Connection Diagram

20197202

Top View

10-Lead MSOP

Ordering Information

Order Number

Fault Response

Package Type

NSC Package

Drawing

Supplied As

LM5069MM-1

Latch Off

MSOP-10

MUB10A

1000 Units on Tape and Reel

LM5069MMX-1

Latch Off

3500 Units on Tape and Reel

LM5069MM-2

Auto Restart

1000 Units on Tape and Reel

LM5069MMX-2

Auto Restart

3500 Units on Tape and Reel

Pin Descriptions

Pin #

Name

Description

Applications Information

1

SENSE

Current sense input

The voltage across the current sense resistor (R

this pin. If the voltage across R

the fault timer activates.

2

VIN

Positive supply input

A small ceramic bypass capacitor close to this pin is recommended to

suppress transients which occur when the load current is switched off.

3

UVLO

Under-voltage lockout

An external resistor divider from the system input voltage sets the

under-voltage turn-on threshold. An internal 21 µA current source provides

hysteresis. The enable threshold at the pin is 2.5V. This pin can also be used

for remote shutdown control.

4

OVLO

Over-voltage lockout

An external resistor divider from the system input voltage sets the over-voltage

turn-off threshold. An internal 21 µA current source provides hysteresis. The

disable threshold at the pin is 2.5V.

5

GND

Circuit ground

6

TIMER

Timing capacitor

An external capacitor connected to this pin sets the insertion time delay and

the Fault Timeout Period. The capacitor also sets the restart timing of the

LM5069-2.

7

PWR

Power limit set

An external resistor connected to this pin, in conjunction with the current sense

resistor (R

series pass MOSFET.

8

PGD

Power Good indicator

An open drain output. When the external MOSFET V

1.25V, the PGD indicator is active (high). When the external MOSFET V

DS

increases above 2.5V the PGD indicator switches low.

9

OUT

Output feedback

Connect to the output rail (external MOSFET source). Internally used to

determine the MOSFET V

indicator.

10

GATE

Gate drive output

Connect to the external MOSFET’s gate. This pin’s voltage is typically 12V

above the OUT pin when enabled.

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