LM26400Y_15 datasheet(3/33 Pages) TI

Teilenummer	LM26400Y

Bauteilbeschribung	LM26400Y Dual 2-A, 500-kHz Wide Input Range Buck Regulator

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Hersteller	TI [Texas Instruments]

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LM26400Y

www.ti.com

SNVS457D – FEBRUARY 2007 – REVISED OCTOBER 2015

5 Pin Configuration and Functions

PWP Package

NHQ Package

16-Pin HTSSOP With PowerPAD IC Package

16-Pin WSON

Top View

Pin Functions

TYPE

DESCRIPTION

NAME

NO.

Input supply for generating the internal bias used by the entire IC and for generating the

AVIN

4

PWR

internal bootstrap bias. Needs to be locally bypassed.

Supply rail for the gate drive of Channel 1's NMOS switch. A bootstrap capacitor should be

BST1

16

O

placed between the BST1 and SW1 pins.

Supply rail for the gate drive of Channel 2's NMOS switch. A bootstrap capacitor should be

BST2

9

O

placed between the BST2 and SW2 pins.

Enable control input for Channel 1. Logic high enables operation. Do not allow this pin to

EN1

3

I

float or be greater than VIN + 0.3 V.

Enable control input for Channel 2. Logic high enables operation. Do not allow this pin to

EN2

6

I

float or be greater than VIN + 0.3 V.

Feedback pin of Channel 1. Connect FB1 to an external voltage divider to set the output

FB1

1

I

voltage of Channel 1.

Feedback pin of Channel 2. Connect FB2 to an external voltage divider to set the output

FB2

8

I

voltage of Channel 2.

Signal and Power ground pin. Kelvin connect the lower resistor of the feedback voltage

GND

5

PWR

divider to this pin for good load regulation.

Input voltage of the power supply. Directly connected to the drain of the internal NMOS

PVIN

11, 12, 13,14

PWR

switch. Tie these pins together and connect to a local bypass capacitor.

Soft start pin of Channel 1. Connect a capacitor between this pin and ground to program the

SS1

2

I

start up speed.

Soft start pin of Channel 2. Connect a capacitor between this pin and ground to program the

SS2

7

I

start up speed.

SW2

10

O

Switch node of Channel 2. Connects to the inductor, catch diode, and bootstrap capacitor.

SW1

15

O

Switch node of Channel 1. Connects to the inductor, catch diode, and bootstrap capacitor.

Die Attach

Must be connected to system ground for low thermal impedance and low grounding

DAP

—

Pad

inductance.

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Ähnliche Beschreibung - LM26400Y_15

Hersteller	Teilenummer	Datenblatt	Bauteilbeschribung
National Semiconductor ...	LM26400Y_0708	2Mb / 24P	Dual 2A, 500kHz Wide Input Range Buck Regulator
Texas Instruments	LM26400Y	6Mb / 32P	[Old version datasheet] Dual 2A, 500kHz Wide Input Range Buck Regulator
Sipex Corporation	SP7653	207Kb / 12P	Wide Input Voltage Range, 1.3MHz,Buck Regulator
Sipex Corporation	SP7653	795Kb / 15P	Wide Input Voltage Range, 1.3MHz, Buck Regulator
Texas Instruments	LM5140-Q1	2Mb / 48P	[Old version datasheet] Wide Input Range Dual Synchronous Buck Controller
Texas Instruments	LM5119	1Mb / 39P	[Old version datasheet] Wide Input Range Dual Synchronous Buck Controller
National Semiconductor ...	LM5119	707Kb / 24P	Wide Input Range Dual Synchronous Buck Controller
Texas Instruments	LM25119	1Mb / 39P	[Old version datasheet] Wide Input Range, Dual Synchronous Buck Controller
Sipex Corporation	SP7651	117Kb / 12P	Wide Input Voltage Range 3A, 900kHz, Buck Regulator
Sipex Corporation	SP7655	121Kb / 12P	Wide Input Voltage Range 8A, 300kHz, Buck Regulator

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