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

LTC1267-ADJ5 Datasheet

  • LTC1267-ADJ5

  • Dual High Efficiency Synchronous Step-Down Switching Regulat...

  • 16頁(yè)

  • LINER

掃碼查看芯片數(shù)據(jù)手冊(cè)

上傳產(chǎn)品規(guī)格書(shū)

PDF預(yù)覽

LTC1267
LTC1267-ADJ/LTC1267-ADJ5
Dual High Efficiency
Synchronous Step-Down
Switching Regulators
FEATURES
s
s
s
s
s
DESCRIPTIO
s
s
s
s
s
Dual Outputs: 3.3V and 5V, Two Adjustables or
Adjustable and 5V
Wide V
IN
Range: 4V to 40V
Ultra-High Efficiency: Up to 95%
Low Supply Current in Shutdown: 20
碌
A
Current Mode Operation for Excellent Line and Load
Transient Response
High Efficiency Maintained Over a Wide Output
Current Range
Independent Micropower Shutdown
Very Low Dropout Operation: 100% Duty Cycle
Synchronous FET Switching for High Efficiency
Available in Standard 28-Pin SSOP
The LTC
廬
1267 series are dual synchronous step-down
switching regulator controllers featuring automatic Burst
Mode
TM
operation to maintain high efficiencies at low
output currents. The LTC1267 is composed of two sepa-
rate regulator blocks, each driving a pair of external comple-
mentary power MOSFETs at switching frequencies up to
400kHz. The LTC1267 uses a constant off-time current-
mode architecture to provide constant ripple current in the
inductor and provide excellent line and load transient
response.
A separate pin and on-board switch allow the MOSFET
driver power to be derived from the regulated output
voltage, providing significant efficiency improvement when
operating at high input voltage. The output current level is
user-programmable via an external current sense resistor.
The LTC1267 series is ideal for applications requiring dual
output voltages with high conversion efficiencies over a
wide load current range in a small amount of board space.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode is a trademark of Linear Technology Corporation.
APPLICATI
s
s
s
s
S
Notebook and Palmtop Computers
Battery-Operated Digital Devices
Portable Instruments
DC Power Distribution Systems
TYPICAL APPLICATI
+
C
IN3
100碌F
50V
V
IN
5.4V to 25V
+
3.3碌F
P-CH
Si9435DY
1N4148
8
4
5
14
1000pF
13
12
SENSE
鈥?/div>
3
SHDN3
NGATE 3
V
CC3
PGATE 3
PDRIVE 3
SENSE
+
3
0.15碌F
3
CAP3
1
V
CC
2
V
IN
0.15碌F
1N4148
27
26
28
21
0.1碌F
P-CH
Si9435DY
V
OUT3
3.3V
2A
R
SENSE3
0.05鈩?/div>
L3
20碌H
0.1碌F
D3
MBRS140T3
6
N-CH
Si9410DY
MSHDN CAP5 EXT V
CC
V
CC5
25
PGATE 5
24
PDRIVE 5
18
SENSE
+
5
LTC1267
17
SENSE
鈥?/div>
5
19
SHDN5
23
NGATE 5
I
TH5
15
C
T5
16
SGND5 PGND5
20
22
+
C
OUT3
220碌F
10V
脳
2
PGND3 SGND3 C
T3
7
11
9
I
TH3
10
N-CH
Si9410DY
C
C3
C
C5
C
T5
C
T3
270pF 3300pF 3300pF 270pF
R
SENSE3
: KRL SL-1R050J
L3: COILTRONICS CTX20-4
R
C3
1k
R
C5
1k
R
SENSE5
: KRL SL-1R050J
L5: COILTRONICS CTX33-4
LTC1267 鈥?F01
SHDN3, SHDN5, MSHDN
0V = NORMAL, >2V = SHDN
Figure 1. High Efficiency Dual 3.3V, 5V
U
+
+
3.3碌F
C
IN5
100碌F
50V
L5
33碌H
R
SENSE5
0.05鈩?/div>
V
OUT5
5V
2A
1000pF
D5
MBRS140T3
UO
UO
+
C
OUT5
220碌F
10V
脳
2
1

LTC1267-ADJ5相關(guān)型號(hào)PDF文件下載

  • 型號(hào)
    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(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(shí)間周一至周五
9:00-17:30

關(guān)注官方微信號(hào)，
第一時(shí)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(kù)提出的寶貴意見(jiàn)，您的參與是維庫(kù)提升服務(wù)的動(dòng)力！意見(jiàn)一經(jīng)采納，將有感恩紅包奉上哦！