LT3420EDD-1#PBF datasheet, PDF

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LT3420EDD-1#PBF: DescriptionIC PHOTOFLASH CAP CHARGER 10-DFN; CategoryAnalog mixed-signal IC The signal circuit; File Size148KB，3 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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LT3420EDD-1#PBF Overview

IC PHOTOFLASH CAP CHARGER 10-DFN

LT3420EDD-1#PBF Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	conform to
Parts packaging code	DFN
package instruction	HVSON, SOLCC10,.12,20
Contacts	10
Manufacturer packaging code	DD
Reach Compliance Code	compliant
ECCN code	EAR99
Analog Integrated Circuits - Other Types	ANALOG CIRCUIT
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	85 °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)	260
power supply	3.3 V
Certification status	Not Qualified
Maximum seat height	0.8 mm
Maximum supply voltage (Vsup)	16 V
Minimum supply voltage (Vsup)	2.5 V
Nominal supply voltage (Vsup)	3.3 V
surface mount	YES
Temperature level	INDUSTRIAL
Terminal surface	Matte Tin (Sn)
Terminal form	NO LEAD
Terminal pitch	0.5 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	30
width	3 mm
Base Number Matches	1

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QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 646

STROBE CAPACITOR CHARGER, HIGH VOLTAGE SUPPLY

LT3420

DESCRIPTION

Demonstration circuit 646 is a DC-DC flyback

converter using the LT 3420EMS to rapidly charge an

output capacitor to 300V for photoflash applications.

It demonstrates a simple application circuit operating

in high efficiency and shows appropriate layout

techniques for the LT3420EMS. The circuit uses

small surface mount components and has very small

board space compared to conventional solutions.

This demonstration circuit is particularly useful for

applications such as digital cameras and high voltage

supplies that require high efficiency and small size.

Design files for this circuit board are available. Call the

LTC factory.

LT is a trademark of Linear Technology Corporation.

QUICK START PROCEDURE

Demonstration circuit 646 is easy to set up to evaluate the

performance of the LT3420EMS. Refer to Figure 1 for proper

measurement equipment setup and follow the procedure

below:

NOTE:

When measuring the input or output voltage ripple,

Set JP1 to DISCONNECT position for separate input

power operation. Connect input power source Vcc to the

Vcc and GND terminals, and limit the input voltage from

2.3V to 6V.

Connect load (a 220uF, 350V photoflash capacitor)

care must be taken to avoid a long ground lead on the

oscilloscope probe. Measure the input or output voltage

ripple by touching the probe tip directly across the V

OUT

and GND terminals. See Figure 2 for proper scope

probe technique.

NOTE:

For safe operation, always shield the circuit

between the +Strobe Cap and –Strobe Cap terminals.

Set JP2 to ON position to enable Charge operation.

Slowly turn on power source Vbatt and Vcc. Check for the

proper output voltages. V

OUT

= 300V.

NOTE:

If there is no output, temporarily disconnect the

when power is on, and always discharge the high

voltage output capacitor after power is off.

Warning: Operate by high voltage trained personnel only

With power off, connect input power source Vbatt to the

load and make sure that JP2 is set to ON position.

For single source operation, set the input source selector

Vbatt and GND terminals. Input voltage is limited to

between 1.8V to 6V.

Jumper JP1 to CONNECT position. Remove the

connection of power source Vcc. Limit the input voltage

from 2.3V to 6V. Vcc will be powered from Vbatt.

To shut down the circuit, connect the JP2 to OFF position.

The output capacitor charging is disabled.

LT3420EDD-1#PBF Related Products

	LT3420EDD-1#PBF	DC646A	LT3420EDD#PBF	LT3420EMS#PBF	LT3420EMS-1#PBF	LT3420EDD#TRPBF	LT3420EDD-1#TRPBF	LT3420EMS#TRPBF	LT3420EMS-1#TRPBF
Description	IC PHOTOFLASH CAP CHARGER 10-DFN	board eval for lt3420ems	IC PHOTOFLASH CAP CHARGER 10-DFN	IC PHOTOFLASH CAP CHARGER 10MSOP	IC PHOTOFLASH CAP CHARGER 10MSOP	IC PHOTOFLASH CAP CHARGER 10-DFN	IC PHOTOFLASH CAP CHARGER 10-DFN	IC PHOTOFLASH CAP CHARGER 10MSOP	IC PHOTOFLASH CAP CHARGER 10MSOP
Brand Name	Linear Technology	-	Linear Technology	Linear Technology	Linear Technology	Linear Technology	Linear Technology	Linear Technology	Linear Technology
Is it Rohs certified?	conform to	-	conform to	conform to	conform to	conform to	conform to	conform to	conform to
Parts packaging code	DFN	-	DFN	MSOP	MSOP	DFN	DFN	MSOP	MSOP
package instruction	HVSON, SOLCC10,.12,20	-	HVSON, SOLCC10,.12,20	TSSOP, TSSOP10,.19,20	TSSOP, TSSOP10,.19,20	HVSON,	HVSON,	TSSOP,	TSSOP,
Contacts	10	-	10	10	10	10	10	10	10
Manufacturer packaging code	DD	-	DD	MS	MS	DD	DD	MS	MS
Reach Compliance Code	compliant	-	compliant	compliant	compliant	compliant	compliant	compliant	compliant
ECCN code	EAR99	-	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
Analog Integrated Circuits - Other Types	ANALOG CIRCUIT	-	ANALOG CIRCUIT	ANALOG CIRCUIT	ANALOG CIRCUIT	ANALOG CIRCUIT	ANALOG CIRCUIT	ANALOG CIRCUIT	ANALOG CIRCUIT
JESD-30 code	S-PDSO-N10	-	S-PDSO-N10	S-PDSO-G10	S-PDSO-G10	S-PDSO-N10	S-PDSO-N10	S-PDSO-G10	S-PDSO-G10
JESD-609 code	e3	-	e3	e3	e3	-	e3	e3	e3
length	3 mm	-	3 mm	3 mm	3 mm	3 mm	3 mm	3 mm	3 mm
Humidity sensitivity level	1	-	1	1	1	-	1	1	1
Number of functions	1	-	1	1	1	1	1	1	1
Number of terminals	10	-	10	10	10	10	10	10	10
Maximum operating temperature	85 °C	-	85 °C	70 °C	70 °C	85 °C	85 °C	70 °C	70 °C
Package body material	PLASTIC/EPOXY	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	HVSON	-	HVSON	TSSOP	TSSOP	HVSON	HVSON	TSSOP	TSSOP
Package shape	SQUARE	-	SQUARE	SQUARE	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, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	260	-	260	260	260	NOT SPECIFIED	260	260	260
Certification status	Not Qualified	-	Not Qualified	Not Qualified	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	0.8 mm	0.8 mm	1.1 mm	1.1 mm
Maximum supply voltage (Vsup)	16 V	-	16 V	16 V	16 V	16 V	16 V	16 V	16 V
Minimum supply voltage (Vsup)	2.5 V	-	2.5 V	2.5 V	2.5 V	2.5 V	2.5 V	2.5 V	2.5 V
Nominal supply voltage (Vsup)	3.3 V	-	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V	3.3 V
surface mount	YES	-	YES	YES	YES	YES	YES	YES	YES
Temperature level	INDUSTRIAL	-	INDUSTRIAL	COMMERCIAL	COMMERCIAL	INDUSTRIAL	INDUSTRIAL	COMMERCIAL	COMMERCIAL
Terminal surface	Matte Tin (Sn)	-	Matte Tin (Sn)	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	NO LEAD	NO LEAD	GULL WING	GULL WING
Terminal pitch	0.5 mm	-	0.5 mm	0.5 mm	0.5 mm	0.5 mm	0.5 mm	0.5 mm	0.5 mm
Terminal location	DUAL	-	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	30	-	30	30	30	NOT SPECIFIED	30	30	30
width	3 mm	-	3 mm	3 mm	3 mm	3 mm	3 mm	3 mm	3 mm
Base Number Matches	1	-	1	1	-	1	1	1	-

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