EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
LT3694-1 PINOUT IS SHOWN IN PARENTHESIS
FE PACKAGE
20-LEAD PLASTIC TSSOP
θ
JA
= 38°C/W
EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB
LT3694-1 PINOUT IS SHOWN IN PARENTHESIS
ORDER INFORMATION
LEAD FREE FINISH
LT3694EUFD#PBF
LT3694IUFD#PBF
LT3694EFE#PBF
LT3694IFE#PBF
LT3694-1EUFD#PBF
LT3694-1IUFD#PBF
LT3694-1EFE#PBF
LT3694-1IFE#PBF
TAPE AND REEL
LT3694EUFD#TRPBF
LT3694IUFD#TRPBF
LT3694EFE#TRPBF
LT3694IFE#TRPBF
LT3694-1EUFD#TRPBF
LT3694-1IUFD#TRPBF
LT3694-1EFE#TRPBF
LT3694-1IFE#TRPBF
PART MARKING*
3694
3694
LT3694FE
LT3694FE
36941
36941
LT3694FE-1
LT3694FE-1
PACKAGE DESCRIPTION
28-Lead (4mm
×
5mm) Plastic QFN
28-Lead (4mm
×
5mm) Plastic QFN
20-Lead Plastic TSSOP
20-Lead Plastic TSSOP
28-Lead (4mm
×
5mm) Plastic QFN
28-Lead (4mm
×
5mm) Plastic QFN
20-Lead Plastic TSSOP
20-Lead Plastic TSSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–40°C to 125°C
–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/
36941fb
2
LT3694/LT3694-1
ELECTRICAL CHARACTERISTICS
PARAMETER
V
IN
Internal Undervoltage Lockout
Overvoltage Shutdown Threshold
Input Quiescent Current
Bias Quiescent Current
Shutdown Current
EN/UVLO Threshold, Bias On
EN/UVLO Threshold, Switching On
Reference Voltage Line Regulation
Switching Frequency
SYNC Input Frequency Range
V
IH
, SYNC
V
IL
, SYNC
V
OH
, CLKOUT
V
OL
, CLKOUT
PGOOD Output Voltage Low
PGOOD Leakage
PGOOD Threshold (Relative to V
FB
)
Switching Regulator
Feedback Pin Voltage
Feedback Pin Bias Current
Error Amplifier Transconductance
Error Amplifier Voltage Gain
TRK/SS Pull-Up Current
TRK/SS Threshold to Start Switching
V
C1
Source Current
V
C1
Sink Current
V
C1
Clamp Voltage
V
C1
Switching Threshold
V
C1
to Switch Current Gain
Switch Leakage Current
Minimum Boost Voltage Above Switch
Switch Current Limit (Note 3)
Switch V
CESAT
BST Operating Current
V
F
, BST Diode
I
L
BST Diode
DA Current Limit
Minimum Switch Off-Time
V
IN
= 36V
(Note 4)
(Note 3) 10% Duty Cycle
I
SW1
= 3A
I
SW1
= 3A
I
BST
= 100mA
V
BST
– V
BIAS
= 36V
l
l
l
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C, V
IN
= 12V, V
BIAS
= 3V, unless otherwise noted. (Notes 2, 9)
CONDITIONS
l
l
MIN
3.5
36
TYP
3.8
38
1
2
0.1
MAX
4
40
2
3.5
2
1.23
1.1
2.5
0.35
UNITS
V
V
mA
mA
µA
mV
V
%/V
MHz
MHz
V
V
V
V
V
nA
%
mV
nA
µS
V/V
Not Switching
Not Switching
V
EN/UVLO
= 0.1V
350
1.16
0.9
0.25
1.5
1.6
5V < V
IN
< 36V
R
T
= 40.2k
LT3694 Only
LT3694 Only
LT3694 Only
I
CLKOUT
= –50µA, LT3694-1 Only
I
CLKOUT
= 50µA, LT3694-1 Only
I
PGOOD
= 250µA
V
PGOOD
= 2V
(Note 8)
86
735
l
l
l
l
l
l
500
1.2
0.01
1.0
2.6
0.3
0.2
10
90
750
–50
350
600
0.4
1000
94
765
–500
–2
35
V
C
= 0.6V
V
C
= 0.6V
–3
50
–20
28
2
0.75
3.6
0.01
1.8
–4
70
µA
mV
µA
µA
V
V
A/V
10
2.5
6
µA
V
A
mV
mA
V
µA
3.5
4.9
600
60
0.8
1
2.6
3.6
4.5
140
A
ns
36941fb
3
LT3694/LT3694-1
ELECTRICAL CHARACTERISTICS
PARAMETER
LDO Regulator
Feedback Pin Voltage
Feedback Pin Bias Current
Error Amplifier Voltage Gain
TRK/SS Pull-Up Current
TRK/SS Threshold to Shut Down LDO
Line Regulation
Load Regulation
Base Drive
Current Limit Threshold
Short-Circuit Current Limit Threshold
Minimum BIAS to DRV Voltage (Note 7)
Minimum V
IN
to DRV Voltage
V
FB
= 0
I
DRV
= 10mA
I
DRV
= 10mA
l
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C, V
IN
= 12V, V
BIAS
= 3V, unless otherwise noted. (Notes 2, 9)
CONDITIONS
MIN
735
TYP
750
–50
2800
–2
35
5V < V
IN
< 36V
I
DRV
From 0.1mA to 10mA
l
l
MAX
765
–500
–4
70
UNITS
mV
nA
µA
mV
%/V
mV/mA
–3
50
0.025
0.5
10
47
22
15
60
26
0.3
2.0
20
70
30
0.9
2.3
mA
mV
mV
V
V
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
The LT3694E is guaranteed to meet performance specifications
from 0°C to 125°C junction temperature. Specifications over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT3694I is guaranteed to meet performance specifications from –40°C to
125°C junction temperature.
Note 3:
Current limit is guaranteed by design and/or correlation to static
test. Slope compensation reduces current limit at higher duty cycles.
Note 4:
This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the internal power switch.
Note 5:
This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions.
Junction temperature will exceed the maximum operating range when
overtemperature protection is active. Continuous operation above the
specified maximum operating junction temperature may impair
device reliability.
Note 6:
Absolute Maximum Voltage at V
IN
and EN/UVLO pins is 70V for
non-repetitive, 1 second transients and 36V for continuous operation.
Note 7:
The LDO will function if the BIAS to DRV differential is not met,
but the base drive current will be drawn from V
IN
instead of BIAS.
Note 8:
The PGOOD pin will pull low when the voltage on any of the three
FB pins is lower than the PGOOD threshold value.
Note 9:
Positive currents flow into pins, negative currents flow out of pins.
Minimum and maximum values refer to absolute values.
The example code is as follows:#define TestDefine Test1#ifdef TestDefine == Test2for(i = 0; i{...}#elsefor(i = 0; i{...}#endifThe original intention is to enter the second for statement. However, the ...
Recently, Tianfeng Securities analyst Ming-Chi Kuo released an analysis report. According to him, with the advent of the "Metaverse", Wi-Fi technology including Wi-Fi 6, Wi-Fi 6E and Wi-Fi 7 and its s...
Atmel SAM D21 PTC module and QTouch design platform : https://training.eeworld.com.cn/course/48? Atmel SAM D21 PTC module and QTouch design platform...
Recently, the first Digital China Summit was held in Fuzhou, attracting many domestic ICT industry giants to participate in the exhibition. The long queues outside the venue, the noisy and exciting...[Details]
Entering the information age after the millennium, the huge demand for semiconductor chips has made China the world's largest semiconductor market. According to relevant data, the scale of my count...[Details]
On April 20, Alibaba Group announced that it would acquire
the
chip
company Zhongtian Microelectronics and invest in six
chip
companies. Yesterday, JD.com CEO Liu Qiangdong said in a...[Details]
China Energy Storage Network:
Blockchain + finance, blockchain + environmental protection, blockchain + insurance, even a roadside fried chicken shop is using the banner of blockchain + fried...[Details]
A few days ago, Hanergy Chairman Li held a grand launch of Hanwa new products, which once again attracted the attention of the mass media to the development of photovoltaics. The unique Hanergy has gr...[Details]
1. FSMC Brief FSMC, the Flexible Static Storage Controller, is capable of interfacing with synchronous or asynchronous memories and 16-bit PC memory cards. The FSMC interface of STM32 s...[Details]
Photovoltaic inverters are the core equipment of photovoltaic systems. Their main function is to convert the direct current generated by photovoltaic modules into alternating current that meets the...[Details]
Internal channels of ADC: In addition to using external channels to collect external analog voltage signals, the ADC of STM32 also has two internal channels 16 and 17. Channel 16 is connected to ...[Details]
Mixed reality (augmented and virtual reality) is the next computing frontier after the PC in the 1970s, the web in the 1990s, and mobile platforms in the 21st century.
MR
is the most unique...[Details]
;The hardware connection circuit of the 51 single-chip microcomputer is as follows: ;P1.3 and P1.4 are each connected to a button; ;P0.0 and P0.3 are each connected to a light-emitting diode; ;P2.0~P...[Details]
The CAN of the STM32 ordinary chip has 14 filter groups (the interconnected type has 28 filter groups) to filter the received frames. Each filter group includes 2 configurable 32-bit registers: CAN_F...[Details]
While imaging industry experts know that Apple has designed a complex 3D camera for its iPhone X, called "TrueDepth," most of the details of the 3D system inside the module, including chips, componen...[Details]
About a dozen years ago,
AMD
was also a rival to Intel. It can be said that the two microprocessor manufacturers have been in love and hate for many years, which is completely a commercial ...[Details]
stm32/stm8
京公网安备 11010802033920号
EEWORLD
