NCP1031 ON, NCP1031 Datasheet - Page 6

• Manufacturer Part Number: NCP1031
• Description: Low Power PWM Controller with On-Chip Power Switch and Startup Circuits for 48V Telecom Systems
• Manufacturer: ON

2. Production testing for NCP1030DMR2 is performed at 25 C only; limits at −40 C and 125 C are guaranteed by design.
3. Oscillator frequency can be externally synchronized to the maximum frequency of the device.
4. Guaranteed by design only.
DC ELECTRICAL CHARACTERISTICS
V
OSCILLATOR
PWM COMPARATOR
POWER SWITCH CIRCUIT
CURRENT LIMIT AND OVER TEMPERATURE PROTECTION
TOTAL DEVICE
Frequency (C
Frequency (C
Charge Current (V
Discharge Current (V
Oscillator Ramp
Maximum Duty Cycle
Power Switch Circuit On−State Resistance (I
NCP1030
NCP1031
Power Switch Circuit and Startup Circuit Breakdown Voltage
Power Switch Circuit and Startup Circuit Off−State Leakage Current
(V
Switching Characteristics (V
Current Limit Threshold (T
Propagation Delay, Current Limit Threshold to Power Switch Circuit Output
Thermal Protection (Note 4)
Supply Current After UV Turn−On
COMP
DRAIN
= 2.5 V, T
= 200 V, V
T
T
Peak
Valley
T
T
T
T
(I
T
T
Rise Time
Fall Time
NCP1030 (di/dt = 0.5 A/ms)
NCP1031 (di/dt = 1.0 A/ms)
(Leading Edge Blanking plus Current Limit Delay)
Shutdown Threshold (T
Hysteresis
Power Switch Enabled
Power Switch Disabled
J
J
J
J
J
J
D
J
J
= 25 C
= −40 C to 125 C
= 25 C
= 125 C
= 25 C
= 125 C
= 25 C
= −40 to 125 C
T
T
= 100 mA, T
= 560 pF, Note 3)
= 100 pF)
J
CT
= −40 C to 125 C, typical values shown are for T
UV
Non−Fault condition (V
Fault Condition (V
CT
= 3.25 V)
= 2.0 V)
= 3.25 V)
J
J
= 25 C)
= 25 C)
DS
Characteristics
= 48 V, R
J
Increasing)
FB
L
= 2.7 V, V
= 100 W)
FB
D
(V
= 2.7 V)
= 100 mA)
DRAIN
UV
NCP1030, NCP1031
= 2.0 V)
= 48 V, V
http://onsemi.com
CC
= 12 V, C
J
6
= 25 C unless otherwise noted.) (Note 2)
T
= 560 pF, V
Symbol
V
DC
R
T
I
f
f
I
I
DS(off)
T
Vrpk
(BR)DS
OSC1
OSC2
CT(C)
CT(D)
V
DS(on)
t
I
I
I
SHDN
I
PLH
CC1
CC2
CC3
LIM
HYS
rvly
t
t
MAX
r
f
UV
= 3 V, V
Min
275
260
200
350
700
125
2.0
70
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
OV
= 2 V, V
1050
0.65
Typ
300
800
215
645
515
100
150
3.5
3.0
4.1
6.0
2.1
3.5
3.0
1.5
75
13
22
24
45
−
−
−
FB
= 2.3 V,
1360
Max
325
325
680
7.0
3.0
6.0
4.0
2.0
1.2
80
12
25
50
−
−
−
−
−
−
−
−
−
−
−
Unit
kHz
kHz
mA
mA
mA
mA
mA
ns
ns
%
W
V
V
C