
2
H SERIES AC/DC
INPUT SPECIFICATIONS (NOTE 1)
PARAMETER
CONDITIONS/DESCRIPTION
MIN
NOM
MAX
UNITS
Input Voltage - AC
Continuous input range.
85
255
VAC
Input Frequency
AC Input.
47
63
Hz
Hold-up Time
At 85VAC.
5.0
At 110VAC.
10.7
mS
No Load Input Power
Single output models, nominal input.
2.5
Dual output models, nominal input.
9.0
W
Triple output models, nominal input
9.0
Input Current
230 VAC at full rated load.
0.44
ARMS
Input Protection
Non-user serviceable internal AC input line fuse, 250V, slow blow.
2.5
A
Inrush Surge Current
Internally limited by thermistor, one cycle, 25°C, 255VAC.
42
APK
NOTE: 1) All parameters measured at Tc=25°C, pins 2 and 23 connected, nominal input voltage and full rated load unless otherwise noted.
OUTPUT SPECIFICATIONS (NOTE 1)
PARAMETER
CONDITIONS/DESCRIPTION
MIN
NOM
MAX
UNITS
Efficiency
Full rated load, 230VAC. Varies with distribution of loads among outputs.
74
83
%
Minimum loads
Minimum load required for regulation.
0
Amps
Ripple and Noise
Full load, 20 MHz bandwidth.
See Model Selection Charts
Output Power
5V single output model
56.1
12V single output model
72.0
15V single output model
67.5
Watts
24V single output model
72.0
48V single output model
72.0
Dual and triple output models
See Model Selection Chart
Overshoot / Undershoot
Output voltage overshoot/undershoot at turn-on.
0
V
Transient Response
Recovery time, to within 1% of initial set point due to a 50-100% load change,
120
S
4% max. deviation. (Main output only on multi-output units).
Turn-on Rise Time
Time required for output voltage to
5V single output model
5
25
rise from 10% to 90%, 100% load.
12V single output model
10
40
15V single output model
15
50
24V single output model
20
70
mS
48V single output model
85
230
Dual output models
25
80
Triple output models
75
210
NOTE: 1) All parameters measured at Tc=25°C, pins 2 and 23 connected, nominal input voltage and full rated load unless otherwise noted.
Graph 3
LH3020-2 Cross-Regulation
Graph 1
LH2320-2 Cross-Regulation
Graph 2
LH2540-2 Cross-Regulation
Graph 4
LH3040-2 Cross-Regulation