psb243-7ir Power-One, psb243-7ir Datasheet - Page 7

• Manufacturer Part Number: psb243-7ir
• Description: Psb Series Extended Positive Switching Regulators Rugged
• Manufacturer: Power-One

REV. OCT 17, 2003
Fig. 10
Voltage adjustment with V
a) V
Table 4: Inhibit characteristics
R Control for Output Voltage Adjustment
Note: With open R input, V
The output voltage V
nal voltage ( V
The adjustment range is 0…108% of V
differential voltage D V
Electrical Input Data ) should be maintained. Under-volt-
age lock-out = Minimum input voltage.
Characteristics
V
t
t
I
Caution: To prevent damage V
20 V, nor be negative and R
47 k .
i inh
r
f
inh
V
o
ext
= 0 – 108% V
+
2.5 V • –––––
V
Inhibit input voltage to keep
regulator output voltage -
Switch-on time after inhibit command
Switch-off time after inhibit command
Input current when inhibited
ext
R
G
ext
Go –
) or with an external resistor ( R
V
o nom
o nom
V
4000
V
o
o
ref
io min
can either be adjusted with an exter-
, using V
ext
between input and output (see:
o
³ V
Vo+
between R and G (Go–)
2
should never be less than
V
o nom
+
–
ext
o
between R and G (Go–)
ex
V
. R excludes option P.
06035
o nom
should not exceed
V
V
o nom
o
o
• –––––
= on
= off
. The minimum
2.5 V
V
ext
1
or R
Page 7 of 13
2
).
V
T
V
R
V
Conditions
i min
C min
i
i
L
Positive Switching Regulators (Rugged)
= V
= V
= V
Fig. 11
Voltage adjustment with external resistor R
b) V
c) V
LED Output Voltage Indicator
A yellow output indicator LED shines when the output volt-
age is higher than approx. 3 V.
- V
i nom
i nom
- T
o nom
V
R
V
i max
C max
o
o
o
o
2
= 0 – 100% V
= 100 – 108% V
/ I
V
PSB Series Extended Data Sheet
o nom
––––––––––––––––––––––––
––––––––––––––––––––––––––––––––
R
R
o nom
4000
2.5 V • ( R
2
1
• –––––––––––
2.5 V • ( V
R
G
R
• V
Go –
1
2
o nom
V
o
+ 4000
+ 4000 ) – V
o nom
• ( V
+2.4
R
min
–50
V
o nom
4000
ref
o
1
, using R
– V
o nom
• 2.5 V • R
, using R
o nom
typ
– 2.5 V)
12
24
10
Vo+
1
)
between R and G (Go–):
+
o nom
–
2
between R and Vo+:
2
max
+0.8
+50
R
• 4000
06036
1
1
––––––––––
4000
or R
V
o nom
2
V DC
Unit
mA
ms
- V
• V
o
o