NCP1575 ON Semiconductor, NCP1575 Datasheet - Page 5

• Manufacturer Part Number: NCP1575
• Description: Low Voltage Synchronous Buck Controller
• Manufacturer: ON Semiconductor

3. Characteristics at temperature extremes are guaranteed via correlation using quality statistical control methods.
4. Guaranteed by design. Not tested in production.
ELECTRICAL CHARACTERISTICS
C
GATE(H) and GATE(L)
PWM Comparator
Oscillator
General Electrical Specifications
Rise Time
Fall Time
GATE(H) to GATE(L) Delay
GATE(L) to GATE(H) Delay
Minimum Pulse Width
High Voltage (AC)
Low Voltage (AC)
PWM Comparator Offset
Ramp Max Duty Cycle
Artificial Ramp
Transient Response
V
Switching Frequency
V
Start Threshold
Stop Threshold
Hysteresis
COMP
GATE(H)/(L) Pull−Down
FB
CC
Input Range
Supply Current
= 0.1 mF, R
Characteristic
OSC
= 74 kW; unless otherwise specified.) Note 3
(0 C < T
1.0 V < GATE(L), GATE(H) < V
V
GATE(H) < 2.0 V, GATE(L) > 2.0 V
GATE(L) < 2.0 V, GATE(H) > 2.0 V
GATE(X) = 4.0 V
Measure GATE(L) or GATE(H)
Measure GATE(L) or GATE(H)
Resistance to GND. Note 4
V
Duty Cycle = 50%, R
COMP = 1.5 V, V
Note 4
R
R
COMP = 0 V (No Switching)
GATE(H) Switching, COMP Charging
GATE(H) Not Switching, COMP Discharging
Start − Stop
CC
FB
OSC
OSC
V
V
0.5 nF < C
0.5 nF < C
Starts Switching
CC
CC
J
= 0 V, Increase COMP Until GATE(H)
− 2.0 V < GATE(L), GATE(H) < 1.0 V,
< 125 C, 9.0 V < V
Not Used
= 74 kW
= 12 V
= 12 V
http://onsemi.com
GATE(H)
GATE(H)
NCP1575
Test Conditions
FB
20 mV Overdrive. Note 4
= C
= C
OSC
5
−
CC
GATE(L)
GATE(L)
= 74 kW
< 20 V, C
CC
< 10 nF, Note 4
< 10 nF, Note 4
− 2.0 V,
GATE(H)
= C
GATE(L)
V
0.415
0.75
Min
170
240
CC
0.5
8.0
7.0
40
40
20
50
−
−
−
−
−
−
0
−
= 3.3 nF,
−
0.465
V
Typ
250
200
200
280
9.0
8.5
7.5
1.0
40
40
60
60
50
80
63
CC
0
−
0.525
Max
1.25
105
105
115
300
230
320
0.5
1.4
9.0
8.0
80
80
75
12
−
−
−
Unit
kHz
kHz
mV
mA
kW
ns
ns
ns
ns
ns
ns
%
V
V
V
V
V
V
V