ML4877
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
) ............................................... 75mA
Output Current, Source or Sink ............................. 250mA
Voltage on Pins LEA+, AZR, SS CAP, R
T
, VREF,
L ILIM, LEA-, LEA OUT, C
T
, B SYNC OUT, VDD,
L GATE 1, ON/OFF, L GATE 2, PGND, GND,
B ON, B OFF ............................... –0.3V to VDD +0.3V
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 (q
JA
) .................................... 100ºC/W
OPERATING CONDITIONS
Temperature Range
ML4877C ................................................... 0ºC to 70ºC
ML4877E...............................................–20ºC to 70ºC
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, VDD = 5V ±5%, T
A
= Operating Temperature Range, C
T
= 47pF, R
T
= 82kW (Note 1)
SYMBOL
CURRENT REGULATOR
ERROR AMPLIFIER
Open Loop Gain
Output High
Output Low
Bandwidth (-3dB)
Common Mode Voltage Range
Input Bias Current
Input Offset Voltage
Soft Start Charge Current
Soft Start Threshold (LEA OUT)
CURRENT LIMIT COMPARATOR
Current Threshold
Input Bias Current
Propagation Delay
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
Pulse Width
100
150
200
ns
VDD 5V, I
LOAD
= 12mA
I
LOAD
12mA
C
LOAD
=100pF
VDD 5V, I
LOAD
= 12mA
I
LOAD
50mA
C
LOAD
= 2400pF (Note 2)
4.625
4.625
4.8
0.2
20
4.8
0.2
45
0.375
80
0.375
50
V
V
ns
V
V
ns
V
ILIM
= 0.1V
(Note 2)
450
500
50
150
550
100
250
mV
nA
ns
V
SSCAP
= 1V
V
SSCAP
= 1V
-5
550
2
0
50
0
750
I
LOAD
= 5µA
I
LOAD
= 25µA
2.8
60
3.0
0.4
1
1.0
100
5
950
2.5
0.7
70
dB
V
V
MHz
V
nA
mv
nA
V
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
3
MICRO-LINEAR [ MICRO LINEAR CORPORATION ]
