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参数资料
| 型号： | LTC3853IUJ#TR |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 0.15 A DUAL SWITCHING CONTROLLER, 830 kHz SWITCHING FREQ-MAX, PQCC40 |
| 封装： | 6 X 6 MM, PLASTIC, QFN-40 |
| 文件页数： | 1/36页 |
| 文件大小： | 1780K |
| 代理商： | LTC3853IUJ#TR |
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LTC3853
1
3853fa
TYPICAL APPLICATION
FEATURES
DESCRIPTION
Triple Output,
Multiphase Synchronous
Step-Down Controller
The LTC3853 is a high performance triple output step-
downswitchingregulatorcontrollerthatdrivesallN-chan-
nel synchronous power MOSFET stages. Power loss and
supply noise are minimized by operating the output stages
out of phase. The part can be configured as a dual phase
controller plus a single phase controller if needed. The
part can also be configured to provide a single 3-phase
output for even higher output currents.
A wide 4.5V to 24V (28V maximum) input voltage sup-
ply range encompasses most battery chemistries and
intermediate bus voltages. Phase 3 can regulate output
voltages up to 13.5V. A constant frequency current mode
architecture allows for a phase-lockable frequency up to
750kHz.
Independent TK/SS pins for each output ramps the output
voltagesandcanbeconfiguredforcoincidentorratiometric
tracking. Current foldback limits MOSFET heat dissipation
during short-circuit conditions. The MODE/PLLIN pin
selects among Burst Mode operation, pulse-skipping or
continuous inductor current modes.
High Efficiency Triple 5V/3.3V/1.2V Step-Down Converter
n
Triple, 120° Phased Controllers Reduce Required
Input Capacitance and Power Supply Induced Noise
n
Configurable as a 180° Dual Phase Controller Plus a
Single Phase Controller
n
The Third Phase Can Regulate Up to a 13.5V Output
n
High Efficiency: Up to 92%
n
RSENSE or DCR Current Sensing
n
±0.75% 0.8V Output Voltage Accuracy
n
Phase-Lockable Fixed Frequency 250kHz to 750kHz
n
Supports Pre-Biased Outputs
n
Dual N-Channel MOSFET Synchronous Drive
n
Wide VIN Range: 4.5V to 24V Operation (28V Abs Max)
n
Adjustable Soft-Start Current Ramping or Tracking
n
Foldback Output Current Limiting
n
Output Overvoltage Protection
n
Dual Power Good Output Voltage Monitors
n
40-Lead 6mm × 6mm QFN Package
L
, LT, LTC, LTM, Linear Technology, Burst Mode and the Linear logo are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners. Protected by U.S. Patents, including 5481178, 5705919, 5929620, 6100678, 6144194,
6177787, 6304066, 6580258.
TG1
TG2
BOOST1,2,3
SW1
SW2
BG1
BG2
SENSE1+
SENSE2+
SENSE1–
SENSE2–
VFB1
VFB2
ITH1,2,3
VIN
INTVCC
LTC3853
MODE/PLLIN
20k
FREQ/PLLFLTR
ILIM
PGND
PGOOD12
SGND
TK/SS1,2,3
VFB3
SENSE3–
SENSE3+
SW3
TG3
BG3
RUN1,2,3
PGOOD3
2.2k
15k
20k
63.4k
0.1F
4.7F
10k
fIN
500kHz
VOUT1
5V
5A
VOUT2
3.3V
5A
20k
1k
2.2k
VOUT3
1.2V
5A
VIN
7V TO 24V
1500pF
100F
10V
220pF
10nF
22F
50V
0.1F
2.2H
1H
0.1F
SW1,2,3
0.1F
+
100F
6V
+
100F
6V
+
10k
105k
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| LTC3853EUJ#TR | 0.15 A DUAL SWITCHING CONTROLLER, 830 kHz SWITCHING FREQ-MAX, PQCC40 |
| LTC3853EUJ | 0.15 A DUAL SWITCHING CONTROLLER, 830 kHz SWITCHING FREQ-MAX, PQCC40 |
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| LTC4075HVXEDD#TR | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO10 |
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| LTC3854EDDB#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 12-DFN 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:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 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:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LTC3854EMSE#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 12-MSOP 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 |
| LTC3854EMSE#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 12-MSOP 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:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 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:24-WQFN 裸露焊盘 包装:带卷 (TR) |
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