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| 型号： | LTC3617IUDD#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 14 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PQCC24 |
| 封装： | 3 X 5 MM, LEAD FREE, PLASTIC, QFN-24 |
| 文件页数： | 1/20页 |
| 文件大小： | 471K |
| 代理商： | LTC3617IUDD#PBF |
LTC3617
1
3617fa
Features
applications
Description
±6A Monolithic Synchronous
Step-Down Regulator
for DDR Termination
The LTC3617 is a high efficiency monolithic synchronous
buckregulatorutilizingacurrentmode,constantfrequency
architecture. It operates from an input voltage range of
2.25V to 5.5V and provides a regulated output voltage
equal to 0.5 VDDQIN while sourcing and sinking up to
6A of load current. An internal amplifier provides a VTTR
output voltage equal to 0.5 VDDQIN with an output cur-
rent capability of ±10mA.
The operating frequency is externally programmable up to
4MHz, allowing the use of small surface mount inductors.
For switching-noise-sensitive applications, the LTC3617
can be synchronized to an external clock up to 4MHz.
ForcedcontinuousmodeoperationintheLTC3617reduces
noise and RF interference. Adjustable external compensa-
tion allows the transient response to be optimized over a
wide range of loads and output capacitors.
The internal synchronous switch increases efficiency and
eliminatestheneedforanexternalcatchdiode,minimizing
external component count and board space. The LTC3617
is offered in a leadless 24-pin 3mm
× 5mm thermally
enhanced QFN package.
L
, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners. Protected by U.S. Patents, including 6580258, 5481178, 6498466, 6611131.
n
±6A Output Current
n
2.25V to 5.5V Input Voltage Range
n
±10mV Output Voltage Accuracy
n
Optimized for Low Output Voltages Down to 0.5V
n
High Efficiency
n
Integrated Buffer for VTTR = VDDQIN 0.5
n
Shutdown Current: <1A
n
Adjustable Switching Frequency: Up to 4MHz
n
Optional Internal Compensation
n
Internal Soft-Start
n
Power Good Status Output
n
Input Overvoltage Protected
n
Thermally Enhanced 24-Pin 3mm
× 5mm
QFN Package
n
DDR Termination
n
Supports DDR, DDR2 and DDR3 Standards
n
Tracking Supplies
typical application
Efficiency and Power Loss
vs Load Current
LOAD CURRENT (A)
30
EFFICIENCY
(%)
POWER
LOSS
(W)
90
100
20
10
80
50
70
60
40
0.1
1
10
3617 TA01b
0
1
10
0.1
0.01
0.1F
VREF
1.25V
±10mA
RUN
VDDQIN
RT
PGOOD
ITH
SGND
PGND
VIN
2.5V
VTTR
SVIN
LTC3617
SW
PVIN
0.15H
3617 TA01a
22F
×4
SYNC
VFB
47F
×2
VTT
1.25V
±6A
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| LTC3618EFE#PBF | 功能描述:IC REG DUAL SYNC 3A BUCK 24TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC3618EFE#TRPBF | 功能描述:IC REG DUAL SYNC 3A BUCK 24TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC3618EUF#PBF | 功能描述:IC REG DUAL SYNC 3A BUCK 24QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC3618EUF#TRPBF | 功能描述:IC REG DUAL SYNC 3A BUCK 24QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC3618IFE#PBF | 功能描述:IC REG DUAL SYNC 3A BUCK 24TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
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