Input:9-36V
Output:1.8V
Current:14A
Part No.:IQ18018SKx14
Technical Specification
IQ18018SKx14 Electrical Characteristics (1.8Vout)
Ta = 25°C, airflow rate = 300 LFM, Vin = 18Vdc 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.
Parameter
Min.
Typ.
Max. Units Notes & Conditions
INPUT CHARACTERISTICS
Maximum Input Current
No-Load Input Current
5.0
280
14
A
mA
mA
V
Vin min; trim up; in current limit
225
10
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
0.04
220
250V/ms; see Figure 6
RMS
mA
A
20
Fast acting external fuse recommended
1.782
1.8
1.818
V
±0.1
±0.1
±0.3
±0.3
27
%
%
mV
V
Over Load
Over Temperature
-27
Total Output Voltage Range
Output Voltage Ripple and Noise
Peak-to-Peak
1.755
1.845
Over sample, line, load, temperature & life
20MHz bandwidth; see Note 1
Full load
0
0
35
8
70
20
14
mV
mV
A
RMS
Full load
Operating Output Current Range
Output DC Current-Limit Inception
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 (0.1A/µs)
Settling Time
Subject to Thermal Derating; see Note 4
16.8
1.8
2
A
A
Negative current drawn from output
mA
µF
Negative current drawn from output
10,000
Vout nominal at full load (resistive load); See Note 2
75
mV
µs
%
%
V
50% to 75% to 50% Iout max
To within 1% Vout nom
100
Output Voltage Trim Range
Output Voltage Remote Sense Range
Output Over-Voltage Protection
EFFICIENCY
-10
2.1
10
10
Across Pins 8&4; Common Figures 3-5; see Note 3
Across Pins 8&4
2.3
2.5
Over full temp range
100% Load
79
78
%
%
See Figure 1 for efficiency curve
See Figure 1 for efficiency curve
50% Load
Note 1: Output is terminated with 1µF ceramic and 15µF low-ESR tantalum capacitors. For applications requiring reduced output voltage ripple and
noise, consult SynQor applications support (e-mail: support@synqor.com)
Note 2: Recommended minimum output capacitance is 100uF
Note 3: Trim-up range is limited below 10% at low line and full load. Contact SynQor applications support for more detail (email: support@synqor.com)
Note 4: Output Current Range limited below rated at input voltages less than 12V
Product # IQ18xxxSKxxx
Phone 1-888-567-9596
www.synqor.com
Doc.# 005-0005462 Rev. C
05/27/10
Page 8
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