
PMH
·All specifications are subject to change without notice.
1-1. Connection diagram
Lin:
1.0μH
Cin. ex: 1000 μ F (aluminum electrolysis capacitor) +
2x100μF (tantalum capacitor)
Co. ex: 10μF (OS capacitor) + 1μF (ceramic capacitpr)
1-2. Output voltage setting
Output voltage can be programmed within the output volt-
age adjustable range by connecting a resistance or ap-
plying voltage between Trim terminal and GND terminal.
When nothing is connected externally, the output voltage
is 0.75V.
Use the expressions below to calculate the value of resis-
tance and the voltage to be applied.
PMH-AD16RPVMD
Setting by external resistance
Expression
Setting by voltage application
Expression
V trim=0.6993 0.1690 ×(Vout 0.7513)(V)
PMH-AD16RPVWD
Setting by external resistance
Expression
Setting by voltage application
Expression
V trim=0.7 0.0667 ×(Vout 0.7525)(V)
PMH Instruction Manual
Vo
on/off
Vin
R trim
Co,ex
LOAD
Lin
Cin,ex
1
6
5
4
3
2
V
R trim=
21105
5100(Ω)
Vout 0.7513
R trim=
10500
1000(Ω)
Vout 0.7525
1-3. Remote sensing
By connecting Vo Sense terminal (3 pins) to the load
terminal, the voltage drop in the system load line can be
compensated for.
The output voltage compensation value should be within 5%
of the output voltage. (Voltage drop in Rdistribution should
be within 5% of the output.)
Also, the output voltage at the load terminal (Load) should
be within the voltage adjustable range.
When not using the remote sensing function, connect Vo
Sense terminal ( 3 pins) and Vo terminal (5 pins).
Current in the remote sensing line is small. In wiring, due
attention should be paid to effect of noise.
1-4. Remote On/Off
Output On/Off can be controlled by setting a switch (open
collector system) between Remote On/Off terminal (2 pins)
and GND.
On/Off terminal in low level: Output Off
On/Off terminal open: Output On
Low level
On/Off terminal voltage: Von/off < 0.5V
On/Off terminal source current: lon/off-max. = 200μA
Open
On/Off terminal maximum voltage: Von/off-max. = 5.5V
(M type), 14V (W type)
Allowable leakage current: lon/off-max. = 10μA
1-5. Over voltage protection
This product is not equipped with a function for over volt-
age protection.
1. PMH-AD16RPVMD, PMH-AD16RPVWD