Connection Diagrams

14-Pin TSSOP

20065104

Top View

Ordering Information

Order Number

Package Type

NSC Package

Drawing

Supplied As

LM2619MTC

TSSOP - 14

MTC14

94 Rail

LM2619MTCX

MTC14

2500 Tape and Reel

Pin Description

Pin Number

Pin Name

Function

1

EN

Enable Input. Set this Schmitt trigger digital input high for normal operation. For shutdown,

set low. Set EN low during system power-up and other low supply voltage conditions.

(See Shutdown Mode in the Device Information section.)

2

SYNC/MODE

Synchronization Input. Use this digital input for frequency selection or modulation control.

Set:

SYNC/MODE = high for low-noise 600kHz PWM mode

SYNC/MODE = low for low-current PFM mode

SYNC/MODE = a 500kHz–1MHz external clock for synchronization in PWM mode. (See

Synchronization and Operating Modes in the Device Information section.)

3

EAOUT

Output of error amplifier.

4

EANEG

Inverting Input of Error Amplifier.

5

FB

Feedback Analog Input.

6

SGND

Analog and Control Ground.

7,8

VDD

Analog Supply Input. If board layout is not optimum, an optional 0.1µF ceramic capacitor

is suggested from this pin to SGND.

9,10

PVIN

Power Supply Voltage Input to the internal PFET switch. Connect to the input filter

capacitor.

11,12

SW

Switching Node connection to the internal PFET switch and NFET synchronous rectifier.

Connect to an inductor with a saturation current rating that exceeds the max Switch Peak

Current Limit of the LM2619MTC.

13,14

PGND

Power Ground.

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PrintDate=2003/08/20 PrintTime=18:54:04 801627bc ds200651_p Rev. No. 1.25

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