ML4818
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.
V
CC
........................................................................... 30V
Output Driver Current, Source or Sink
DC ....................................................................... 0.5A
Pulse (0.5
µs)
........................................................ 1.5A
Analog Inputs
(C
T
, RAMP, I
LIM
, E/A OUT, INV,
SOFT START, RC
RESET
) ............................... –0.3V to 6V
CLOCK Output Current (R
T
) ....................................–5mA
Error Amplifier Output Current (E/A OUT) ................ 5mA
SOFT START Sink Current ..................................... 50 mA
Oscillator Charging Current (C
T
) .............................–5mA
Junction Temperature ............................................. 150°C
Storage Temperature Range ..................... –65°C to 150°C
Lead Temperature (Soldering 10 Sec) ...................... 260°C
Thermal Resistance (θ
JA
)
Plastic Power DIP ............................................ 40°C/W
Plastic SOIC ..................................................... 80°C/W
OPERATING CONDITIONS
Operating Temperature Range ....................... 0°C to 70°C
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, V
CC
= 15V, R
T
= 12.7kΩ, C
T
= 250pF, R
CLK
= 3kΩ, R
DELAY
= 5kΩ,
T
A
= Operating Temperature Range (Note 1).
PARAMETER
OSCILLATOR
Initial Accuracy
Voltage Stability
Temperature Stability
Total Variation
C
T
Discharge Current
Clock Out High
Clock Out Low
Ramp Peak
Ramp Valley
Ramp Valley to Peak
REFERENCE
Output Voltage
Line Regulation
Load Regulation
Temperature Stability
Total Variation
Output Noise Voltage
Long Term Stability
Short Circuit Current
ERROR AMPLIFIER
Input Offset Voltage
Input Bias Current
Input Offset Current
Open Loop Gain
PSRR
1 < V
O
< 4V
12 < V
CC
< 25V
70
65
–40
–3
0.6
0.1
75
80
30
3
1
mV
µA
µA
dB
dB
10Hz to 10kHz
T
J
= 125°C, 1000 hrs
V
REF
= 0V
–20
4.85
50
5
–50
25
T
A
= 25°C, I
O
= 1mA
12V < V
CC
< 25V
1mA < I
O
< 10mA
4.95
–20
–20
5.0
2
3
.2
5.15
5.05
20
20
V
mV
mV
mV/°C
V
mV
mV
mA
0
0
line, temp.
V
CT
= 2V
375
4.7
2.4
5.5
3.1
0
4.1
1.5
2.6
5
5
T
A
= 25°C
12V < V
CC
< 25V
410
450
–0.3
0.2
525
6.3
6
0.4
525
kHz
%/V
%
kHz
mA
V
V
V
V
V
CONDITIONS
MIN
TYP.
MAX
UNITS
3
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
