ML4833
ABSOLUTE MAXIMUM RATINGS
Absolute maximum ratings are those values beyond which
the device could be permanently damaged. Absolute
maximum ratings are stress ratings only and functional
device operation is not implied.
Supply Current (I
CC
) ............................................... 60mA
Output Current, Source or Sink
(OUT A, OUT B, PFC OUT) DC ......................... 250mA
Output Energy (capacitive load per cycle).............. 1.5 mJ
Analog Inputs
(LAMP FB, INTERRUPT, VCC) ........... –0.3V to V
CC
–2V
PIFB input voltage ......................................... –1.5V to 2V
Maximum Forced Voltage
(PEAO, LFB OUT) ................................... –0.3V to 7.7V
Maximum Forced Current (PEAO, LFB OUT) ........ ±20mA
Junction Temperature ............................................ 150°C
Storage Temperature Range ..................... –65°C to 150°C
Lead Temperature (Soldering 10 sec.) .................... 260°C
Thermal Resistance (q
JA
)
ML4833CP ...................................................... 70°C/W
ML4833CS .................................................... 100°C/W
OPERATING CONDITIONS
Temperature Range ........................................ 0°C to 85°C
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, R
SET
= 22.1k�½, R
T
= 15.8kW, C
T
= 1.5nF, C
VCC
= 1µF, V
CC
= 12.5V. (Note 1)
PARAMETER
Lamp Current Amplifier (LAMP FB, LFB OUT)
Input Bias Current
Small Signal Transconductance
Input Voltage Range
Output Low
Output High
Source Current
Sink Current
Voltage at LAMP FB = 3V, R
L
=
Voltage at LAMP FB = 2V, R
L
=
Voltage at LAMP FB = 0V,
LFB OUT = 7V, T
A
= 25°C
Voltage at LAMP FB = 5V,
LFB OUT = 0.3V, T
A
= 25°C
7.1
–0.05
0.05
35
–0.3
0.2
7.5
–0.15
0.12
–0.3
65
–1.0
105
5.0
0.4
7.8
–0.25
0.22
µA
µW
V
V
V
mA
mA
W
CONDITIONS
MIN
TYP
MAX
UNITS
PFC Voltage Feedback Amplifier (PEAO, PVFB/OVP)
Input Bias Current
Small Signal Transconductance
Input Voltage Range
Output Low
Output High
Source Current
Sink Current
PFC Current — Limit Comparator (PIFB)
Current-Limit Threshold
Propagation Delay
Oscillator
Initial Accuracy
Voltage Stability
Temperature Stability
Total Variation
Ramp Valley to Peak
Line, temperature
69
2.5
T
A
= 25°C
V
CCZ
– 4.5V < V
CC
<V
CCZ
– 0.5V
72
76
1
2
83
80
kHz
%
%
kHz
V
100mV step and 100mV overdrive
–0.90
–1.05
100
–1.15
V
ns
Voltage at PVFB = 3V, R
L
=
Voltage at PVFB = 2V, R
L
=
Voltage at PVFB/OVP = 0V,
PEAO = 6V, T
A
= 25°C
Voltage at PVFB/OVP = 3V,
PEAO = 0.3V, T
A
= 25°C
6.5
–0.05
0.03
35
–0.3
0.2
6.8
–0.15
0.07
–0.3
65
–1.0
105
5.0
0.4
7.1
–0.25
0.16
µA
µW
V
V
V
mA
mA
W
3
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
