Technical Specification
Input:
Output:
Current:
Part no.:
9 - 36 V
40 V
4.5 A
IQ18400HPC4F
IQ18400HPC4F electrical Characteristics (40.0 Vout)
Parameter
InPUt CHARACteRIstICs
Maximum Input Current
No-Load Input Current
Disabled Input Current
Response to Input Transient
Input Terminal Ripple Current
Recommended Input Fuse
OUtPUt CHARACteRIstICs
Output Voltage Set Point
Output Voltage Regulation
Over Line
Over Load
Over Temperature
Total Output Voltage Range
Output Voltage Ripple and Noise
Peak-to-Peak
RMS
Operating Output Current Range
Output DC Current-Limit Inception
Output DC Current-Limit Shutdown Voltage
Back-Drive Current Limit while Enabled
Back-Drive Current Limit while Disabled
Maximum Output Capacitance
Output Voltage during Load Current Transient
Step Change in Output Current (0.1 A/µs)
Settling Time
Output Voltage Trim Range
Output Voltage Remote Sense Range
Output Over-Voltage Protection
eFFICIenCY
100% Load
50% Load
Ta = 25 °C, airflow rate = 300 LFM, Vin = 18 V dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C baseplate
temperature with appropriate power derating. Specifications subject to change without notice.
Min.
typ.
240
2
1.75
310
Max.
29.7
300
4
Units notes & Conditions
A
mA
mA
V
mA
A
V
%
%
mV
V
mV
mV
A
A
V
A
mA
µF
mV
µs
%
%
V
%
%
Vin min; trim up; in current limit
3.0
39.6
40
±0.1
±0.1
-600
39.00
0
0
5.0
140
20
5.4
26
0.15
4
40.4
±0.3
±0.3
600
41.00
280
40
4.5
5.9
500 V/ms; see Figure 6
RMS
Fast acting external fuse recommended
Over sample, line, load, temperature & life
20 MHz bandwidth; see Note 1
Full load
Full load
Subject to thermal derating
Output voltage 10% Low
Negative current drawn from output
Negative current drawn from output
Vout nominal at full load (resistive load)
50% to 75% to 50% Iout max
To within 1% Vout nom
Across Pins 8&4; Common Figures 3-5; see Note 2
Across Pins 8&4
Over full temp range
See Figure 1 for efficiency curve
See Figure 1 for efficiency curve
150
2300
80
-20
46.8
48.8
89
91
10
10
50.8
Note 1: Output is terminated with 1 µF ceramic capacitor. For applications requiring reduced output voltage ripple and noise, consult SynQor
applications support (e-mail: support@synqor.com)
Note 2: Trim-up range is limited below 10% at low line and full load.
Product # IQ18xxxHPCxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-005029 Rev. B
04/13/09
Page 20
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