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ZY1207 7A No-Bus POL Data Sheet
3V to 14V Input ? 0.5V to 5.5V Output
4.
Electrical Specifications
Specifications apply at the input voltage from 3V to 14V, output load from 0 to 7A, ambient temperature from -40°C
to 85°C, output capacitance consisting of 110 μ F ceramic and 220 μ F tantalum, and default performance
parameters settings unless otherwise noted.
4.1
Input Specifications
Parameter
Conditions/Description
Min
Nom
Max
Units
At V IN <4.75V, VLDO pin needs to be
Input voltage (V IN )
connected to an external voltage source
3
14
VDC
higher than 4.75V
Input Current (at no load)
Undervoltage Lockout (VLDO
connected to VIN)
Undervoltage Lockout (VLDO
connected to V AUX =5V)
V IN ≥ 4.75V, VLDO pin connected to VIN
Ramping Up
Ramping Down
Ramping Up
Ramping Down
50
4.00
3.9
2.8
2.7
mADC
VDC
VDC
VDC
VDC
External Low Voltage Supply
VLDO Input Current
Connect to VLDO pin when V IN <4.75V
Current drawn from the external low
voltage supply at VLDO=5V
4.75
50
14
VDC
mADC
4.2
Output Specifications
Parameter
Conditions/Description
Min
Nom
Max
Units
Output Current (I OUT )
V IN MIN to V IN MAX
-7
1
7
ADC
Programmable with a resistor between
Accuracy
Output Voltage Range (V OUT )
Output Voltage Setpoint
3
2
TRIM and REF pins
Default (no resistor)
V IN =12V, I OUT =0.5*I OUT MAX , room
temperature
0.5
5.5
0.5
See Ordering Information
VDC
VDC
Line Regulation
3
V IN MIN to V IN MAX
±0.2
%V OUT
Load Regulation
3
0 to I OUT MAX
±0.2
%V OUT
Dynamic Regulation
Peak Deviation
Peak Deviation
Settling Time
Output Voltage Peak-to-Peak
Ripple and Noise
BW=20MHz
Full Load
Temperature Coefficient
Slew rate 1A/ μ s, 50-75% load step,
V IN ≥5 V
V IN =3.3V
to 10% of peak deviation
V IN =5.0V, V OUT ≤ 2.5V
V IN =5.0V, V OUT >2.5V
V IN =12V, V OUT ≤ 2.5V
V IN =12V, V OUT >2.5V
V IN =12V, I OUT =0.5*I OUT MAX
75
100
30
15
25
25
40
50
mV
mV
μ s
mV
mV
mV
mV
ppm/°C
Switching Frequency
450
500
550
kHz
1
At the negative output current (bus terminator mode) efficiency of the ZY1207 degrades resulting in increased internal power dissipation.
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
ZY1207 is a step-down converter, thus the output voltage is always lower than the input voltage as show in Figure 1.
3
Digital PWM has an inherent quantization uncertainty of ±6.25mV that is not included in the specified static regulation parameters.
ZD-00697 Rev. 2.1, 11-Oct-2011
www.power-one.com
Page 3 of 18
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