Note 2: Gain defined as A=

Note 3: These parameters, although guaranteed, are not 100% tested in production.

No

FUNCTION

DESCRIPTION

1

COMP

This pin is the Error Amplifier output and is made for loop compensation

This is the inverting input of the Error Amplifier. It is normally connected to

the switching power supply output through a resistor divider.

A voltage proportional to inductor current is connected to this input. The

PWM uses this information to terminate the output switch conduction.

The oscillator frequency and maximum Output duty cycle are programmed

5

GROUND

This pin is the combined control circuitry and power ground

6OUTPUT

This output directly drives the gate of a power MOSFET. Peak currents up to

1A are sourced and sinked by this pin.

This pin is the positive supply of the integrated circuit.

LND3842/43/44/45

PIN DESCRIPTION

TYPICAL APPLICATIONS

2.5V

1

2

+

-

Figure 1. Error Amp Configuration

1mA

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