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LT1932ES6#PBF

Description
LED Driver 8 Segment 1600uA Supply Current 6-Pin TSOT-23 T/R
File Size232KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric Compare View All

LT1932ES6#PBF Overview

LED Driver 8 Segment 1600uA Supply Current 6-Pin TSOT-23 T/R

LT1932ES6#PBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)0
Part StatusUnconfirmed
HTS8542.39.00.01
Number of Segments8
Minimum Operating Supply Voltage (V)1
Maximum Operating Supply Voltage (V)10
Typical Operating Supply Voltage (V)1.8|2.5|3.3|5|9
Maximum Supply Current (uA)1600
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeExtended
PackagingTape and Reel
Standard Package NameSOT
Pin Count6
Supplier PackageTSOT-23
MountingSurface Mount
Package Height0.9(Max)
Package Length2.9
Package Width1.75(Max)
PCB changed6
Lead ShapeGull-wing
LT1932
Constant-Current DC/DC
LED Driver in ThinSOT
FEATURES
s
s
s
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
Up to 80% Efficiency
Inherently Matched LED Current
Adjustable Control of LED Current
Drives Five White LEDs from 2V
Drives Six White LEDs from 2.7V
Drives Eight White LEDs from 3V
Disconnects LEDs In Shutdown
1.2MHz Fixed Frequency Switching
Uses Tiny Ceramic Capacitors
Uses Tiny 1mm-Tall Inductors
Regulates Current Even When V
IN
> V
OUT
Operates with V
IN
as Low as 1V
Low Profile (1mm) ThinSOT
TM
Package
The LT
®
1932 is a fixed frequency step-up DC/DC converter
designed to operate as a constant-current source. Be-
cause it directly regulates output current, the LT1932 is
ideal for driving light emitting diodes (LEDs) whose light
intensity is proportional to the current passing through
them, not the voltage across their terminals.
With an input voltage range of 1V to 10V, the device works
from a variety of input sources. The LT1932 accurately
regulates LED current even when the input voltage is
higher than the LED voltage, greatly simplifying battery-
powered designs. A single external resistor sets LED
current between 5mA and 40mA, which can then be easily
adjusted using either a DC voltage or a pulse width
modulated (PWM) signal. When the LT1932 is placed in
shutdown, the LEDs are disconnected from the output,
ensuring a quiescent current of under 1µA for the entire
circuit. The device’s 1.2MHz switching frequency permits
the use of tiny, low profile chip inductors and capacitors to
minimize footprint and cost in space-conscious portable
applications.
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
Cellular Telephones
Handheld Computers
Digital Cameras
Portable MP3 Players
Pagers
TYPICAL APPLICATIO
L1
6.8µH
Li-Ion Driver for Four White LEDs
D1
85
80
75
70
65
60
55
0
1932 TA01
V
IN
2.7V TO 4.2V
C1
4.7µF
6
V
IN
LT1932
5
1
SW
3
15mA
PWM
DIMMING
CONTROL
SHDN
R
SET
4
R
SET
1.50k
LED
GND
2
C2
1µF
EFFICIENCY (%)
C1: TAIYO YUDEN JMK212BJ475
C2: TAIYO YUDEN EMK212BJ105
D1:ZETEX ZHCS400
L1: SUMIDA CLQ4D106R8 OR PANASONIC ELJEA6R8
U
Efficiency
V
IN
= 4.2V
V
IN
= 2.7V
5
10
15
LED CURRENT (mA)
20
1932 TA02
U
U
1932f
1

LT1932ES6#PBF Related Products

LT1932ES6#PBF LT1932ES6#TR LT1932ES6#TRMPBF (CUT REEL) LT1932ES6#TRMPBF LT1932ES6#TRPBF
Description LED Driver 8 Segment 1600uA Supply Current 6-Pin TSOT-23 T/R LED Driver 8 Segment 1600uA Supply Current 6-Pin TSOT-23 T/R LED Driver 8 Segment 1600uA Supply Current 6-Pin TSOT-23 T/R LED Driver 8 Segment 1600uA Supply Current 6-Pin TSOT-23 T/R LED Driver 8 Segment 1600uA Supply Current 6-Pin TSOT-23 T/R
EU restricts the use of certain hazardous substances Compliant Not Compliant Compliant Compliant Compliant
ECCN (US) - EAR99 EAR99 EAR99 EAR99
Part Status Unconfirmed Unconfirmed Active Active Active
Number of Segments 8 8 8 8 8
Minimum Operating Supply Voltage (V) 1 1 1 1 1
Maximum Operating Supply Voltage (V) 10 10 10 10 10
Typical Operating Supply Voltage (V) 1.8|2.5|3.3|5|9 1.8|2.5|3.3|5|9 1.8|2.5|3.3|5|9 1.8|2.5|3.3|5|9 3.3|5|9|1.8|2.5
Maximum Supply Current (uA) 1600 1600 1600 1600 1600
Minimum Operating Temperature (°C) -40 -40 -40 -40 -40
Maximum Operating Temperature (°C) 85 85 85 85 85
Supplier Temperature Grade Extended Extended Extended Extended Extended
Packaging Tape and Reel Tape and Reel Tape and Reel Tape and Reel Tape and Reel
Standard Package Name SOT SOT-23 SOT SOT SOT
Pin Count 6 6 6 6 6
Supplier Package TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23
Mounting Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 0.9(Max) 0.9(Max) 0.9(Max) 0.9(Max) 0.9(Max)
Package Length 2.9 2.9 2.9 2.9 2.9
Package Width 1.75(Max) 1.75(Max) 1.75(Max) 1.75(Max) 1.75(Max)
PCB changed 6 6 6 6 6
Lead Shape Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing
HTS 8542.39.00.01 8542.39.00.01 - 8542.39.00.01 8542.39.00.01
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