Datasheet Linear Technology LTC1697

Manufacturer	Linear Technology
Series	LTC1697

High Efficiency Low Power 1W CCFL Switching Regulator

Datasheets

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PDF, 110 Kb, File uploaded: Sep 20, 2017

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Packaging

	LTC1697EMS#PBF	LTC1697EMS#TRPBF
N	1	2
Package	MS-10 Package Outline Drawing	MS-10 Package Outline Drawing
Package Code	MS	MS
Package Index	05-08-1661	05-08-1661
Pin Count	10	10

Parametrics

Parameters / Models	LTC1697EMS#PBF	LTC1697EMS#TRPBF
Demo Boards	DC510A	DC510A
Design Tools	LTspice Model	LTspice Model
Export Control	no	no
Integrated Inductor	no	no
Ishutdown, µA	1	1
Isupply, mA	0.9	0.9
Monolithic	yes	yes
Number of Outputs	1	1
Operating Temperature Range, °C	0 to 85	0 to 85
Polyphase	no	no
Switch Current, A	1.6	1.6
Synchronous	no	no
Topology	CCFL	CCFL
Topology 1	CCFL	CCFL
Vin Max, V	5.5	5.5
Vin Min, V	2.8	2.8
Vout Max 2, V	32	32

Eco Plan

	LTC1697EMS#PBF	LTC1697EMS#TRPBF
RoHS	Compliant	Compliant

Design Notes

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An Efficient and Low Cost Alternative to LEDs for Backlighting Handheld Computer Displays &mdash DN1004
PDF, 96 Kb, File published: Feb 1, 2004
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advertisement An Efficient and Low Cost Alternative to LEDs for Backlighting
Handheld Computer Displays вЂ“ Design Note 1004
David Canny
Introduction
The backlight for a handheld computerвЂ™s liquid crystal
display should be efficient, compact and inexpensive. The
two primary competing backlight solutions, white LEDs
and Cold Cathode Floresent Lamps (CCFLs), satisfy some
of these requirements but neither excel in all. Of these two,
white LEDs have recently gained popularity because of
their smaller size and easier-to-design controller circuitsвЂ”important during the technology boom when timeto-market often took precedence over cost and product
performance. CCFL solutions, however, continue to have
advantages, including better efficiency (resulting in longer
battery run times) and lower overall production costs.
Furthermore, recent advancements in CCFL drivers and
changes in the market have given CCFLs the advantage in
many applications. One of the most significant changes is
the rise in the importance of cost cutting where inexpensive CCFL solutions have always held the upper hand over
comparable LED circuits. This, plus easier-to-design and
more compact CCFL solutions, have made CCFL solutions
more desirable. A Compact CCFL Circuit
The circuit shown in Figure 1 is specifically designed to
control a single 1W CCFL. T1, Q1, Q2 and associated …

Articles

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A Compact and Power Efficient CCFL Controller for Handheld Devices &mdash LT Journal
PDF, 71 Kb, File published: Feb 1, 2004
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DESIGN IDEAS A Compact and Power Efficient CCFL
Controller for Handheld Devices
by David Canny
Cold Cathode Fluorescent Lamps
(CCFLs) offer the highest available
efficiency for backlighting an LCD
display, making them a popular choice for handheld devices. The
CCFL controller must also be efficient
to conserve battery power, and small,
to fit in the tight spaces required by 6
1 10 R1
330в„¦
1/4W VIN
2.7V TO 5.5V 5 T1 4 2 3 C2
Q1 0.15ВµF Q2 R2
200k C1
27pF
1.5kV CCFL
LAMP L1
33ВµF VIN 0VSEN SW
Li-Ion R4
1M SHDN
LTC1697 …

Model Line

Series: LTC1697 (2)

LTC1697EMS#PBF LTC1697EMS#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > LCD/CCD/OLED Bias