参数资料
型号: LTC1624IS8
厂商: Linear Technology
文件页数: 1/28页
文件大小: 0K
描述: IC REG CTRLR BST FLYBK INV 8SOIC
标准包装: 100
PWM 型: 电流模式
输出数: 1
频率 - 最大: 225kHz
占空比: 95%
电源电压: 3.5 V ~ 36 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 管件
LTC1624
High Efficiency SO-8
N-Channel Switching
Regulator Controller
FEATURES
DESCRIPTIO N
s
s
s
s
s
s
s
s
s
s
s
s
s
s
N-Channel MOSFET Drive
Implements Boost, Step-Down, SEPIC
and Inverting Regulators
Wide V IN Range: 3.5V to 36V Operation
Wide V OUT Range: 1.19V to 30V in Step-Down
Configuration
± 1% 1.19V Reference
Low Dropout Operation: 95% Duty Cycle
200kHz Fixed Frequency
Low Standby Current
Very High Efficiency
Remote Output Voltage Sense
Logic-Controlled Micropower Shutdown
Internal Diode for Bootstrapped Gate Drive
Current Mode Operation for Excellent Line and
Load Transient Response
Available in an 8-Lead SO Package
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.
APPLICATIO N S
s
s
s
Notebook and Palmtop Computers, PDAs
Cellular Telephones and Wireless Modems
Battery-Operated Digital Devices
s
s
DC Power Distribution Systems
Battery Chargers
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode is a trademark of Linear Technology Corporation.
TYPICAL APPLICATIO N
1000pF
V IN
4.8V TO 28V
I TH /RUN
V FB
C C
470pF
R C
6.8k
100pF
SENSE – V IN
BOOST
LTC1624
TG
M1
Si4412DY
C B
0.1 μ F
R SENSE
0.05 ?
L1
10 μ H
+
C IN
22 μ F
35V
× 2
V OUT
GND
SW
D1
MBRS340T3
R2
3.3V
2A
35.7k
R1
20k
Figure 1. High Efficiency Step-Down Converter
+
C OUT
100 μ F
10V
× 2
1624 F01
1
相关PDF资料
PDF描述
LTC3785IUF#TRPBF IC REG CTRLR BST PWM VM 24-QFN
LTC3855IFE#TRPBF IC REG CTRLR BUCK PWM CM 38TSSOP
LT3748HMS#TRPBF IC REG CTRLR FLYBK ISO CM 16MSOP
LTC1628CG IC REG CTRLR BUCK PWM CM 28-SSOP
VI-271-EW-F2 CONVERTER MOD DC/DC 12V 100W
相关代理商/技术参数
参数描述
LTC1624IS8#PBF 功能描述:IC REG CTRLR BST FLYBK INV 8SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 特色产品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 标准包装:1 系列:PowerWise® PWM 型:电压模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.5 V ~ 18 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-5°C ~ 125°C 封装/外壳:32-WFQFN 裸露焊盘 包装:Digi-Reel® 产品目录页面:1303 (CN2011-ZH PDF) 其它名称:LM3754SQDKR
LTC1624IS8#PBF 制造商:Linear Technology 功能描述:DC/DC Converter IC
LTC1624IS8#TR 功能描述:IC REG CTRLR BST FLYBK INV 8SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX
LTC1624IS8#TRPBF 功能描述:IC REG CTRLR BST FLYBK INV 8SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX
LTC1624IS8PBF 制造商:Linear Technology 功能描述:N-Channel Sw. Regulator Controller SOIC8