ncp3170 ON Semiconductor, ncp3170 Datasheet - Page 4

• Manufacturer Part Number: ncp3170
• Description: Ncp3170 Synchronous Pwm Switching Converter
• Manufacturer: ON Semiconductor

ELECTRICAL CHARACTERISTICS
(Note 7))
SUPPLY CURRENT
UNDER VOLTAGE LOCKOUT
MODULATOR
OVER CURRENT
PWM COMPENSATION
ENABLE
POWER GOOD
PWM OUTPUT STAGE
THERMAL SHUTDOWN
4. Guaranteed by design
5. Ambient temperature range of −40°C to +85°C.
6. This is not a protection feature.
7. The device is not guaranteed to operate beyond the maximum operating ratings.
Input Voltage Range
Quiescent Supply Current
Shutdown Supply Current
VIN UVLO Threshold
VIN UVLO Threshold
Oscillator Frequency
Maximum Duty Ratio
Minimum Duty Ratio
VIN Soft Start Ramp Time
Current Limit
VFB Feedback Voltage
Line Regulation
GM
AOL DC gain
Unity Gain BW (C
Input Bias Current (Current Out of FB IB Pin)
IEAOP Output Source Current
IEAOM Output Sink Current
Enable Threshold
Power Good High On Threshold
Power Good High Off Threshold
Power Good Low On Threshold
Power Good Low Off Threshold
Over Voltage Protection Threshold
Power Good Low Voltage
High−Side Switch On−Resistance
Low−Side Switch On−Resistance
Thermal Shutdown
Hysteresis
OUT
Characteristic
= 10 pF)
(T
A
= 25°C, V
NCP3170A
NCP3170B
NCP3170A
NCP3170B
NCP3170A
NCP3170B
IN
= V
http://onsemi.com
EN
= 12 V, V
V
IN
V
V
V
IN
IN
4
IN
= EN = 12 V V
EN = 0 V (Note 5)
Falling Edge (Note 5)
= 12 V, IPG = 500 mA
Rising Edge (Note 5)
(Notes 4 and 6)
V
Enable = V
Conditions
FB
OUT
V
V
V
V
V
T
V
V
(Note 5)
(Note 5)
(Note 4)
(Note 4)
(Note 4)
(Note 4)
(Note 5)
IN
IN
IN
A
IN
IN
FB
FB
= VCOMP
= 25°C
= 4.5 V
= 4.5 V
= 12 V
= 12 V
= 12 V
= 3.3 V for min/max values unless otherwise noted
= 0 V
= 2 V
FB
IN
= 0.8 V
0.788
Min
450
900
4.5
6.0
7.5
3.5
4.0
2.0
91
40
0.195
1000
4.41
4.13
20.1
21.3
1.41
Typ
500
201
875
859
712
728
998
100
164
1.7
2.0
4.6
0.8
13
55
90
25
29
43
1
0.812
1100
Max
550
286
130
150
2.0
2.4
6.0
6.0
18
17
96
35
39
MHz
Unit
kHz
mW
mW
mA
mV
mV
mV
mV
mV
ms
dB
nA
mA
mS
mA
mA
°C
°C
%
%
%
V
V
V
A
V
V
V