Lineage Power
9
Advance Data Sheet
April 2008
18 Vdc to 36 Vdc Inputs; 16 W
LC016 Dual-Output Series Power Modules:
Feature Descriptions (continued)
Remote On/Off
Two remote on/off options are available. Positive logic remote on/off turns the module on during a logic high volt-
age on the remote on/off pin, and off during a logic low. Negative logic (code suffix of 1) remote on/off turns the
module off during a logic high and on during a logic low.
To turn the power module on and off, the user must supply a switch to control the voltage between the
on/off terminal and the VI(–) terminal (Von/off). The switch can be an open collector or equivalent (see Figure 10). A logic low is Von/off = 0 V to 1.2 V, during which the module is off. The maximum Ion/off during a logic low is 1 mA. The
switch should maintain a logic low voltage while sinking 1 mA.
During a logic high, the maximum Von/off generated by the power module is 6 V. The maximum allowable leakage
current of the switch at Von/off = 6 V is 50 A.
8-758.a(C)
Figure 10. Remote On/Off Implementation
Output Voltage Adjustment
Output voltage trim allows the user to increase or decrease the output voltage set point of a module. This is
accomplished by connecting an external resistor between the TRIM pin and either the VO(+) or VO(–) pins. With an
external resistor between the TRIM and VO(+) pins (Radj-down), the output voltage set point (VO, adj) decreases. With
an external resistor between the TRIM and VO(–) pins (Radj-up), VO, adj increases.
The following equation determines the required external resistor value to obtain an output voltage change of %:
Device
ab
cd
–5% VO Radj-down
+5% VO Radj-up
LC016AJ
3.56
8.4
1.19
3.65
62.8 k
20.1 k
LC016BK
13.8
30.1
1.60
14.7
246 k
17.3 k
LC016CL
15.5
31.6
1.41
14.7
278 k
13.5 k
+
Ion/off
-
Von/off
REMOTE
ON/OFF
VI(+)
VI(-)
Radj-down
100a
Δ%
------------- b
–
k
=
Radj-up
100c
Δ%
-------------d
–
k
=