RT6226A/B/C
Parameter
Ultra-Sonic Mode
Symbol
VEN
Test Conditions
Min
2.3
--
Typ
--
Max
--
Unit
V
Normal Mode
VEN
--
1.7
V
Output Voltage
RT6226B
3.267
5.049
--
3.3
5.1
5
3.333
5.151
--
Output Voltage Setpoint
VOUT
VCC
V
V
RT6226C
VCC Regulator Voltage
Feedback Voltage
Feedback Reference Voltage
Feedback Current
VREF
IFB
(RT6226A)
0.594
0.6
--
0.606
50
V
VFB = 4V (RT6226A)
50
nA
On-Resistance
High-Side Switch On-Resistance RDS(ON)_H
Low-Side Switch On-Resistance RDS(ON)_L
25
12
40
30
15
50
40
18
63
m
m
Discharge FET Ron
Current Limit
RDIS
Top FET Current Limit
Bottom FET Current Limit
ILIM_T
ILIM_B
--
7
4
6
11
8.4
5
--
A
A
RT6226C
9.3
5.5
9.2
11.5
ILMT = ”0”
Bottom FET Current Limit
ILIM
ILMT = Floating RT6226A/B
ILMT = ”1”
7.2
9.75
A
8
VCC
0.8
ILMT Rising Threshold
VILMTH
VILMTL
--
--
VCC
0.8
V
V
ILMT Falling Threshold
--
Oscillator Frequency
RT6226A/B
RT6226C
0.42
0.62
0.5
0.58
0.9
MHz
MHz
Oscillator Frequency
fOSC
0.75
On-Time Timer Control
Minimum On-Time
Minimum Off-Time
Minimum Off-Time
Ultrasonic Mode
Operation Period
Soft-Start
tON_MIN
tOFF_MIN
tOFF_MIN
VIN = VIN(MAX)
RT6226A
40
50
80
ns
ns
ns
300
150
400
200
600
300
RT6226B/C
tUSM
20
30
40
s
Soft-Start Time
tSS
tR
From EN high to PGOOD high
From 10% to 90% VOUT
1.3
--
1.65
0.6
2
ms
ms
Output Rising Time
UVLO
--
Wake up RT6226A/B
Wake up RT6226C
--
--
--
--
--
4.5
5.4
--
Input UVLO Threshold
UVLO Hysteresis
VUVLO
V
V
VUVLO
0.3
Copyright 2019 Richtek Technology Corporation. All rights reserved.
©
is a registered trademark of Richtek Technology Corporation.
DS6226A/B/C-03 September 2019
www.richtek.com
7
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
