Datasheet Linear Technology LT3680

Manufacturer	Linear Technology
Series	LT3680

36V, 3.5A, 2.4MHz Step-Down Switching Regulator with 75µA Quiescent Current

Datasheets

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PDF, 310 Kb, Revision: B, File uploaded: Sep 18, 2017

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Packaging

	LT3680EDD#PBF	LT3680EDD#TRPBF	LT3680EMSE#PBF	LT3680EMSE#TRPBF	LT3680HMSE#PBF	LT3680HMSE#TRPBF	LT3680IDD#PBF	LT3680IDD#TRPBF	LT3680IMSE#PBF	LT3680IMSE#TRPBF
N	1	2	3	4	5	6	7	8	9	10
Package	3x3 DFN-10 Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	MS-10E Package Outline Drawing	MS-10E Package Outline Drawing	MS-10E Package Outline Drawing	MS-10E Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	3x3 DFN-10 Package Outline Drawing	MS-10E Package Outline Drawing	MS-10E Package Outline Drawing
Package Code	DD	DD	MSE	MSE	MSE	MSE	DD	DD	MSE	MSE
Package Index	05-08-1699	05-08-1699	05-08-1664	05-08-1664	05-08-1664	05-08-1664	05-08-1699	05-08-1699	05-08-1664	05-08-1664
Pin Count	10	10	10	10	10	10	10	10	10	10

Parametrics

Parameters / Models	LT3680EDD#PBF	LT3680EDD#TRPBF	LT3680EMSE#PBF	LT3680EMSE#TRPBF	LT3680HMSE#PBF	LT3680HMSE#TRPBF	LT3680IDD#PBF	LT3680IDD#TRPBF	LT3680IMSE#PBF	LT3680IMSE#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC1149A	DC1149A	DC1149A	DC1149A	DC1149A	DC1149A	DC1149A	DC1149A	DC1149A	DC1149A
Design Tools	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model
Export Control	no	no	no	no	no	no	no	no	no	no
Features	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good
Frequency, kHz	2400	2400	2400	2400	2400	2400	2400	2400	2400	2400
Frequency Adjust Range	200kHz - 2.4MHz	200kHz - 2.4MHz	200kHz - 2.4MHz	200kHz - 2.4MHz	200kHz - 2.4MHz	200kHz - 2.4MHz	200kHz - 2.4MHz	200kHz - 2.4MHz	200kHz - 2.4MHz	200kHz - 2.4MHz
Frequency Sync Range	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz
Integrated Inductor	no	no	no	no	no	no	no	no	no	no
Ishutdown, µA	1	1	1	1	1	1	1	1	1	1
Isupply, mA	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03	0.03
Max Phases	1	1	1	1	1	1	1	1	1	1
Monolithic	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
Number of Outputs	1	1	1	1	1	1	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85	-40 to 125	-40 to 125	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Output Current, A	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.5	3.5
Polyphase	no	no	no	no	no	no	no	no	no	no
Switch Current, A	5.4	5.4	5.4	5.4	5.4	5.4	5.4	5.4	5.4	5.4
Synchronous	no	no	no	no	no	no	no	no	no	no
Topology	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck
Vin Max, V	36	36	36	36	36	36	36	36	36	36
Vin Min, V	3.6	3.6	3.6	3.6	3.6	3.6	3.6	3.6	3.6	3.6
Vout Max, V	30	30	30	30	30	30	30	30	30	30
Vout Maximum	30V	30V	30V	30V	30V	30V	30V	30V	30V	30V
Vout Min, V	0.79	0.79	0.79	0.79	0.79	0.79	0.79	0.79	0.79	0.79

Eco Plan

	LT3680EDD#PBF	LT3680EDD#TRPBF	LT3680EMSE#PBF	LT3680EMSE#TRPBF	LT3680HMSE#PBF	LT3680HMSE#TRPBF	LT3680IDD#PBF	LT3680IDD#TRPBF	LT3680IMSE#PBF	LT3680IMSE#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Articles

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36V, 3.5A DC/DC Buck Regulators for Automotive, Industrial and Wall Adapter Applications Offer High Efficiency in a Small Package &mdash LT Journal
PDF, 258 Kb, File published: Jan 14, 2008
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DESIGN FEATURESвЂ‰L 36V, 3.5A DC/DC Buck Regulators
for Automotive, Industrial and Wall
Adapter Applications Offer High
Efficiency in a Small Package
by Kevin Huang Introduction
Automotive batteries, industrial power
supplies, distributed supplies and
wall transformers are all sources of
wide-ranging, high voltage inputs. The
easiest way to step down the voltage
from these sources is with a high voltage monolithic step-down switching
regulator that can directly accept a
wide input range and produce a wellregulated output. The LT3680 and
LT3693 are new step-down switching
regulators that accept inputs up to 36V
and provide excellent line and load
regulations and dynamic response.
Both regulators offer high efficiency
solutions over wide load range. The
LT3680 adds low ripple Burst ModeВ®
operation to maximize efficiency at
light load currents. LT3680 and LT3693 Features
Available in either a 10-pin MSOP …

Model Line

Series: LT3680 (10)

LT3680EDD#PBF LT3680EDD#TRPBF LT3680EMSE#PBF LT3680EMSE#TRPBF LT3680HMSE#PBF LT3680HMSE#TRPBF LT3680IDD#PBF LT3680IDD#TRPBF LT3680IMSE#PBF LT3680IMSE#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > Step-Down (Buck) Regulators > Micropower Buck Regulators | Internal Power Switch Buck
Space & Harsh Environment > Extended Temperature Plastic (H & MP) > Extended Temperature (H & MP) Switching Regulators