LTC3520IUF#TRPBF datasheet, PDF

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LTC3520IUF#TRPBF: DescriptionIC REG BCK BST ADJ DL SYNC 24QFN; CategoryPower/power management The power supply circuit; File Size417KB，4 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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LTC3520IUF#TRPBF Overview

IC REG BCK BST ADJ DL SYNC 24QFN

LTC3520IUF#TRPBF Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	conform to
Maker	Linear ( ADI )
Parts packaging code	QFN
package instruction	HVQCCN, LCC24,.16SQ,20
Contacts	24
Manufacturer packaging code	UF
Reach Compliance Code	compliant
ECCN code	EAR99
Other features	IT ALSO OPRATES IN VOLTAGE MODE; ALSO ADJUSTABLE OUTPUT FROM 2.2V TO 5.25V
Analog Integrated Circuits - Other Types	DUAL SWITCHING CONTROLLER
control mode	CURRENT-MODE
Control Technology	PULSE WIDTH MODULATION
Maximum input voltage	5.5 V
Minimum input voltage	2.2 V
Nominal input voltage	3.6 V
JESD-30 code	S-PQCC-N24
JESD-609 code	e3
length	4 mm
Humidity sensitivity level	1
Number of functions	1
Number of terminals	24
Maximum operating temperature	125 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	HVQCCN
Encapsulate equivalent code	LCC24,.16SQ,20
Package shape	SQUARE
Package form	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	260
Certification status	Not Qualified
Maximum seat height	0.8 mm
surface mount	YES
Switch configuration	BUCK
Maximum switching frequency	1200 kHz
technology	CMOS
Temperature level	AUTOMOTIVE
Terminal surface	Matte Tin (Sn)
Terminal form	NO LEAD
Terminal pitch	0.5 mm
Terminal location	QUAD
Maximum time at peak reflow temperature	30
width	4 mm

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QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 1062

DUAL BUCK-BOOST + BUCK SYNCHRONOUS CONVERTERS

LTC3520

DESCRIPTION

Demonstration circuit 1062 is a micropower synchro-

nous buck-boost + buck converter based on the

LTC3520. The DC1062 has an input voltage range of

2.2 V to 5.5V and three output voltages: 3.3V @ up to

1A, 1.8V @ 600mA and 1.5V @ 200mA. The 1.5Vout is

an LDO regulator derived from either the 3.3Vout or

the 1.8Vout. The Buck-Boost + Buck converters can

operate in either low-power burst mode or low-noise

fixed-frequency PWM mode. The switching frequency

is programmed using a single resistor and each of the

output voltages can be independently shutdown. The

LTC3520 comes in a 24 pin 4×4 QFN package. These

features make the DC1062 demo board an ideal circuit

for use in Li-Ion battery-powered, hand-held applica-

tions.

Design files for this circuit board are available. Call

the LTC factory.

LTC is a trademark of Linear Technology Corporation

QUICK START PROCEDURE

Refer to Figure 1 for proper measurement equipment

setup and follow the procedure below:

Start with Loads 1, 2 and 3 set to 0A.

Set Power Supply anywhere between 2.2V to 5.5V.

Loads 1, 2 and 3 can be set from 0 – 500mA, 0 –

600mA and 0 – 200mA respectively. Load 1 can be

set up to 1A for Vin > 3V.

LTC3520IUF#TRPBF Related Products

	LTC3520IUF#TRPBF	LTC3520EUF#PBF	DC1062A	LTC3520IUF#PBF	LTC3520EUF#TRPBF
Description	IC REG BCK BST ADJ DL SYNC 24QFN	IC reg buck boost sync adj 24qfn	board eval for ltc3520euf	IC REG BCK BST ADJ DL SYNC 24QFN	IC REG BCK BST ADJ DL SYNC 24QFN
Brand Name	Linear Technology	Linear Technology	-	Linear Technology	Linear Technology
Is it Rohs certified?	conform to	conform to	-	conform to	conform to
Maker	Linear ( ADI )	Linear ( ADI )	-	Linear ( ADI )	Linear ( ADI )
Parts packaging code	QFN	QFN	-	QFN	QFN
package instruction	HVQCCN, LCC24,.16SQ,20	HVQCCN, LCC24,.16SQ,20	-	HVQCCN, LCC24,.16SQ,20	HVQCCN, LCC24,.16SQ,20
Contacts	24	24	-	24	24
Manufacturer packaging code	UF	UF	-	UF	UF
Reach Compliance Code	compliant	compliant	-	compliant	compliant
ECCN code	EAR99	EAR99	-	EAR99	EAR99
Other features	IT ALSO OPRATES IN VOLTAGE MODE; ALSO ADJUSTABLE OUTPUT FROM 2.2V TO 5.25V	IT ALSO OPRATES IN VOLTAGE MODE; ALSO ADJUSTABLE OUTPUT FROM 2.2V TO 5.25V	-	IT ALSO OPRATES IN VOLTAGE MODE; ALSO ADJUSTABLE OUTPUT FROM 2.2V TO 5.25V	IT ALSO OPRATES IN VOLTAGE MODE; ALSO ADJUSTABLE OUTPUT FROM 2.2V TO 5.25V
Analog Integrated Circuits - Other Types	DUAL SWITCHING CONTROLLER	DUAL SWITCHING CONTROLLER	-	DUAL SWITCHING CONTROLLER	DUAL SWITCHING CONTROLLER
control mode	CURRENT-MODE	CURRENT-MODE	-	CURRENT-MODE	CURRENT-MODE
Control Technology	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	-	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION
Maximum input voltage	5.5 V	5.5 V	-	5.5 V	5.5 V
Minimum input voltage	2.2 V	2.2 V	-	2.2 V	2.2 V
Nominal input voltage	3.6 V	3.6 V	-	3.6 V	3.6 V
JESD-30 code	S-PQCC-N24	S-PQCC-N24	-	S-PQCC-N24	S-PQCC-N24
JESD-609 code	e3	e3	-	e3	e3
length	4 mm	4 mm	-	4 mm	4 mm
Humidity sensitivity level	1	1	-	1	1
Number of functions	1	1	-	1	1
Number of terminals	24	24	-	24	24
Maximum operating temperature	125 °C	85 °C	-	125 °C	85 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	-	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	HVQCCN	HVQCCN	-	HVQCCN	HVQCCN
Encapsulate equivalent code	LCC24,.16SQ,20	LCC24,.16SQ,20	-	LCC24,.16SQ,20	LCC24,.16SQ,20
Package shape	SQUARE	SQUARE	-	SQUARE	SQUARE
Package form	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	-	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	260	260	-	260	260
Certification status	Not Qualified	Not Qualified	-	Not Qualified	Not Qualified
Maximum seat height	0.8 mm	0.8 mm	-	0.8 mm	0.8 mm
surface mount	YES	YES	-	YES	YES
Switch configuration	BUCK	BUCK	-	BUCK	BUCK
Maximum switching frequency	1200 kHz	1200 kHz	-	1200 kHz	1200 kHz
technology	CMOS	CMOS	-	CMOS	CMOS
Temperature level	AUTOMOTIVE	OTHER	-	AUTOMOTIVE	OTHER
Terminal surface	Matte Tin (Sn)	Matte Tin (Sn)	-	Matte Tin (Sn)	Matte Tin (Sn)
Terminal form	NO LEAD	NO LEAD	-	NO LEAD	NO LEAD
Terminal pitch	0.5 mm	0.5 mm	-	0.5 mm	0.5 mm
Terminal location	QUAD	QUAD	-	QUAD	QUAD
Maximum time at peak reflow temperature	30	30	-	30	30
width	4 mm	4 mm	-	4 mm	4 mm

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