Datasheet Linear Technology LTC4120

Manufacturer	Linear Technology
Series	LTC4120

Wireless Power Receiver and 400mA Buck Battery Charger

Datasheets

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PDF, 890 Kb, File uploaded: Oct 2, 2017

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Prices

Packaging

	LTC4120EUD#PBF	LTC4120EUD#TRPBF	LTC4120IUD#PBF	LTC4120IUD#TRPBF
N	1	2	3	4
Package	3x3 QFN-16 Package Outline Drawing	3x3 QFN-16 Package Outline Drawing	3x3 QFN-16 Package Outline Drawing	3x3 QFN-16 Package Outline Drawing
Package Code	UD	UD	UD	UD
Package Index	05-08-1691	05-08-1691	05-08-1691	05-08-1691
Pin Count	16	16	16	16

Parametrics

Parameters / Models	LTC4120EUD#PBF	LTC4120EUD#TRPBF	LTC4120IUD#PBF	LTC4120IUD#TRPBF
Charge Termination	Timer	Timer	Timer	Timer
Demo Boards	DC2181A-A,DC2181A-B,DC2386A-B	DC2181A-A,DC2181A-B,DC2386A-B	DC2181A-A,DC2181A-B,DC2386A-B	DC2181A-A,DC2181A-B,DC2386A-B
Design Tools	LTspice File	LTspice File	LTspice File	LTspice File
Export Control	no	no	no	no
Float Voltage, V	Adj (3.5V to 11V)	Adj (3.5V to 11V)	Adj (3.5V to 11V)	Adj (3.5V to 11V)
Max Charge Current, A	0.4	0.4	0.4	0.4
Number of Cells	1, 2	1, 2	1, 2	1, 2
Operating Temperature Range, °C	0 to 85	0 to 85	-40 to 85	-40 to 85
Type of Charger	Switching	Switching	Switching	Switching

Eco Plan

	LTC4120EUD#PBF	LTC4120EUD#TRPBF	LTC4120IUD#PBF	LTC4120IUD#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant

Other Options

LTC4120-4.2

Application Notes

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Wireless Power User Guide &mdash AN138
PDF, 1.3 Mb, File published: Dec 1, 2012
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Application Note 138
October 2013
Wireless Power User Guide
Trevor Barcelo OVERVIEW
An inductive wireless power system consists of a transmitter that generates a high frequency alternating magnetic
field and a receiver that collects power from that field.
The resonant coupled system described here provides for
increased power transmit distance and reduced alignment
sensitivity, with no need for a coupling core. To build a wireless power system four items are required:
transmitter electronics, transmit coil, receive coil and
receiver electronics. The LTC4120 wireless synchronous
buck charger combined with minimal external circuitry
comprises the receiver electronics (Figure 1). Please see
the LTC4120 product page for more details including the
data sheet and demo board design files.
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. Figure 1. LTC4120 Receiver Demo Board (Rx Portion of DC1969A Kit) an138fc AN138-1 Application Note 138 Figure 2. Implementation of Basic Transmitter Reference Design (Tx Portion of DC1969A Kit) Figure 3. Proxi-Point Transmitter Figure 4. Proxi-2D Transmitter an138fc AN138-2 Application Note 138
Transmitter Solutions BASIC TRANSMITTER Currently there are four transmitter options available for
design or off-the-shelf purchase: The basic transmitter for the LTC4120, described in the
following sections, combined with a receive coil and
LTC4120-based receiver electronics can be used to
produce a wireless battery charging system. This wireless battery charging system enables evaluation of the
LTC4120 using standard components. 1. Basic: This wireless power design (Figure 2) was …

Model Line

Series: LTC4120 (4)

LTC4120EUD#PBF LTC4120EUD#TRPBF LTC4120IUD#PBF LTC4120IUD#TRPBF

Manufacturer's Classification

Power Management > Battery Management > Battery Charger IC > Switching Battery Chargers
Power Management > Battery Management > Wireless Power Transfer