ML4812 查看數據表（PDF） - Fairchild Semiconductor
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ML4812 Datasheet PDF : 16 Pages
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ML4812
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) ............................................... 30mA
Output Current Source or Sink (OUT) DC ................ 1.0A
Output Energy (capacitive load per cycle) .................. 5µJ
Gain Modulator ISINE Input (ISINE) ......................... 1.2mA
Error Amp Sink Current (EA OUT) .......................... 10mA
Oscillator Charge Current ........................................ 2mA
Analog Inputs (ISENSE, EA–, OVP) ............... –0.3V to 5.5V
Junction Temperature ............................................. 150°C
Storage Temperature Range ..................... –65°C to 150°C
Lead Temperature (soldering 10 sec.) ..................... 260°C
Thermal Resistance (θJA)
20-Pin PLCC .................................................... 60°C/W
16-Pin PDIP .................................................... 65°C/W
OPERATING CONDITIONS
Temperature Range
ML4812CX ................................................ 0°C to 70°C
ML4812IX ............................................. –40°C to 85°C
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, VCC = 15V , RT = 14kΩ, CT = 1000pF, TA = Operating Temperature Range (Notes 1, 2).
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
OSCILLATOR
Initial Accuracy
Voltage Stability
Temperature Stability
TJ = 25°C
12V < VCC < 18V
91
98
105
kHz
0.3
%
2
%
Total Variation
Line, temperature
90
108
kHz
Ramp Valley to Peak
3.3
V
RT Voltage
Discharge Current (RT open)
Clock Out Voltage Low
Clock Out Voltage High
REFERENCE
TJ = 25°C, VCT= 2V
VCT = 2V
RL = 16kΩ
RL = 16kΩ
4.8
5.0
5.2
V
7.8
8.4
9.0
mA
7.3
8.4
9.3
mA
0.2
0.5
V
3.0
3.5
V
Output Voltage
Line Regulation
Load Regulation
Temperature Stability
TJ = 25°C, IO = 1mA
12V < VCC < 25V
1mA < IO < 20mA
4.95
5.00
5.05
V
2
20
mV
2
20
mV
0.4
%
Total Variation
Line, load, temp.
4.9
5.1
V
Output Noise Voltage
10Hz to 10kHz
50
µV
Long Term Stability
Short Circuit Current
ERROR AMPLIFIER
TJ = 125°C, 1000 hours
VREF = 0V
5
25
mV
–30
–85
–180
mA
Input Offset Voltage
±15
mV
Input Bias Current
–0.1
–1.0
µA
Open Loop Gain
PSRR
Output Sink Current
Output Source Current
Output High Voltage
Output Low Voltage
Unity Gain Bandwidth
1 < VEA OUT < 5V
12V < VCC < 25V
VEA OUT = 1.1V, VEA– = 6.2V
VEA OUT = 5.0V, VEA– = 4.8V
IEA OUT = –0.5mA, VEA– = 4.8V
IEA OUT = 1mA, VEA– = 6.2V
60
75
dB
60
75
dB
2
12
mA
–0.5
–1.0
mA
5.3
5.5
V
0.5
1.0
V
1.0
MHz
REV. 1.0 10/10/2000
3
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