Datasheet Linear Technology LTC3428

Manufacturer	Linear Technology
Series	LTC3428

4A, 2MHz Dual Phase Step-Up DC/DC Converter in 3mm × 3mm DFN

Datasheets

PDF, 225 Kb, Revision: B, File uploaded: Sep 21, 2017

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Packaging

	LTC3428EDD#PBF	LTC3428EDD#TRPBF
N	1	2
Package	3x3 DFN-10 Package Outline Drawing	3x3 DFN-10 Package Outline Drawing
Package Code	DD	DD
Package Index	05-08-1699	05-08-1699
Pin Count	10	10

Parametrics

Parameters / Models	LTC3428EDD#PBF	LTC3428EDD#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC700A	DC700A
Design Tools	LTspice Model	LTspice Model
Export Control	no	no
Features	PolyPhase	PolyPhase
Frequency, kHz	2000	2000
Integrated Inductor	no	no
Ishutdown, µA	100	100
Isupply, mA	1.3	1.3
Monolithic	yes	yes
Number of Outputs	1	1
Operating Temperature Range, °C	0 to 85	0 to 85
Polyphase	no	no
Switch Current, A	5	5
Synchronous	no	no
Topology	Boost	Boost
Vin Max, V	4.5	4.5
Vin Min, V	1.5	1.5
Vin Min Startup, V	1.5	1.5
Vout Max, V	5.25	5.25
Vout Min, V	1.6	1.6
Vswitch Max, V	6	6

Eco Plan

	LTC3428EDD#PBF	LTC3428EDD#TRPBF
RoHS	Compliant	Compliant

Design Notes

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2-Phase Boost Converter Delivers 10W from a 3mm x 3mm DFN Package &mdash DN354
PDF, 98 Kb, File published: Jan 1, 2005
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advertisement 2-Phase Boost Converter Delivers 10W from a 3mm Г— 3mm
DFN Package вЂ“ Design Note 354
Jesus Rosales
Introduction
Small size, high efп¬Ѓciency, low noise and simplicity are
all key features for battery-powered applications and
point-of-load converters in low voltage systems. The
LTC В®3428 is well suited for these applications because
it offers these features as well as minimum output ripple
and component count. It can start up with as little as
1.5V and operates with inputs up to 4.5V. Its dual phase
architecture allows for an effective switching frequency
of 2MHz (1MHz/phase), which minimizes inductor and
capacitor size. ripple frequency. This reduces the peak-to-peak output
ripple current, which in turn makes it easier to п¬Ѓlter out
switching frequency ripple and noise. Input ripple current is also reduced, which minimizes stress on other
components and reduces required input capacitance.
The circuit in Figure 1 produces only 20mVP-P of output
voltage ripple, as shown in Figure 2.
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their
respective owners. Dual Phase Converter Reduces Output Ripple
The LT3428 incorporates two internal 93mО©, N-channel …

Model Line

Series: LTC3428 (2)

LTC3428EDD#PBF LTC3428EDD#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > Step-Up (Boost) Regulators > Internal Power Switch Boost

Slices

Microcontrollers