LTC3417EDHC#TR datasheet, PDF - EEWORLD Datasheet

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LTC3417EDHC#TR: DescriptionLTC3417 - Dual Synchronous 1.4A/800mA 4MHz Step-Down DC/DC Regulator; Package: DFN; Pins: 16; Temperature Range: -40°C to 85°C; CategoryPower/power management The power supply circuit; File Size369KB，20 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html

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LTC3417EDHC#TR Overview

LTC3417 - Dual Synchronous 1.4A/800mA 4MHz Step-Down DC/DC Regulator; Package: DFN; Pins: 16; Temperature Range: -40°C to 85°C

LTC3417EDHC#TR Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	incompatible
Maker	Linear ( ADI )
Parts packaging code	DFN
package instruction	HVSON, SOLCC16,.12,20
Contacts	16
Manufacturer packaging code	DHC
Reach Compliance Code	not_compliant
ECCN code	EAR99
Analog Integrated Circuits - Other Types	DUAL SWITCHING CONTROLLER
control mode	CURRENT-MODE
Maximum input voltage	5.5 V
Minimum input voltage	2.25 V
Nominal input voltage	3.6 V
JESD-30 code	R-PDSO-N16
JESD-609 code	e0
length	5 mm
Humidity sensitivity level	1
Number of functions	1
Number of terminals	16
Maximum operating temperature	85 °C
Minimum operating temperature
Maximum output current	2.25 A
Package body material	PLASTIC/EPOXY
encapsulated code	HVSON
Encapsulate equivalent code	SOLCC16,.12,20
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	235
Certification status	Not Qualified
Maximum seat height	0.8 mm
surface mount	YES
Switch configuration	BUCK
Maximum switching frequency	4000 kHz
technology	CMOS
Temperature level	OTHER
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	NO LEAD
Terminal pitch	0.5 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	20
width	3 mm

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FEATURES

LTC3417

Dual Synchronous

1.4A/800mA 4MHz

Step-Down DC/DC Regulator

DESCRIPTION

The LTC

3417 is a dual constant frequency, synchronous

step-down DC/DC converter. Intended for medium power

applications, it operates from a 2.25V to 5.5V input volt-

age range and has a constant programmable switching

frequency, allowing the use of tiny, low cost capacitors

and inductors 2mm or less in height. Each output voltage

is adjustable from 0.8V to 5V. Internal synchronous low

DS(ON)

power switches provide high efﬁciency without

the need for external Schottky diodes.

A user selectable mode input allows the user to trade

off ripple voltage for light load efﬁciency. Burst Mode

operation provides high efﬁciency at light loads, while

Pulse Skip mode provides low ripple noise at light loads.

A phase mode pin allows the second channel to operate

in-phase or 180° out-of-phase with respect to channel 1.

Out-of-phase operation produces lower RMS current on

and thus lower RMS derating on the input capacitor.

To further maximize battery life, the P-channel MOSFETs

are turned on continuously in dropout (100% duty cycle)

and both channels draw a total quiescent current of only

125μA. In shutdown, the device draws <1μA.

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

All other trademarks are the property of their respective owners. Protected by U.S. Patents

including 5481178, 6580258, 6304066, 6127815, 6498466, 6611131, 6144194.

High Efﬁciency: Up to 95%

1.4A/800mA Guaranteed Minimum Output Current

No Schottky Diodes Required

Programmable Frequency Operation: 1.5MHz or

Adjustable From 0.6MHz to 4MHz

Low R

DS(ON)

Internal Switches

Short-Circuit Protected

: 2.25V to 5.5V

Current Mode Operation for Excellent Line and

Load Transient Response

125μA Quiescent Current in Sleep Mode

Ultralow Shutdown Current: I

< 1μA

Low Dropout Operation: 100% Duty Cycle

Power Good Output

Phase Pin Selects 2nd Channel Phase Relationship

with Respect to 1st Channel

Internal Soft-Start with Individual Run Pin Control

Available in Small Thermally Enhanced

(5mm

3mm) DFN and 20-Lead TSSOP Packages

APPLICATIONS

PDAs/Palmtop PCs

Digital Cameras

Cellular Phones

PC Cards

Wireless and DSL Modems

TYPICAL APPLICATION

2.5V TO 5.5V

10μF

OUT1

1.8V

1.4A

1.5μH

22pF

511k

FB1

22μF

412k

TH1

5.9k

2200pF

GND

TH2

2.87k

6800pF

3417 TA01

OUT2 Efﬁciency

(Burst Mode Operation)

100

REFER TO FIGURE 4

2.2μH

EFFICIENCY (%)

FREQ

SW1

RUN1

LTC3417

FB2

SW2

RUN2

866k

412k

10μF

OUT2

2.5V

800mA

EFFICIENCY

POWER LOSS (W)

0.1

0.01

0.001

POWER LOSS

= 3.6V

OUT

= 2.5V

FREQ = 1MHz

0.01

0.1

LOAD CURRENT (A)

3417 TA01a

22pF

0.001

0.0001

3417fd

LTC3417EDHC#TR Related Products

	LTC3417EDHC#TR	LTC3417AEDHC#TR	LTC3417AEFE#TR	LTC3417EFE#TR	LTC3417AIFE#TR
Description	LTC3417 - Dual Synchronous 1.4A/800mA 4MHz Step-Down DC/DC Regulator; Package: DFN; Pins: 16; Temperature Range: -40°C to 85°C	LTC3417A - Dual Synchronous 1.5A/1A 4MHz Step-Down DC/DC Regulator; Package: DFN; Pins: 16; Temperature Range: -40°C to 85°C	LTC3417A - Dual Synchronous 1.5A/1A 4MHz Step-Down DC/DC Regulator; Package: TSSOP; Pins: 20; Temperature Range: -40°C to 85°C	LTC3417 - Dual Synchronous 1.4A/800mA 4MHz Step-Down DC/DC Regulator; Package: TSSOP; Pins: 20; Temperature Range: -40°C to 85°C	LTC3417A - Dual Synchronous 1.5A/1A 4MHz Step-Down DC/DC Regulator; Package: TSSOP; Pins: 20; Temperature Range: -40°C to 85°C
Brand Name	Linear Technology	Linear Technology	Linear Technology	Linear Technology	Linear Technology
Is it Rohs certified?	incompatible	incompatible	incompatible	incompatible	incompatible
Parts packaging code	DFN	DFN	TSSOP	TSSOP	TSSOP
package instruction	HVSON, SOLCC16,.12,20	HVSON, SOLCC16,.12,20	HTSSOP, TSSOP20,.25	TSSOP, TSSOP20,.25	HTSSOP, TSSOP20,.25
Contacts	16	16	20	20	20
Manufacturer packaging code	DHC	DHC	FE	FE	FE
Reach Compliance Code	not_compliant	not_compliant	not_compliant	not_compliant	not_compliant
ECCN code	EAR99	EAR99	EAR99	EAR99	EAR99
Analog Integrated Circuits - Other Types	DUAL SWITCHING CONTROLLER	DUAL SWITCHING CONTROLLER	DUAL SWITCHING CONTROLLER	DUAL SWITCHING CONTROLLER	DUAL SWITCHING CONTROLLER
control mode	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE
Maximum input voltage	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V
Minimum input voltage	2.25 V	2.25 V	2.25 V	2.25 V	2.25 V
Nominal input voltage	3.6 V	3.6 V	3.6 V	3.6 V	3.6 V
JESD-30 code	R-PDSO-N16	R-PDSO-N16	R-PDSO-G20	R-PDSO-G20	R-PDSO-G20
JESD-609 code	e0	e0	e0	e0	e0
length	5 mm	5 mm	6.5 mm	6.5 mm	6.5 mm
Humidity sensitivity level	1	1	1	1	1
Number of functions	1	1	1	1	1
Number of terminals	16	16	20	20	20
Maximum operating temperature	85 °C	85 °C	85 °C	85 °C	85 °C
Maximum output current	2.25 A	2.5 A	2.5 A	2.25 A	2.5 A
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	HVSON	HVSON	HTSSOP	TSSOP	HTSSOP
Encapsulate equivalent code	SOLCC16,.12,20	SOLCC16,.12,20	TSSOP20,.25	TSSOP20,.25	TSSOP20,.25
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	235	235	235	235	235
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	0.8 mm	0.8 mm	1.2 mm	1.2 mm	1.2 mm
surface mount	YES	YES	YES	YES	YES
Switch configuration	BUCK	BUCK	BUCK	BUCK	BUCK
Maximum switching frequency	4000 kHz	4000 kHz	4000 kHz	4000 kHz	4000 kHz
technology	CMOS	CMOS	CMOS	CMOS	CMOS
Temperature level	OTHER	COMMERCIAL EXTENDED	COMMERCIAL EXTENDED	OTHER	COMMERCIAL EXTENDED
Terminal surface	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)
Terminal form	NO LEAD	NO LEAD	GULL WING	GULL WING	GULL WING
Terminal pitch	0.5 mm	0.5 mm	0.65 mm	0.65 mm	0.65 mm
Terminal location	DUAL	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	20	20	20	20	20
width	3 mm	3 mm	4.4 mm	4.4 mm	4.4 mm
Base Number Matches	-	1	1	1	-

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