LT8391AE .......................................... –40°C to 125°C
LT8391AI ........................................... –40°C to 125°C
LT8391AH .......................................... –40°C to 150°C
Storage Temperature Range .................. –65°C to 150°C
PIN CONFIGURATION
TOP VIEW
TOP VIEW
BST1
BST2
CTRL2
SW1
SW2
22 TG2
21 V
OUT
20 PWMTG
29
GND
19 SYNC/SPRD
18 RT
17 V
C
16 FB
15 SS
9 10 11 12 13 14
V
REF
CTRL1
ISP
ISN
FAULT
BG1
BG2
28 BG2
27 BST2
26 SW2
25 TG2
24 V
OUT
23 PWMTG
22 SYNC/SPRD
21 RT
20 V
C
19 FB
18 SS
17
FAULT
16 CTRL2
15 ISN
BG1
BST1
SW1
TG1
LSP
LSN
V
IN
INTV
CC
EN/UVLO
1
2
3
4
5
6
7
8
9
29
GND
28 27 26 25 24 23
TG1 1
LSP 2
LSN 3
V
IN
4
INTV
CC
5
EN/UVLO 6
RP 7
PWM 8
RP 10
PWM 11
V
REF
12
CTRL1 13
ISP 14
FE PACKAGE
28-LEAD PLASTIC TSSOP
θ
JA
= 30°C/W,
θ
JC
= 5°C/W
EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
UFD PACKAGE
28-LEAD (4mm
×
5mm) PLASTIC QFN
θ
JA
= 34°C/W,
θ
JC
= 3.4°C/W
EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
(http://www.linear.com/product/LT8391A#orderinfo)
LEAD FREE FINISH
LT8391AEFE#PBF
LT8391AIFE#PBF
LT8391AHFE#PBF
LT8391AEUFD#PBF
LT8391AIUFD#PBF
LT8391AHUFD#PBF
TAPE AND REEL
LT8391AEFE#TRPBF
LT8391AIFE#TRPBF
LT8391AHFE#TRPBF
LT8391AEUFD#TRPBF
LT8391AIUFD#TRPBF
LT8391AHUFD#TRPBF
PART MARKING*
LT8391AFE
LT8391AFE
LT8391AFE
8391A
8391A
8391A
PACKAGE DESCRIPTION
28-Lead Plastic TSSOP
28-Lead Plastic TSSOP
28-Lead Plastic TSSOP
28-Lead (4mm × 5mm) Plastic QFN
28-Lead (4mm × 5mm) Plastic QFN
28-Lead (4mm × 5mm) Plastic QFN
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
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/.
Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
8391af
2
For more information
www.linear.com/LT8391A
LT8391A
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 2). V
IN
= 12V, V
EN/UVLO
= 1.5V unless otherwise noted.
SYMBOL PARAMETER
V
IN
Operating Voltage Range
V
IN
Quiescent Current
V
OUT
Voltage Range
V
OUT
Quiescent Current
Linear Regulators
INTV
CC
Regulation Voltage
INTV
CC
Load Regulation
INTV
CC
Line Regulation
INTV
CC
Current Limit
INTV
CC
Dropout Voltage (V
IN
– INTV
CC
)
INTV
CC
Undervoltage Lockout Threshold
INTV
CC
Undervoltage Lockout Hysteresis
V
REF
Regulation Voltage
V
REF
Load Regulation
V
REF
Line Regulation
V
REF
Current Limit
V
REF
Undervoltage Lockout Threshold
V
REF
Undervoltage Lockout Hysteresis
Control Inputs/Outputs
EN/UVLO Shutdown Threshold
EN/UVLO Enable Threshold
EN/UVLO Enable Hysteresis
EN/UVLO Hysteresis Current
V
EN/UVLO
= 0.3V
V
EN/UVLO
= 1.1V
V
EN/UVLO
= 1.3V
V
CTRL1/2
= 0.75V (Note 4), Current out of
Pin
Falling
l
l
ELECTRICAL CHARACTERISTICS
CONDITIONS
l
MIN
4
TYP
1
270
2.1
MAX
60
2
2.8
60
0.5
0.5
60
5.15
4
4
190
3.64
2.03
1
0.2
3.2
1.90
UNITS
V
µA
µA
mA
V
µA
µA
µA
V
%
%
mA
mV
V
V
V
%
%
mA
V
mV
V
EN/UVLO
= 0.3V
V
EN/UVLO
= 1.1V
Not Switching
l
0
0.1
0.1
40
5.0
1
1
110
3.44
145
160
3.54
0.24
2.00
0.4
0.1
2
1.78
2.5
1.84
50
0.3
1.196
–0.1
2.2
–0.1
0
190
0.6
1.220
13
0
2.5
0
20
200
28
V
EN/UVLO
= 0.3V, V
OUT
= 12V
V
EN/UVLO
= 1.1V, V
OUT
= 12V
Not Switching, V
OUT
= 12V
I
INTVCC
= 20mA
I
INTVCC
= 0mA to 80mA
I
INTVCC
= 20mA, V
IN
= 6V to 60V
V
INTVCC
= 4.5V
I
INTVCC
= 20mA, V
IN
= 4V
Falling
I
VREF
= 100µA
I
VREF
= 0mA to 1mA
I
VREF
= 100µA, V
IN
= 4V to 60V
V
REF
= 1.8V
Falling
l
20
4.85
1.97
1.0
1.244
0.1
2.8
0.1
50
210
V
V
mV
µA
µA
µA
nA
mV
mV
Falling
l
CTRL1, CTRL2 Input Bias Current
CTRL1, CTRL2 Dim-Off Threshold
CTRL1, CTRL2 Dim-Off Hysteresis
PWM Dimming
External PWM Dimming Threshold
External PWM Dimming Hysteresis
Internal PWM Dimming Duty Cycle
Rising, R
P
= 30k
R
P
= 30k
V
PWM
= 1V, R
P
≥ 51k
V
PWM
= 1.5V, R
P
≥ 51k
V
PWM
= 2V, R
P
≥ 51k
R
P
= 51k
R
P
= 82k
R
P
= 130k
R
P
= 200k
R
P
= 300k
l
1.3
1.4
220
1.5
3
53
V
mV
%
%
%
47
97
256
512
1024
2048
4096
Switching Frequency to Internal PWM Dimming
Frequency Ratio
8391af
For more information
www.linear.com/LT8391A
3
LT8391A
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 2). V
IN
= 12V, V
EN/UVLO
= 1.5V unless otherwise noted.
SYMBOL PARAMETER
RP Pin Current Limit
Minimum V
OUT
for PWMTG to be On
PWMTG On Voltage V
(VOUT-PWMTG)
PWMTG Off Voltage V
(VOUT-PWMTG)
PWM to PWMTG Turn On Propagation Delay
PWM to PWMTG Turn Off Propagation Delay
PWMTG Turn On Fall Time
PWMTG Turn Off Rise Time
Error Amplifier
Full Scale LED Current Regulation V
(ISP-ISN)
9/10th LED Current Regulation V
(ISP-ISN)
1/2 LED Current Regulation V
(ISP-ISN)
1/20th LED Current Regulation V
(ISP-ISN)
Zero Scale LED Current Regulation V
(ISP-ISN)
ISP/ISN Input Common Mode Range
ISP/ISN Low Side to High Side Switchover
Voltage
ISP/ISN High Side to Low Side Switchover
Voltage
ISP Input Bias Current
V
ISP
= V
ISN
V
ISP
= V
ISN
V
PWM
= 5V, V
ISP
= V
ISN
= 12V
V
PWM
= 5V, V
ISP
= V
ISN
= 0V
V
EN/UVLO
= 0V, V
ISP
= V
ISN
= 12V or 0V
V
PWM
= 5V, V
ISP
= V
ISN
= 12V
V
PWM
= 5V, V
ISP
= V
ISN
= 0V
V
EN/UVLO
= 0V, V
ISP
= V
ISN
= 12V or 0V
V
C
= 1.2V
V
IN
= 4V to 60V
l
ELECTRICAL CHARACTERISTICS
CONDITIONS
V
RP
= 0V, Current out of Pin
PWM dimming on
V
OUT
= 12V
V
OUT
= 12V
C
PWMTG
= 3.3nF to V
OUT
, 50% to 50%
C
PWMTG
= 3.3nF to V
OUT
, 50% to 50%
C
PWMTG
= 3.3nF to V
OUT
, 10% to 90%
C
PWMTG
= 3.3nF to V
OUT
, 90% to 10%
V
CTRL1/2
≥ 1.35V (Note 4), V
ISP
= 12V
V
CTRL1/2
≥ 1.35V (Note 4), V
ISP
= 0V
V
CTRL1/2
= 1.15V (Note 4), V
ISP
= 12V
V
CTRL1/2
= 1.15V (Note 4), V
ISP
= 0V
V
CTRL1/2
= 0.75V (Note 4), V
ISP
= 12V
V
CTRL1/2
= 0.75V (Note 4), V
ISP
= 0V
V
CTRL1/2
= 0.30V (Note 4), V
ISP
= 12V
V
CTRL1/2
= 0.30V (Note 4), V
ISP
= 0V
V
CTRL1/2
= 0.25V (Note 4), V
ISP
= 12V
V
CTRL1/2
= 0.25V (Note 4), V
ISP
= 0V
l
l
l
l
l
l
l
l
l
l
l
MIN
TYP
40
2.4
MAX
3
5.5
0.1
UNITS
µA
V
V
V
ns
ns
ns
ns
4.5
–0.1
5
0
90
40
300
10
97
97
87
87
47.5
47.5
3
3
–2
–2
0
100
100
90
90
50
50
5
5
0
0
1.8
1.7
23
–10
0
23
–10
0
2000
103
103
93
93
52.5
52.5
7
7
2
2
60
mV
mV
mV
mV
mV
mV
mV
mV
mV
mV
V
V
V
µA
µA
µA
µA
µA
µA
µS
ISN Input Bias Current
LED Current Regulation Amplifier g
m
FB Regulation Voltage
FB Line Regulation
FB Load Regulation
FB Voltage Regulation Amplifier g
m
FB Input Bias Current
V
C
Output Impedance
V
C
Standby Leakage Current
V
C
= 1.2V, PWM Dimming Off
–10
FB in Regulation, Current Out of Pin
0.98
1.00
0.2
0.2
660
10
10
0
1.02
0.5
0.8
40
10
V
%
%
µS
nA
MΩ
nA
8391af
4
For more information
www.linear.com/LT8391A
LT8391A
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
The evolution of the power grid requires the addition of wireless connectivity to existing wired connections for asset monitoring and control. The main factors for increasing wireless connectivity inc...
After experiencing Easy Power Supply, I suddenly found that circuits can be learned in this way. It is quite interesting. However, I still like to make the actual circuit. Isn’t it more intuitive?...
Are there any SMD electrolytic capacitor packages in Cadence? It seems that there are few commonly used direct-insert electrolytic capacitor packages....
Sensors, controllers, and actuators are the foundation of automotive electronics and play an important supporting role in the entire automotive system. The development of these technologies is also ad...
Following the article "TLP3547 Evaluation Board Evaluation Report (I) - Unboxing", this article will test the Toshiba photorelay TLP3547. This article tests the response speed. (Posting failed, restor...
With the promotion of the construction of intelligent communities in the country, anti-theft systems have become essential equipment for intelligent communities. Especially in recent years, the urg...[Details]
1. Overview
Will passive devices
produce nonlinear intermodulation distortion? The answer is yes! Although there is no systematic theoretical analysis, it has been found in engineerin...[Details]
There are three types of mobile TV: one is based on analog TV broadcasting network, another is based on mobile communication network, and the other is based on digital broadcasting network. The f...[Details]
In this article, the high-performance DSP developed by TI can be used as an effective confidentiality method if it is applied to PC encryption cards.
As an effective network security solution,...[Details]
In recent years, lighting has become an important area that countries around the world are targeting to promote energy conservation and environmental protection. According to statistics, about 20% ...[Details]
Power management solutions for today's portable application processors are becoming increasingly integrated. Total power consumption, standby and sleep current consumption affect battery size, bill...[Details]
introduction
The emergence of high-performance, low-power embedded CPUs and high-reliability network operating systems has made it possible to implement applications with large amounts of comp...[Details]
5. Identifiers and keywords of C language
A complete PIC microcontroller C language program usually consists of six parts: include files (i.e. header files 1, variable definitions, variable de...[Details]
Contact resistance
is the resistance to current flow through a closed pair of contacts. This type of measurement is performed on devices such as connectors,
relays
, and switches. The...[Details]
1 Introduction
Water resources are the basic conditions for human survival and the lifeline of economic development. The reality shows that due to the global shortage of water resources and th...[Details]
1 Introduction to HART Protocol
HART (Highway Addressable Remote Transducer), an open communication protocol for addressable remote sensor high-speed channels, was launched by Rosemen in the U...[Details]
Toyohashi University of Technology demonstrated electric field coupled wireless power supply technology using life-size car tires and roads at the wireless technology exhibition "Wireless Technolog...[Details]
1. When the slip speed regulating motor is undergoing frequency conversion and energy saving transformation, the original excitation box (referred to as the speed regulating box) and the original s...[Details]
We know that the inverter consists of two parts: the main circuit and the control circuit. Due to the nonlinearity of the main circuit (switching action), the inverter itself is a source of harmoni...[Details]
Abstract: In recent years, with the establishment and grid-connected power generation of a large number of solar photovoltaic power stations at home and abroad, photovoltaic grid-connected inverter...[Details]
Microcontroller MCU
京公网安备 11010802033920号
EEWORLD
