參數(shù)資料
型號： LTC1624
廠商： Linear Technology Corporation
英文描述： High Efficiency SO-8 N-Channel Switching Regulator Controller(SO-8封裝，高效率，N溝道開關穩(wěn)壓控制器)
中文描述： 高效率的SO - 8 N溝道開關穩(wěn)壓器控制器（以SO - 8封裝，高效率，?溝道開關穩(wěn)壓控制器）
文件頁數(shù)： 1/28頁
文件大?。?/td> 399K
代理商： LTC1624
1
LTC1624
FEATURES
DESCRIPTIO
N
U
The LTC
1624 is a current mode switching regulator
controller that drives an external N-channel power MOSFET
using a fixed frequency architecture. It can be operated in
all standard switching configurations including boost,
step-down, inverting and SEPIC. Burst Mode
TM
operation
provides high efficiency at low load currents. A maximum
high duty cycle limit of 95% provides low dropout operation
which extends operating time in battery-operated systems.
The operating frequency is internally set to 200kHz, allowing
small inductor values and minimizing PC board space. The
operating current level is user-programmable via an external
current sense resistor. Wide input supply range allows
operation from 3.5V to 36V (absolute maximum).
A multifunction pin (I
TH
/RUN) allows external
compensation for optimum load step response plus
shutdown. Soft start can also be implemented with the
I
TH
/RUN pin to properly sequence supplies.
I
N-Channel MOSFET Drive
I
Implements Boost, Step-Down, SEPIC
and Inverting Regulators
I
Wide V
IN
Range: 3.5V to 36V Operation
I
Wide V
OUT
Range: 1.19V to 30V in Step-Down
Configuration
I
±
1% 1.19V Reference
I
Low Dropout Operation: 95% Duty Cycle
I
200kHz Fixed Frequency
I
Low Standby Current
I
Very High Efficiency
I
Remote Output Voltage Sense
I
Logic-Controlled Micropower Shutdown
I
Internal Diode for Bootstrapped Gate Drive
I
Current Mode Operation for Excellent Line and
Load Transient Response
I
Available in an 8-Lead SO Package
I
Notebook and Palmtop Computers, PDAs
I
Cellular Telephones and Wireless Modems
I
Battery-Operated Digital Devices
I
DC Power Distribution Systems
I
Battery Chargers
TYPICAL APPLICATIO
N
U
Figure 1. High Efficiency Step-Down Converter
+
+
SENSE
–
I
TH
/RUN
V
FB
GND
V
IN
BOOST
TG
SW
LTC1624
1000pF
100pF
C
C
470pF
R
C
6.8k
D1
MBRS340T3
C
B
0.1
μ
F
R2
35.7k
R1
20k
C
OUT
100
μ
F
10V
×
2
M1
Si4412DY
L1
10
μ
H
R
SENSE
0.05
C
IN
22
μ
F
35V
×
2
V
3.3V
2A
V
4.8V TO 28V
1624 F01
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode is a trademark of Linear Technology Corporation.
High Efficiency SO-8
N-Channel Switching
Regulator Controller
APPLICATIO
S
U
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相關代理商/技術參數(shù)
參數(shù)描述
LTC1624CS8 功能描述:IC REG CTRLR BST FLYBK INV 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR)
LTC1624CS8#PBF 功能描述:IC REG CTRLR BST FLYBK INV 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 特色產(chǎn)品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標準包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 V 降壓:是 升壓:無 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤 包裝:Digi-Reel® 產(chǎn)品目錄頁面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR
LTC1624CS8#TR 功能描述:IC REG CTRLR BST FLYBK INV 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR)
LTC1624CS8#TRPBF 功能描述:IC REG CTRLR BST FLYBK INV 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標準包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無 升壓:是 回掃:無 反相:無 倍增器:無 除法器:無 Cuk:無 隔離:無 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤 包裝:帶卷 (TR)
LTC1624CS8PBF 制造商:Linear Technology 功能描述:LTC1624CS8PBF
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