NCL30001
www.onsemi.com
6
ELECTRICAL CHARACTERISTICS (V
CC
= 15 V, V
AC
IN
= 3.8 V, V
FB
= 2.0 V, V
FF
= 2.4 V, V
Latch
= open, V
ISPOS
= −100 mV,
C
DRV
= 1 nF, C
T
= 470 pF, C
IAVG
= 0.27 nF, C
Latch
= 0.1 nF, C
M
= 10 nF, R
IAVG
= 76.8 kW,
R
TEST
= 50 kW, R
RC
= 43 kW, For typical Value T
J
= 25°C, for min/max values T
J
= −40°C to 125°C, unless otherwise noted)
Parameter
Test Condition Symbol Min Typ Max Unit
OSCILLATOR
Frequency
f
osc
90 100 110 kHz
Frequency Modulation in Percentage
of f
OSC
– 6.8 – %
Frequency Modulation Period – 6.8 – ms
Ramp Peak Voltage V
CT(peak)
– 4.0 – V
Ramp Valley Voltage V
CT(valley)
– 0.10 – V
Maximum Duty Ratio R
TEST
= open D 94 − – %
Ramp Compensation Peak Voltage V
RCOMP(peak)
– 4 – V
AC ERROR AMPLIFIER
Input Offset Voltage (Note 3)
Ramp I
AVG
, V
FB
= 0 V ACV
IO
40 – mV
Error Amplifier Transconductance g
m
– 100 –
mS
Source Current V
AC
COMP
= 2.0 V, V
AC
IN
= 2.0 V,
V
FF
= 1.0 V
I
EA(source)
25 70 –
mA
Sink Current V
AC
COMP
= 2.0 V, V
A
C_IN
= 2.0 V,
V
FF
= 5.0 V
I
EA(sink)
−25 −70 –
mA
CURRENT AMPLIFIER
Input Bias Current
V
ISPOS
= 0 V CAI
bias
40 53 80
mA
Input Offset Voltage V
AC
COMP
= 5.0 V, V
ISpos
= 0 V CAV
IO
−20 0 20 mV
Current Limit Threshold force DRV high, V
AC
COMP
= 3.0 V,
ramp V
ISPOS
, V
Ramp_Comp
= open
V
ILIM
0.695 0.74 0.77 V
Leading Edge Blanking Duration t
LEB
– 200 – ns
Bandwidth – 1.5 – MHz
PWM Output Voltage Gain
PWMk +
4
(V
ILIM
* C
AVIO
)
PWMk 4.0 5.3 6.0 V/V
Current Limit Voltage Gain (See
Current Sense Section)
ISVK +
V
(AVG)
VI
SPOS
ISVk 15.4 18.5 23 V/V
REFERENCE GENERATOR
Reference Generator Gain
k +
V
AC_REF
@ V
FF
2
V
FB
@ V
AC_IN
k – 0.55 – V
Reference Generator output voltage
(low input ac line and full load)
V
AC
IN
= 1.2 V, V
FF
= 0.765 V,
V
FB
= 4 V
RG
out1
3.61 4.36 4.94 Vpk
Reference Generator output voltage
(high input ac line and full load)
V
AC
IN
= 3.75 V, V
FF
= 2.39 V,
V
FB
= 4.0 V
RG
out2
1.16 1.35 1.61 Vpk
Reference Generator output Voltage
(low input as line and minimum load)
V
AC
IN
= 1.2 V, V
FF
= 0.765 V,
V
FB
= 2.0 V
RG
out3
1.85 2.18 2.58 Vpk
Reference Generator output voltage
(high input ac line and minimum load)
V
AC
IN
= 3.75 V, V
FF
= 2.39 V,
V
FB
= 2.0 V
RG
out4
0.55 0.65 0.78 Vpk
Reference Generator output offset
voltage
RG
offset
−100 – 100 mV
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
3. Guaranteed by Design
