音影先锋亚洲天堂网|电影世界尽头的爱完整版播放|国产 熟女 91|高清无码免费观看欧美日韩|韩国一区二区三区黄色录像|美女亚洲加勒比在线|亚洲综合网 开心五月|7x成人在线入口|成人网站免费日韩毛片区|国产黄片?一级?二级?三级

LTC3717EGN Datasheet

  • LTC3717EGN

  • Wide Operating Range, No RSENSE Step-Down Controller for DDR...

  • 20頁

  • LINER

掃碼查看芯片數(shù)據(jù)手冊

上傳產(chǎn)品規(guī)格書

PDF預(yù)覽

LTC3717
Wide Operating Range,
No R
SENSE
TM
Step-Down Controller
for DDR/QDR Memory Termination
FEATURES
s
s
DESCRIPTIO
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
V
OUT
= 1/2 V
IN
(Supply Splitter)
Adjustable and Symmetrical Sink/Source
Current Limit up to 20A
鹵0.65%
Output Voltage Accuracy
Up to 97% Efficiency
No Sense Resistor Required
Ultrafast Transient Response
True Current Mode Control
2% to 90% Duty Cycle at 200kHz
t
ON(MIN)
鈮?/div>
100ns
Stable with Ceramic C
OUT
Dual N-Channel MOSFET Synchronous Drive
Power Good Output Voltage Monitor
Wide V
CC
Range: 4V to 36V
Adjustable Switching Frequency up to 1.5MHz
Output Overvoltage Protection
Optional Short-Circuit Shutdown Timer
Available in a 16-Pin Narrow SSOP Package
The LTC
廬
3717 is a synchronous step-down switching
regulator controller for double data rate (DDR) and Quad
Data Rate
TM
(QDR
TM
) memory termination. The controller
uses a valley current control architecture to deliver very
low duty cycles without requiring a sense resistor. Oper-
ating frequency is selected by an external resistor and is
compensated for variations in V
IN
.
Forced continuous operation reduces noise and RF inter-
ference. Output voltage is internally set to half of V
REF
,
which is user programmable.
Fault protection is provided by an output overvoltage
comparator and optional short-circuit shutdown timer.
Soft-start capability for supply sequencing is accom-
plished using an external timing capacitor. The regulator
current limit level is symmetrical and user programmable.
Wide supply range allows operation from 4V to 36V at the
V
CC
input.
, LTC and LT are registered trademarks of Linear Technology Corporation.
No R
SENSE
is a trademark of Linear Technology Corporation.
QDR RAMs and Quad Data Rate RAMs comprise a new family of products developed by Cypress
Semiconductor, Hitachi, IDT, Micron Technology, Inc. and Samsung.
APPLICATIO S
s
s
s
Bus Termination: DDR and QDR Memory, SSTL,
HSTL, ...
Notebook Computers, Desktop Servers
Tracking Power Supply
TYPICAL APPLICATIO
V
CC
5V TO 28V
1碌F
V
CC
I
ON
V
REF
RUN/SS
C
C
470pF
C
SS
0.1碌F
I
TH
R
C
20k
SGND
LTC3717
INTV
CC
BG
TG
SW
BOOST
R
ON
715k
V
DD
= 2.5V
M1
Si7840DP
C
B
0.22碌F
D
B
CMDSH-3
M2
Si7840DP
C
VCC
4.7碌F
D2
B320A
+
V
IN
2.5V TO 5.5V
C
IN
150碌F
6.3V
脳2
V
OUT
1.25V
C
OUT
鹵10A
180碌F
4V
脳2
EFFICIENCY (%)
L1
0.68碌H
+
+
D1
B320A
PGOOD
PGND
V
FB
3717 F01a
Figure 1. High Efficiency DDR Memory Termination Supply
sn3717 3717fs
U
Efficiency vs Load Current
100
90
80
70
60
50
40
30
20
10
0
0
2
4
6
8
10
LOAD CURRENT (A)
12
14
V
IN
= 5V
V
IN
= 2.5V
V
OUT
= 1.25V
3717 F01b
U
U
1

LTC3717EGN 產(chǎn)品屬性

  • LTC3717

  • 100

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - 專用型

  • -

  • 控制器，DDR，QDR

  • 4 V ~ 36 V

  • 1

  • 2 V ~ 18 V

  • -40°C ~ 85°C

  • 表面貼裝

  • 16-SSOP（0.154"，3.90mm 寬）

  • 16-SSOP

  • 管件

LTC3717EGN相關(guān)型號PDF文件下載

  • 型號
    版本
    描述
    廠商
    下載
  • 英文版
    500mA, Low Voltage, Very Low Dropout Linear Regulator
    LINER
  • 英文版
    300mA Micropower VLDO Linear Regulator
    Linear
  • 英文版
    1.5A Low Input Voltage VLDO Linear Regulator
    LINER
  • 英文版
    1.5A Low Input Voltage VLDO Linear Regulator
    Linear
  • 英文版
    300mA VLDO Linear Regulator with Charge Pump Bias Generator
    Linear
  • 英文版
    400mA Step-Up DC/DC Converter with Maximum Power Point Contr...
    Linear
  • 英文版
    Auto-Polarity, Ultralow Voltage Step-Up Converter and Power ...
    Linear
  • 英文版
    DC/DC CONVERTERl
    LINER
  • 英文版
    100mA Low Noise, Regulated Charge Pump Step-Up Converters
    Linear
  • 英文版
    100mA Ultralow Noise Charge Pump LED Supply with Output Curr...
    Linear
  • 英文版
    Low Noise, High Efficiency Charge Pump for White LEDs
    LINER
  • 英文版
    125mA Low Noise, High Efficiency Charge Pump for White LEDs
    Linear
  • 英文版
    Linear Technology [Low Noise Regulated Charge Pump in 2 X 2...
    LINER
  • 英文版
    Single Cell 350mA LED Driver
    LINER
  • 英文版
    Multidisplay LED Controller
    Linear
  • 英文版
    I2C Multidisplay LED Controller
    LINER
  • 英文版
    I2C Multidisplay LED Controller
    Linear
  • 英文版
    High Current Software Confi gurable Multidisplay LED Control...
    Linear
  • 英文版
    MAIN/CAM LED Controller in 3mm × 3mm QFN
    Linear
  • 英文版
    500mA Camera LED Charge Pump
    LINER

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務(wù)：
賣家服務(wù)：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線時間周一至周五
9:00-17:30

關(guān)注官方微信號，
第一時間獲取資訊。

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務(wù)的動力！意見一經(jīng)采納，將有感恩紅包奉上哦！