NCP1280DR2 ON Semiconductor, NCP1280DR2 Datasheet - Page 2

• Manufacturer Part Number: NCP1280DR2
• Description: IC CTRLR PWM PROG OVP HV 16SOIC
• Manufacturer: ON Semiconductor

Specifications of NCP1280DR2

• Output Isolation: Isolated
• Frequency Range: 140 ~ 320kHz
• Voltage - Input: 7 ~ 25 V
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• Number Of Outputs: Dual Output
• Topology: Forward, Half-Bridge
• Output Voltage: - 0.3 V to + 18.3 V
• Output Current: 10 mA
• Switching Frequency: 315 KHz, 158 KHz
• Duty Cycle (max): 80 %
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Fall Time: 12 ns
• Mounting Style: SMD/SMT
• Rise Time: 30 ns
• Synchronous Pin: No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

V
V
in
in
UV/OV
R
R
C
CSKIP
C
FF
C
T
CSKIP
GND
V
AUX
SS
CS
AUX
V
16
SS
R
FF
14
3
5
6
1
9
4
in
7
T
11 mA
6 mA
1.49 V
I
FF
1.3 V*
+
−
V
V
REF
5.3 kW
+
0.6 V
−
6.7 kW
+
−
REF
+
−
I
+
−
3.6 V
START
Disable
* Trimmed during
manufacturing to obtain
1.3 V with R
V
+
−
Disable_ss
AUX(ON)
One Shot
+
−
(600 ns)
+
−
0.5 V
Pulse
+
V
−
+
+
−
−
STOP
−
+
/V
AUX(OFF)
T
Disable
= 101 kW
+
−
Disable_V
Figure 2. NCP1280 Functional Block Diagram
2 V
+
−
+
10 pF
−
I +
CURRENT MIRROR
125 kW
I
−
1
V
REF
+
Clock
+
−
C
2 V
Comparator
FF
Soft Start
http://onsemi.com
Clock
10 pF
2
I
1
One Shot
One Shot
(250 ns)
2
Pulse
FF Ramp
(Adjustable)
Pulse
STOP
Oscillator Ramp
R
S
Dominant)
(Reset
Output
Latch
S
R
Monotonic
Dominant)
(Reset
Latch
+
Start
−
2 V
Q
+
−
2 V
Q
Disable_ss
Delay
Logic
+ −
V
5.0 V Reference
Disable_V
DC(inv)
+
+
−
Comparator
V
−
Max DC
DIS
AUX
Comparator
V
2 V
20 kW
AUX
PWM
40 kW
32 kW
27 kW
REF
DIS
V
AUX
2 kW
DIS
10
V
12
t
15
13
11
D
V
8
REF
REF
V
OUT2
R
OUT1
DC
EA
R
D
R
MDP
P
MAX