数据搜索系统，热门电子元器件搜索
  Chinese  ▼
ALLDATASHEETCN.COM

X  

预览 PDF HTML

LTC7802EUFDM 数据表(PDF) 8 Page - Analog Devices

部件名 LTC7802EUFDM
功能描述  40V Low IQ, 3MHz Dual, 2-Phase Synchronous Step-Down Controller with Spread Spectrum
PDF  34 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

LTC7802EUFDM 数据表(HTML) 8 Page - Analog Devices

Back Button LTC7802EUFDM Datasheet HTML 4Page - Analog Devices LTC7802EUFDM Datasheet HTML 5Page - Analog Devices LTC7802EUFDM Datasheet HTML 6Page - Analog Devices LTC7802EUFDM Datasheet HTML 7Page - Analog Devices LTC7802EUFDM Datasheet HTML 8Page - Analog Devices LTC7802EUFDM Datasheet HTML 9Page - Analog Devices LTC7802EUFDM Datasheet HTML 10Page - Analog Devices LTC7802EUFDM Datasheet HTML 11Page - Analog Devices LTC7802EUFDM Datasheet HTML 12Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 8 / 34 page
background image
LTC7802
8
Rev. 0
For more information www.analog.com
PIN FUNCTIONS
SENSE1+, SENSE2+ (Pins 1,8): The Positive (+) Input
to the Differential Current Comparators. The ITH pin
voltage and controlled offsets between the SENSE– and
SENSE+ pins in conjunction with RSENSE set the current
trip threshold.
SENSE1–, SENSE2– (Pins 2,7): The Negative (–) Input to
the Differential Current Comparators. The SENSE– pins
supply current to the current comparators when they are
greater than INTVCC. When SENSE1– is 3.2V or greater,
it also supplies the majority of the sleep mode quiescent
current instead of VIN, further reducing the input-referred
quiescent current.
TYPICAL PERFORMANCE CHARACTERISTICS
FREQ (Pin 3): Frequency Control Pin for the Internal
Oscillator. Connect to ground to set the switching fre-
quency to 350kHz. Connect to INTVCC to set the switching
frequency to 2.25MHz. Frequencies between 100kHz and
3MHz can be programmed using a resistor between the
FREQ pin and ground. Minimize the capacitance on this pin.
MODE (Pin 4): Mode Select Input. This input, which acts
on both channels, determines how the LTC7802 operates
at light loads. Pulling this pin to ground selects Burst
Mode operation. An internal 100k resistor to ground also
invokes Burst Mode operation when the pin is floating.
INTVCC Load Regulation
EXTVCC Switchover and INTVCC
Voltage vs Temperature
INTVCC Undervoltage Lockout
Thresholds vs Temperature
Quiescent Current
vs Temperature
Shutdown Current vs VIN Voltage
TRACK/SS Pull-Up Current
vs Temperature
VIN = 12V
EXTVCC = 0V
EXTVCC = 5V
EXTVCC = 6V
INTVCC LOAD CURRENT (mA)
0
50
100
150
200
250
300
4.0
4.2
4.4
4.6
4.8
5.0
5.2
5.4
CC
7802 G19
INTVCC VOLTAGE
EXTVCC RISING
EXTVCC FALLING
VIN = 12V
TEMPERATURE (°C)
–55 –25
5
35
65
95
125 155
4.2
4.4
4.6
4.8
5.0
5.2
5.4
CC
7802 G20
RISING
FALLING
TEMPERATURE (°C)
–55 –25
5
35
65
95
125 155
3.7
3.8
3.9
4.0
4.1
4.2
4.3
4.4
Thresholds vs Temperature
7802 G21
ONLY CHANNEL 1 ON
SLEEP MODE
VIN = 12V
EXTVCC = 5V
SENSE1– = 3.3V
EXTVCC = 0V
SENSE1– = 3.3V
EXTVCC = 0V
SENSE1– = 0V
TEMPERATURE (°C)
–55 –25
5
35
65
95
125 155
0
5
10
15
20
25
30
35
40
7802 G22
155°C
25°C
–55°C
125°C
VIN VOLTAGE (V)
0
5
10
15
20
25
30
35
40
0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
IN
7802 G23
TEMPERATURE (°C)
–55 –25
5
35
65
95
125 155
9
10
11
12
13
14
15
7802 G24



Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34


数据表 下载

Go To PDF Page


链接网址



ALLDATASHEET是否为您带来帮助?  [ DONATE ] 

关于 Alldatasheet   |   广告服务   |   联系我们   |   隐私政策   |   数据表链接    |   链接交换   |   制造商名单
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com