LT3593ES6#PBF Linear Technology, LT3593ES6#PBF Datasheet

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LT3593ES6#PBF

Manufacturer Part Number
LT3593ES6#PBF
Description
Manufacturer
Linear Technology
Datasheet

Specifications of LT3593ES6#PBF

Operating Supply Voltage (typ)
3.3/5V
Number Of Segments
10
Operating Temperature (min)
-40C
Operating Temperature (max)
85C
Operating Temperature Classification
Industrial
Package Type
TSOT-23
Pin Count
6
Mounting
Surface Mount
Operating Supply Voltage (min)
2.7V
Operating Supply Voltage (max)
5.5V
Lead Free Status / Rohs Status
Compliant

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Quantity
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LT
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Part Number:
LT3593ES6#PBF
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Part Number:
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Manufacturer:
LINEAR/凌特
Quantity:
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FEATURES
APPLICATIONS
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TYPICAL APPLICATION
Drives Up to Ten White LEDs from a 3V Supply
One Pin Shutdown and Current Programming
LEDs Disconnected in Shutdown
32:1 Linear Brightness Control Range
V
±5% Output Current Accuracy at Full Scale
Low Shutdown Current: 3μA
1MHz Switching Frequency
Requires Only 1μF Output Capacitor
Low Profi le 6-Lead DFN (2mm × 2mm × 0.75mm)
and 6-Lead SOT-23 Packages
Cell Phones
Digital Cameras
PDAs, Handheld Computers
MP3 Players
GPS Receivers
IN
CURRENT CONTROL
3V TO 5V
Range: 2.7V to 5.5V
SHUTDOWN AND
V
IN
Li-Ion Driver for Ten White LEDs
1μF
CTRL
V
IN
LT3593
10μH
GND
SW
CAP
LED
3593 TA01a
1μF
Output Disconnect and One
1MHz White LED Driver with
DESCRIPTION
The LT
drive up to ten white LEDs in series from a Li-Ion cell.
Series connection of the LEDs provides identical LED
currents and eliminates the need for ballast resistors. The
device features a unique high side LED current sense that
enables the part to function as a “one wire current source”
where the low side of the LED string can be returned to
ground anywhere.
Additional features include output disconnect in shutdown,
open LED protection and 1-pin shutdown/LED current
control. The CTRL pin is toggled to adjust the LED current
via an internal counter and a 5-bit DAC.
The LT3593 switches at 1MHz, allowing the use of tiny
external components. Constant frequency switching re-
sults in low input noise and a small output capacitor. The
LT3593 is available in the 6-lead DFN (2mm × 2mm) as
well as the 6-lead SOT-23 packages.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Pin Current Programming
®
3593 is a step-up DC/DC converter designed to
90
80
70
60
50
40
30
0
V
10 LEDs
IN
= 3.6V
Conversion Effi ciency
5
LED CURRENT (mA)
10
15
3593 TA01b
LT3593
20
1
3593f

Related parts for LT3593ES6#PBF

LT3593ES6#PBF Summary of contents

Page 1

... The LT3593 is available in the 6-lead DFN (2mm × 2mm) as well as the 6-lead SOT-23 packages. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. 90 ...

Page 2

... LEAD FREE FINISH TAPE AND REEL LT3593EDC#PBF LT3593EDC#TRPBF LT3593ES6#PBF LT3593ES6#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: For more information on tape and reel specifi ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER Switch Leakage Current LED Pin Voltage Drop (V – CAP LED LED Pin Leakage Current CTRL High Threshold CTRL Low Threshold CTRL t PW CTRL t SD ...

Page 4

LT3593 TYPICAL PERFORMANCE CHARACTERISTICS Switch Saturation Voltage (V ) CESAT 600 500 100°C 400 25°C 300 –50°C 200 100 0 0 100 200 300 400 500 SWITCH CURRENT (mA) 3593 G01 LED Pin Voltage Drop (V – CAP ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS Open-Circuit Output Clamp Voltage 40 39 25°C 100°C 38 –50° (V) IN 3593 G09 Input Current in Output Open-Circuit vs Temperatue 3. ...

Page 6

LT3593 PIN FUNCTIONS (DFN/TSOT) V (Pin 1/Pin 3): Input Supply Pin. Must be locally by- IN passed with a 1μF X5R or X7R type ceramic capacitor. GND (Pin 2/Pin 2): Ground Pin. Connect directly to local ground plane. SW (Pin ...

Page 7

OPERATION The LT3593 uses a constant frequency, current mode control boost scheme to provide excellent line and load regulation. Operation can be best understood by referring to the Block Diagram in Figure 1. Output Disconnect An internal switch connects between ...

Page 8

LT3593 APPLICATIONS INFORMATION Inductor Selection A 10μH inductor is recommended for most LT3593 ap- plications. Although small size and high effi ciency are major concerns, the inductor should have low core losses at 1MHz and low DCR (copper wire resistance). ...

Page 9

APPLICATIONS INFORMATION Overvoltage Protection The LT3593 has an internal open-circuit protection circuit. In the case of an output open circuit, when the LEDs are disconnected from the circuit or the LEDs fail open clamped at 38V. The LT3593 ...

Page 10

LT3593 APPLICATIONS INFORMATION Board Layout Considerations As with all switching regulators, careful attention must be paid to the PCB layout and component placement. To prevent electromagnetic interference (EMI) problems, proper layout of high frequency switching paths is essential. Minimize the ...

Page 11

TYPICAL APPLICATIONS Li-Ion Driver for One White LED L1 10μ 1μ LT3593 SHUTDOWN AND CTRL CURRENT CONTROL GND C1: TAIYO YUDEN EMK107BJ105MA C2: TAIYO YUDEN GMK316BJ105ML L1: MURATA LQH43CN100 D1: CENTRAL CMDSH05-4 ...

Page 12

LT3593 TYPICAL APPLICATIONS Li-Ion Driver for Three White LEDs L1 10μ 1μ CAP LT3593 SHUTDOWN AND CTRL LED CURRENT CONTROL GND C1: TAIYO YUDEN EMK107BJ105MA C2: TAIYO YUDEN GMK316BJ105ML L1: MURATA ...

Page 13

TYPICAL APPLICATIONS Li-Ion Driver For Ten White LEDs L1 10μ 1μ CAP LT3593 SHUTDOWN AND CTRL LED CURRENT CONTROL GND C1: TAIYO YUDEN EMK107BJ105MA C2: MURATA GRM31MR71H105KA88 L1: MURATA LQH43CN100 D1: ...

Page 14

LT3593 PACKAGE DESCRIPTION 2.50 ±0.05 0.61 ±0.05 1.15 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS PIN 1 BAR TOP MARK (SEE NOTE Package 6-Lead Plastic DFN (2mm × 2mm) (Reference LTC DWG # 05-08-1703) 0.675 ...

Page 15

... MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. S6 Package ...

Page 16

... Dual 1.3A White LED Converter with 1000:1 True Color PWM Dimming LT3491 White LED Driver with Integrated Schottky LT3591 White LED Driver with Integrated Schottky ThinSOT is a trademark of Linear Technology Corporation. Linear Technology Corporation 16 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● ...

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