CS51411 datasheet(2/20 Pages) ONSEMI

No. de pieza	CS51411

Descripción Electrónicos	1.5 A, 260 kHz and 520 kHz, Low Voltage Buck Regulators with External Bias or Synchronization Capability

Download	20 Pages

Scroll/Zoom	100%

Fabricante Electrónico	ONSEMI [ON Semiconductor]

Página de inicio	http://www.onsemi.com

Logo

2 / 20 page

CS51411, CS51412, CS51413, CS51414

http://onsemi.com

2

PIN CONNECTIONS

1

2

3

4

5

6

7

8

9

18

17

16

15

14

13

12

11

10

BOOST

VIN

Vsw

VSW

SHDNB

NC

VC

VFB

NC

GND

NC

SYNC

SHDNB

18

GND

VSW

VFB

VIN

VC

BOOST

SHDNB

BIAS

18

GND

VSW

VFB

VIN

VC

BOOST

CS51412/4

CS51411/3

1

2

3

4

5

6

7

8

9

18

17

16

15

14

13

12

11

10

BOOST

VIN

Vsw

VSW

BIAS

NC

VC

VFB

NC

GND

NC

SHDNB

CS51412/4

PACKAGE PIN DESCRIPTION

SOIC-8

Package Pin #

DFN18

Package Pin #

Pin Symbol

Function

1

BOOST

The BOOST pin provides additional drive voltage to the on-chip NPN

power transistor. The resulting decrease in switch on voltage increases

efficiency.

2

2, 3, 4

VIN

This pin is the main power input to the IC.

3

5, 6, 7

VSW

This is the connection to the emitter of the on-chip NPN power transistor

and serves as the switch output to the inductor. This pin may be

subjected to negative voltages during switch off-time. A catch diode is

required to clamp the pin voltage in normal operation. This node can

stand -1.0 V for less than 50 ns during switch node flyback.

4

(CS51412/CS51414)

8

BIAS

The BIAS pin connects to the on-chip power rail and allows the IC to run

most of its internal circuitry from the regulated output or another low

voltage supply to improve efficiency. The BIAS pin is left floating if this

feature is not used.

5

(CS51411/CS51413)

10

SYNC

This pin provides the synchronization input.

5

(CS51412/CS51414)

4

(CS51411/CS51413)

10

(CS51412/CS51414)

8

(CS51411/CS51413)

SHDNB

The shutdown pin is active low and TTL compatible. The IC goes into

sleep mode, drawing less than 85

mA when the pin voltage is pulled

below 1.0 V. This pin should be left floating in normal position.

6

13

GND

Power return connection for the IC.

7

16

VFB

The FB pin provides input to the inverting input of the error amplifier. If

VFB is lower than 0.29 V, the oscillator frequency is divided by four, and

current limit folds back to about 1 A. These features protect the IC under

severe overcurrent or short circuit conditions.

8

17

VC

The VC pin provides a connection point to the output of the error

amplifier and input to the PWM comparator. Driving of this pin should be

avoided because on-chip test circuitry becomes active whenever

current exceeding 0.5 mA is forced into the IC.

-

9, 11, 12, 14, 15, 18

NC

No Connection

Número de pieza similar - CS51411

Fabricante Electrónico	No. de pieza	Datasheet	Descripción Electrónicos
ON Semiconductor	CS51411	489Kb / 16P	1.5A, 260 kHz AND 520 kHz, LOW VOLTAGE BUCK REGULATORS WITH EXTERNAL BIAS OR SYNCHRONIZATION CAPABILITY September, 2002 ??Rev. 11
	CS51411	252Kb / 20P	1.5 A, 260 kHz and 520 kHz, Low Voltage Buck Regulators with External Bias or Synchronization Capability February, 2007 ??Rev. 17
	CS51411	3Mb / 4P	AC-DC Offline Switching Controllers/Regulators Rev.0, Jun-2005
	CS514113	3Mb / 4P	AC-DC Offline Switching Controllers/Regulators Rev.0, Jun-2005
	CS514114	3Mb / 4P	AC-DC Offline Switching Controllers/Regulators Rev.0, Jun-2005

More results

Descripción similar - CS51411

Fabricante Electrónico	No. de pieza	Datasheet	Descripción Electrónicos
ON Semiconductor	CS51411	252Kb / 20P	1.5 A, 260 kHz and 520 kHz, Low Voltage Buck Regulators with External Bias or Synchronization Capability February, 2007 ??Rev. 17
	CS51411	290Kb / 20P	1.5 A, 260 kHz and 520 kHz Low Voltage Buck Regulators with External Bias or Synchronization Capability November, 2012 ??Rev. 20
	CS51411	489Kb / 16P	1.5A, 260 kHz AND 520 kHz, LOW VOLTAGE BUCK REGULATORS WITH EXTERNAL BIAS OR SYNCHRONIZATION CAPABILITY September, 2002 ??Rev. 11
	NCV51411	182Kb / 16P	1.5 A, 260 kHz, Low Voltage Buck Regulator with Synchronization Capability May, 2010 ??Rev. 15
	NCV51411	224Kb / 16P	1.5 A, 260 kHz, Low Voltage Buck Regulator with Synchronization Capability May, 2010 ??Rev. 15
	NCV8842	377Kb / 16P	1.5 A, 170 kHz, Buck Regulator with Synchronization Capability July, 2011 ??Rev. 10
	NCV8842	180Kb / 15P	1.5 A, 170 kHz, Buck Regulator with Synchronization Capability October, 2006 ??Rev. 1
	NCV8843	187Kb / 15P	1.5 A, 340 kHz, Buck Regulator with Synchronization Capability October, 2006 ??Rev. 1
	NCP1546	152Kb / 13P	1.5 A, 170 kHz, Buck Regulator with Synchronization Capability March, 2007 ??Rev. 0
	NCV8843	385Kb / 16P	1.5 A, 340 kHz, Buck Regulator with Synchronization Capability May, 2010 ??Rev. 10

More results

CS51411 Datasheet(PDF) 2 Page - ON Semiconductor

CS51411 Datasheet(HTML) 2 Page - ON Semiconductor

Número de pieza similar - CS51411

Descripción similar - CS51411

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Datasheet Descarga

Enlace URL