DC1326A datasheet, PDF - EEWORLD Datasheet

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DC1326A: Descriptionboard eval for ltc3100eud; CategoryDevelopment board/suite/development tools; File Size382KB，5 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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1.5MHZ SYNCHRONOUS BOOST / SYNCHRONOUS BUCK CONVERTERS AND LDO

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 1326A

LTC3100

DESCRIPTION

Demonstration circuit 1326A consists of three

voltage regulators; a synchronous boost, a syn-

chronous buck and a linear LDO. The high effi-

ciency DC/DC converters feature 700mA

switches for the boost, 250mA for the buck and

a 100mA rating for the LDO regulator.

With a light load, the boost converter can

startup with an input voltage as low as 700mV

and once started, the input can go as low as

500mV while maintaining a regulated output.

Buck converter requires 1.8V minimum input.

Separate input terminals are provided for each

switch mode converter, and a jumper for paral-

leling the two converter inputs or powering the

buck from the output of the boost. The LDO

regulator is always powered from the boost

output.

Jumpers are included for separately shutting

down the boost regulator or shutting down or

sequencing the buck and LDO regulators.

Table 1. Typical Specifications (25°

Conditions

Boost Converter Input Voltage Range V

Boost Converter, 1.8V V

OUT

Boost Converter, 3.3V V

OUT

Boost Converter, 5V V

OUT

Boost Output Voltage Ripple (burst mode)

Boost Output Voltage Ripple (PWM)

Buck Converter, 1.2V V

OUT

Buck Converter, 1.5V V

OUT

Buck Converter, 1.8V V

OUT

Buck Output Voltage Ripple (burst mode)

Buck Output Voltage Ripple (PWM)

LDO Regulator, 1.5V V

OUT

LDO Regulator, 2.85V V

OUT

LDO Regulator, 3V V

OUT

= 1.2V, I

OUT

= 100mA

= 1.2V, I

OUT

= 100mA

= 1.2V, I

OUT

= 100mA

= 1.5V, V

OUT

= 3.3V, I

OUT

= 10mA

= 1.5V, V

OUT

= 5V, I

OUT

= 100mA

= 2V, I

OUT

= 100mA

= 2V, I

OUT

= 100mA

= 2V, I

OUT

= 100mA

= 2V, V

OUT

= 1.5V, I

OUT

= 10mA

= 2V, V

OUT

= 1.5V, I

OUT

= 100mA

= 3.3V from V

OUT

Boost, I

OUT

= 50mA

= 3.3V from V

OUT

Boost, I

OUT

= 50mA

= 3.3V from V

OUT

Boost, I

OUT

= 50mA

Limits

0.68V to 5.5V

1.8V ± 3%

3.3V ± 3%

5.0V ± 3%

25mV p-p

10mV p-p

1.2V ± 3%

1.5V ± 3%

1.8V ± 3%

10mV p-p

5mV p-p

1.5V ± 3%

2.85V ± 3%

3.0V ± 3%

Jumpers are also provided for selecting a total

of nine output voltages and selecting BURST or

PWM operation. The 16-pin 3X3 mm QFN

thermally enhanced package combined with the

high switching frequency provides a very tiny

multi output solution. The LTC3100 boost con-

verter also features output disconnect and the

input voltage can be greater or less than the

output voltage. Power Good terminals for the

boost and buck converters are also included.

This demonstration circuit allows the user to

quickly evaluate the LTC3100 performance.

Jumpers make selecting different output volt-

ages simple while terminals on the board allow

easy hookup to input supplies and output loads.

Design files for this circuit board are available.

Call the LTC factory.

LTC and Burst Mode are trademarks of Linear Technol-

ogy Corporation

DC1326A Related Products

	DC1326A	LTC3100EUD#TRPBF	LTC3100EUD#PBF
Description	board eval for ltc3100eud	IC REG BUCK/BOOST/LINEAR 16-QFN	IC REG BUCK/BOOST/LINEAR 16-QFN
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, LCC16,.12SQ,20	HVQCCN, LCC16,.12SQ,20
Contacts	-	16	16
Manufacturer packaging code	-	UD	UD
Reach Compliance Code	-	compliant	compliant
ECCN code	-	EAR99	EAR99
Other features	-	IT ALSO OPRATES IN CURRENT MODE	IT ALSO OPRATES IN CURRENT MODE
Analog Integrated Circuits - Other Types	-	DUAL SWITCHING CONTROLLER	DUAL SWITCHING CONTROLLER
control mode	-	VOLTAGE-MODE	VOLTAGE-MODE
Control Technology	-	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION
Maximum input voltage	-	5 V	5 V
Minimum input voltage	-	0.5 V	0.5 V
Nominal input voltage	-	1.2 V	1.2 V
JESD-30 code	-	S-PQCC-N16	S-PQCC-N16
JESD-609 code	-	e3	e3
length	-	3 mm	3 mm
Humidity sensitivity level	-	1	1
Number of functions	-	1	1
Number of terminals	-	16	16
Maximum operating temperature	-	85 °C	85 °C
Maximum output current	-	0.85 A	0.85 A
Package body material	-	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	-	HVQCCN	HVQCCN
Encapsulate equivalent code	-	LCC16,.12SQ,20	LCC16,.12SQ,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	-	BOOST	BOOST
Maximum switching frequency	-	1800 kHz	1800 kHz
technology	-	CMOS	CMOS
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	-	3 mm	3 mm

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