LTC3721EUF-1#PBF datasheet, PDF

Datasheet> All Categories > Power/power management> The power supply circuit> LTC3721EUF-1#PBF

LTC3721EUF-1#PBF: DescriptionIC REG CTRLR PUSH-PULL 16QFN; CategoryPower/power management The power supply circuit; File Size178KB，16 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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LTC3721EUF-1#PBF Overview

IC REG CTRLR PUSH-PULL 16QFN

LTC3721EUF-1#PBF Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	conform to
Maker	Linear ( ADI )
Parts packaging code	QFN
package instruction	HVSON, LCC16,.16SQ,25
Contacts	16
Manufacturer packaging code	UF
Reach Compliance Code	compliant
ECCN code	EAR99
Analog Integrated Circuits - Other Types	SWITCHING CONTROLLER
control mode	CURRENT-MODE
Control Technology	PULSE WIDTH MODULATION
Maximum input voltage	9.5 V
Minimum input voltage	6.5 V
Nominal input voltage	9.5 V
JESD-30 code	S-PDSO-N16
JESD-609 code	e3
length	4 mm
Humidity sensitivity level	1
Number of functions	1
Number of terminals	16
Maximum operating temperature	85 °C
Minimum operating temperature
Maximum output current	0.1 A
Package body material	PLASTIC/EPOXY
encapsulated code	HVSON
Encapsulate equivalent code	LCC16,.16SQ,25
Package shape	SQUARE
Package form	SMALL OUTLINE, 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	PUSH-PULL
Maximum switching frequency	1000 kHz
technology	CMOS
Temperature level	OTHER
Terminal surface	Matte Tin (Sn)
Terminal form	NO LEAD
Terminal pitch	0.65 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	30
width	4 mm

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LTC3721-1

Push-Pull PWM Controller

FEATURES

■

DESCRIPTIO

High Efficiency Push-Pull PWM

1.5A Sink, 1A Source Output Drivers

Adjustable Push-Pull Dead-Time

Adjustable System Undervoltage Lockout and

Hysteresis

Adjustable Leading Edge Blanking

Low Start-Up and Quiescent Currents

Current Mode Operation

Single Resistor Slope Compensation

UVLO and 25mA Shunt Regulator

Programmable Fixed Frequency Operation to 1MHz

Soft-Start, Cycle-by-Cycle Current Limiting and

Hiccup Mode Short-Circuit Protection

5V, 15mA Low Dropout Regulator

16-Pin SSOP and (4mm

4mm) QFN Packages

The LTC

3721-1 push-pull PWM controller provides all of

the control and protection functions necessary for com-

pact and highly efficient, isolated power converters. High

integration minimizes external component count, while

preserving design flexibility.

The robust push-pull output stages switch at half the

oscillator frequency. Dead-time is independently pro-

grammed with an external resistor. A UVLO program input

provides precise system turn-on and turn off voltages. The

LTC3721-1 features peak current mode control with pro-

grammable slope compensation and leading edge

blanking.

The LTC3721-1 features extremely low operating and

start-up currents and reliable short-circuit and

overtemperature protection. The LTC3721-1 is offered in

16-pin SSOP and (4mm

4mm) QFN packages.

, LTC and LT are registered trademarks of Linear Technology Corporation.

APPLICATIO S

■

Telecommunications, Infrastructure Power Systems

Distributed Power Architectures

Server Power Supplies

High Density Power Modules

TYPICAL APPLICATIO

Isolated Push-Pull Converter

OUT

UVLO

FROM

AUXILIARY

WINDING

DPRG

REF

LEB

DRVA

DRVB

LTC3721-1

REF

OUT

COMP

OUT

COLL

COMP

LT1431

TOP

REF

MID

FB GND

GND-F GND-S

37211 TA01

sn37211 37211fs

LTC3721EUF-1#PBF Related Products

	LTC3721EUF-1#PBF	LTC3721EUF-1#TR	LTC3721EGN-1#TR	LTC3721EGN-1#PBF	LTC3721EUF-1#TRPBF	LTC3721EGN-1#TRPBF
Description	IC REG CTRLR PUSH-PULL 16QFN	IC reg ctrlr iso pwm CM 16-qfn	IC reg ctrlr iso pwm CM 16-ssop	IC REG CTRLR PUSH-PULL 16SSOP	IC REG CTRLR PUSH-PULL 16QFN	IC REG CTRLR PUSH-PULL 16SSOP
Brand Name	Linear Technology	Linear Technology	Linear Technology	Linear Technology	Linear Technology	Linear Technology
Is it Rohs certified?	conform to	incompatible	incompatible	conform to	conform to	conform to
Maker	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )
Parts packaging code	QFN	QFN	SSOP	SSOP	QFN	SSOP
package instruction	HVSON, LCC16,.16SQ,25	HVSON,	SSOP,	SSOP, SSOP16,.25	HVSON,	SSOP,
Contacts	16	16	16	16	16	16
Manufacturer packaging code	UF	UF	GN	GN	UF	GN
Reach Compliance Code	compliant	_compli	_compli	compliant	compliant	compliant
ECCN code	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
Analog Integrated Circuits - Other Types	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER
control mode	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE
Control Technology	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION
Maximum input voltage	9.5 V	9.5 V	9.5 V	9.5 V	9.5 V	9.5 V
Minimum input voltage	6.5 V	6.5 V	6.5 V	6.5 V	6.5 V	6.5 V
Nominal input voltage	9.5 V	9.5 V	9.5 V	9.5 V	9.5 V	9.5 V
JESD-30 code	S-PDSO-N16	S-PDSO-N16	R-PDSO-G16	R-PDSO-G16	S-PDSO-N16	R-PDSO-G16
JESD-609 code	e3	e0	e0	e3	e3	e3
length	4 mm	4 mm	4.89 mm	4.89 mm	4 mm	4.89 mm
Humidity sensitivity level	1	1	1	1	1	1
Number of functions	1	1	1	1	1	1
Number of terminals	16	16	16	16	16	16
Maximum operating temperature	85 °C	85 °C	85 °C	85 °C	85 °C	85 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	HVSON	HVSON	SSOP	SSOP	HVSON	SSOP
Package shape	SQUARE	SQUARE	RECTANGULAR	RECTANGULAR	SQUARE	RECTANGULAR
Package form	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	260	235	235	260	260	260
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	0.8 mm	0.8 mm	1.75 mm	1.75 mm	0.8 mm	1.75 mm
surface mount	YES	YES	YES	YES	YES	YES
Switch configuration	PUSH-PULL	PUSH-PULL	PUSH-PULL	PUSH-PULL	PUSH-PULL	PUSH-PULL
Maximum switching frequency	1000 kHz	1000 kHz	1000 kHz	1000 kHz	1000 kHz	1000 kHz
Temperature level	OTHER	OTHER	OTHER	OTHER	OTHER	OTHER
Terminal surface	Matte Tin (Sn)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)
Terminal form	NO LEAD	NO LEAD	GULL WING	GULL WING	NO LEAD	GULL WING
Terminal pitch	0.65 mm	0.65 mm	0.635 mm	0.635 mm	0.65 mm	0.635 mm
Terminal location	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	30	20	20	30	30	30
width	4 mm	4 mm	3.899 mm	3.899 mm	4 mm	3.899 mm

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