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LT1534IS

Description
2 A SWITCHING REGULATOR, 250 kHz SWITCHING FREQ-MAX, PDSO16
CategoryPower/power management    The power supply circuit   
File Size227KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Related ProductsFound4parts with similar functions to LT1534IS
Download Datasheet Parametric Compare View All

LT1534IS Overview

2 A SWITCHING REGULATOR, 250 kHz SWITCHING FREQ-MAX, PDSO16

LT1534IS Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?incompatible
MakerLinear ( ADI )
Parts packaging codeSOIC
package instructionSOP, SOP16,.25
Contacts16
Manufacturer packaging codeS
Reach Compliance Code_compli
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage23 V
Minimum input voltage2.7 V
Nominal input voltage5 V
JESD-30 codeR-PDSO-G16
JESD-609 codee0
length9.906 mm
Humidity sensitivity level1
Number of functions1
Number of terminals16
Maximum operating temperature125 °C
Minimum operating temperature-40 °C
Maximum output current2 A
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP16,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)235
Certification statusNot Qualified
Maximum seat height1.752 mm
surface mountYES
Switch configurationBOOST
Maximum switching frequency250 kHz
technologyBIPOLAR
Temperature levelAUTOMOTIVE
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
width3.899 mm
LT1534/LT1534-1
Ultralow Noise
2A Switching Regulators
FEATURES
s
s
s
DESCRIPTIO
s
s
s
s
s
s
s
Greatly Reduced Conducted and Radiated EMI
Low Switching Harmonic Content
Independent Control of Switch Voltage and
Current Slew Rates
2A Current Limited Power Switch
Regulates Positive and Negative Voltages
20kHz to 250kHz Oscillator Frequency
Easily Synchronized to External Clock
Wide Input Voltage Range: 2.7V to 23V
Low Shutdown Current: 12µA Typical
Easier Layout than with Conventional Switchers
APPLICATIO S
s
s
s
s
s
Precision Instrumentation Systems
Isolated Supplies for Industrial Automation
Medical Instruments
Wireless Communications
Single Board Data Acquisition Systems
The LT
®
1534/LT1534-1 are a new class of switching regula-
tor designed to reduce conducted and radiated electromag-
netic interference (EMI). Ultralow noise and EMI are achieved
by providing user control of the output switch slew rates.
Voltage and current slew rates can be independently pro-
grammed to optimize switcher harmonic content versus
efficiency. The LT1534/LT1534-1 can reduce high frequency
harmonic power by as much as 40dB with only minor losses
in efficiency.
The LT1534/LT1534-1 utilize a current mode architecture
optimized for low noise boost topologies. The ICs include a
2A power switch along with all necessary oscillator, control
and protection circuitry. Unique error amp circuitry can
regulate both positive and negative voltages. The internal
oscillator may be synchronized to an external clock for more
accurate placement of switching harmonics. Protection fea-
tures include cycle-by-cycle current limit protection, under-
voltage lockout and thermal shutdown.
Low minimum supply voltage and low supply current during
shutdown make the LT1534/LT1534-1 well suited for por-
table applications. The LT1534/LT1534-1 are available in the
16-pin narrow SO package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATION
3.3V
L1
50µH
1N5817
A
L3
50µH
C1
47µF
6.3V
×2
B
+
C
IN
33µF
6.3V
15
12
4
SHDN
SYNC
PGND
LT1534-1
R
VSL
R
T
R
CSL
11
V
C
GND
1,8,
9,16
NFB
FB
3
14
13
7
2.49k
24k
24k
V
IN
COL
2
10Ω
+
L2
1nF
+
OPTIONAL
5V
650mA
C2
47µF
3300pF
5
16.9k 6
C
T
A
50mV/DIV
7.5k
1534 TA01
220pF
6.8k
15nF
10
C
IN
: MATSUSHITA ECGCOJB330
C1, C2: MATSUSHITA ECGCOJB47O
L1, L3: COILTRONICS CTX50-4
L2: COILCRAFT B08T (28nH) OR PC TRACE
B
2mV/DIV
Figure 1. Low Noise 3.3V to 5V Boost Converter
U
5V Output Noise (BW = 100MHz)
10µs/DIV
1534 TA02
U
U
1

LT1534IS Related Products

LT1534IS LT1534IS-1 LT1534I LT1534CS-1 LT1534CS LT1534C LT1534-1 LT1534
Description 2 A SWITCHING REGULATOR, 250 kHz SWITCHING FREQ-MAX, PDSO16 2 A SWITCHING REGULATOR, 250 kHz SWITCHING FREQ-MAX, PDSO16 2 A SWITCHING REGULATOR, 250 kHz SWITCHING FREQ-MAX, PDSO16 2 A SWITCHING REGULATOR, 250 kHz SWITCHING FREQ-MAX, PDSO16 2 A SWITCHING REGULATOR, 250 kHz SWITCHING FREQ-MAX, PDSO16 2 A SWITCHING REGULATOR, 250 kHz SWITCHING FREQ-MAX, PDSO16 2 A SWITCHING REGULATOR, 250 kHz SWITCHING FREQ-MAX, PDSO16 2 A SWITCHING REGULATOR, 250 kHz SWITCHING FREQ-MAX, PDSO16
control mode CURRENT-MODE CURRENT-MODE PEAK CURRENT CURRENT-MODE CURRENT-MODE PEAK CURRENT PEAK CURRENT PEAK CURRENT
Control Technology PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION
Number of functions 1 1 1 1 1 1 1 1
Number of terminals 16 16 16 16 16 16 16 16
Maximum operating temperature 125 °C 125 °C 125 Cel 125 °C 125 °C 125 Cel 125 Cel 125 Cel
Minimum operating temperature -40 °C -40 °C 0.0 Cel - - 0.0 Cel 0.0 Cel 0.0 Cel
Maximum output current 2 A 2 A 2 A 2 A 2 A 2 A 2 A 2 A
surface mount YES YES Yes YES YES Yes Yes Yes
Switch configuration BOOST BOOST BOOST BOOST BOOST BOOST BOOST BOOST
Maximum switching frequency 250 kHz 250 kHz 250 kHz 250 kHz 250 kHz 250 kHz 250 kHz 250 kHz
Temperature level AUTOMOTIVE AUTOMOTIVE OTHER OTHER OTHER OTHER OTHER OTHER
Terminal form GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL

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