NCP5173(2004) 查看數據表（PDF） - ON Semiconductor
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NCP5173 Datasheet PDF : 18 Pages
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NCP5173
ELECTRICAL CHARACTERISTICS (2.7 V < VCC < 30 V; 0°C < TJ < 125°C; for all specifications unless otherwise stated.)
Characteristic
Test Conditions
Min
Typ
Max
Positive and Negative Error Amplifiers
FB Reference Voltage
FB Input Current
FB Reference Voltage Line Regulation
Error Amp Transconductance
Error Amp Gain
VC tied to FB; measure at FB
FB = VREF
VC = FB
IVC = "25 mA
(Note 2)
1.246
−1.0
−
300
200
1.276
0.1
0.01
550
500
1.300
1.0
0.03
800
−
VC Source Current
VC Sink Current
VC High Clamp Voltage
VC Low Clamp Voltage
VC Threshold
Oscillator
FB = 1.0 V or NFB = −1.9 V, VC = 1.25 V
25
FB = 1.5 V or NFB = −3.1 V, VC = 1.25 V
200
FB = 1.0 V or NFB = −1.9 V;
1.5
VC sources 25 mA
FB = 1.5 V or NFB = −3.1 V, VC sinks 25 mA
0.25
Reduce VC from 1.5 V until switching stops
0.75
50
625
1.7
0.50
1.05
90
1500
1.9
0.65
1.30
Base Operating Frequency
FB = 1.0 V
460
560
620
Reduced Operating Frequency
FB = 0 V
60
104
160
Maximum Duty Cycle
−
82
90
−
FB Frequency Shift Threshold
Frequency drops to reduced operating
frequency
0.36
0.40
0.44
Sync/Shutdown
Sync Range
−
640
−
1000
Sync Pulse Transition Threshold
Rise time = 20 ns
2.5
−
−
SS Bias Current
SS = 0 V
SS = 3.0 V
−15
−3.0
−
−
3.0
8.0
Shutdown Threshold
−
0.50
0.85
1.20
Shutdown Delay
Power Switch
Switch Saturation Voltage
Switch Current Limit
2.7 V ≤ VCC ≤ 12 V
12 V < VCC ≤ 30 V
ISWITCH = 1.5 A (Note 2)
ISWITCH = 1.0 A, 0°C t TJ ≤ 85°C
ISWITCH = 1.0 A, −40°C ≤ TJ t 0°C
ISWITCH = 10 mA
50% Duty cycle (Note 2)
80% Duty cycle (Note 2)
12
80
350
12
36
200
−
0.8
1.4
−
0.55
−
−
0.75
−
−
0.09
0.45
1.6
1.9
2.4
1.5
1.7
2.2
Minimum Pulse Width
DICC/ DIVSW
FB = 0 V, ISW = 4.0 A (Note 2)
200
250
300
2.7 V ≤ VCC ≤ 12 V, 10 mA ≤ ISW ≤ 1.0 A
−
12 V < VCC ≤ 30 V, 10 mA ≤ ISW ≤ 1.0 A
−
2.7 V ≤ VCC ≤ 12 V, 10 mA ≤ ISW ≤ 1.5 A
−
(Note 2)
12 V < VCC ≤ 30 V, 10 mA ≤ ISW ≤ 1.5 A
−
(Note 2)
10
30
−
100
17
30
−
100
Switch Leakage
VSW = 40 V, VCC = 0V
2. Guaranteed by design, not 100% tested in production.
−
2.0
100
Unit
V
mA
%/V
mMho
V/V
mA
mA
V
V
V
kHz
kHz
%
V
kHz
V
mA
V
ms
V
A
ns
mA/A
mA
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