EEWORLDEEWORLDEEWORLD

Part Number

Search

LTC1735IS-1#TRPBF

Description
IC REG CTRLR BUCK 16SOIC
CategoryPower/power management    The power supply circuit   
File Size341KB,28 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Environmental Compliance
Download Datasheet Parametric View All

LTC1735IS-1#TRPBF Overview

IC REG CTRLR BUCK 16SOIC

LTC1735IS-1#TRPBF Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?conform to
Parts packaging codeSOIC
package instructionSOP, SOP16,.25
Contacts16
Manufacturer packaging codeS
Reach Compliance Codecompliant
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage36 V
Minimum input voltage3.5 V
Nominal input voltage15 V
JESD-30 codeR-PDSO-G16
JESD-609 codee3
length9.9 mm
Humidity sensitivity level1
Number of functions1
Number of terminals16
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Maximum output current3 A
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP16,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height1.75 mm
surface mountYES
Switch configurationPUSH-PULL
Maximum switching frequency550 kHz
technologyCMOS
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width3.9 mm
Base Number Matches1
FEATURES
s
s
s
s
s
s
s
s
s
s
s
LTC1735-1
High Efficiency
Synchronous Step-Down
Switching Regulator
DESCRIPTIO
The LTC
®
1735-1 is a synchronous step-down switching
regulator controller optimized for CPU power. OPTI-LOOP
compensation allows the transient response to be opti-
mized over a wide range of output capacitance and ESR
values.
The operating frequency (synchronizable up to 500kHz) is
set by an external capacitor allowing maximum flexibility
in optimizing efficiency. The output voltage is monitored
by a power good window comparator that indicates when
the output is within 7.5% of its programmed value, con-
forming to Intel Mobile CPU Specifications.
Protection features include internal foldback current lim-
iting, output overvoltage crowbar and optional short-
circuit shutdown. Soft-start is provided by an external
capacitor that can be used to properly sequence supplies.
The operating current level is user-programmable via an
external current sense resistor. Wide input supply range
allows operation from 3.5V to 30V (36V maximum).
Pin defeatable Burst Mode
TM
operation provides high
efficiency at low load currents while 99% duty cycle
provides low dropout operation.
s
s
s
s
Dual N-Channel MOSFET Synchronous Drive
Programmable/Synchronizable Fixed Frequency
V
OUT
Range: 0.8V to 7V
Wide V
IN
Range: 3.5V to 36V Operation
Very Low Dropout Operation: 99% Duty Cycle
OPTI-LOOP
TM
Compensation Minimizes C
OUT
±
1% Output Voltage Accuracy
Power Good Output Voltage Monitor
Internal Current Foldback
Output Overvoltage Crowbar Protection
Latched Short-Circuit Shutdown Timer
with Defeat Option
Optional Programmable Soft-Start
Remote Output Voltage Sense
Logic Controlled Micropower Shutdown: I
Q
< 25µA
Available in 16-Lead Narrow SSOP and SO Packages
APPLICATIO S
s
s
s
Notebook and Palmtop Computers, PDAs
Power Supply for Mobile Pentium
®
III Processor with
SpeedStep
TM
Technology
Cellular Telephones and Wireless Modems
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode and OPTI-LOOP are trademarks of Linear Technology Corporation.
Pentium is a registered trademark of Intel Corporation. SpeedStep is a trademark of Intel
Corporation.
TYPICAL APPLICATIO
PGOOD
C
OSC
47pF
C
SS
0.1µF
C
C2
330pF
R
C1
33k
C
C1
47pF
1
2
3
4
5
47pF
1000pF 6
7
8
V
IN
4.5V TO 24V
C
OSC
RUN/SS
I
TH
TG
BOOST
SW
V
IN
INTV
CC
BG
PGND
EXTV
CC
10Ω
10Ω
16
15
14
13
12
11
10
9
5V
(OPTIONAL)
D1
CMDSH-3
C
B
0.22µF
Q1
FDS6680A
L1
1.2µH
D2
MBRS340T3
Q2, Q3
FDS6680A
×2
C
IN
22µF
50V
CERAMIC
×2
R
SENSE
0.004Ω
LTC1735-1
PGOOD
SENSE
SENSE
+
V
OSENSE
SGND
+
4.7µF
Figure 1. CPU Core DC/DC Converter with Dynamic Voltage Selection from SpeedStep Enabled Processors
U
U
U
C
IN
: MARCON THCR70E1H226ZT
C
OUT
: PANASONIC EEFUE06181R
L1: PANASONIC ETQP6RZ1R20HFA
R
SENSE
: IRC CRF2010-01-R004J
V
OUT
1.35V TO 1.60V
12A
C
OUT
180µF
4V
PANASONIC SP
×4
V
SEL
= 1: V
OUT
= 1.60V
V
SEL
= 0: V
OUT
= 1.35V
GND
1735-1 F01
47pF
R1
10k
0.5%
+
47pF
R2
14.3k
0.5%
R3
33.2k
1%
Q4
2N7002
1
I didn't understand it after reading the book. Can you tell me about Timer_A?
When I was looking at Timer_A, I saw an example in the book that said, "Let ACLK = TACLK = 32768Hz, MCLK = SMCLK = DCOCLK = 1.048576MHz, andperiodically invert P5.1 to generate a square wave with a fr...
林hh Microcontroller MCU
Ask Xiang Bangzhu --- Large page NAND connected to 103ZET6 problem
I changed the program of small page to large page, and it can only read and write one page correctly. The later one doesn't work.The chip is K9F1G08UOA.//Header file FSMC_NAND.H#ifndef __FSMC_NAND_H#d...
chouxiaoya51 stm32/stm8
Digital filter design based on dsp builder
Version: MATLAB2007a QuartusⅡ7.2SP1 dsp builder7.2SP1 I first made a DDS, and the parameters and modules were designed according to the book "Modern DSP Technology", but in the end I didn't get the de...
hfrobot MCU
What do the three color rings on the TOP SOLDER layer mean from inside to outside?
What do the three color rings (1), (2), and (3) on the TOP SOLDER layer of a PAD (as shown in the figure below) mean? Isn't the solder layer used to make steel mesh? Isn't one color ring enough? Why d...
一沙一世 stm32/stm8
I would like to ask an expert, how can I remove the solder layer on the pad and expose the copper skin?
I would like to ask an expert, when using AD to draw a PCB board, how should I set it up to remove the solder layer on the pad and expose the copper skin?...
wendong0825 PCB Design
How to choose TVS tube for MSP430FR2633 touch chip
TI's touch chip MSP430FR2633 touch solution can support proximity sensing. Generally, the proximity sensing PCB Sensor will be placed close to the machine casing. Antistatic testing will be performed ...
fish001 Microcontroller MCU

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 440  203  2165  324  2367  9  5  44  7  48 
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 © 2005-2026 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