DDR12 データシートの表示（PDF） - Artesyn Technologies
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DDR12 Datasheet PDF : 11 Pages
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Input Characteristics
Characteristic
Symbol
Min
Input current - operating
Reflected ripple current
Iin
Iin (ripple)
Input capacitance - internal
filter
Input capacitance - external
filter
Cinput
Cbypass
DDR12 Series | Tracking Dual Output
DC-DC Converters
Typ
Max
7.2
35
50
420
10
Units
Notes and Conditions
Adc
mA rms measured with external filter.
mA pk-pk See Application Note 133 for
details
µF
µF
Use large value ceramic
Electrical Charact. - Vddq O/P
Characteristic
Symbol
Nominal set-point voltage
Output voltage range
Vddq (nom)
Vddq
Min
2.316
Output set-point accuracy
Load regulation
Line regulation
Cross regulation
Temperature co-efficient
Ripple and noise
Load transient response -
peak deviation
Load transient response -
recovery
External load capacitance
Cext (Vddq)
1000
Overshoot
Undershoot
Output current - continuous
Iddq
1.5
Output current - short circuit Isc-ddq
Typ
2.316
Max
2.750
±1.5
+0/-1
±0.1
±0.4
±2.5
+1/-2
±0.2
±0.6
0.2
50
3
200
1680
3000
2.0
150
25
0
Units
Notes and Conditions
Vdc
With no external trim resistor
Vdc
For details on trimming the
output voltage see
Application Note 133
%
Using 1% trim resistors
measured at minimum load
%
Vary load with line held constant
(Voltage typically drops with load)
%
Vary line with load held constant
Vary load on Vtt with load on
Vddq held constant
mV/ºC
mV pk-pk With recommended external
load capacitance and
5 Hz to 20 MHz bandwidth
%
Peak deviation for 75% to 100%
step load, di/dt = 0.04 A/µs
µs
Settling time to within 1% of
output setpoint voltage for
75% to 100% step load
µF
Recommended 3 x 560 µF with
total ESR of 5 mΩ and additional
high-quality ceramic capacitors.
Consult factory for other capacitance
%
Nominal output at turn-on
mVdc
Adc
A rms
Latching short circuit protection
power or enable needs to be
cycled
5
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File Name: lf_ddr12.pdf Rev: 29 Nov 2005
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