ML4876

3

ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

CURRENT REGULATOR

Error Amplifier

Open Loop Gain

60

70

dB

Bias Point

Closed loop

0.18

0.2

0.22

V

Output High

2.8

3.0

V

Output Low

0.4

0.7

V

Bandwidth (–3dB)

1

MHz

Input Voltage Range

–0.3

0.2

VREF

V

Input Bias Current

50

100

nA

Current Limit Comparator

Current Threshold

450

500

550

mV

Input Bias Current

50

100

nA

Propagation Delay

(Note 2)

30

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

DELAY TIMER Delay Time

20

35

55

ns

FLYBACK REGULATOR

Error Amplifier

Open Loop Gain

60

70

dB

Offset Voltage

–15

15

mV

Output High

2.8

3.0

V

Output Low

0.4

0.7

V

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

Voltage on HVDD ..................................................... 20V

Current into L RTD ............................................... ±10mA

Transient Voltage on B ON .......................................... 9V

Voltage on Any Other Pin ............... –0.3V to VDD +0.3V

Junction Temperature .............................................. 150°C

Storage Temperature Range ..................... –65°C to 150°C

Lead Temperature (Soldering 10 sec.) ..................... 260°C

OPERATING CONDITIONS

Temperature Range

ML4876C ................................................... 0°C to 70°C

ML4876E ............................................... –20°C to 70°C