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

LTC1628I-PG Datasheet

  • LTC1628I-PG

  • High Efficiency, 2-Phase Synchronous Step-Down Switching Reg...

  • 32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

LTC1628/LTC1628-PG
High Efficiency, 2-Phase
Synchronous Step-Down Switching Regulators
FEATURES
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
Out-of-Phase Controllers Reduce Required Input
Capacitance and Power Supply Induced Noise
OPTI-LOOP
TM
Compensation Minimizes C
OUT
Dual N-Channel MOSFET Synchronous Drive
鹵1%
Output Voltage Accuracy
Power Good Output Voltage Monitor (LTC1628-PG)
DC Programmed Fixed Frequency 150kHz to 300kHz
Wide V
IN
Range: 3.5V to 36V Operation
Very Low Dropout Operation: 99% Duty Cycle
Adjustable Soft-Start Current Ramping
Foldback Output Current Limiting
Latched Short-Circuit Shutdown with Defeat Option
Output Overvoltage Protection
Remote Output Voltage Sense
Low Shutdown I
Q
: 20碌A
5V and 3.3V Standby Regulators
Small 28-Lead SSOP Package
Selectable Constant Frequency or Burst Mode
TM
Operation
The LTC
廬
1628/LTC1628-PG are high performance dual
step-down switching regulator controllers that drive all
N-channel synchronous power MOSFET stages. A con-
stant frequency current mode architecture allows adjust-
ment of the frequency up to 300kHz. Power loss and noise
due to the ESR of the input capacitors are minimized by
operating the two controller output stages out of phase.
OPTI-LOOP compensation allows the transient response
to be optimized over a wide range of output capacitance and
ESR values. The precision 0.8V reference and power good
output indicator are compatible with future microproces-
sor generations, and a wide 3.5V to 30V (36V maximum)
input supply range encompasses all battery chemistries.
A RUN/SS pin for each controller provides both soft-start
and optional timed, short-circuit shutdown. Current
foldback limits MOSFET dissipation during short-circuit
conditions when overcurrent latchoff is disabled. Output
overvoltage protection circuitry latches on the bottom
MOSFET until V
OUT
returns to normal. The FCB mode pin
can select among Burst Mode, constant frequency mode
and continuous inductor current mode or regulate a
secondary winding. The LTC1628-PG includes a power
good output pin that replaces the FLTCPL, fault coupling
control pin of the LTC1628.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode and OPTI-LOOP are trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
s
Notebook and Palmtop Computers, PDAs
Battery Chargers
Portable Instruments
Battery-Operated Digital Devices
DC Power Distribution Systems
TYPICAL APPLICATIO
L1
6.3碌H
+
4.7碌F
M1
C
B1
, 0.1碌F
D3
V
IN
TG1
BOOST1
SW1
INTV
CC
TG2
BOOST2
SW2
LTC1628
BG2
PGND
SENSE2
+
1000pF
SENSE1
鈥?/div>
V
OSENSE1
SENSE2
鈥?/div>
V
OSENSE2
I
TH2
RUN/SS2
C
SS2
0.1碌F
C
C2
220pF
R
C2
15k
D4
1碌F
CERAMIC
M3
C
B2
, 0.1碌F
D1
M2
BG1
SGND
SENSE1
+
R
SENSE1
0.01鈩?/div>
V
OUT1
5V
5A
1000pF
+
C
OUT1
47碌F
6V
SP
R2
105k
1%
R1
20k
1%
C
C1
220pF
R
C1
15k
I
TH1
RUN/SS1
C
SS1
0.1碌F
M1, M2, M3, M4: FDS6680A
Figure 1. High Efficiency Dual 5V/3.3V Step-Down Converter
U
V
IN
5.2V TO 28V
C
IN
22碌F
50V
CERAMIC
L2
6.3碌H
M4
D2
R
SENSE2
0.01鈩?/div>
V
OUT2
3.3V
5A
C
OUT
56碌F
6V
SP
R3
20k
1%
R4
63.4k
1%
U
U
+
1628 F01
1

LTC1628I-PG相關型號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！