ZY1207 Power-One, ZY1207 Datasheet - Page 3

• Manufacturer Part Number: ZY1207
• Description: 3v To 14v Input 0.5v To 5.5v Output
• Manufacturer: Power-One

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4.
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 110PF ceramic and 220PF tantalum, and default performance
parameters settings unless otherwise noted.
4.1
4.2
1
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
3
REV. 1.3 MAR 27, 2006
ZY1207 is a step-down converter, thus the output voltage is always lower than the input voltage as show in Figure 1.
Digital PWM has an inherent quantization uncertainty of ±6.25mV that is not included in the specified static regulation parameters.
At the negative output current (bus terminator mode) efficiency of the ZY1207 degrades resulting in increased internal power dissipation.
Undervoltage Lockout (VLDO
Undervoltage Lockout (VLDO
Output Voltage Range (V
Output Voltage Peak-to-Peak
External Low Voltage Supply
Electrical Specifications
Input Current (at no load)
Output Voltage Setpoint
Temperature Coefficient
Input Specifications
connected to V
Output Specifications
Output Current (I
Switching Frequency
Dynamic Regulation
VLDO Input Current
Input voltage (V
connected to VIN)
Load Regulation
Ripple and Noise
Line Regulation
Peak Deviation
Peak Deviation
Settling Time
BW=20MHz
Parameter
Parameter
Accuracy
Full Load
AUX
3
OUT
=5V)
IN
3
3
)
)
OUT
)
connected to an external voltage source
Programmable
V
Connect to VLDO pin when V
At V
IN
Current drawn from the external low
Slew rate 1A/Ps, 50-75% load step,
t4.75V, VLDO pin connected to VIN
V
IN
IN
voltage supply at VLDO=5V
=12V, I
V
Conditions/Description
<4.75V, VLDO pin needs to be
Conditions/Description
to 10% of peak deviation
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IN
V
V
V
V
=12V, I
TRIM and REF pins
Default (no resistor)
higher than 4.75V
IN
IN
IN
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IN
V
V
Ramping Down
Ramping Down
=5.0V, V
=5.0V, V
=12V, V
=12V, V
IN MIN
IN MIN
Ramping Up
Ramping Up
OUT
temperature
0 to I
2
V
V
with a resistor between
IN
=0.5*I
OUT
IN
=3.3V
to V
to V
OUT MAX
_5V
=0.5*I
OUT
OUT
OUT
OUT
IN MAX
IN MAX
OUT MAX
>2.5V
^2.5V
>2.5V
^2.5V
OUT MAX
3V to 14V Input
ZY1207 7A No-Bus POL Data Sheet
, room
IN
<4.75V
4.75
Min
Min
450
0.5
-7
3
1
See Ordering Information
x
0.5V to 5.5V Output
Nom
Nom
4.00
±0.2
±0.2
100
500
3.9
2.8
2.7
0.5
50
50
75
30
15
25
25
40
50
Page 3 of 18
Max
Max
550
5.5
14
14
7
ppm/°C
%V
%V
mADC
mADC
Units
Units
ADC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
VDC
kHz
mV
mV
mV
mV
mV
mV
Ps
OUT
OUT