datasheet
EEWORLDEEWORLDEEWORLD
Datasheet
Part Number

Keyword

Search
Keyword

Part Number

Search
Datasheet> All Categories > Power/power management> The power supply circuit> LTC1539IGW#TR
PDF
Preview

LTC1539IGW#TR

Description
Switching Voltage Regulators LTC1539 - Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators
CategoryPower/power management    The power supply circuit   
File Size337KB，32 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric Compare View All

LTC1539IGW#TR Overview

Switching Voltage Regulators LTC1539 - Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators

LTC1539IGW#TR Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerADI
Reach Compliance Codenot_compliant
control modeCURRENT-MODE
JESD-30 codeR-PDSO-G36
JESD-609 codee0
Number of terminals36
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeSSOP
Encapsulate equivalent codeSOP36,.4,32
Package shapeRECTANGULAR
Package formSMALL OUTLINE, SHRINK PITCH
Certification statusNot Qualified
surface mountYES
Maximum switching frequency138 kHz
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch0.8 mm
Terminal locationDUAL

Preview

Download Datasheet
FEATURES
s
s
s
s
s
s
s
LTC1538-AUX/LTC1539
Dual High Efficiency,
Low Noise, Synchronous
Step-Down Switching Regulators
DESCRIPTION
The LTC
®
1538-AUX/LTC1539 are dual, synchronous step-
down switching regulator controllers which drive external
N-channel power MOSFETs in a phase-lockable fixed
frequency architecture. The Adaptive Power
TM
output stage
selectively drives two N-channel MOSFETs at frequencies
up to 400kHz while reducing switching losses to maintain
high efficiencies at low output currents.
An auxiliary 0.5A linear regulator using an external PNP
pass device provides a low noise, low dropout voltage
source. A secondary winding feedback control pin (SFB1)
guarantees regulation regardless of load on the main
output by forcing continuous operation.
A 5V/20mA regulator, internal 1.19V reference and an
uncommitted comparator remain active when both con-
trollers are shut down. A power-on reset timer (POR) is
included which generates a signal delayed by 65536/f
CLK
(typ 300ms) after the controller’s output is within 5% of
the regulated first voltage. Internal resistive dividers pro-
vide pin selectable output voltages with remote sense
capability on one of the two outputs.
The operating current levels are user-programmable via
external current sense resistors. Wide input supply range
allows operation from 3.5V to 30V (36V maximum).
, LTC and LT are registered trademarks of Linear Technology Corporation.
Adaptive Power is a trademark of Linear Technology Corporation.
s
s
s
s
s
s
s
s
s
Maintains Constant Frequency at Low Output Currents
Dual N-Channel MOSFET Synchronous Drive
Programmable Fixed Frequency (PLL Lockable)
Wide V
IN
Range: 3.5V to 36V Operation
Ultrahigh Efficiency
Very Low Dropout Operation: 99% Duty Cycle
Low Dropout, 0.5A Linear Regulator for VPP
Generation or Low Noise Audio Supply
Built-In Power-On Reset Timer
Programmable Soft Start
Low-Battery Detector
Remote Output Voltage Sense
Foldback Current Limiting (Optional)
Pin Selectable Output Voltage
5V Standby Regulator Active in Shutdown: I
Q
< 200µA
Output Voltages from 1.19V to 9V
Available in 28- and 36-Lead SSOP Packages
APPLICATIONS
s
s
s
s
Notebook and Palmtop Computers, PDAs
Portable Instruments
Battery-Operated Devices
DC Power Distribution Systems
TYPICAL APPLICATION
D
B1
, CMDSH-3
BOOST 1
M1
L1
10µH
D1
MBR140T3
M3*
C
B1
0.1µF
M2
TGL1
TGS1
SW1
BG1
SENSE 1
R
SENSE1
0.03Ω
V
OUT1
5V
3.5A
1000pF
C
C1
1000pF
C
C1A
220pF
SENSE
–
1
I
TH1
RUN/SS1
R
C1
10k
C
SS1
0.1µF
C
DSC
V
PROG2
C
OSC
56pF
SGND
V
OSENSE2
I
TH2
PGND RUN/SS2
C
SS2
0.1µF
+
5V STANDBY
D
B2
, CMDSH-3
V
PROG1
V
IN
INTV
CC
BOOST 2
TGL2
TGS2
SW2
BG2
LTC1539
SENSE
+
2
SENSE
–
2
1000pF
R
SENSE2
0.03Ω
V
OUT2
3.3V
3.5A
C
C2A
470pF
C
B2
, 0.1µF
M5
M6*
M4
L2
10µH
D2
MBR140T3
+
+
C
OUT1
220µF
10V
M1, M2, M4, M5: Si4412DY
C
C2
1000pF
R
C2
10k
M3, M6: IRLML2803
*NOT REQUIRED FOR LTC1538-AUX
BOLD LINES INDICATE HIGH CURRENT PATHS
Figure 1. High Efficiency Dual 5V/3V Step-Down Converter
U
U
U
4.7µF
16V
+
V
IN
C
IN
5.2V TO 28V
22µF
35V
×
4
+
1538 F01
C
OUT
220µF
10V
1

LTC1539IGW#TR Related Products

LTC1539IGW#TR LTC1538IG-AUX#TR LTC1538CG-AUX#TRPBF LTC1539IGW#PBF LTC1538IG-AUX#PBF LTC1539IGW#TRPBF LTC1538CG-AUX#TR LTC1539CGW#TR LTC1538CG-AUX#PBF LTC1538IG-AUX#TRPBF
Description Switching Voltage Regulators LTC1539 - Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators Switching Voltage Regulators LTC1538-AUX - Dual High Efficiency,Low Noise, Synchronous Step-Down Switching Regulators Switching Voltage Regulators Dual Const Freq Syn Sw Reg Cntrl Switching Voltage Regulators Dual Const Freq Syn Sw Reg Cntrl Switching Voltage Regulators Dual Const Freq Syn Sw Reg Cntrl Switching Voltage Regulators Dual Const Freq Syn Sw Reg Cntrl Switching Voltage Regulators LTC1538-AUX - Dual High Efficiency,Low Noise, Synchronous Step-Down Switching Regulators Switching Regulator LTC1539 - Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators Switching Regulator Dual Const Freq Syn Sw Reg Cntrl Switching Regulator Dual Const Freq Syn Sw Reg Cntrl
Is it Rohs certified? incompatible incompatible conform to conform to conform to conform to incompatible incompatible conform to conform to
Maker ADI ADI ADI ADI ADI ADI ADI ADI ADI ADI
Reach Compliance Code not_compliant not_compliant compliant compliant compliant compliant not_compliant not_compliant compliant compliant
control mode CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE
JESD-30 code R-PDSO-G36 R-PDSO-G28 R-PDSO-G28 R-PDSO-G36 R-PDSO-G28 R-PDSO-G36 R-PDSO-G28 R-PDSO-G36 R-PDSO-G28 R-PDSO-G28
JESD-609 code e0 e0 e3 e3 e3 e3 e0 e0 e3 e3
Number of terminals 36 28 28 36 28 36 28 36 28 28
Maximum operating temperature 85 °C 85 °C 70 °C 85 °C 85 °C 85 °C 70 °C 70 °C 70 °C 85 °C
Minimum operating temperature -40 °C -40 °C - -40 °C -40 °C -40 °C - - - -40 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SSOP SSOP SSOP SSOP SSOP SSOP SSOP SSOP SSOP SSOP
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH SMALL OUTLINE, SHRINK PITCH
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
surface mount YES YES YES YES YES YES YES YES YES YES
Maximum switching frequency 138 kHz 138 kHz 400 kHz 400 kHz 400 kHz 400 kHz 400 kHz 400 kHz 400 kHz 138 kHz
technology CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS CMOS
Temperature level INDUSTRIAL INDUSTRIAL COMMERCIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL COMMERCIAL COMMERCIAL COMMERCIAL INDUSTRIAL
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Matte Tin (Sn) MATTE TIN MATTE TIN Matte Tin (Sn) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) MATTE TIN Matte Tin (Sn)
Terminal form GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING GULL WING
Terminal pitch 0.8 mm 0.635 mm 0.65 mm 0.8 mm 0.65 mm 0.8 mm 0.65 mm 0.8 mm 0.65 mm 0.635 mm
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL
Brand Name - - Analog Devices Inc Analog Devices Inc Analog Devices Inc Analog Devices Inc - - Analog Devices Inc Analog Devices Inc
Is it lead-free? - - Contains lead Contains lead Contains lead Contains lead - - Contains lead Contains lead
package instruction - - SSOP, SSOP, SSOP, SSOP, SSOP, SSOP, SSOP, SSOP, SSOP28,.3
Contacts - - 28 36 28 36 - - 28 28
Manufacturer packaging code - - 05-08-1640 (G28) 05-08-1642 (GW36) 05-08-1640 (G28) 05-08-1642 (GW36) - - 05-08-1640 (G28) 05-08-1640 (G28)
Analog Integrated Circuits - Other Types - - SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER SWITCHING CONTROLLER -
Control Technology - - PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION -
Maximum input voltage - - 36 V 36 V 36 V 36 V 36 V 36 V 36 V -
Minimum input voltage - - 3.5 V 3.5 V 3.5 V 3.5 V 3.5 V 3.5 V 3.5 V -
Nominal input voltage - - 15 V 15 V 15 V 15 V 15 V 15 V 15 V -
length - - 10.2 mm 15.4 mm 10.2 mm 15.4 mm 10.2 mm 15.4 mm 10.2 mm -
Humidity sensitivity level - - 1 1 1 1 1 1 1 1
Number of functions - - 1 1 1 1 1 1 1 -
Maximum output current - - 2 A 2 A 2 A 2 A 2 A 2 A 2 A -
Nominal output voltage - - 5 V 5 V 5 V 5 V 5 V 5 V 5 V -
Peak Reflow Temperature (Celsius) - - 260 260 260 260 235 235 260 -
Maximum seat height - - 2 mm 2.65 mm 2 mm 2.65 mm 2 mm 2.65 mm 2 mm -
Switch configuration - - PUSH-PULL PUSH-PULL PUSH-PULL PUSH-PULL PUSH-PULL PUSH-PULL PUSH-PULL -
Maximum time at peak reflow temperature - - 30 30 30 NOT SPECIFIED 20 20 30 -
width - - 5.3 mm 7.5 mm 5.3 mm 7.5 mm 5.3 mm 7.5 mm 5.3 mm -

Recommended Resources

vehicle alarm circuit

Heavy load starting thermal relay protection circuit 2

Transistor and gate protection circuit

Voice control recording circuit

Ringing transmission and writing control circuit diagram

Neon light drive circuit

New courses are online at the beginning of the school year! Learn the latest TI training courses and win gifts
[size=4][b]Students, TI training has a new course! [/b][/size] [size=3][backcolor=yellow]2019.3.1 – 3.31[/backcolor][/size][size=3], anyone who watches the latest TI training course and takes a screen...
EE大学堂 TI Technology Forum
After reviewing ten wireless sports Bluetooth headsets, I will teach you how to buy headsets under 300 yuan
Now people are becoming more and more rational about buying electronic products such as mobile phones. Many people will read other people's evaluation articles before buying them. The same is true for...
柔情e似水 TI Technology Forum
This week's highlights
[b][font=微软雅黑][size=4][url=https://e2echina.ti.com/blogs_/b/behindthewheel/archive/2018/06/25/ti-dlp-q-amp-a]TI DLP Technology’s Innovative Applications in the Automotive Industry – Enhanced Head-Up D...
橙色凯 TI Technology Forum
When encountering refurbished chips again, how to identify new and old chips?
Having been cheated countless times has given me a keen eye, and I can tell whether a refurbished chip is real or fake as soon as I get it. This is the DS90C124 I bought from Taobao. The seller descri...
littleshrimp Integrated technical exchanges
Brushless motor MOS
Hi experts, I am looking for a 600V 5A TO-252 package MOS with an internal resistance of about 300 mA. Do you have any recommendations? Imported ones are preferred. Welcome to leave a message to help....
lingliao Motor Drive Control（Motor Control）
[Routine experience of Flathead RVB2601 development board] Part 1: Download the example program successfully, sharing experience!
1. Introduction I had just received the board and set up the development environment, but was stuck at the step of downloading the program. I felt that there were some problems when installing the dev...
w494143467 XuanTie RISC-V Activity Zone
Shortcut:   E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF EG EH EI EJ EK EL EM EN EO EP EQ ER ES ET EU EV EW EX EY EZ F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF FG FH FI FJ FK FL FM FN FO FP FQ FR FS FT FU FV FW FX FY FZ G0 G1 G2 G3 G4 G5 G6 G7 G8 G9 GA GB GC GD GE GF GG GH GI GJ GK GL GM GN GO GP GQ GR GS GT GU GV GW GX GZ H0 H1 H2 H3 H4 H5 H6 H7 H8 HA HB HC HD HE HF HG HH HI HJ HK HL HM HN HO HP HQ HR HS HT HU HV HW HX HY HZ I1 I2 I3 I4 I5 I6 I7 IA IB IC ID IE IF IG IH II IK IL IM IN IO IP IQ IR IS IT IU IV IW IX J0 J1 J2 J6 J7 JA JB JC JD JE JF JG JH JJ JK JL JM JN JP JQ JR JS JT JV JW JX JZ K0 K1 K2 K3 K4 K5 K6 K7 K8 K9 KA KB KC KD KE KF KG KH KI KJ KK KL KM KN KO KP KQ KR KS KT KU KV KW KX KY KZ

Popular Components

  1. 7916U84CTA
  2. AL0355-111-JB
  3. FHW0805UF1R0KST
  4. QS74FCT2543ATQB
  5. SMN16BS-821-JBW
  6. SM006M1000A7SQ1012
  7. M55342E03B124BC-W
  8. Y002451K0000C19L
  9. BZX784C3V0
  10. 1SMB5938T/R7
  11. ZMM55-C20_R2_10001
  12. 1N4714_AY_10001

Popular Articles

  1. Intel X86 and ARM's battle for the "architecture king"
  2. Isolation of SAR ADCs
  3. High-Performance Power Semiconductor Company MPS Gains Momentum and Is Included in the S&P 500 Index
  4. tiny4412 learning (Part 3) porting linux-4.x driver (1) supporting network card driver
  5. The difference between loop resistance tester and DC resistance tester
  6. Domestic companies have mass-produced 5G radio frequency chips: can be used in mobile phones
  7. Samsung Exynos 2200 4nm chip preview: CPU performance improvement is limited
  8. CATL wins another victory! Increase investment in negative electrode material "Rising Star" and hold 35% of shares!
  9. Why is control-by-wire technology a prerequisite for autonomous driving?
  10. Optical liquid analysis prototyping platform points the way to ubiquitous testing

Technical ResourceMore

  1. Introduction to GUDA Level Meter (GUDA 2012)
  2. PN code technology of CDMA system
  3. Implementation of Ukkon algorithm for suffix tree
  4. Design of LED dot matrix display screen control system based on at89s52 single chip microcomputer
  5. Eight Queens Complete Code! Show Image
  6. The salience distance transform incorporates edge strength information into the distance transform.
  7. Self-made 3D connector package library: Pin-Header-2.00-Double-4.SLDPRT
  8. VRS51L3074 pdf datasheet (High-Performance 8051 MCU + 8KB FRAM)
  9. Design of In-Circuit Emulator (ICE) Module in DSP Processor
  10. Common algorithms in embedded system software design (full version).

ForumMore

  1. After reviewing ten wireless sports Bluetooth headsets, I will teach you how to buy headsets under 300 yuan
  2. This week's highlights
  3. When encountering refurbished chips again, how to identify new and old chips?
  4. Brushless motor MOS
  5. [Routine experience of Flathead RVB2601 development board] Part 1: Download the example program successfully, sharing experience!
  6. Request CKS32F103 information
  7. Zener diode parameter explanation
  8. How are the engineers in Hubei and Wuhan doing during this epidemic?
  9. Labor and technology classes are back. From September, primary and secondary school students will learn to cook, grow vegetables, repair home appliances, etc.
  10. Why choose voltage mode control for fixed frequency pulse width modulation of power supply?

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

About Us Customer Service Contact Information Datasheet Sitemap LatestNews
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2024 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号