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

LTC1622IS8 Datasheet

  • LTC1622IS8

  • Low Input Voltage Current Mode Step-Down DC/DC Controller

  • 16頁

  • LINER

掃碼查看芯片數(shù)據(jù)手冊

上傳產(chǎn)品規(guī)格書

PDF預覽

LTC1622
Low Input Voltage
Current Mode Step-Down
DC/DC Controller
FEATURES
s
s
s
s
s
s
s
s
s
DESCRIPTIO
s
s
s
s
High Efficiency
Constant Frequency 550kHz Operation
V
IN
Range: 2V to 10V
Multiampere Output Currents
OPTI-LOOP
TM
Compensation Minimizes C
OUT
Selectable, Burst Mode Operation
Low Dropout Operation: 100% Duty Cycle
Synchronizable up to 750kHz
Current Mode Operation for Excellent Line and Load
Transient Response
Low Quiescent Current: 350碌A(chǔ)
Shutdown Mode Draws Only 15碌A(chǔ) Supply Current
鹵1.9%
Reference Accuracy
Available in 8-Lead MSOP
APPLICATIO S
s
s
s
s
s
s
s
1- or 2-Cell Li-Ion Powered Applications
Cellular Telephones
Wireless Modems
Portable Computers
Distributed 3.3V, 2.5V or 1.8V Power Systems
Scanners
Battery-Powered Equipment
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode and OPTI-LOOP are a trademarks of Linear Technology Corporation.
The LTC
廬
1622 is a constant frequency current mode step-
down DC/DC controller providing excellent AC and DC load
and line regulation. The device incorporates an accurate
undervoltage feature that shuts the LTC1622 down when
the input voltage falls below 2V.
The LTC1622 boasts a
鹵1.9%
output voltage accuracy and
consumes only 350碌A(chǔ) of quiescent current. For applica-
tions where efficiency is a prime consideration and the
load current varies from light to heavy, the LTC1622 can
be configured for Burst Mode
TM
operation. Burst Mode
operation enhances low current efficiency and extends
battery run time. Burst Mode operation is inhibited during
synchronization or when the SYNC/MODE pin is pulled low
to reduce noise and possible RF interference.
High constant operating frequency of 550kHz allows the
use of a small inductor. The device can also be synchro-
nized up to 750kHz for special applications. The high
frequency operation and the available 8-lead MSOP pack-
age create a high performance solution in an extremely
small amount of PCB area.
To further maximize the life of the battery source, the
P-channel MOSFET is turned on continuously in dropout
(100% duty cycle). In shutdown, the device draws a mere
15碌A(chǔ).
TYPICAL APPLICATIO
8
2
R1
10k
C3
220pF
4
470pF
V
IN
I
TH
SENSE
鈥?/div>
1
V
IN
2.5V TO 8.5V
R2
0.03鈩?/div>
Si3443DV L1
4.7碌H
D1
IR10BQ015
R3
159k
R4
75k
L1: MURATA LQN6C-4R7
R2: DALE WSL-1206 0-03鈩?/div>
C1
10碌F
10V
Efficiency vs Load Current with
Burst Mode Operation Enabled
100
V
IN
= 4.2V
90
EFFICIENCY (%)
V
IN
= 3.3V
7
PDRV
LTC1622
5
SYNC/MODE
6
80
V
IN
= 6V
70
60
50
V
OUT
= 2.5V
R
SENSE
= 0.03鈩?/div>
1
100
1000
10
LOAD CURRENT (mA)
5000
1622 F01b
V
OUT
2.5V
1.5A
RUN/SS
GND
V
FB
3
+
C2
47碌F
6V
C1: TAIYO YUDEN CERAMIC EMK325BJ106MNT
C2: SANYO POSCAP 6TPA47M
D1: INTERNATIONAL RECTIFIER IR10BQ015
1622 F01a
40
Figure 1. High Efficiency Step-Down Converter
U
V
IN
= 8.4V
U
U
1

LTC1622IS8 產(chǎn)品屬性

  • LTC1622

  • 100

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - DC DC 切換控制器

  • -

  • 電流模式

  • 1

  • 625kHz

  • 100%

  • 2 V ~ 10 V

  • 是

  • 無

  • 無

  • 無

  • 無

  • 無

  • 無

  • 無

  • -45°C ~ 85°C

  • 8-SOIC（0.154"，3.90mm 寬）

  • 管件

  • Q1135916

LTC1622IS8相關(guān)型號PDF文件下載

  • 型號
    版本
    描述
    廠商
    下載
  • 英文版
    Dual Micropower Comparator
    LINER
  • 英文版
    DUAL MICROPOWER COMPARATOR
    LINER [Lin...
  • 英文版
    Dual Micropower Comparator
    LINER [Lin...
  • 英文版
    BANG-BANG Controller
    LINER
  • 英文版
    BANG-BANG Controller
    LINER [Lin...
  • 英文版
    Window Comparator
    LINER
  • 英文版
    Window Comparator
    LINER [Lin...
  • 英文版
    Window Comparator
    LINER [Lin...
  • 英文版
    2-Channel Differential Input 16-Bit No Latency DS ADC
    LINER
  • 英文版
    2-Channel Differential Input 24-Bit No Latency DS ADC
    LINER [Lin...
  • 英文版
    2-Channel Differential Input 16-Bit No Latency DS ADC
    LINER [Lin...
  • 英文版
    Dual Precision Intrumentation Switched-Capacitor Building Bl...
    LINER [Lin...
  • 英文版
    Switched Capacitor Voltage Converter
    LINER
  • 英文版
    Switched Capacitor Voltage Converter
    LINER [Lin...
  • 英文版
    Programmable Micropower Hex Translator/ Receiver/Driver
    LINER
  • 英文版
    Programmable Micropower Hex Translator/ Receiver/Driver
    LINER [Lin...
  • 英文版
    “Inductorless” 5V to + 5V Converter
    LINER
  • 英文版
    “Inductorless” 5V to + 5V Converter
    LINER [Lin...
  • 英文版
    Dual Micropower Chopper Stabilized Operational Amplifier wit...
    LINER
  • 英文版
    Dual Micropower Zero-Drift Operational Amplifier with Intern...
    LINER [Lin...

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：
賣家服務：
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的動力！意見一經(jīng)采納，將有感恩紅包奉上哦！