參數(shù)資料
型號(hào)： ML4833
廠商： Fairchild Semiconductor Corporation
英文描述： Electronic Dimming Ballast Controller(電子調(diào)光整流器控制器)
中文描述： 電子調(diào)光鎮(zhèn)流器控制器（電子調(diào)光整流器控制器）
文件頁(yè)數(shù)： 3/13頁(yè)
文件大小： 136K
代理商： ML4833
ML4833
REV. 1.0 10/12/2000
3
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, R
SET
= 22.1ky, R
T
= 15.8k
, C
T
= 1.5nF, C
VCC
= 1μF, V
CC
= 12.5V. (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Lamp Current Amplifier (LAMP FB, LFB OUT)
Input Bias Current
–0.3
–1.0
μA
Small Signal Transconductance
35
65
105
μ
W
Input Voltage Range
–0.3
5.0
V
Output Low
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
0.2
0.4
V
Output High
7.1
7.5
7.8
V
Source Current
–0.05
–0.15
–0.25
mA
Sink Current
0.05
0.12
0.22
mA
PFC Voltage Feedback Amplifier (PEAO, PVFB/OVP)
Input Bias Current
–0.3
–1.0
μA
Small Signal Transconductance
35
65
105
μ
W
Input Voltage Range
–0.3
5.0
V
Output Low
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
0.2
0.4
V
Output High
6.5
6.8
7.1
V
Source Current
–0.05
–0.15
–0.25
mA
Sink Current
0.03
0.07
0.16
mA
PFC Current — Limit Comparator (PIFB)
Current-Limit Threshold
–0.90
–1.05
–1.15
V
Propagation Delay
100mV step and 100mV overdrive
100
ns
Oscillator
Initial Accuracy
T
A
= 25°C
V
CCZ
– 4.5V < V
CC
<V
CCZ
– 0.5V
72
76
80
kHz
Voltage Stability
1
%
Temperature Stability
2
%
Total Variation
Line, temperature
69
83
kHz
Ramp Valley to Peak
2.5
V
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 (
θ
JA
)
ML4833CP ......................................................70°C/W
ML4833CS ....................................................100°C/W
OPERATING CONDITIONS
Temperature Range........................................0°C to 85°C
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