RT6214A/B
Typical Application Circuit
For TSOT-23-6 (FC)
RT6214A/B
3
5
6
2
VIN
V
BOOT
IN
C
0.1μF
BOOT
C
22μF
IN
V
OUT
LX
L
C
44μF
OUT
C
FF
Enable
EN
R1
R2
Open
4
FB
GND
R *
T
1
10k
For TSOT-23-8 (FC)
RT6214A/B
3
7
8
2
V
IN
VIN
BOOT
C
0.1μF
BOOT
C
22μF
IN
V
LX
OUT
L
C
44μF
OUT
Enable
EN
C
FF
R1
R2
R
PGOOD
Open
4
5
V
PGOOD
PGOOD
SS
6
FB
R *
T
C
SS
10k
GND
1
* Note : When CFF is added, it is necessary to add RT = 10k between feedback network and chip FB pin.
Part Options for fSW Mode and Package
Product No.
PSM/PWM
PSM
VREF (V)
0.8
fSW (Hz)
500k
Package
RT6214AHGJ6F
RT6214BHGJ6F
RT6214AHRGJ6F
RT6214BHRGJ6F
RT6214AHRGJ8F
RT6214BHRGJ8F
TSOT-23-6
TSOT-23-6
TSOT-23-6
TSOT-23-6
TSOT-23-8
TSOT-23-8
PWM
PSM
0.8
500k
0.765
0.765
0.765
0.765
500k
PWM
PSM
500k
650k
PWM
650k
Table 1. Suggested Component Values (VIN = 12V, RT6214A/BHGJ6F)
VOUT (V)
1.05
1.2
R1 (k)
10
R2 (k)
32.4
41.2
32.4
19.1
13
L (H)
2.2
COUT (F)
CFF (pF)
--
44
44
44
44
44
44
20.5
40.2
40.2
40.2
40.2
2.2
--
1.8
3.6
--
2.5
3.6
22 to 68
22 to 68
22 to 68
3.3
4.7
5
7.68
4.7
Copyright © 2018 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS6214A/B-09 August 2018
www.richtek.com
11
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
