- 您现在的位置：买卖IC网 > PDF目录13882 > LTC3633EUFD#TRPBF (Linear Technology)IC REG BUCK ADJ 3A DL 28QFN PDF资料下载
参数资料
| 型号： | LTC3633EUFD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 17/28页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 3A DL 28QFN |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 0.6 V ~ 14.7 V |
| 输入电压： | 3.6 V ~ 15 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 500kHz ~ 4MHz |
| 电流 - 输出： | 3A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 28-QFN（4x5） |
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页当前第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
LTC3633
APPLICATIONS INFORMATION
MODE/SYNC Operation
The MODE/SYNC pin is a multipurpose pin allowing both
mode selection and operating frequency synchroniza-
tion. Floating this pin or connecting it to INTV CC enables
Burst Mode operation for superior efficiency at low load
currents at the expense of slightly higher output voltage
ripple. When the MODE/SYNC pin is tied to ground, forced
continuous mode operation is selected, creating the lowest
fixed output ripple at the expense of light load efficiency.
The LTC3633 will detect the presence of the external clock
signal on the MODE/SYNC pin and synchronize the inter-
nal oscillator to the phase and frequency of the incoming
clock. The presence of an external clock will place both
regulators into forced continuous mode operation.
Output Voltage Tracking and Soft-Start
The LTC3633 allows the user to control the output voltage
ramp rate by means of the TRACKSS pin. From 0 to 0.6V, the
TRACKSS voltage will override the internal 0.6V reference
input to the error amplifier, thus regulating the feedback
voltage to that of the TRACKSS pin. When TRACKSS is
above 0.6V, tracking is disabled and the feedback voltage
will regulate to the internal reference voltage.
V OUT1
V OUT2
The voltage at the TRACKSS pin may be driven from an
external source, or alternatively, the user may leverage
the internal 1.4μA pull-up current source to implement
a soft-start function by connecting an external capacitor
(C SS ) from the TRACKSS pin to ground. The relationship
between output rise time and TRACKSS capacitance is
given by:
t SS = 430000Ω ? C SS
A default internal soft-start ramp forces a minimum soft-
start time of 400μs by overriding the TRACKSS pin input
during this time period. Hence, capacitance values less
than approximately 1000pF will not significantly affect
soft-start behavior.
When driving the TRACKSS pin from another source, each
channel’s output can be set up to either coincidentally or
ratiometrically track another supply’s output, as shown in
Figure 4. In the following discussions, V OUT1 refers to the
LTC3633 output 1 as a master channel and V OUT2 refers
to output 2 as a slave channel. In practice, either channel
can be used as the master.
To implement the coincident tracking in Figure 4a, con-
nect an additional resistive divider to V OUT1 and connect
its midpoint to the TRACKSS pin of the slave channel.
V OUT1
V OUT2
TIME
3633 F04a
TIME
3633 F04b
(4a) Coincident Tracking
(4b) Ratiometric Tracking
Figure 4. Two Different Modes of Output Voltage Tracking
3633fc
For more information www.linear.com/LTC3633
17
相关PDF资料 |
PDF描述 |
|---|---|
| ECA35DTAH | CONN EDGECARD 70POS R/A .125 SLD |
| FSM08DSEN | CONN EDGECARD 16POS .156 EYELET |
| VI-J3D-EY-S | CONVERTER MOD DC/DC 85V 50W |
| ECA35DTAD | CONN EDGECARD 70POS R/A .125 SLD |
| 16ZL120MEFC8X7 | CAP ALUM 120UF 16V 20% RADIAL |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3633IFE#PBF | 功能描述:IC REG BUCK ADJ 3A DL 28TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 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:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LTC3633IFE#TRPBF | 功能描述:IC REG BUCK ADJ 3A DL 28TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 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:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LTC3633IUFD#PBF | 功能描述:IC REG BUCK ADJ 3A DL 28QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 产品培训模块:MIC23xxx HyperLight Load™ Regulators 标准包装:5,000 系列:HyperLight Load® 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.8V 输入电压:2.7 V ~ 5.5 V PWM 型:混合物 频率 - 开关:4MHz 电流 - 输出:2A 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:8-VFDFN 裸露焊盘，8-MLF? 包装:带卷 (TR) 供应商设备封装:8-MLF?（2x2） 产品目录页面:1094 (CN2011-ZH PDF) 其它名称:576-3303-2 |
| LTC3633IUFD#TRPBF | 功能描述:IC REG BUCK ADJ 3A DL 28QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 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:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LTC3633IUFDPBF | 制造商:Linear Technology 功能描述:Conv DC-DC Dual Step-Down 3.6-15V QFN28 |
发布紧急采购，3分钟左右您将得到回复。