Diodes ZXRD060 - Manual (Page 8)

NEW PROD
UC
T
ZXRD060
Document number
Applicatio
Design gu
1. Determi
2. Determi
3. Determi
4. Determi
5. It is bes
minimis
<15mA
6. Calculat
Fig. 8
r: DS35359 Rev. 4
ons Informa
Fig.7 1V Cur
ide
ine I
OUT
and ch
ine I
B
from
B I =
ine I
R3
from
3 R I
ine R3 from
3 R
st to let the ZXR
e the strain on
for this current
te R4 from
4 R =
8 1.15V Over
0
- 2
ation (cont.
rrent-Booste
hoose a suitable
) 1 (min) FE h (
(max) OUT I
+
(max) OUT I =
3 R I
OUT V IN V
3
−
=
RD060 supply a
Q1, it also gua
t, I
R4
.
4 R I
BE V
=
r-Voltage Ind
0.6V DUAL
w
.)
ed Shunt Reg
e transistor tak
as much curren
arantees the m
dicator
L ADJUSTA
8 of 12
www.diodes.com
gulator
king power diss
nt as it can bef
most stable ope
V
OUT
goes low a
⎜
⎝
⎛ +
> 1 REF V M V
3 R I
F V ( IN V
3 R
−
=
I 3 R I mA 15
≤ ≥
V
F
and I
F
are fo
ABLE PRE
m
A
Dio
=
OUT V
(
OUT V
I V
3 R =
sipation into co
fore bringing Q
ration. Choose
and LED1 is lit w
⎟
⎠
⎞
+
2 R
1 R
) 2 . 0 +
) MAX ( F
orward voltage dr
CISION SH
A Product Li
odes Incorpo
⎟
⎠
⎞
⎜
⎝
⎛ +
=
2 R
1 R
1 REF V
BE V V 2 . 0 + ≥ )
3 R I
OUT V N −
nsideration.
1 into conducti
e a nominal val
when monitored s
rop and current o
Z
HUNT REG
© Dio
ine of
orated
ion. Not only do
ue between 10
supply
of LED1.
ZXRD060
GULATOR
August 2011
odes Incorporated
oes this
0mA and