LTC3805IDD-5#TRMPBF datasheet, PDF

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LTC3805IDD-5#TRMPBF: DescriptionIC SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10, 3 X 3 MM, LEAD FREE, PLASTIC, MO-229WEED-2, DFN-10, Switching Regulator or Controller; CategoryPower/power management The power supply circuit; File Size203KB，20 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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LTC3805IDD-5#TRMPBF Overview

IC SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10, 3 X 3 MM, LEAD FREE, PLASTIC, MO-229WEED-2, DFN-10, Switching Regulator or Controller

LTC3805IDD-5#TRMPBF Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	Linear ( ADI )
Parts packaging code	SON
package instruction	HVSON, SOLCC10,.12,20
Contacts	10
Reach Compliance Code	compliant
ECCN code	EAR99
Analog Integrated Circuits - Other Types	SWITCHING CONTROLLER
control mode	CURRENT-MODE
Maximum input voltage	8.9 V
Minimum input voltage	4.15 V
Nominal input voltage	5 V
JESD-30 code	S-PDSO-N10
JESD-609 code	e3
length	3 mm
Humidity sensitivity level	1
Number of functions	1
Number of terminals	10
Maximum operating temperature	125 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	HVSON
Encapsulate equivalent code	SOLCC10,.12,20
Package shape	SQUARE
Package form	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	250
Certification status	Not Qualified
Maximum seat height	0.8 mm
surface mount	YES
Switch configuration	SINGLE
Maximum switching frequency	700 kHz
technology	CMOS
Temperature level	AUTOMOTIVE
Terminal surface	Matte Tin (Sn)
Terminal form	NO LEAD
Terminal pitch	0.5 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	3 mm

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LTC3805-5

Adjustable Frequency

Current Mode Flyback/

Boost/SEPIC DC/DC Controller

FEATURES

DESCRIPTION

The LTC

3805-5 is a current mode DC/DC controller de-

signed to drive an N-channel MOSFET in ﬂyback, boost

and SEPIC converter applications. Operating frequency

and slope compensation can be programmed by external

resistors. Programmable overcurrent sensing protects

the converter from overload and short-circuit conditions.

Soft-start can be programmed using an external capacitor

and the soft-start capacitor also programs an automatic

restart feature.

The LTC3805-5 provides ±1.5% output voltage accuracy

and consumes only 360μA of quiescent current during

normal operation and only 40μA during micropower start-

up. Using a 9.5V internal shunt regulator, the LTC3805-5

can be powered from a high V

through a resistor or it

can be powered directly from a low impedance DC voltage

from 4.7V to 8.8V.

The LTC3805-5 is available in the 10-lead MSOP package

and the 3mm

3mm DFN package.

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

All other trademarks are the property of their respective owners.

and V

OUT

Limited Only by External Components

4.5V Undervoltage Lockout Threshold

Adjustable Slope Compensation

Adjustable Overcurrent Protection With Automatic

Restart

Adjustable Operating Frequency (70kHz to 700kHz)

With One External Resistor

Synchronizable to an External Clock

±1.5% Reference Accuracy

Only 100mV Current Sense Voltage Drop

RUN Pin With Precision Threshold and Adjustable

Hysteresis

Programmable Soft-Start With One External Capacitor

Low Quiescent Current: 360μA

Small 10-Lead MSOP and 3mm

3mm DFN

APPLICATIONS

Automotive Power Supplies

Telecom Power Supplies

Isolated Electronic Equipment

Auxiliary/Housekeeping Power Supplies

Power over Ethernet

TYPICAL APPLICATION

Efﬁciency and Power Loss vs Load Current

5V to 12V/1A Boost Converter

4.3μH

22μF

×2

RUN

20k

470pF

0.1μF

118k

SSFLT

SYNC

GND

UPS840

OUT

12V

EFFICIENCY (%)

100

2.5

GATE

LTC3805-5

SENSE

191k

1.33k

100μF

5V EFFICIENCY

8.5V EFFICIENCY

2.0

POWER LOSS (W)

8.5V LOSS

5V LOSS

1.5

8mΩ

13.7k

38055 TA01

0.5

0.01

0.1

LOAD CURRENT (A)

38055TA01b

38055fb

LTC3805IDD-5#TRMPBF Related Products

	LTC3805IDD-5#TRMPBF	LTC3805EDD-5#TRMPBF	LTC3805EMSE-5#TRMPBF	LTC3805HMSE-5#TRMPBF	LTC3805IMSE-5#TRMPBF
Description	IC SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10, 3 X 3 MM, LEAD FREE, PLASTIC, MO-229WEED-2, DFN-10, Switching Regulator or Controller	IC SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10, 3 X 3 MM, LEAD FREE, PLASTIC, MO-229WEED-2, DFN-10, Switching Regulator or Controller	IC SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10, LEAD FREE, PLASTIC, MSOP-10, Switching Regulator or Controller	IC SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10, LEAD FREE, PLASTIC, MSOP-10, Switching Regulator or Controller	IC SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PDSO10, LEAD FREE, PLASTIC, MSOP-10, Switching Regulator or Controller
Is it lead-free?	Lead free	Lead free	Lead free	Lead free	Lead free
Is it Rohs certified?	conform to	conform to	conform to	conform to	conform to
Maker	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )
Parts packaging code	SON	SON	MSOP	MSOP	MSOP
package instruction	HVSON, SOLCC10,.12,20	HVSON, SOLCC10,.12,20	HTSSOP, TSSOP10,.19,20	HTSSOP, TSSOP10,.19,20	HTSSOP, TSSOP10,.19,20
Contacts	10	10	10	10	10
Reach Compliance Code	compliant	compliant	compliant	compliant	compliant
ECCN code	EAR99	EAR99	EAR99	EAR99	EAR99
Analog Integrated Circuits - Other Types	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER
control mode	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE
Maximum input voltage	8.9 V	8.9 V	8.9 V	8.9 V	8.9 V
Minimum input voltage	4.15 V	4.15 V	4.15 V	4.15 V	4.15 V
Nominal input voltage	5 V	5 V	5 V	5 V	5 V
JESD-30 code	S-PDSO-N10	S-PDSO-N10	S-PDSO-G10	S-PDSO-G10	S-PDSO-G10
JESD-609 code	e3	e3	e3	e3	e3
length	3 mm	3 mm	3 mm	3 mm	3 mm
Humidity sensitivity level	1	1	1	1	1
Number of functions	1	1	1	1	1
Number of terminals	10	10	10	10	10
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	HVSON	HVSON	HTSSOP	HTSSOP	HTSSOP
Encapsulate equivalent code	SOLCC10,.12,20	SOLCC10,.12,20	TSSOP10,.19,20	TSSOP10,.19,20	TSSOP10,.19,20
Package shape	SQUARE	SQUARE	SQUARE	SQUARE	SQUARE
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, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	250	260	260	260	250
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	0.8 mm	0.8 mm	1.1 mm	1.1 mm	1.1 mm
surface mount	YES	YES	YES	YES	YES
Switch configuration	SINGLE	SINGLE	SINGLE	SINGLE	SINGLE
Maximum switching frequency	700 kHz	700 kHz	700 kHz	700 kHz	700 kHz
technology	CMOS	CMOS	CMOS	CMOS	CMOS
Terminal surface	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)
Terminal form	NO LEAD	NO LEAD	GULL WING	GULL WING	GULL WING
Terminal pitch	0.5 mm	0.5 mm	0.5 mm	0.5 mm	0.5 mm
Terminal location	DUAL	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED	30	30	30	NOT SPECIFIED
width	3 mm	3 mm	3 mm	3 mm	3 mm
Maximum operating temperature	125 °C	85 °C	85 °C	-	125 °C
Temperature level	AUTOMOTIVE	OTHER	OTHER	-	AUTOMOTIVE

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