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| 型号： | LT3653IDCB#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 1.2 A BATTERY CHARGE CONTROLLER, 1650 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | 2 X 3 MM, LEAD FREE, PLASTIC, DFN-8 |
| 文件页数： | 1/12页 |
| 文件大小： | 155K |
| 代理商： | LT3653IDCB#PBF |
LT3653
1
3653f
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
1.2A, HV Input Regulator
with Output Current Limit for
Battery Charger Applications
The LT3653 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
efciency. 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.
The LT3653 control pin, VC, is available for external battery
tracking control, Bat-Track. The LT3653 will block output
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
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.
High Voltage Single-Cell Battery Charger Application
n Wide Input Range:
– Operation from 7.5V to 30V
– Overvoltage Lockout Protects Circuit Through 60V
Transients
n Operates with LTC Bat-Track Li-Ion Battery
Chargers to Maximize Efciency
n No Reverse Discharge Path from VOUT to VIN
n Programmable Output Current Limit
n Integrated BOOST Diode
n Thermal Protection
n Small Application Size
n Thermally Enhanced 2mm
× 3mm DFN Package
n Battery Powered Equipment
n Portable USB Devices – Cameras, MP3 Players,
PDAs
n Automotive Battery Regulation
n Multiple-Source Battery Chargers
Efciency vs Load Current
VIN
ILIM
VIN
7.5V TO 30V
TRANSIENT
TO 60V
0.1μF
SINGLE-CELL
Li-Ion
1.2A
SYSTEM
LOAD
10μF
4.7μH
3653 TA01a
LT3653
LTC4098
OUT
BAT
GND
BOOST
SW
ISENSE
VOUT
HVOK
VC
WALL
VC
4.7μF
27.4k
+
, 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.
OUTPUT CURRENT(A)
0.1
EFFICIENCY
(%)
100
90
70
50
80
60
40
0.7
3653 TA01a
1.1
1.3
0.9
0.5
0.3
VIN = 8V
VIN = 24V
VIN = 12V
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| LT3663EDCB#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:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| LT3663EDCB#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 |
| LT3663EMS8E#PBF | 功能描述:IC REG BUCK ADJ 1.2A 8MSOP 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:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| LT3663EMS8E#PBF | 制造商:Linear Technology 功能描述:IC STEP-DOWN REGULATOR MSOP-8 |
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