Connection Diagram

20179402

Top View

16-Lead Plastic TSSOP

Ordering Information

Order Number

Package Type

Package Drawing

Package Marking

Supplied As

LM26001MXA

TSSOP-16EXP

MXA16A

LM26001EM

92 Units of Rail

LM26001MXAX

TSSOP-16EXP

MXA16A

LM26001EM

2500 Units of Tape and Reel

Pin Descriptions

Pin #

Pin Name

Description

1

VIN

Power supply input

2

VIN

Power supply input

3

PGOOD

Power Good pin. An open drain output which goes high when the output voltage is greater than

92% of nominal.

4

EN

Enable is an analog level input pin. When pulled below 0.8V, the device enters shutdown

mode.

5

SS

Soft-start pin. Connect a capacitor from this pin to GND to set the soft-start time.

6

COMP

Compensation pin. Connect to a resistor capacitor pair to compensate the control loop.

7

FB

Feedback pin. Connect to a resistor divider between Vout and GND to set output voltage.

8

GND

Ground

9

FREQ

Frequency adjust pin. Connect a resistor from this pin to GND to set the operating frequency.

10

FPWM

FPWM is a logic level input pin. For normal operation, connect to GND. When pulled high,

sleep mode operation is disabled.

11

SYNC

Frequency synchronization pin. Connect to an external clock signal for synchronized operation.

SYNC must be pulled low for non-synchronized operation.

12

VBIAS

Connect to an external 3V or greater supply to bypass the internal regulator for improved

efficiency. If not used, VBIAS should be tied to GND.

13

VDD

The output of the internal regulator. Bypass with a minimum 1.0 µF capacitor.

14

BOOT

Bootstrap capacitor pin. Connect a 0.1µF minimum ceramic capacitor from this pin to SW to

generate the gate drive bootstrap voltage.

15

SW

Switch pin. The source of the internal N-channel switch.

16

SW

Switch pin. The source of the internal N-channel switch.

EP

EP

Exposed Pad thermal connection. Connect to GND.

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