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NCP1580 Datasheet(PDF) 4 Page - ON Semiconductor

Part No. NCP1580
Description  Low Voltage Synchronous Buck Controller
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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NCP1580 Datasheet(HTML) 4 Page - ON Semiconductor

 
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NCP1580
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS (−40
°C < TA < 85°C, −40°C < TJ < 125°C (Note 1), 4.5 V < VCC < 13.2 V, 4.5 V < BST < 26.5 V,
CTG = CBG = 1.0 nF, for min/max values unless otherwise noted.)
Characteristic
Conditions
Min
Typ
Max
Unit
Input Voltage Range
4.5
13.2
V
Boost Voltage Range
4.5
26.5
V
Supply Current
Quiescent Supply Current
VFB = 1.0 V, No Switching
VCC = 13.2 V
1.0
1.75
mA
Boost Quiescent Current
VFB = 1.0 V, No Switching
140
mA
Undervoltage Lockout
UVLO Threshold
VCC Rising Edge
3.85
4.2
V
UVLO Hysteresis
0.5
V
Switching Regulator
VFB Feedback Voltage,
Control Loop in Regulation
TA = 0 to 70°C
TA = −40 to 85°C
0.788
0.784
0.800
0.812
0.816
V
Oscillator Frequency
288
350
412
kHz
Ramp−Amplitude Voltage
1.1
V
Minimum Duty Cycle
0
%
Maximum Duty Cycle
85
90
95
%
Minimum Pulse Width
Static Operating (Note 2)
50
100
150
nsec
Error Amplifier
DC Gain
(Note 2 )
70
80
dB
Gain−Bandwidth Product
(Note 2)
8.0
10
MHz
Slew Rate
COMP_GND = 100 pF (Note 2)
2.0
4.0
V/
mS
FB Bias Current
VFB = 1 V (Note 2)
0.1
1.0
mA
Gate Drivers
TG Rise Time
6.0
15
ns
TG Fall Time
Load = 1.0 nF
15
30
ns
BG Rise Time
Load = 1.0 nF
VCC = 8.0 V
6.0
15
ns
BG Fall Time
6.0
15
ns
TG Sink Current
1.0
A
TG Source Current
VCC = 12 V
VTG =VBG =20V
1.5
A
BG Sink Current
VTG = VBG = 2.0 V
(Note 2)
1.5
A
BG Source Current
()
1.5
A
PHASE falling to BG rising delay
VCC = 12 V
PHASE < 2.0 V
BG > 2.0 V
30
90
ns
BG falling to TG rising delay
VCC = 12 V
BG < 2.0 V
TG > 2.0 V
30
40
ns
Internal Soft−Start
Time
1.0
2.0
3.0
ms
Thermal Shutdown
Overtemperature Trip Point
(Note 2)
160
°C
1. Specifications to −40
°C are guaranteed via correlation using standard statistical quality control (SQC), not tested in production.
2. Guaranteed by design, not tested in production.


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