NCP1252ADR2G ON Semiconductor, NCP1252ADR2G Datasheet - Page 4

• Manufacturer Part Number: NCP1252ADR2G
• Description: IC PWM CTLR CURRENT MODE 8-SOIC
• Manufacturer: ON Semiconductor

Specifications of NCP1252ADR2G

• Frequency - Max: 500kHz
• Pwm Type: Current Mode
• Number Of Outputs: 1
• Duty Cycle: 50%
• Voltage - Supply: 9 V ~ 28 V
• Buck: No
• Boost: No
• Flyback: Yes
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: -25°C ~ 125°C
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Duty Cycle (max): 48 %
• Mounting Style: SMD/SMT
• Switching Frequency: 92 KHz to 550 KHz
• Maximum Operating Temperature: + 125 C
• Fall Time: 22 ns
• Rise Time: 26 ns
• Synchronous Pin: No
• Topology: Flyback, Forward
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 3. ELECTRICAL CHARATERISTICS
(V
SUPPLY SECTION AND V
Startup threshold at which driving pulses are au-
thorized
Minimum Operating voltage at which driving pulses
are stopped
Hysteresis between V
Start−up current, controller disabled
Internal IC consumption, controller switching
Internal IC consumption, controller switching
CURRENT COMPARATOR
Current Sense Voltage Threshold
Leading Edge Blanking Duration
Input Bias Current
Propagation delay
Internal Ramp Compensation Voltage level
Internal Ramp Compensation resistance to CS pin
INTERNAL OSCILLATOR
Oscillator Frequency
Oscillator Frequency
Frequency Modulation in percentage of f
Frequency modulation Period
Maximum operating frequency
Maximum duty−cycle – A version
Maximum duty−cycle – B version
Maximum duty−cycle – C version
FEEDBACK SECTION
Internal voltage division from FB to CS setpoint
Internal pull−up resistor
FB pin maximum current
Internal feedback impedance from FB to GND
Open loop feedback voltage
Internal Diode forward voltage
DRIVE OUTPUT
DRV Source resistance
DRV Sink resistance
Output voltage rise−time
Output voltage fall−time
3. Guaranteed by design
4. V
CC
ramp
= 15 V, R
, R
ramp
T
= 43 kW, C
Guaranteed by design
Characteristics
CC(on)
DRV
CC
and V
MANAGEMENT
= 1 nF. For typical values T
CC(min)
OSC
V
R
R
CC
T
T
F
F
From CS detected to gate
= 8.5 kW & DRV pin = 47 kW
sw
sw
V
V
= 43 kW & DRV pin = 47 kW
http://onsemi.com
< V
CC
CC
J
=100 kHz, C
=100 kHz, DRV = open
= 25°C, for min/max values T
@ 25°C (Note 4)
@ 25°C (Note 4)
V
Test Condition
CC(on)
V
= 15 V, C
= 15 V, C
FB pin = GND
FB pin = open
CC
CC
10 to 90%
90 to 10%
from zero
turned off
(Note 3)
(Note 3)
(Note 3)
(Note 3)
(Note 3)
decreasing
increasing
4
& V
DRV
DRV
CC
DRV
increasing
= 1nF,
= 1nF,
= 1 nF
V
Symbol
DC
DC
DC
J
V
V
R
V
CC(HYS)
V
R
T
R
R
V
FB
f
f
f
CC(on)
CC(off)
I
I
I
pull−up
= –25°C to +125°C, unless otherwise noted)
t
I
t
f
Z
OSC
OSC
swing
MAX
FBOL
CC1
CC2
CC3
ILIM
I
LEB
bias
ramp
jitter
SINK
ramp
ILIM
V
SRC
FB
maxA
maxB
maxC
FB
t
t
r
f
div
f
0.92
3.15
45.6
Min
425
500
9.4
8.4
0.9
0.5
2.0
1.5
92
76
61
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
0.02
26.5
3.33
0.75
Typ
160
100
500
1.0
1.4
2.7
3.5
3.5
6.0
10
70
±5
48
80
65
40
10
26
22
9
−
1
−
3
−
6
Max
10.6
1.08
3.85
49.6
100
150
108
550
9.6
2.2
3.5
84
69
30
19
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
Unit
kHz
kHz
kHz
mA
mA
mA
kW
ms
kW
kW
mA
ns
mA
ns
ns
ns
%
%
%
%
W
W
V
V
V
V
V
V
V
−