Datasheet Linear Technology LT8602

Manufacturer	Linear Technology
Series	LT8602

42V Quad Monolithic Synchronous Step-Down Regulator

Datasheets

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PDF, 1.9 Mb, Language: en, File uploaded: Sep 19, 2017, Pages: 30
42V Quad Monolithic Synchronous Step-Down Regulator

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Prices

Packaging

	LT8602ELXE#PBF	LT8602EUJ#PBF	LT8602EUJ#TRPBF	LT8602ILXE#PBF	LT8602IUJ#PBF	LT8602IUJ#TRPBF
N	1	2	3	4	5	6
Package	7mm x 7mm LQFP-48 Package Outline Drawing	6x6 QFN-40 Package Outline Drawing	6x6 QFN-40 Package Outline Drawing	7mm x 7mm LQFP-48 Package Outline Drawing	6x6 QFN-40 Package Outline Drawing	6x6 QFN-40 Package Outline Drawing
Package Code	LXE	UJ	UJ	LXE	UJ	UJ
Package Index	05-08-1832	05-08-1728	05-08-1728	05-08-1832	05-08-1728	05-08-1728
Pin Count	48	40	40	48	40	40

Parametrics

Parameters / Models	LT8602ELXE#PBF	LT8602EUJ#PBF	LT8602EUJ#TRPBF	LT8602ILXE#PBF	LT8602IUJ#PBF	LT8602IUJ#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
Demo Boards	DC1949A	DC1949A	DC1949A	DC1949A	DC1949A	DC1949A
Design Tools	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File
Export Control	no	no	no	no	no	no
Features	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, PolyPhase	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, PolyPhase	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, PolyPhase	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, PolyPhase	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, PolyPhase	Burst Mode, Resistor Set Frequency, External Synchronization, Power Good, PolyPhase
Frequency, kHz	2200	2200	2200	2200	2200	2200
Frequency Adjust Range	250kHz - 2.2MHz	250kHz - 2.2MHz	250kHz - 2.2MHz	250kHz - 2.2MHz	250kHz - 2.2MHz	250kHz - 2.2MHz
Frequency Sync Range	250kHz - 2.2MHz	250kHz - 2.2MHz	250kHz - 2.2MHz	250kHz - 2.2MHz	250kHz - 2.2MHz	250kHz - 2.2MHz
Integrated Inductor	no	no	no	no	no	no
Ishutdown, µA	0.1	0.1	0.1	0.1	0.1	0.1
Isupply, mA	0.03	0.03	0.03	0.03	0.03	0.03
Max Phases	2	2	2	2	2	2
Monolithic	yes	yes	yes	yes	yes	yes
Number of Outputs	4	4	4	4	4	4
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	-40 to 85	-40 to 85	-40 to 85
Output Current, A	2.5	2.5	2.5	2.5	2.5	2.5
Output Current 2, A	1.8	1.8	1.8	1.8	1.8	1.8
Output Current 3, A	1.8	1.8	1.8	1.8	1.8	1.8
Polyphase	yes	yes	yes	yes	yes	yes
Switch Current, A	4	4	4	4	4	4
Switch Current 2, A	2.3	2.3	2.3	2.3	2.3	2.3
Switch Current 3, A	3.1	3.1	3.1	3.1	3.1	3.1
Synchronous	yes	yes	yes	yes	yes	yes
Topology	Buck	Buck	Buck	Buck	Buck	Buck
Topology 1	Buck	Buck	Buck	Buck	Buck	Buck
Topology 2	Buck	Buck	Buck	Buck	Buck	Buck
Topology 3	Buck	Buck	Buck	Buck	Buck	Buck
Vin Max, V	42	42	42	42	42	42
Vin Min, V	3	3	3	3	3	3
Vout Max, V	42	42	42	42	42	42
Vout Max 2, V	42	42	42	42	42	42
Vout Max 3, V	5.5	5.5	5.5	5.5	5.5	5.5
Vout Min, V	1	1	1	1	1	1
Vout Min 2, V	1	1	1	1	1	1
Vout Min 3, V	0.8	0.8	0.8	0.8	0.8	0.8
Vref Accuracy Over Temp, %	1.2	1.2	1.2	1.2	1.2	1.2

Eco Plan

	LT8602ELXE#PBF	LT8602EUJ#PBF	LT8602EUJ#TRPBF	LT8602ILXE#PBF	LT8602IUJ#PBF	LT8602IUJ#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Design Notes

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42V Quad Monolithic Synchronous Step-Down Regulator with 30ОјA Quiescent Current &mdash DN544
PDF, 306 Kb, File published: Sep 21, 2015
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42V Quad Monolithic Synchronous Step-Down Regulator
with 30ВµA Quiescent Current
Design Note 544
Zhongming Ye
Introduction
Industrial and automotive applications require robust,
easy-to-use, compact DC/DC converters to produce
a variety of low voltage power supplies. The LT8602
monolithic quad synchronous step-down converter in
a 6mm Г— 6mm package is capable of providing four
outputs from a wide input range of 3V to 42V. It is
versatile and easy to use with features such as low
EMI and adjustable operating frequency up to 2.2MHz.
It consumes only 30ВµA quiescent current from the
input source even when regulating the outputs.
Small Size, Low EMI, Quad Step-Down
Solution
The LTВ®8602 integrates two high voltage (HV) and
two low voltage (LV) synchronous regulators in a
QFN (6mm Г— 6mm) package. Replacing external
Schottky diodes with internal synchronous switches
minimizes the solution size and also increases efficiency, reducing power dissipation. Figure 1. Top Center View of
the Demo Board DC1949A …

Model Line

Series: LT8602 (6)

LT8602ELXE#PBF LT8602EUJ#PBF LT8602EUJ#TRPBF LT8602ILXE#PBF LT8602IUJ#PBF LT8602IUJ#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > Step-Down (Buck) Regulators > Multiple Output Buck | Micropower Buck Regulators | Internal Power Switch Buck | High Input Voltage Buck