- 您现在的位置：买卖IC网 > PDF目录80295 > LTC4012IUF-2#PBF (LINEAR TECHNOLOGY CORP) SWITCHING CONTROLLER, 633 kHz SWITCHING FREQ-MAX, PQCC20 PDF资料下载
参数资料
| 型号： | LTC4012IUF-2#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING CONTROLLER, 633 kHz SWITCHING FREQ-MAX, PQCC20 |
| 封装： | 4 X 4 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, MO-220WGGD-1, QFN-20 |
| 文件页数： | 1/28页 |
| 文件大小： | 381K |
| 代理商： | LTC4012IUF-2#PBF |
当前第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
4012fa
LTC4012/
LTC4012-1/LTC4012-2
Features
applications
Description
High Efficiency,
Multi-Chemistry Battery Charger
with PowerPath Control
The LTC4012 is a constant-current/constant-volt-
age battery charger controller. It uses a synchronous
quasi-constant frequency PWM control architecture
that will not generate audible noise with ceramic bulk
capacitors. Charge current is set by external resis-
tors and can be monitored as an output voltage.
With no built-in termination, the LTC4012 family charges
a wide range of batteries under external control.
TheLTC4012featuresfullyadjustableoutputvoltage,while
theLTC4012-1andLTC4012-2canbepin-programmedfor
Lithium-Ion/Polymer battery packs of 1-, 2-, 3- or 4-series
cells. The LTC4012-1 provides output voltage of 4.1V/cell
and the LTC4012-2 is a 4.2V/cell version.
ThedeviceincludesACadapterinputcurrentlimiting,which
maximizes charge rate for a fixed input power level. An
external sense resistor programs the input current limit,
and the ICL status pin indicates reduced charge current as
a result of AC adapter current limiting. Ideal diode control
at the adaptor input improves charger efficiency.
The CHRG status pin is active during all charging modes,
including special indication for low charge current.
n
General Purpose Battery Charger Controller
n
Efficient 550kHz Synchronous Buck PWM Topology
n
±0.5% Output Float Voltage Accuracy
n
Programmable Charge Current: 4% Accuracy
n
Programmable AC Adapter Current Limit:
3% Accuracy
n
No Audible Noise with Ceramic Capacitors
n
INFET Low Loss Ideal Diode PowerPath Control
n
Wide Input Voltage Range: 6V to 28V
n
Wide Output Voltage Range: 2V to 28V
n
Indicator Outputs for AC Adapter Present, Charging,
C/10 Current Detection and Input Current Limiting
n
Analog Charge Current Monitor
n
Micropower Shutdown
n
20-Pin 4mm
× 4mm × 0.75mm QFN Package
n
Notebook Computers
n
Portable Instruments
n
Battery Backup Systems
Efficiency at DCIN = 20V
L
, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
PowerPath and ThinSOT are trademarks of Linear Technology Corporation. All other trademarks
are the property of their respective owners. Protected by U.S. Patents including 5723970.
CLP
FROM
ADAPTER
13V TO 28V
0.1F
5.1k
25m
3.01k
0.1F
6.8H
20F
33m
INFET
0.1F
2F
0.1F
6.04k
26.7k
LTC4012
DCIN
ACP
CHRG
ICL
SHDN
ITH
PROG
CLN
BOOST
TGATE
SW
INTVDD
BGATE
TO/FROM
MCU
GND
CSP
CSN
BAT
FBDIV
VFB
20F
POWER TO
SYSTEM
4.7nF
32.8k
4012 TA01
12.3V
Li-Ion
BATTERY
3.01k
301k
+
CHARGE CURRENT (A)
0
70
EFFICIENCY
(%)
POWER
LOSS
(mW)
75
80
85
90
100
1000
10000
0.5
1
1.5
2
4012 TA02
2.5
3
95
PART
LTC4009
LTC4012
INFET
X
DCDIV
X
PIN NAME
VOUT = 12.3V
RSENSE = 33m
RIN = 3.01k
RPROG = 26.7k
EFFICIENCY
POWER LOSS
typical application
相关PDF资料 |
PDF描述 |
|---|---|
| LTC4012IUF-2#TRPBF | SWITCHING CONTROLLER, 633 kHz SWITCHING FREQ-MAX, PQCC20 |
| LTC3611EWP#TR | 10 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PQCC64 |
| LT3509EMSE#PBF | 1.2 A DUAL SWITCHING CONTROLLER, 2500 kHz SWITCHING FREQ-MAX, PDSO16 |
| LQN-1.5/50-D12MB-C | DC-DC REG PWR SUPPLY MODULE |
| LKP5740-7ERD6TB1 | 2-OUTPUT 250 W AC-DC PWR FACTOR CORR MODULE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4012IUF-3#PBF | 功能描述:IC BATT CHRGR MC HI-EFF 20-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
| LTC4012IUF-3#TRPBF | 功能描述:IC CTLR BATT CHARGER CC/CV 20QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 功能:电池监控器 电池化学:碱性，锂离子，镍镉，镍金属氢化物 电源电压:1 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 供应商设备封装:SOT-6 包装:带卷 (TR) |
| LTC4012IUF-3-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control |
| LTC4012IUF-3-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Efficiency, Multi-Chemistry Battery Charger with PowerPath Control |
| LTC4020EUHF#PBF | 制造商:Linear Technology 功能描述:Battery Charger Lead-Acid/Li-FePO4/Li-Ion/Li-Pol 20000mA 55V 38-Pin QFN EP 制造商:Linear Technology 功能描述:IC BATT CHARGER 55V BB 38QFN 制造商:Linear Technology 功能描述:BATTERY CHARGER, 20A, QFN-38 制造商:Linear Technology 功能描述:BATTERY CHARGER, 20A, QFN-38, Input Voltage:55V, Battery Charge Voltage:55V, Charge Current Max:20A, Battery IC Case Style:QFN, No. of Pins:38, No. of Series Cells:12, Operating Temperature Min:-40C, Operating Temperature Max:125C , RoHS Compliant: Yes |
发布紧急采购，3分钟左右您将得到回复。