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| 型号： | LT3653EDCB#TRMPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 1.2A 8DFN |
| 标准包装： | 1 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 4.8 V ~ 6 V |
| 输入电压： | 7.5 V ~ 30 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.5MHz |
| 电流 - 输出： | 1.2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN 裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 8-DFN（3x2） |
| 产品目录页面： | 1332 (CN2011-ZH PDF) |
| 其它名称： | LT3653EDCB#TRMPBFDKR |
LT3653
1.2A, HV Input Regulator
with Output Current Limit for
Battery Charger Applications
FEATURES
DESCRIPTION
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Wide Input Range:
– Operation from 7.5V to 30V
– Overvoltage Lockout Protects Circuit Through 60V
Transients
Operates with LTC Bat-Track? Li-Ion Battery
Chargers to Maximize Ef?ciency
No Reverse Discharge Path from V OUT to V IN
Programmable Output Current Limit
Integrated BOOST Diode
Thermal Protection
Small Application Size
Thermally Enhanced 2mm × 3mm DFN Package
The LT ? 3653 is a monolithic current mode PWM step-down
regulator with programmable output current limit. Typically,
it is used with battery charger power path controllers to
pre-regulate the output and optimize the battery charger
ef?ciency. Output current limit provides accurate control
over system power dissipation.
The wide operating input voltage range of 7.5V to 30V
suits the LT3653 to a variety of input sources, including
unregulated 12V wall adapters, 24V industrial supplies,
Firewire and automotive power. Input overvoltage protec-
tion allows the LT3653 to handle 60V input transients.
APPLICATIONS
The LT3653 control pin, V C , is available for external battery
tracking control, Bat-Track. The LT3653 will block output
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Battery Powered Equipment
Portable USB Devices – Cameras, MP3 Players,
PDAs
Automotive Battery Regulation
Multiple-Source Battery Chargers
discharge during an open or shorted input.
The HVOK pin indicates that the internal bias supplies
are present and no faults have occurred (i.e., overtem-
perature and input overvoltage and undervoltage). The
LT3653 includes a 1.5MHz frequency oscillator, internal
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
Bat-Track is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
compensation, and an internal boost diode to minimize the
number of external components. The LT3653 is available
in an 8-lead (2mm × 3mm) package with exposed pads
for low thermal resistance.
TYPICAL APPLICATION
High Voltage Single-Cell Battery Charger Application
Ef?ciency vs Load Current
V IN
0.1μF
100
7.5V TO 30V
TRANSIENT
TO 60V
4.7μF
V IN
LT3653
BOOST
SW
4.7μH
90
80
V IN = 8V
V IN = 12V
I LIM
I SENSE
V OUT
1.2A
SYSTEM
LOAD
70
V IN = 24V
27.4k
10μF
OUT
60
HVOK
WALL
LTC4098
50
GND
V C
3653 TA01a
V C
BAT
+
SINGLE-CELL
Li-Ion
40
0.1
0.3
0.5 0.7 0.9
OUTPUT CURRENT(A)
1.1 1.3
3653 TA01a
3653f
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3653EDCB-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.2A, HV Input Regulator with Output Current Limit for Battery Charger Applications |
| LT3653IDCB#TRMPBF | 功能描述:IC REG BUCK ADJ 1.2A 8DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:升压（升压） 输出类型:两者兼有 输出数:1 输出电压:5V，2 V ~ 16.5 V 输入电压:2 V ~ 16.5 V PWM 型:- 频率 - 开关:45kHz 电流 - 输出:50mA 同步整流器:无 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 包装:管件 供应商设备封装:8-PDIP |
| LT3653IDCB#TRPBF | 功能描述:IC REG BUCK ADJ 1.2A 8DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
| LT3653IDCB-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.2A, HV Input Regulator with Output Current Limit for Battery Charger Applications |
| LT3653IDCB-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.2A, HV Input Regulator with Output Current Limit for Battery Charger Applications |
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