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ZY2105 5A No-Bus POL Data Sheet
8V to 14V Input ? 0.5V to 5.5V Output
4.
Electrical Specifications
Specifications apply at the input voltage from 8V to 14V, output load from 0 to 5A, ambient temperature from 0°C
to 70°C, output capacitance consisting of 3x22 ? F ceramics and a 47 ? F tantalum, and the CCA=0 unless otherwise
noted.
4.1
Input Specifications
Parameter
Conditions/Description
Min
Nom
Max
Units
Input voltage (V IN )
Undervoltage Lockout Threshold
Input Current
Maximum Input Current
4.2
Output Specifications
Ramping Up
Ramping Down
V IN =12V, POL is OFF
V IN =8V, V OUT =5.5V
8
7.2
6.8
19
14
3.7
VDC
VDC
VDC
mADC
ADC
-5
Parameter
Output Current (I OUT )
Conditions/Description
V IN MIN to V IN MAX
Programmable with a resistor between
Min
1
0.5
Nom
Max
5
5.5
Units
ADC
VDC
Output Voltage Range (V OUT )
Output Voltage Setpoint
Accuracy 2
Line Regulation 2
TRIM and MARGIN pins
Default (no resistor)
V IN =12V, I OUT =0.5*I OUT MAX , room
temperature
V IN MIN to V IN MAX
0.5
±1.5% or 20mV whichever is
greater
±0.5
VDC
%V OUT
%V OUT
Load Regulation
2
0 to I OUT MAX
±0.5
%V OUT
Dynamic Regulation
Peak Deviation
Settling Time
Output Voltage Peak-to-Peak
Ripple and Noise
BW=20MHz
Full Load
Efficiency
V IN =12V
Full Load
Room temperature
Temperature Coefficient
50% – 100% – 50% load step,
Slew rate 2.5A/ ? s,
to 10% of peak deviation
V IN =12V, V OUT ≤ 1.0V
V IN =12V, V OUT =2.5V
V IN =12V, V OUT =5.0V
V OUT =0.5V
V OUT =0.75V
V OUT =1.0V
V OUT =1.2V
V OUT =1.8V
V OUT =2.5V
V OUT =3.3V
V OUT =5.0V
V IN =12V, I OUT =0.5*I OUT MAX , V OUT =5V
100
60
15
20
25
63.2
71.5
76.8
79.8
84.8
87.9
90.0
92.4
60
mV
? s
mV
mV
mV
%
%
%
%
%
%
%
%
ppm/°C
Switching Frequency
450
500
550
kHz
1
At the negative output current (bus terminator mode) efficiency of the ZY2105 degrades resulting in increased internal power dissipation.
Digital PWM has an inherent quantization uncertainty of ±6.25mV that is not included in the specified static regulation parameters.
Therefore maximum allowable negative current under specific conditions is 20% lower than the current determined from the derating curves
shown in paragraph 5.5
2
ZD-01967 Rev. B1.2
www.power-one.com
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