NCP1653, NCP1653A
www.onsemi.com
4
ELECTRICAL CHARACTERISTICS (For typical values T
J
= 25°C. For min/max values, T
J
= −40°C to +125°C, V
CC
= 15 V,
I
FB
= 100 mA, I
vac
= 30 mA, I
S
= 0 mA, unless otherwise specified)
Characteristics Pin Symbol Min Typ Max Unit
OSCILLATOR
Switching Frequency NCP1653
NCP1653A
7 f
SW
90
60.3
102
67
110
73.7
kHz
Maximum Duty Cycle (V
M
= 0 V) (Note 3) 7 D
max
94 − − %
GATE DRIVE
Gate Drive Resistor
Output High and Draw 100 mA out of Drv pin (I
source
= 100 mA)
Output Low and Insert 100 mA into Drv pin (I
sink
= 100 mA)
7
R
OH
R
OL
5.0
2.0
9.0
6.6
20
18
W
W
Gate Drive Rise Time from 1.5 V to 13.5 V (Drv = 2.2 nF to Gnd) 7 t
r
− 88 − ns
Gate Drive Fall Time from 13.5 V to 1.5 V (Drv = 2.2 nF to Gnd) 7 t
f
− 61.5 − ns
FEEDBACK / OVERVOLTAGE PROTECTION / UNDERVOLTAGE PROTECTION
Reference Current (V
M
= 3 V) 1 I
ref
192 204 208 mA
Regulation Block Ratio 1 I
regL
/I
ref
95 96 98 %
Vcontrol Pin Internal Resistor 2 R
control
− 300 − kW
Maximum Control Voltage (I
FB
= 100 mA) 2 V
control(max)
− 2.4 − V
Maximum Control Current (I
control(max)
= I
ref
/ 2) 2 I
control(max)
− 100 − mA
Feedback Pin Voltage (I
FB
= 100 mA)
Feedback Pin Voltage (I
FB
= 200 mA)
1 V
FB1
1.0
1.3
1.5
1.8
1.9
2.2
V
V
Overvoltage Protection
OVP Ratio
Current Threshold
Propagation Delay
1
I
OVP
/I
ref
I
OVP
t
OVP
104
−
−
107
214
500
−
230
−
%
mA
ns
Undervoltage Protection (V
M
= 3 V)
UVP Activate Threshold Ratio
UVP Deactivate Threshold Ratio
UVP Lockout Hysteresis
Propagation Delay
1
I
UVP(on)
/I
ref
I
UVP(off)
/I
ref
I
UVP(H)
t
UVP
4.0
7.0
4.0
−
8.0
12
8.0
500
15
20
−
−
%
%
mA
ns
CURRENT SENSE
Current Sense Pin Offset Voltage (I
S
= 100 mA) 4 V
S
0 10 30 mV
Overcurrent Protection Threshold (V
M
= 1 V) 4 I
S(OCP)
185 200 215 mA
OVERPOWER LIMITATION
Input Voltage Sense Pin Internal Resistor 4 R
vac(int)
− 12 − kW
Over Power Limitation Threshold 3−4 I
S
× I
vac
− 3.0 − nA
2
Sense Current Threshold (I
vac
= 30 mA, V
M
= 3 V)
Sense Current Threshold (I
vac
= 100 mA, V
M
= 3 V)
4 I
S(OPL1)
I
S(OPL2)
80
24
100
32
140
48
mA
mA
CURRENT MODULATION
PWM Comparator Reference Voltage 5 V
ref
2.25 2.62 2.75 V
Multiplier Current (V
control
= V
control(max)
, I
vac
= 30 mA, I
S
= 25 mA)
Multiplier Current (V
control
= V
control(max)
, I
vac
= 30 mA, I
S
= 75 mA)
Multiplier Current (V
control
= V
control(max)
/ 10, I
vac
= 30 mA, I
S
= 25 mA)
Multiplier Current (V
control
= V
control(max)
/ 10, I
vac
= 30 mA, I
S
= 75 mA)
5 I
M1
I
M2
I
M3
I
M4
1.0
3.2
10
30
2.85
9.5
35
103.5
5.8
18
58
180
mA
mA
mA
mA
THERMAL SHUTDOWN
Thermal Shutdown Threshold (Note 4) − T
SD
150 − − °C
Thermal Shutdown Hysteresis − − − 30 − °C
4. Guaranteed by design.
