ML4830 Просмотр технического описания (PDF) - Micro Linear Corporation
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ML4830 Datasheet PDF : 15 Pages
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ML4830
ELECTRICAL CHARACTERISTICS (Continued)
PARAMETER
CONDITIONS
Oscillator
Initial accuracy
TA = 25°C, PWM or
Dimming Lockout
Voltage stability
Temperature stability
VCCZ – 3V < VCC <VCCZ – 0.5V
Total Variation
Line, temperature
Ramp Valley to Peak
C(T) Charging Current (FM Modes)
VPIN8 = 0V, VPIN9 = 2.5V,
VPIN12 = 0.9V, Preheat
VPIN8 = 0V, VPIN9 = 2.5V,
Max. dimming
C(T) Discharge Current
Output Drive Deadtime
VPIN8 = 0V, VPIN9 = 2.5V
R(SET) Voltage
Reference Section
Output Voltage
Line regulation
Load regulation
Temperature stability
TA = 25°C, IO = 1mA
VCCZ – 3V < VCC , VCCZ – 0.5V
1mA < IO < 20mA
Total Variation
Line, load, temp
Output Noise Voltage
10Hz to 10KHz
Long Term Stability
TJ = 125°C, 1000 hrs
Short Circuit Current
VCC < VCCZ – 0.5V, VREF = 0V
Preheat and Interrupt Timer (Pin 10) (R(X) = 590Ký, C(X) = 5.6µF)
Initial Preheat Period
Subsequent Preheat Period
Start Period
Interrupt Period
Pin 12 Charging Current
Pin 12 Open Circuit Voltage
Pin 12 Maximum Voltage
VCC = 12.3V in UVLO
Input Bias Current
Preheat Lower Threshold
VPIN12 = 1.2V
Preheat Upper Threshold
Interrupt Recovery Threshold
Start Period End Threshold
MIN
TYP
MAX
UNITS
72
80
88
KHz
1
%
2
%
68
92
KHz
2.5
V
–94
µA
–188
µA
5
mA
0.2
µs
2.5
V
7.4
7.5
7.6
V
2
10
mV
2
15
mV
0.4
%
7.35
7.65
V
50
µV
5
mV
–40
mA
0.8
s
0.7
s
2.1
s
6.3
s
–23
µA
0.4
0.9
1.1
V
7.0
7.3
7.7
V
–0.1
µA
1.18
V
3.36
V
1.18
V
6.6
V
4
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