Datasheet Linear Technology LTC1960

Manufacturer	Linear Technology
Series	LTC1960

Dual Battery Charger/ Selector with SPI Interface

Datasheets

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PDF, 322 Kb, File uploaded: Oct 2, 2017

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Packaging

	LTC1960CG#PBF	LTC1960CG#TRPBF	LTC1960CUHF#PBF	LTC1960CUHF#TRPBF
N	1	2	3	4
Package	SSOP-36 Package Outline Drawing	SSOP-36 Package Outline Drawing	5x7 QFN-38 Package Outline Drawing	5x7 QFN-38 Package Outline Drawing
Package Code	G	G	UHF	UHF
Package Index	05-08-1640 (G36)	05-08-1640 (G36)	05-08-1701	05-08-1701
Pin Count	36	36	38	38

Parametrics

Parameters / Models	LTC1960CG#PBF	LTC1960CG#TRPBF	LTC1960CUHF#PBF	LTC1960CUHF#TRPBF
Battery Chemistry	Li-Ion, Li-Polymer, NiCd, NiMH, Lead Acid	Li-Ion, Li-Polymer, NiCd, NiMH, Lead Acid	Li-Ion, Li-Polymer, NiCd, NiMH, Lead Acid	Li-Ion, Li-Polymer, NiCd, NiMH, Lead Acid
Charge Termination	Microcontroller	Microcontroller	Microcontroller	Microcontroller
Demo Boards	DC1904A	DC1904A	DC1904A	DC1904A
Export Control	no	no	no	no
Float Voltage, V	Adj	Adj	Adj	Adj
Internal Pass Element	no	no	no	no
Max Charge Current, A	4	4	4	4
Number of Cells	1 to 18 (Ni), 2 to 6 (Li)	1 to 18 (Ni), 2 to 6 (Li)	1 to 18 (Ni), 2 to 6 (Li)	1 to 18 (Ni), 2 to 6 (Li)
Operating Temperature Range, °C	0 to 70	0 to 70	0 to 70	0 to 70
Type of Charger	Switching, SPI	Switching, SPI	Switching, SPI	Switching, SPI
Vin Max, V	28	28	28	28
Vin Min, V	6	6	6	6

Eco Plan

	LTC1960CG#PBF	LTC1960CG#TRPBF	LTC1960CUHF#PBF	LTC1960CUHF#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant

Design Notes

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Dual Battery Power Manager Increases Run Time by 12% and Cuts Charge Time in Half &mdash DN277
PDF, 74 Kb, File published: Feb 1, 2002
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Dual Battery Power Manager Increases Run Time by 12%
and Cuts Charge Time in Half вЂ“ Design Note 277
Mark Gurries Although a multibattery simultaneous charge and discharge system can be more difп¬Ѓcult to implement than
a sequential system, paralleling the charging and discharging dual batteries signiп¬Ѓcantly reduces charge time
and extends run time. The LTCВ®1960 solves many design
complexities by placing all of the hard-to-design charge
and discharge control functions in a single package,
making implementation of dual battery management
systems possible for a wide variety of applications. In
addition to controlling simultaneous battery charging
and discharging, it controls all PowerPathв„ў switching
between the two batteries, the wall adapter and the
equipmentвЂ™s DC/DC converters, plus it includes many
circuit protection functions. Figure 1 shows a block
diagram of a typical application.
The LTC1960 comprises two controllers: The PowerPath controller manages the delivery of power from the
WALL
ADAPTER
INPUT SYSTEM POWER two batteries and a DC input supply while the charge
controller manages charging the batteries.
The heart of the PowerPath controller is the ideal diode
circuit that allows precise voltage tracking between the
batteries. The ideal diode circuit uses the same MOSFET …

Articles

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Monolithic Dual Battery Power Manager Increases Run Time and Decreases Charge Time &mdash LT Journal
PDF, 78 Kb, File published: Dec 1, 2001
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DESIGN FEATURES Monolithic Dual Battery Power
Manager Increases Run Time and
Decreases Charge Time
by Mark Gurries
Attractive Features but
Many portable computers and other Tough to Implement Introduction 12.0 BAT1
VOLTAGE BATTERY VOLTAGE (V) 11.0 DUAL BAT2
VOLTAGE 10.0
9.0 BAT2
VOLTAGE 8.0 SEQUENTIAL 12.0
11.0
10.0 BAT1
VOLTAGE 9.0 11
MINUTES 8.0
0 20 40 60 80 100 120 140 160 180
TIME (min)
1960 G12 BATTERY TYPE: 10.8V Li-Ion(MOLTECH NI2020)
LOAD CURRENT = 3A Figure 1. Comparison of battery discharge
times for a dual (simultaneous) system and
for a sequential system 12 How does it work? Figure 1 shows
how in high current drain applications, paralleling two batteries can
extend battery discharge time to more
than twice that of a single battery. …

Model Line

Series: LTC1960 (4)

LTC1960CG#PBF LTC1960CG#TRPBF LTC1960CUHF#PBF LTC1960CUHF#TRPBF

Manufacturer's Classification

Power Management > Battery Management > Battery Charger IC > Switching Battery Chargers | SMBus/I2C/SPI Controlled Battery Chargers