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参数资料
| 型号： | LTC3427EDC#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 9/12页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC ADJ 0.5A 6DFN |
| 标准包装： | 2,500 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.8 V ~ 5.25 V |
| 输入电压： | 1.8 V ~ 5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.25MHz |
| 电流 - 输出： | 500mA |
| 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： | 6-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 6-DFN-EP（2x2） |
LTC3427
APPLICATIO S I FOR ATIO
V IN > V OUT Operation
The LTC3427 will maintain voltage regulation when the
input voltage is above the output voltage. This is achieved
by terminating the switching of the synchronous P-chan-
nel MOSFET and applying V IN statically on its gate. This
will ensure the volt ? seconds across the inductor reverse
during the time current is flowing to the output. Since this
mode will dissipate more power in the LTC3427, the
maximum output current is limited in order to maintain an
acceptable junction temperature and is given by:
Short-Circuit Protection
The LTC3427 output disconnect feature allows output
short circuit while maintaining a maximum internally set
current limit. However, the LTC3427 also incorporates
internal features such as current limit foldback and ther-
mal shutdown for protection from an excessive overload
or short circuit. During a prolonged short circuit the
current limit folds back to a typical value of approximately
400mA should V OUT drop below 950mV. This 400mA
current limit remains in effect until V OUT exceeds approxi-
I OUT ( MAX ) =
125 – T A
85 ? ?? ( V IN + 1 . 5 ) – V OUT ??
mately 1V, at which time the nominally internally set
current limit is restored.
where T A = ambient temperature.
For example at V IN = 4.5V, V OUT = 3.3V, and T A = 85 ° C, the
maximum output current is 145mA.
3427fa
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相关代理商/技术参数 |
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| LTC3428 | 制造商:LINER 制造商全称:Linear Technology 功能描述:4A, 2MHz Dual Phase Step-Up DC/DC Converter in 3mm 3mm DFN |
| LTC3428EDD | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Up 1.6V to 4.5V 10-Pin DFN EP |
| LTC3428EDD#PBF | 功能描述:IC REG BOOST ADJ 4A 10DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 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:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| LTC3428EDD#TRPBF | 功能描述:IC REG BOOST ADJ 4A 10DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 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:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
| LTC3428EDDPBF | 制造商:Linear Technology 功能描述:4A 1MHz 2-ph.Step-up DC-DC Conv DFN10EP |
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