Datasheet Linear Technology LT4320

Manufacturer	Linear Technology
Series	LT4320

Ideal Diode Bridge Controller

Datasheets

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PDF, 976 Kb, Revision: B, File uploaded: Oct 26, 2017

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Prices

Packaging

	LT4320HDD#PBF	LT4320HDD#TRPBF	LT4320HMSE#PBF	LT4320HMSE#TRPBF	LT4320HN8#PBF	LT4320IDD#PBF	LT4320IDD#TRPBF	LT4320IMSE#PBF	LT4320IMSE#TRPBF	LT4320IN8#PBF	LT4320MPMSE#PBF	LT4320MPMSE#TRPBF
N	1	2	3	4	5	6	7	8	9	10	11	12
Package	3x3 DFN-8 Package Outline Drawing	3x3 DFN-8 Package Outline Drawing	MS-12E Package Outline Drawing	MS-12E Package Outline Drawing	N-8 Package Outline Drawing	3x3 DFN-8 Package Outline Drawing	3x3 DFN-8 Package Outline Drawing	MS-12E Package Outline Drawing	MS-12E Package Outline Drawing	N-8 Package Outline Drawing	MS-12E Package Outline Drawing	MS-12E Package Outline Drawing
Package Code	DD	DD	MSE	MSE	N	DD	DD	MSE	MSE	N	MSE	MSE
Package Index	05-08-1698	05-08-1698	05-08-1666	05-08-1666	05-08-1510 (N8)	05-08-1698	05-08-1698	05-08-1666	05-08-1666	05-08-1510 (N8)	05-08-1666	05-08-1666
Pin Count	8	8	12	12	8	8	8	12	12	8	12	12

Parametrics

Parameters / Models	LT4320HDD#PBF	LT4320HDD#TRPBF	LT4320HMSE#PBF	LT4320HMSE#TRPBF	LT4320HN8#PBF	LT4320IDD#PBF	LT4320IDD#TRPBF	LT4320IMSE#PBF	LT4320IMSE#TRPBF	LT4320IN8#PBF	LT4320MPMSE#PBF	LT4320MPMSE#TRPBF
Number of Channels	1	1	1	1	1	1	1	1	1	1	1	1
Demo Boards	DC1902B,DC2047A-A,DC1823B,DC2465A	DC1902B,DC2047A-A,DC1823B,DC2465A	DC1902B,DC2047A-A,DC1823B,DC2465A	DC1902B,DC2047A-A,DC1823B,DC2465A	DC1902B,DC2047A-A,DC1823B,DC2465A	DC1902B,DC2047A-A,DC1823B,DC2465A	DC1902B,DC2047A-A,DC1823B,DC2465A	DC1902B,DC2047A-A,DC1823B,DC2465A	DC1902B,DC2047A-A,DC1823B,DC2465A	DC1902B,DC2047A-A,DC1823B,DC2465A	DC1902B,DC2047A-A,DC1823B,DC2465A	DC1902B,DC2047A-A,DC1823B,DC2465A
Design Tools	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File
Diode Off with Back-to-Back FETs?	no	no	no	no	no	no	no	no	no	no	no	no
Export Control	no	no	no	no	no	no	no	no	no	no	no	no
Ideal Diode	Single Bridge with External N-Channel	Single Bridge with External N-Channel	Single Bridge with External N-Channel	Single Bridge with External N-Channel	Single Bridge with External N-Channel	Single Bridge with External N-Channel	Single Bridge with External N-Channel	Single Bridge with External N-Channel	Single Bridge with External N-Channel	Single Bridge with External N-Channel	Single Bridge with External N-Channel	Single Bridge with External N-Channel
Internal FET	no	no	no	no	no	no	no	no	no	no	no	no
Operating Temperature Range, °C	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 125	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-55 to 125	-55 to 125
Supply for FET Gate drive	Internal Charge Pump	Internal Charge Pump	Internal Charge Pump	Internal Charge Pump	Internal Charge Pump	Internal Charge Pump	Internal Charge Pump	Internal Charge Pump	Internal Charge Pump	Internal Charge Pump	Internal Charge Pump	Internal Charge Pump
Total Quiescent Current, mA	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3	1.3
Typical Current Capability, A	20	20	20	20	20	20	20	20	20	20	20	20
Vin Max, V	72	72	72	72	72	72	72	72	72	72	72	72
Vin Min, V	9	9	9	9	9	9	9	9	9	9	9	9

Eco Plan

	LT4320HDD#PBF	LT4320HDD#TRPBF	LT4320HMSE#PBF	LT4320HMSE#TRPBF	LT4320HN8#PBF	LT4320IDD#PBF	LT4320IDD#TRPBF	LT4320IMSE#PBF	LT4320IMSE#TRPBF	LT4320IN8#PBF	LT4320MPMSE#PBF	LT4320MPMSE#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Other Options

LT4320-1

Design Notes

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Active Bridge Rectifiers Reduce Heat Dissipation within PoE Security Cameras &mdash DN519
PDF, 106 Kb, File published: Aug 28, 2013
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Active Bridge Rectifiers Reduce Heat Dissipation within PoE
Security Cameras вЂ“ Design Note 519
Ryan Huff
Introduction
Power over Ethernet (PoE) has been embraced by the
video surveillance industry as a solution to an age-old
problem: complicated cabling. For instance, a basic,
traditional fixed-view security camera requires two
cables: one for power (10W to 15W from a 24V AC
or 12V DC), and a separate, coax cable for the video
signal. With PoE, a single Ethernet cable carries both
video data and power. Everything is simplified. Right?
Not quite. To meet compatibility with existing systems,
camera manufacturers must produce PoE-enabled
cameras that are also compatible with legacy power
sourcesвЂ”they must accept PoE 37V to 57V DC from
an RJ-45 jack or 24V AC, +12V DC, or вЂ“12V DC from
an auxiliary power connector.
The Old Way Loses Power
Figure 1 shows the power architecture used by many
PoE camera manufacturers to solve this problem. A
full-bridge diode rectifier after the auxiliary (old-school)
input produces positive DC power from either 24V AC, …

Articles

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Meet Green Standards in 24VAC and 12VAC Lighting Systems: Replace Halogen Bulbs with LEDs Driven by High Power Factor, High Efficiency Converter &mdash LT Journal
PDF, 4.0 Mb, File published: Oct 9, 2013
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Meet Green Standards in 24VAC and 12VAC Lighting
Systems: Replace Halogen Bulbs with LEDs Driven by
High Power Factor, High Efficiency Converter
Keith Szolusha LEDs are increasingly used in 24VAC and 12VAC lighting systems as a robust,
energy efficient and high performance alternative to halogen lamps. Power
converters that drive the LEDs should have a high power factor (above 90% in order
to meet generally accepted green standards), should be efficient, use a minimal
number of components and should run cool. They do not need isolation.
One solution that meets these requirements combines a rectifier bridge and a
current-controlled synchronous step-up/
step-down converter. Specifically, a synchronous 4-switch buck-boost converter
can be paired with a 4-switch ideal diode rectifier bridge for high power LEDs; lower
power solutions can use a standard diode
bridge. Both solutions are shown here.
The LT3791 60V 4-switch synchronous
buck-boost controller IC can drive constant current (either DC or pulsating) into PVIN
24VRMS
PULSATING 120Hz M5 RIN
0.003О© M6 CIN
1ВµF
50V 51О©
0.1ВµF TG2
24VAC …

Model Line

Series: LT4320 (12)

LT4320HDD#PBF LT4320HDD#TRPBF LT4320HMSE#PBF LT4320HMSE#TRPBF LT4320HN8#PBF LT4320IDD#PBF LT4320IDD#TRPBF LT4320IMSE#PBF LT4320IMSE#TRPBF LT4320IN8#PBF LT4320MPMSE#PBF LT4320MPMSE#TRPBF

Manufacturer's Classification

Monitor, Control and Protection > PowerPath Controllers & Ideal Diodes | Ideal Diode Bridge
Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Power Management