RT2825
Parameter
EN Pull High Current
EN Hysteresis Current
Oscillator
R
OSC
= 36k
Switching Frequency
Switching Frequency Range
(RT/SYNC Mode)
Minimum Pulse Width
SYNC Threshold Voltage
SYNC Falling Edge to LX
Rising Edge Delay
Buck1, Buck2 Converters
Reference Voltage
Line Regulation
Load Regulation
Error Amplifier G
M
COMP to I
switch
G
N
SS Charge Current
Upper Switch Current Limit
Lower Sinking Current Limit
High-Side Switch
On-Resistance
Low-Side Switch
On-Resistance
Minimum On-Time
BOOT-PH UVLO
Hiccup Wait Time
Hiccup Time before Re-start
Power Good
Power Good Rising Threshold
V
FB
rising (Good)
V
FB
rising (Fault)
V
FB
falling (Fault)
V
FB
falling (Good)
T
SD
T
SD
--
--
--
--
94
109
91
106
--
--
--
--
%
R
LIM
= 60.4k
V
REF
0A
I
LOAD
6A
I
OUT
= 2A
I
OUT
= (10% - 90%) x I
OUT(MAX)
2A
< I
COMP
< 2A, V
COMP
= 1V
0.594
--
--
--
--
--
--
--
R
DS(ON)_U
R
DS(ON)_L
t
ON_MIN
--
--
--
--
--
--
0.6
0.5
0.5
1300
16
6
8.4
2.6
31
23
70
2.1
512
16384
0.606
--
--
--
--
--
--
--
48
36
100
3
--
--
V
%/V
%/A
MHOS
A/V
A
A
A
m
m
ns
V
cycles
cycles
High-Level
Low-Level
Measure at 500kHz with ROSC
resistor in series
f
OSC
R
OSC
= 90.9k
R
OSC
= 210k
Include Sync Mode and RT Mode
Set Point
800
352
160
200
--
--
0.8
--
1000
440
200
--
20
--
--
66
1200
528
240
1000
--
2
--
--
kHz
ns
V
ns
kHz
Symbol
Test Conditions
V
EN
= 1.1V
V
EN
= 1.3V
Min
--
--
Typ
3
3
Max
--
--
Unit
A
A
Power Good Falling Threshold
Over-Temperature Protection
Thermal Shutdown
Thermal Shutdown Hysteresis
%
--
--
160
20
--
--
°C
°C
Copyright
©
2017 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
6
DS2825-00 May 2017
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
