参数资料
型号: LTC3735EUHF
厂商: Linear Technology
文件页数: 26/32页
文件大小: 0K
描述: IC CTRLR DC/DC 2PH HI EFF 38-QFN
标准包装: 52
应用: 控制器,Intel 移动式 CPU
输出数: 1
输出电压: 0.7 V ~ 1.71 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 38-WFQFN 裸露焊盘
供应商设备封装: 38-QFN(5x7)
包装: 管件
LTC3735
APPLICATIONS INFORMATION
V IN
SW1
D1
L1
R SENSE1
V OUT
R IN
C IN
+
+
C OUT
R L
BOLD LINES INDICATE
HIGH, SWITCHING
CURRENT LINES.
KEEP LINES TO A
MINIMUM LENGTH.
SW2
D2
L2
R SENSE2
3735 F12
Figure 12. Instantaneous Current Path Flow in a Multiple Phase Switching Regulator
The ground terminations of the sychronous MOSFETs and
Schottky diodes should return to the negative plate(s) of
the input capacitor(s) with a short isolated PC trace since
very high switched currents are present. A separate isolated
path from the negative plate(s) of the input capacitor(s)
should be used to tie in the IC power ground pin (PGND)
and the signal ground pin (SGND). This technique keeps
inherent signals generated by high current pulses from
taking alternate current paths that have finite impedances
during the total period of the switching regulator. External
OPTI-LOOP compensation allows overcompensation for
PC layouts which are not optimized but this is not the
recommended design procedure.
Simplified Visual Explanation of How a 2-Phase
Controller Reduces Both Input and Output RMS Ripple
Current
A multiphase power supply significantly reduces the
amount of ripple current in both the input and output
capacitors. The RMS input ripple current is divided by,
and the effective ripple frequency is multiplied up by the
number of phases used (assuming that the input voltage
is greater than the number of phases used times the out-
put voltage). The output ripple amplitude is also reduced
by, and the effective ripple frequency is increased by the
number of phases used. Figure 13 graphically illustrates
the principle.
3735fa
26
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LTC3735EUHF#PBF 功能描述:IC CTRLR DC/DC 2PH HI EFF 38-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:2,000 系列:- 应用:控制器,DSP 输入电压:4.5 V ~ 25 V 输出数:2 输出电压:最低可调至 1.2V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:30-TFSOP(0.173",4.40mm 宽) 供应商设备封装:30-TSSOP 包装:带卷 (TR)
LTC3735EUHF#TR 功能描述:IC CTRLR DC/DC 2PH HI EFF 38-QFN RoHS:否 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
LTC3735EUHF#TRPBF 功能描述:IC CTRLR DC/DC 2PH HI EFF 38-QFN 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
LTC3736EGN 功能描述:IC REG CTRLR BUCK PWM CM 24-SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 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)
LTC3736EGN#PBF 功能描述:IC REG CTRLR BUCK PWM CM 24-SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:PolyPhase® 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