(Note 3) ...................................................... –40 to 125°C
Maximum Junction Temperature .......................... 125°C
Storage Temperature Range .................. –65°C to 150°C
52 51 50 49 48 47 46 45 44 43 42 41
FLT1
1
FLT2
2
FLT3
3
PWM1 4
PWM2 5
PWM3 6
V
REF
7
CTRL1 8
CTRL2 9
CTRL3 10
RT 11
SYNC 12
UKG PACKAGE
VARIATION: UKG52(47)
52-LEAD (7mm
×
8mm) PLASTIC QFN
θ
JA
= 28°C/W
EXPOSED PAD (PIN 53) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LT3797EUKG#PBF
LT3797IUKG#PBF
TAPE AND REEL
LT3797EUKG#TRPBF
LT3797IUKG#TRPBF
PART MARKING*
LT3797UKG
LT3797UKG
PACKAGE DESCRIPTION
52-Lead (7mm
×
8mm) Plastic QFN
52-Lead (7mm
×
8mm) Plastic QFN
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
3797f
2
For more information
www.linear.com/LT3797
LT3797
ELECTRICAL CHARACTERISTICS
PARAMETER
V
IN
Minimum Operation Voltage
V
IN
Overvoltage Lockout
V
IN
Shutdown I
Q
V
IN
Operating I
Q
(Not Switching)
INTV
CC
Operating I
Q
(Not Switching)
V
REF
Voltage
V
REF
Line Regulation
SENSEP1-SENSEN1, SENSEP2-SENSEN2,
SENSEP2-SENSEN2 Current Limit Threshold
SENSEP1, SENSEP2, SENSEP3 Input Bias Current Current Out of Pin, SENSEP1, SENSEP2,
SENSEP3 = 0V
SENSEN1, SENSEN2, SENSEN3 Input Bias Current Current Out of Pin
Integrated INTV
CC
Power Supply
INTV
CC
Regulation Voltage
INTV
CC
Undervoltage Lockout Threshold
INTV
CC
Line Regulation (ΔV
INTVCC
/ΔV
IN
)
Error Amplifiers
LED Current Sense Threshold (ISP1-ISN1,
ISP2-ISN2, ISP3-ISN3)
8/10th LED Current Sense Threshold (ISP1-ISN1,
ISP2-ISN2, ISP3-ISN3)
1/10th LED Current Sense Threshold (ISP1-ISN1,
ISP2-ISN2, ISP3-ISN3)
CTRL1, CTRL2, CTRL3 Range for Linear Current
Sense Threshold Adjustment
CTRL1, CTRL2, CTRL3 Input Bias Current
CTRL1, CTRL2, CTRL3 Idle Mode Threshold
LED Current Sense Amplifier Input Common Mode
Range (ISN1, ISN2, ISN3)
LED Overcurrent Protection Threshold
(ISP1-ISN1, ISP2-ISN2, ISP3-ISN3)
ISP1, ISP2, ISP3 Input Bias Current (Active)
ISP1, ISP2, ISP3 Input Bias Current (Idle)
ISP1, ISP2, ISP3, FBH1, FBH2, FBH3 = 48V
ISP1, ISP2, ISP3, ISN1, ISN2, ISN3 = 48V
ISP1, ISP2, ISP3, ISN1, ISN2, ISN3 = 0V
PWM1, PWM2, PWM3=0V , ISP1, ISP2, ISP3, ISN1,
ISN2, ISN3 = 48V
PWM1, PWM2, PWM3, ISP1, ISP2, ISP3, ISN1,
ISN2, ISN3 = 0V
ISN1, ISN2, ISN3 Input Bias Current (Active)
ISP1, ISP2, ISP3, ISN1, ISN2, ISN3 = 48V
ISP1, ISP2, ISP3, ISN1, ISN2, ISN3 = 0V
Current Out of Pin, CTRL1, CTRL2, CTRL3 = 0.3V
Falling
Hysteresis
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
[color=#000][font=Arial, Helvetica, sans-serif][size=12px]Do these multiple SW outputs need to be connected together during design? Are there different connection methods based on different topologies...
I encountered a strange problem when compiling a project today. I posted it here for your comments.[[i]This post was last edited by Study_Stellaris on 2011-10-11 20:55[/i]]...
This was shared by Zhihuijun on Bilibili . It is a mini writing robot with CoreXY structure. The structural parts are all 3D printed. The firmware uses grbl ported to the stm32 platform. The stepper m...
I recently encountered a very difficult problem. I would like to ask you for your advice. I used a sampling resistor to sample the voltage across the resistor using a current differential method. Howe...
STM8S103k3 I2C is compiled successfully under STVD+cosmic.When debugging, the simulator program is normal. When connecting to MCU with ST-LINK,it stops at while(!I2C_CheckEvent(I2C_EVENT_MASTER_START_...
1. Several nouns
ABI:
The specifications that an executable file must follow in order to run in a specific execution environment;
Separately generated relocatabl...[Details]
Wave soldering is a crucial electronic component soldering technique used in the production of a wide range of electronic devices, from home appliances to computers to avionics. The process is wide...[Details]
What is "Car Electronic Fence"
Fleet managers can define a graphical area (regular or irregular) or divide it into administrative zones in Yamei Technology's vehicle backend management system ...[Details]
To understand why car engines need gearboxes, we must first understand the characteristics of different types of engines. An engine refers to a machine that can convert a form of energy into kineti...[Details]
With the rapid development of technology, automotive intelligence is increasing at an unprecedented rate. This not only enhances vehicle functionality and comfort, but also places higher deman...[Details]
Whether it is an electric car or an ordinary fuel car, for the vast majority of car buyers, the final cost of use is what they care about most. For fuel cars, how to save fuel is what drivers care ...[Details]
Introduction to the principles of speech recognition technology
Automatic speech recognition (ASR) technology aims to enable computers to understand human speech and extract the textual inform...[Details]
Recently, Tesla released the "Tesla Car Voice Assistant Terms of Use", announcing that the car voice assistant will be connected to the Doubao large model (Skylark large model) and DeepSeek Chat pr...[Details]
Spark plugs are an indispensable device for engines. As the saying goes, without spark plugs, the engine cannot work properly. The serious consequence is that when driving at high speeds, the engin...[Details]
1. Fault phenomenon and cause analysis
1. During the operation of the equipment, the expansion sleeve is subjected to a large torque, and the mating surfaces of the shaft and the sleeve move...[Details]
To improve the lateral active safety of intelligent connected vehicles, the identification and definition of unexpected functional safety scenarios for the EPS (Electronic Steering System) ...[Details]
Before understanding single-phase control transformers, let's briefly understand what a single-phase transformer is. A single-phase transformer uses a single-phase input. Compared to a three-phase ...[Details]
In the field of communications power supplies, AC/DC rectifier power supplies are called primary power supplies or basic power supplies, while DC/DC converters are called secondary power supplies. ...[Details]
Tools/Materials
Yitong Chuanglian MODBUS to PROFIBUS Gateway YT-PB-03
Siemens s7-300
This article describes how to configure the YT-PB-03 MODBUS to PROFIBUS gat...[Details]
We often hear about the precautions for using pure electric vehicles in winter, and many owners even develop relevant strategies, such as adopting a "charge as you go" principle for their vehicles,...[Details]
Power technology
京公网安备 11010802033920号
EEWORLD
