Datasheet Linear Technology LT1769

Manufacturer	Linear Technology
Series	LT1769

Constant-Current/Constant-Voltage 2A Battery Charger with Input Current Limiting

Datasheets

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PDF, 243 Kb, Language: en, File uploaded: Oct 2, 2017, Pages: 16
Constant-Current/Constant-Voltage 2A Battery Charger with Input Current Limiting

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Packaging

	LT1769CFE#PBF	LT1769CFE#TRPBF	LT1769CGN#PBF	LT1769CGN#TRPBF	LT1769IFE#PBF	LT1769IFE#TRPBF	LT1769IGN#PBF	LT1769IGN#TRPBF
N	1	2	3	4	5	6	7	8
Package	TSSOP-20 Package Outline Drawing	TSSOP-20 Package Outline Drawing	SSOP-28 Package Outline Drawing	SSOP-28 Package Outline Drawing	TSSOP-20 Package Outline Drawing	TSSOP-20 Package Outline Drawing	SSOP-28 Package Outline Drawing	SSOP-28 Package Outline Drawing
Package Code	FE	FE	GN	GN	FE	FE	GN	GN
Package Index	05-08-1663 (CB)	05-08-1663 (CB)	05-08-1641 (GN28)	05-08-1641 (GN28)	05-08-1663 (CB)	05-08-1663 (CB)	05-08-1641 (GN28)	05-08-1641 (GN28)
Pin Count	20	20	28	28	20	20	28	28

Parametrics

Parameters / Models	LT1769CFE#PBF	LT1769CFE#TRPBF	LT1769CGN#PBF	LT1769CGN#TRPBF	LT1769IFE#PBF	LT1769IFE#TRPBF	LT1769IGN#PBF	LT1769IGN#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	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	Microcontroller	Microcontroller	Microcontroller	Microcontroller
Demo Boards	DC243A,DC299A-D	DC243A,DC299A-D	DC243A,DC299A-D	DC243A,DC299A-D	DC243A,DC299A-D	DC243A,DC299A-D	DC243A,DC299A-D	DC243A,DC299A-D
Export Control	no	no	no	no	no	no	no	no
Float Voltage, V	Adj	Adj	Adj	Adj	Adj	Adj	Adj	Adj
Internal Pass Element	yes	yes	yes	yes	yes	yes	yes	yes
Max Charge Current, A	2	2	2	2	2	2	2	2
Number of Cells	1 to 4 (Li), 1 to 12 (Ni)	1 to 4 (Li), 1 to 12 (Ni)	1 to 4 (Li), 1 to 12 (Ni)	1 to 4 (Li), 1 to 12 (Ni)	1 to 4 (Li), 1 to 12 (Ni)	1 to 4 (Li), 1 to 12 (Ni)	1 to 4 (Li), 1 to 12 (Ni)	1 to 4 (Li), 1 to 12 (Ni)
Operating Temperature Range, °C	0 to 70	0 to 70	0 to 70	0 to 70	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Type of Charger	Switching	Switching	Switching	Switching	Switching	Switching	Switching	Switching
Vin Max, V	29	29	29	29	29	29	29	29
Vin Min, V	7	7	7	7	7	7	7	7

Eco Plan

	LT1769CFE#PBF	LT1769CFE#TRPBF	LT1769CGN#PBF	LT1769CGN#TRPBF	LT1769IFE#PBF	LT1769IFE#TRPBF	LT1769IGN#PBF	LT1769IGN#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Design Notes

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Li-Ion Charge Termination IC Interfaces with PWM Switchers &mdash DN242
PDF, 74 Kb, File published: Oct 2, 2001
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Li-Ion Charge Termination IC Interfaces with PWM Switchers
Design Note 242
Fran Hoffart
Rechargeable lithium-ion batteries are rapidly becoming the battery of choice for many battery-powered
products. These products include notebook computers, PDAs, video camcorders, digital cameras, cellular
phones, portable test equipment and others. Compared
to other rechargeable power sources, Li-Ion batteries
have higher energy density for both weight and volume
and provide longer run time between charges. tery from overtemperature and overcurrent conditions.
In addition, battery packs may also contain back-toback MOSFET switches that disconnect the battery if
an overcurrent condition exists for either charge or
discharge, or if an overvoltage or undervoltage condition exists. Many of these precautions are needed
because lithium-ion cells are easily damaged by both
overcharge and overdischarge conditions. Charging Li-Ion batteries is a relatively simple process.
Apply a current-limited (at a 1C rate) constant voltage
(В±1% tolerance) for approximately three hours, then
stop charging. (C is a battery term used to indicate
the Ampere-hour capacity of a battery). A complete
charge cycle may also include precharge qualiп¬Ѓcation
for battery temperature and precharge qualiп¬Ѓcation for
deeply discharged batteries. LTВ®1510 Battery Charger IC
The LT1510 is a high efп¬Ѓciency switching regulator
power IC designed speciп¬Ѓcally for battery charging …

Model Line

Series: LT1769 (8)

LT1769CFE#PBF LT1769CFE#TRPBF LT1769CGN#PBF LT1769CGN#TRPBF LT1769IFE#PBF LT1769IFE#TRPBF LT1769IGN#PBF LT1769IGN#TRPBF

Manufacturer's Classification

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