ML4877

3

ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

CURRENT REGULATOR

ERROR AMPLIFIER

Open Loop Gain

60

70

dB

Output High

2.8

3.0

V

Output Low

0.4

0.7

V

Bandwidth (-3dB)

1

MHz

Common Mode Voltage Range

0

1.0

V

Input Bias Current

50

100

nA

Input Offset Voltage

-5

0

5

mv

Soft Start Charge Current

550

750

950

nA

Soft Start Threshold (LEA OUT)

2

2.5

V

CURRENT LIMIT COMPARATOR

Current Threshold

450

500

550

mV

Input Bias Current

50

100

nA

Propagation Delay

(Note 2)

150

250

ns

OUTPUT DRIVERS

Output High - B SYNC OUT, B OFF

4.625

4.8

V

Output Low - B SYNC OUT, B OFF

0.2

0.375

V

Rise & Fall time - B SYNC OUT, B OFF

20

50

ns

Output High - B ON

4.625

4.8

V

Output Low - B ON

0.2

0.375

V

Fall Time - B ON

45

80

ns

ONE SHOT

Pulse Width

100

150

200

ns

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.

Output Current, Source or Sink ............................. 250mA

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 (

OPERATING CONDITIONS

Temperature Range

ML4877C ................................................... 0ºC to 70ºC

ML4877E...............................................–20ºC to 70ºC