DC927A datasheet, PDF - EEWORLD Datasheet

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DC927A: Descriptionboard eval for lt3742efe; CategoryDevelopment board/suite/development tools; File Size199KB，4 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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board eval for lt3742efe

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DEMO CIRCUIT 927

LT3742

QUICK START GUIDE

LT3742

Dual, 2-Phase Step-Down

Switching Controller

DESCRIPTION

Demonstration circuit 927 is a high

density 5V/4A and 3.3V/4A step down

converter featuring the LT3742. A

500kHz fixed frequency current mode

architecture provides fast transient

response with simple loop compensa-

tion components and cycle-by-cycle

current limiting. An internal step-up

regulator is used to generate the

gate drive voltage, allowing the gate

of the external high side N-channel

MOSFET to be driven to full enhance-

ment for the highly efficient opera-

tion. The dual channels operate 180

out of phase to reduce the input rip-

ple current, minimizing the noise in-

duced on the input supply, and allow-

Table1. Performance Summary ( TA = 25oC )

PARAMETER

Minimum Input Voltage

Maximum Input Voltage

Output Voltage V

OUT1

Output Voltage V

OUT2

Maximum Output Current I

OUT1

Maximum Output Current I

OUT2

Typical Switching Frequency

ing the use of less input capaci-

tance. The device also includes indi-

vidual shutdown and power-good output

for each converter. The LT3742 is

available in a small 4mm x 4mm QFN

package.

The LT3742 datasheet gives a complete

description of the part, operation

and

application

information.

The

datasheet must be read in conjunction

with this quick start guide for demo

circuit 927.

Design files for this circuit board

are available. Call the LTC factory.

, LTC and LT are registered trademarks of Linear Technol-

ogy Corporation. ThinSOT and PowerPath are trademarks of Lin-

ear Technology Corporation.

CONDITION

VALUE

5.5V

28V (Note 1)

5V +/-3%

3.3V +/-3%

500kHz

Note 1: See “Input Voltage Range” section in the datasheet for detail.

DC927A Related Products

	DC927A	LT3742EUF#TRPBF	LT3742EUF#PBF
Description	board eval for lt3742efe	IC REG CTRLR BUCK 24QFN	IC REG CTRLR BUCK 24QFN
Brand Name	-	Linear Technology	Linear Technology
Is it Rohs certified?	-	conform to	conform to
Maker	-	Linear ( ADI )	Linear ( ADI )
Parts packaging code	-	QFN	QFN
package instruction	-	HVQCCN, LCC24,.16SQ,20	HVQCCN, LCC24,.16SQ,20
Contacts	-	24	24
Manufacturer packaging code	-	UF	UF
Reach Compliance Code	-	compliant	compliant
ECCN code	-	EAR99	EAR99
Other features	-	OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 30V	OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 30V
Analog Integrated Circuits - Other Types	-	DUAL SWITCHING CONTROLLER	DUAL SWITCHING CONTROLLER
control mode	-	CURRENT-MODE	CURRENT-MODE
Control Technology	-	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION
Maximum input voltage	-	30 V	30 V
Minimum input voltage	-	4 V	4 V
Nominal input voltage	-	5 V	5 V
JESD-30 code	-	S-PQCC-N24	S-PQCC-N24
JESD-609 code	-	e3	e3
length	-	4 mm	4 mm
Humidity sensitivity level	-	1	1
Number of functions	-	1	1
Number of terminals	-	24	24
Maximum operating temperature	-	125 °C	125 °C
Maximum output current	-	0.5 A	0.5 A
Package body material	-	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	-	HVQCCN	HVQCCN
Encapsulate equivalent code	-	LCC24,.16SQ,20	LCC24,.16SQ,20
Package shape	-	SQUARE	SQUARE
Package form	-	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	-	260	260
Certification status	-	Not Qualified	Not Qualified
Maximum seat height	-	0.8 mm	0.8 mm
surface mount	-	YES	YES
Switch configuration	-	PHASE-SHIFT	PHASE-SHIFT
Maximum switching frequency	-	560 kHz	560 kHz
technology	-	BIPOLAR	BIPOLAR
Temperature level	-	OTHER	OTHER
Terminal surface	-	Matte Tin (Sn)	Matte Tin (Sn)
Terminal form	-	NO LEAD	NO LEAD
Terminal pitch	-	0.5 mm	0.5 mm
Terminal location	-	QUAD	QUAD
Maximum time at peak reflow temperature	-	30	30
width	-	4 mm	4 mm

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