ML4833CS Ver la hoja de datos (PDF) - Micro Linear Corporation
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ML4833CS Datasheet PDF : 13 Pages
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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 (ICC) ............................................... 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 VCC –2V
PIFB input voltage ......................................... –1.5V to 2V
ML4833
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 (qJA)
ML4833CP ...................................................... 70°C/W
ML4833CS .................................................... 100°C/W
OPERATING CONDITIONS
Temperature Range ........................................ 0°C to 85°C
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, RSET = 22.1ký, RT = 15.8kW, CT = 1.5nF, CVCC = 1µF, VCC = 12.5V. (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
Lamp Current Amplifier (LAMP FB, LFB OUT)
Input Bias Current
–0.3
–1.0
Small Signal Transconductance
35
65
105
Input Voltage Range
–0.3
5.0
Output Low
Voltage at LAMP FB = 3V, RL =
Output High
Voltage at LAMP FB = 2V, RL =
Source Current
Voltage at LAMP FB = 0V,
LFB OUT = 7V, TA = 25°C
Sink Current
Voltage at LAMP FB = 5V,
LFB OUT = 0.3V, TA = 25°C
PFC Voltage Feedback Amplifier (PEAO, PVFB/OVP)
7.1
–0.05
0.05
0.2
7.5
–0.15
0.12
0.4
7.8
–0.25
0.22
Input Bias Current
–0.3
–1.0
Small Signal Transconductance
35
65
105
Input Voltage Range
–0.3
5.0
Output Low
Output High
Voltage at PVFB = 3V, RL =
Voltage at PVFB = 2V, RL =
0.2
0.4
6.5
6.8
7.1
Source Current
Voltage at PVFB/OVP = 0V,
PEAO = 6V, TA = 25°C
–0.05
–0.15
–0.25
Sink Current
Voltage at PVFB/OVP = 3V,
PEAO = 0.3V, TA = 25°C
0.03
0.07
0.16
PFC Current — Limit Comparator (PIFB)
Current-Limit Threshold
–0.90
–1.05
–1.15
Propagation Delay
100mV step and 100mV overdrive
100
Oscillator
Initial Accuracy
TA = 25°C
72
76
80
Voltage Stability
Temperature Stability
VCCZ – 4.5V < VCC <VCCZ – 0.5V
1
2
Total Variation
Line, temperature
69
83
Ramp Valley to Peak
2.5
UNITS
µA
µW
V
V
V
mA
mA
µA
µW
V
V
V
mA
mA
V
ns
kHz
%
%
kHz
V
3
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