
1.5
30
20
6
3
--
--
ns
ns
V
OUT3
V
OUT3
V
STEP
t
SS
V
OUT3
Soft-start time
Controlled by I
2
C
0x05[6:0]
0x05[6:0] = 1Eh, CCM
0.7
0.99
--
--
--
1
10
1
1.5
1.01
--
--
V
V
mV
ms
V
EN
= 0V
Enable, no switching
--
--
--
200
3
--
A
A
V
IN3
4.5
5
6
V
Symbol
Test Conditions
Min
Typ
Max
Unit
Copyright
©
2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS5090E-00 August 2018
www.richtek.com
9
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
