Datasheet Linear Technology LTC4011

Manufacturer	Linear Technology
Series	LTC4011

High Efficiency Standalone Nickel Battery Charger

Datasheets

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PDF, 674 Kb, Language: en, File uploaded: Oct 2, 2017, Pages: 26
High Efficiency Standalone Nickel Battery Charger

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Packaging

	LTC4011CFE#PBF	LTC4011CFE#TRPBF
N	1	2
Package	TSSOP-20 Package Outline Drawing	TSSOP-20 Package Outline Drawing
Package Code	FE	FE
Package Index	05-08-1663 (CB)	05-08-1663 (CB)
Pin Count	20	20

Parametrics

Parameters / Models	LTC4011CFE#PBF	LTC4011CFE#TRPBF
Battery Chemistry	NiCd, NiMH	NiCd, NiMH
Charge Termination	-dV, dT/dt, On-board timer	-dV, dT/dt, On-board timer
Demo Boards	DC674B	DC674B
Export Control	no	no
Float Voltage, V	Adj	Adj
Internal Pass Element	no	no
Max Charge Current, A	4	4
Number of Cells	1 to 16	1 to 16
Operating Temperature Range, °C	0 to 70	0 to 70
Type of Charger	Switching	Switching
Vin Max, V	34	34
Vin Min, V	4.5	4.5

Eco Plan

	LTC4011CFE#PBF	LTC4011CFE#TRPBF
RoHS	Compliant	Compliant

Design Notes

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Fast, High Efficiency, Standalone NiMH/NiCd Battery Charging &mdash DN380
PDF, 92 Kb, File published: Nov 28, 2005
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advertisement Fast, High Efficiency, Standalone NiMH/NiCd Battery Charging
Design Note 380
Fran Hoffart
Introduction
Although recent popular attention is focused on Lithium
Ion batteries, one must not forget that other battery
chemistries, such as Nickel Cadmium (NiCd) and Nickel
Metal Hydride (NiMH) have advantages in rechargeable
power systems. Nickel-based batteries are robust, capable
of high discharge rates, have good cycle life, do not
require special protection circuitry and are less expensive
than Li-Ion. Among the two, NiMH batteries are rapidly
replacing NiCd because of their higher capacity (40% to
50% more) and the environmental concerns of the toxic
cadmium contained in NiCd batteries. NiCd/NiMH Battery Charging Basics
Batteries come in many sizes and capacity ratings.
When specifying charge current, it is commonly related
to a batteryвЂ™s capacity, or simply вЂњCвЂќ. The letter вЂњCвЂќ is a
term used to indicate the manufacturersвЂ™ stated battery
discharge capacity which is measured in milliamp-hours
(mAh). This capacity rating becomes important when
fast charging because it determines the required charge
current for proper charge termination. …

Articles

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High Efficiency Nickel Charger Operating to 34V is Easily Configured to Deliver a Safe Fast Charge &mdash LT Journal
PDF, 262 Kb, File published: Mar 28, 2006
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DESIGN FEATURES L High Efп¬Ѓciency Nickel Charger
Operating to 34V is Easily Conп¬Ѓgured
to Deliver a Safe Fast Charge
by James A. McKenzie Introduction Accurate, Rock-Solid
Fast Charge Termination The LTC4011 implements a complete
fast charge control algorithm, best
suited for charge rates of C/2 to 2C 100
95 EFFICIENCY (%) SINGLE CELL VOLTAGE (V) DCIN = 5.5V 90 DCIN = 20V 85
80
75
70 1.65 36 1.60 34 1.55 32 SINGLE CELL
VOLTAGE 1.50
1.45 30
28 BATTERY
TEMPERATURE 1.40 26
1A 1.35 65 BATTERY TEMPERATURE (В°C) The LTC4011 is a complete standalone
nickel chemistry fast charger that operates at high efп¬Ѓciency with an input
voltage of up to 34V, even with a battery
voltage that is much less than the DC
input supply. Typical efп¬Ѓciency with a
5.5V and 20V input supply is shown
in Figure 1. An undervoltage lockout
of 4.25V ensures stable operation with …

Model Line

Series: LTC4011 (2)

LTC4011CFE#PBF LTC4011CFE#TRPBF

Manufacturer's Classification

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

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