RT8016
Typical Application Circuit
V
IN
2.5V to 5.5V
3
C
IN
4.7µF
VIN
RT8016
2
EN
VOUT
GND
1, 5
6
C
OUT
10µF
LX
4
L
2.2µH
V
OUT
Figure 1. Fixed Voltage Regulator
L
2.2µH
C1
R1
6
I
R2
R2
C
OUT
10µF
V
IN
2.5V to 5.5V
3
C
IN
4.7µF
2
VIN
LX
4
V
OUT
RT8016
EN
FB
GND
1, 5
V
OUT
=
V
REF
x
⎛
1
+
R1
⎞
⎜
⎟
⎝
R2
⎠
with R2 = 300kΩ to 60kΩ so the I
R2
= 2μA to 10μA,
and (R1 x C1) should be in the range between 3x10
-6
and 6x10
-6
for component selection.
Figure 2. Adjustable Voltage Regulator
Layout Guide
RT8016_FIX
GND
EN
VIN
1
2
3
6 VOUT
5 GND
4 LX
C
OUT
C
IN
LX should be connected
C
IN
must be placed to Inductor by wide and
between V
DD
and short trace, keep
sensitive compontents
GND as close as
away from this trace
possible
Output capacitor
must be near
RT8016
RT8016_ADJ
GND
EN
VIN
1
2
3
6 FB
5 GND
L1
4 LX
C
OUT
C
IN
C
IN
must be placed
between V
DD
and
GND as close as
possible
LX should be
connected to
Inductor by wide
and short trace,
keep sensitive
compontents away
from this trace
R1
R2
Output
capacitor
must be near
RT8016
L1
Layout note:
1. The distance that C
IN
connects to V
IN
is as close as possible (Under 2mm).
2. C
OUT
should be placed near RT8016.
Figure 3. Layout Guide for RT8016
Copyright
©
2012 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
2
DS8016-04 February 2012
RICHTEK [ RICHTEK TECHNOLOGY CORPORATION ]
