ML4810, ML4811

7

4.70

2.20

1.00

0.47

0.22

0.10

0.047

CT (nF)

0.47

2.2

100

22

1.0

4.7

47

10.0

ERROR AMPLIFIER

The ML4811 error amplifier is a 5.5MHz bandwidth

12V/

µsec slew rate op-amp with provision for limiting the

positive output voltage swing (Output Inhibit line) for ease

in implementing the soft start function.

Figure 11. Open Loop Frequency Response

FREQUENCY (Hz)

100

10k

10M

1k

100k

100M

1M

100

80

60

40

20

0

–20

0

–90

–180

0

AV

0

OUT A

OUT B

POWER

GND

13

11

14

12

Q2

Q1

Figure 12. Simplified Schematic

5

4

3

2

1

TIME (

µs)

0

0.2

0.6

1.0

0.8

0.4

Figure 10. Unity Gain Slew Rate

OUTPUT DRIVER STAGE

The ML4811 Output Driver is a 2A peak output high

speed totem pole circuit designed to quickly switch the

gates of capacitive loads, such as power MOSFET

transistors.