ML4877 查看數據表（PDF） - Micro Linear Corporation
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ML4877 Datasheet PDF : 11 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) ............................................... 75mA
Output Current, Source or Sink ............................. 250mA
Voltage on Pins LEA+, AZR, SS CAP, RT, VREF,
L ILIM, LEA-, LEA OUT, CT, B SYNC OUT, VDD,
L GATE 1, ON/OFF, L GATE 2, PGND, GND,
B ON, B OFF ............................... –0.3V to VDD +0.3V
ML4877
Voltage on HVIDD .................................................... 20V
Current into L RTD ............................................... ±10mA
Junction Temperature .............................................. 150ºC
Storage Temperature Range ....................... -65ºC to 150ºC
Lead Temperature (Soldering 10 sec.) ..................... 260ºC
Thermal Resistance (qJA) .................................... 100ºC/W
OPERATING CONDITIONS
Temperature Range
ML4877C ................................................... 0ºC to 70ºC
ML4877E...............................................–20ºC to 70ºC
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, VDD = 5V ±5%, TA= Operating Temperature Range, CT = 47pF, RT = 82kW (Note 1)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
CURRENT REGULATOR
ERROR AMPLIFIER
Open Loop Gain
60
70
Output High
Output Low
Bandwidth (-3dB)
ILOAD = 5µA
ILOAD = 25µA
2.8
3.0
0.4
0.7
1
Common Mode Voltage Range
0
1.0
Input Bias Current
50
100
Input Offset Voltage
-5
0
5
Soft Start Charge Current
Soft Start Threshold (LEA OUT)
CURRENT LIMIT COMPARATOR
VSSCAP = 1V
VSSCAP = 1V
550
750
950
2
2.5
Current Threshold
450
500
550
Input Bias Current
Propagation Delay
VILIM = 0.1V
(Note 2)
50
100
150
250
OUTPUT DRIVERS
Output High - B SYNC OUT, B OFF
Output Low - B SYNC OUT, B OFF
Rise & Fall time - B SYNC OUT, B OFF
Output High - B ON
Output Low - B ON
Fall Time - B ON
ONE SHOT
VDD 5V, ILOAD = 12mA
ILOAD 12mA
CLOAD =100pF
VDD 5V, ILOAD = 12mA
ILOAD 50mA
CLOAD = 2400pF (Note 2)
4.625
4.8
0.2
0.375
20
50
4.625
4.8
0.2
0.375
45
80
Pulse Width
100
150
200
UNITS
dB
V
V
MHz
V
nA
mv
nA
V
mV
nA
ns
V
V
ns
V
V
ns
ns
3
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