datasheet
EEWORLDEEWORLDEEWORLD
Datasheet
Part Number

Keyword

Search
Keyword

Part Number

Search
Datasheet> All Categories > LT3688EUF#TRPBF
PDF
Preview

LT3688EUF#TRPBF

Description
Conv DC-DC 3.8V to 36V Step Down Dual-Out 0.8V to 32.4V 0.8A/0.8A Automotive 24-Pin QFN EP T/R
File Size419KB，28 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric Compare View All

LT3688EUF#TRPBF Overview

Conv DC-DC 3.8V to 36V Step Down Dual-Out 0.8V to 32.4V 0.8A/0.8A Automotive 24-Pin QFN EP T/R

LT3688EUF#TRPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
TypeStep Down
Output TypeAdjustable
Switching Frequency (kHz)350 to 2200
Switching RegulatorYes
Number of Outputs2
Output Voltage (V)0.8 to 32.4
Maximum Output Current (A)0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8
Minimum Input Voltage (V)3.8
Maximum Input Voltage (V)36
Operating Supply Voltage (V)3.8 to 36
Typical Quiescent Current (uA)235
Line Regulation0.002%/V(Typ)
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)125
Supplier Temperature GradeExtended
PackagingTape and Reel
Supplier PackageQFN EP
Pin Count24
Standard Package NameQFN
MountingSurface Mount
Package Height0.75(Max)
Package Length4
Package Width4
PCB changed24
Lead ShapeNo Lead

Preview

Download Datasheet
FEATURES
n
n
n
n
n
n
n
n
LT3688
Dual 800mA Step-Down
Switching Regulator with
Power-On Reset and
Watchdog Timer
DESCRIPTION
The LT
®
3688 is an adjustable frequency (350kHz to
2.2MHz) dual monolithic step-down switching regulator
with two power-on reset timers and a watchdog timer.
The regulator operates off inputs up to 36V. Low ripple
Burst Mode
®
operation maintains high efficiency at low
output current while keeping output ripple below 25mV in
a typical application, with input quiescent current of just
115μA. Shutdown circuitry reduces input supply current
to less than 1μA while EN/UVLO is pulled low.
The reset and watchdog timeout periods are both adjust-
able using external capacitors. Tight accuracy specifica-
tions and glitch immunity ensure reliable reset operation
without false triggering. The open collector
RST
pins will
pull down if the monitored output voltage drops 10%
below the programmed value. The LT3688 watchdog timer
monitors for watchdog falling edges grouped too close
together or too far apart.
The LT3688 is available in 24-Pin TSSOP and 4mm
×
4mm QFN packages, each with an exposed pad for low
thermal resistance.
Wide Input Range:
Operation from 3.8V to 36V
Low Ripple (<25mV
P-P
) Burst Mode Operation:
I
Q
= 115μA at 12V
IN
to 3.3V and 5V
Programmable, Defeatable Window Watchdog Timer
Two Independently Programmable Power-On-Reset
Timers
Synchronizable, Adjustable 350kHz-2.2MHz
Switching Frequency
Two 800mA Output Switching Regulators with Internal
Power Switches
Programmable Input Undervoltage Lockout with
Hysteresis
Thermally Enhanced 24-Pin TSSOP and 4mm
×
4mm
QFN Packages
APPLICATIONS
n
n
n
Automotive Electronic Control Units
Industrial Power Supplies
High-Reliability μProcessor Systems
L,
LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners.
TYPICAL APPLICATION
5V and 3.3V Regulator with Power-On Reset and Watchdog Timers
V
IN
6V TO 36V
Efficiency
90
V
IN
= 12V
V
OUT
= 3.3V
L = 4.7μH
f = 800kHz
10000.0
1000.0
POWER LOSS (mW)
100.0
10.0
1.0
0.1
0.01
0.001
0.01
0.1
LOAD CURRENT (A)
1
3688 TA01b
4.7μF
EN/UVLO
BST1
V
IN
BIAS
BST2
0.22μF 12μH
SW2
V
OUT2
3.3V
800mA
22pF
1nF
100k
22μF
80
EFFICIENCY (%)
70
60
50
40
1nF
4.7nF
4.7nF
110k
3688 TA01a
V
OUT1
5V
800mA
22pF
22μF
18μH
523k
0.22μF
SW1
LT3688
DA1
FB1
DA2
FB2
RUN/SS2
C
WDT
C
POR1
C
POR2
RT
SYNC
316k
100k 1nF
RUN/SS1
μP
I/O
I/O
RESET
WDI
WDO
RST1
RST2
GND
30
0.0001
f
SW
= 500kHz
3688f
1

LT3688EUF#TRPBF Related Products

LT3688EUF#TRPBF LT3688EFE#PBF LT3688EFE#TRPBF LT3688EUF#PBF LT3688HFE#PBF LT3688HFE#TRPBF LT3688IFE#PBF LT3688IFE#TRPBF LT3688IUF#PBF LT3688IUF#TRPBF
Description Conv DC-DC 3.8V to 36V Step Down Dual-Out 0.8V to 32.4V 0.8A/0.8A Automotive 24-Pin QFN EP T/R Conv DC-DC 3.8V to 36V Step Down Dual-Out 0.8V to 32.4V 0.8A/0.8A Automotive 24-Pin TSSOP EP Tube Conv DC-DC 3.8V to 36V Step Down Dual-Out 0.8V to 32.4V 0.8A/0.8A Automotive 24-Pin TSSOP EP T/R Conv DC-DC 3.8V to 36V Step Down Dual-Out 0.8V to 32.4V 0.8A/0.8A Automotive 24-Pin QFN EP Tube Conv DC-DC 3.8V to 36V Step Down Dual-Out 0.8V to 32.4V 0.8A/0.8A Automotive 24-Pin TSSOP EP Tube Conv DC-DC 3.8V to 36V Step Down Dual-Out 0.8V to 32.4V 0.8A/0.8A Automotive 24-Pin TSSOP EP T/R Conv DC-DC 3.8V to 36V Step Down Dual-Out 0.8V to 32.4V 0.8A/0.8A Automotive 24-Pin TSSOP EP Tube Conv DC-DC 3.8V to 36V Step Down Dual-Out 0.8V to 32.4V 0.8A/0.8A Automotive 24-Pin TSSOP EP T/R Conv DC-DC 3.8V to 36V Step Down Dual-Out 0.8V to 32.4V 0.8A/0.8A Automotive 24-Pin QFN EP Tube Conv DC-DC 3.8V to 36V Step Down Dual-Out 0.8V to 32.4V 0.8A/0.8A Automotive 24-Pin QFN EP T/R
EU restricts the use of certain hazardous substances Compliant Compliant Compliant Compliant Compliant Compliant Compliant Compliant Compliant Compliant
ECCN (US) EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
Part Status Active Active Active Active Active Active Active Active Active Active
Type Step Down Step Down Step Down Step Down Step Down Step Down Step Down Step Down Step Down Step Down
Output Type Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable
Switching Frequency (kHz) 350 to 2200 350 to 2200 350 to 2200 350 to 2200 350 to 2200 350 to 2200 350 to 2200 350 to 2200 350 to 2200 350 to 2200
Switching Regulator Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Number of Outputs 2 2 2 2 2 2 2 2 2 2
Output Voltage (V) 0.8 to 32.4 0.8 to 32.4 0.8 to 32.4 0.8 to 32.4 0.8 to 32.4 0.8 to 32.4 0.8 to 32.4 0.8 to 32.4 0.8 to 32.4 0.8 to 32.4
Maximum Output Current (A) 0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8 0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8 0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8 0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8 0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8 0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8 0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8 0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8 0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8 0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8|0.8
Minimum Input Voltage (V) 3.8 3.8 3.8 3.8 3.8 3.8 3.8 3.8 3.8 3.8
Maximum Input Voltage (V) 36 36 36 36 36 36 36 36 36 36
Operating Supply Voltage (V) 3.8 to 36 3.8 to 36 3.8 to 36 3.8 to 36 3.8 to 36 3.8 to 36 3.8 to 36 3.8 to 36 3.8 to 36 3.8 to 36
Typical Quiescent Current (uA) 235 235 235 235 235 235 235 235 235 235
Line Regulation 0.002%/V(Typ) 0.002%/V(Typ) 0.002%/V(Typ) 0.002%/V(Typ) 0.002%/V(Typ) 0.002%/V(Typ) 0.002%/V(Typ) 0.002%/V(Typ) 0.002%/V(Typ) 0.002%/V(Typ)
Minimum Operating Temperature (°C) -40 -40 -40 -40 -40 -40 -40 -40 -40 -40
Maximum Operating Temperature (°C) 125 125 125 125 150 150 125 125 125 125
Supplier Temperature Grade Extended Extended Extended Extended Automotive Automotive Industrial Industrial Industrial Industrial
Packaging Tape and Reel Tube Tape and Reel Tube Tube Tape and Reel Tube Tape and Reel Tube Tape and Reel
Supplier Package QFN EP TSSOP EP TSSOP EP QFN EP TSSOP EP TSSOP EP TSSOP EP TSSOP EP QFN EP QFN EP
Pin Count 24 24 24 24 24 24 24 24 24 24
Standard Package Name QFN SOP SOP QFN SOP SOP SOP SOP QFN QFN
Mounting Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 0.75(Max) 1.05(Max) 1.05(Max) 0.75(Max) 1.05(Max) 1.05(Max) 1.05(Max) 1.05(Max) 0.75(Max) 0.75(Max)
Package Length 4 7.9(Max) 7.9(Max) 4 7.9(Max) 7.9(Max) 7.9(Max) 7.9(Max) 4 4
Package Width 4 4.5(Max) 4.5(Max) 4 4.5(Max) 4.5(Max) 4.5(Max) 4.5(Max) 4 4
PCB changed 24 24 24 24 24 24 24 24 24 24
Lead Shape No Lead Gull-wing Gull-wing No Lead Gull-wing Gull-wing Gull-wing Gull-wing No Lead No Lead
HTS 8542.39.00.01 - 8542.39.00.01 8504.40.95.80 8542.39.00.01 8542.39.00.01 - 8542.39.00.01 8542.39.00.01 8542.39.00.01

Recommended Resources

Thyristor speed regulating circuit b

5G8713 stepper motor control circuit

High efficiency LED driver circuit diagram

CMOS and industrial control interface circuit

IR2167 ballast integrated circuit

F28335 uses external SRAM for program simulation
When I was simulating F28335 recently, the internal RAM space was not enough, so I pieced together 22K,RAML0: origin = 0x008000, length = 0x000800RAML1_5: origin = 0x008800, length = 0x005800.text :RA...
fish001 DSP and ARM Processors
Looking for experts in Helmholtz coil magnetic field
I plan to make a uniform magnetic field of 80mm*80mm*80mm. I am too lacking in knowledge and would like to seek help from experts. Thank you in advance!...
Riku815 Integrated technical exchanges
CCS Tips: Remove the prompt when burning DSP/BIOS
With the continuous development of digital signal processing theory and computers, modern industrial production and scientific and technological research need to rely on digital processing methods. Th...
灞波儿奔 DSP and ARM Processors
SEED-DEC6416 is available for purchase, second-hand is also acceptable
Looking to buy 2 SEED-DEC6416 development boards, second-hand is also OK. If you have stock, please contact me on QQ: 466242178...
guoping2292 Buy&Sell
Calculation of stack usage in C2000 DSP
[size=4] For those who work on power electronics software, there is usually not much code in this line, and it often takes several months to adjust a few lines of code, such as grid-connected algorith...
灞波儿奔 DSP and ARM Processors
IRLR024 Output Current
A 100W/200R cement resistor is connected to the J14 load. I checked the power meter and found that the load power is less than 1W. The voltage given by PC6 is 3.3V. The meter shows that there is a cur...
tangwei8802429 Analog electronics
Shortcut:   L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 LA LB LC LD LE LF LG LH LI LJ LK LL LM LN LO LP LQ LR LS LT LU LV LW LX LY LZ M0 M1 M2 M3 M4 M5 M6 M7 M8 M9 MA MB MC MD ME MF MG MH MI MJ MK ML MM MN MO MP MQ MR MS MT MU MV MW MX MY MZ N0 N1 N2 N3 N4 N5 N6 N7 N8 NA NB NC ND NE NF NG NH NI NJ NK NL NM NN NO NP NQ NR NS NT NU NV NX NZ O0 O1 O2 O3 OA OB OC OD OE OF OG OH OI OJ OK OL OM ON OP OQ OR OS OT OV OX OY OZ P0 P1 P2 P3 P4 P5 P6 P7 P8 P9 PA PB PC PD PE PF PG PH PI PJ PK PL PM PN PO PP PQ PR PS PT PU PV PW PX PY PZ Q1 Q2 Q3 Q4 Q5 Q6 Q8 Q9 QA QB QC QE QF QG QH QK QL QM QP QR QS QT QV QW QX QY R0 R1 R2 R3 R4 R5 R6 R7 R8 R9 RA RB RC RD RE RF RG RH RI RJ RK RL RM RN RO RP RQ RR RS RT RU RV RW RX RY RZ

Popular Components

  1. 2200AGH300422MA
  2. PTC21DBAN
  3. 7108J62W3GE32
  4. M7VWK-2510J
  5. 88880-226RLF
  6. TA035TCR226MDR-13
  7. PIC16F15376-E/SOQTP
  8. PTN1005K2401DST1
  9. KTLP3507STR
  10. 15SMCJ220A
  11. A2547WVB-29P-G30
  12. CR2010D33K2E041W

Popular Articles

  1. FaceTime SharePlay feature may be delayed
  2. Problems in Field Testing of Contact Loop Resistance Tester
  3. s3c2440 learning path-004 distinguish nand/nor startup
  4. 51 MCU 12864 large LCD screen Tetris
  5. Meiya Pico: Has carried out technical research on virtual economy and other aspects to cope with the future metaverse
  6. Focusing on the research and development of silicon carbide power chips, Qingchun Semiconductor has completed hundreds of millions of yuan in financing
  7. MediaTek will launch 5G millimeter wave mobile chips with Wi-Fi 7 solutions next year
  8. Google Pixel 6/Pro has another bug: the screen auto-rotation function fails
  9. Datang NXP: Battery management chip innovation leads the transformation of the new energy industry
  10. Industry: Folding phone prices are falling rapidly, second-hand phones drop 40% in half a year

Technical ResourceMore

  1. Contains makefile config.h rominit romstart userinit and other files
  2. MAX965_M
  3. Design of file system based on μC/OS-II
  4. This is a HID project program for LPC2148 on a Keil MCB2148 development board
  5. linux tutorial
  6. DC Motor Speed ​​Control System Simulation
  7. DCAC inverter production
  8. Create a beautiful resume template, create a beautiful resume template
  9. Research on practical histogram matching method for digital dental X-ray images
  10. Fundamentals of Radio Frequency Circuits (Zhao Jianxun, Deng Jun)

ForumMore

  1. Looking for experts in Helmholtz coil magnetic field
  2. CCS Tips: Remove the prompt when burning DSP/BIOS
  3. SEED-DEC6416 is available for purchase, second-hand is also acceptable
  4. Calculation of stack usage in C2000 DSP
  5. IRLR024 Output Current
  6. Bidirectional thyristor circuit wiring problem
  7. "Goodbye 2019, Hello 2020" + The wind and clouds are free and happy
  8. The power problem of the series resistance of the atomizer heating wire
  9. [GD32F310 Review] Interrupt test and GPIO usage
  10. As a newcomer, I don't seem to be qualified to make suggestions, but I still want to make a small suggestion!

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