Datasheet Linear Technology LTC3832-1

Manufacturer	Linear Technology
Series	LTC3832-1

High Power Step-Down Synchronous DC/DC Controllers for Low Voltage Operation

Datasheets

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PDF, 329 Kb, Language: en, File uploaded: Sep 23, 2017, Pages: 24
High Power Step-Down Synchronous DC/DC Controllers for Low Voltage Operation

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Prices

Packaging

	LTC3832-1ES8#PBF	LTC3832-1ES8#TRPBF
N	1	2
Package	SO-8 Package Outline Drawing	SO-8 Package Outline Drawing
Package Code	S8	S8
Package Index	05-08-1610 (S8)	05-08-1610 (S8)
Pin Count	8	8

Parametrics

Parameters / Models	LTC3832-1ES8#PBF	LTC3832-1ES8#TRPBF
Architecture	Constant Frequency Voltage Mode	Constant Frequency Voltage Mode
Demo Boards	DC469B	DC469B
Design Tools	LTspice File	LTspice File
Export Control	no	no
Features	No Rsense, Fixed Output	No Rsense, Fixed Output
Frequency, kHz	500	500
Frequency Adjust Range	100kHz - 500kHz	100kHz - 500kHz
Frequency Sync Range	100kHz - 500kHz	100kHz - 500kHz
Integrated Inductor	no	no
Ishutdown, µA	1	1
Isupply, mA	0.7	0.7
Max Phases	1	1
Monolithic	no	no
Number of Outputs	1	1
Operating Temperature Range, °C	0 to 85	0 to 85
Output Current, A	20	20
Polyphase	no	no
Sense Resistor	None	None
Switch Current, A	20	20
Synchronous	yes	yes
Topology	Buck	Buck
Vin Max, V	8	8
Vin Min, V	3	3
Vout Max, V	7.28	7.28
Vout Maximum	0.91VIN	0.91VIN
Vout Min, V	0.6	0.6
Vref Accuracy Over Temp, %	0.83	0.83

Eco Plan

	LTC3832-1ES8#PBF	LTC3832-1ES8#TRPBF
RoHS	Compliant	Compliant

Other Options

LTC3832 LTC3832

Design Notes

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High Current Step-Down Controller Regulates to 0.6V Output from 3V Input &mdash DN322
PDF, 83 Kb, File published: Oct 1, 2003
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advertisement High Current Step-Down Controller Regulates to 0.6V Output
from 3V Input вЂ“ Design Note 322
Charlie Zhao and Wei Chen The LTC3832 uses a synchronous switching architecture with external N-channel MOSFETs. An adjustable
current limit is provided by sensing the current through
the drain-source on-resistance of the top MOSFET,
eliminating the need for a current sense resistor. The
LTC3832 has a 300kHz free-running switching frequency
that can be programmed or synchronized externally
from 100kHz to 500kHz. All of these features promote
a DC/DC converter solution with high efп¬Ѓciency and
small size.
The LTC3832 also includes a thermal protection circuit which disables both gate drivers if the junction
temperature reaches 150В°C. The chip resumes normal
operation when the temperature drops below 125В°C.
Design Examples
Figure 1 shows the schematic diagram and photo of a
compact 1V/7A step-down DC/DC converter that accepts
2.2ОјF 10О© 0.01ОјF LTC3832-1
SS VCC/PVCC2
COMP G1 15k
GND MBR0520T1 VIN = 5V
VOUT = 1V 95
90 …

Articles

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Versatile LTC3830 and LTC3832 Deliver High Efficiency for Step-Down, Step-Up and Inverting Power Conversions &mdash LT Journal
PDF, 62 Kb, File published: May 1, 2002
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DESIGN IDEAS Versatile LTC3830 and LTC3832 Deliver
High Efficiency for Step-Down, Step-Up
and Inverting Power Conversions
by Wei Chen and Charlie Zhao
Introduction
The LTC3830 and the LTC3832 are
pin-to-pin compatible upgrades to the
LTC1430вЂ”a popular IC for low voltage step-down applications due to its
simplicity and high efficiency. The
LTC3830 and the LTC3832 remove
the LTC1430вЂ™s frequency foldback at
startup, thus eliminating inrush current and resulting output overshoot.
Other improvements over the
LTC1430 include tighter gm distribu-+
D3
MBR0520LT1
DZ
MMSZ5242B
5V +
PVCC1 PVCC2 +
2.2ВµF SENSE +
SENSE вЂ“
NC Doug La Porte Tiny and Efficient Boost Converter …

Model Line

Series: LTC3832-1 (2)

LTC3832-1ES8#PBF LTC3832-1ES8#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > Step-Down (Buck) Regulators > External Power Switch Buck Controllers

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