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参数资料
| 型号： | LTC3499BEDD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 6/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC ADJ 0.75A 8DFN |
| 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： | 2 V ~ 6 V |
| 输入电压： | 1.8 V ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 1.2MHz |
| 电流 - 输出： | 750mA |
| 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： | 8-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-DFN-EP（3x3） |
LTC3499/LTC3499B
PIN FUNCTIONS
V OUT = 1.22 ? ? 1 + ?
SHDN(Pin1): ShutdownInputforIC.Connecttoavoltage
greater than 1.2V to enable and a voltage less than 0.2V
to disable the LTC3499/LTC3499B.
V IN (Pin 2): Input Supply Voltage. The valid operating
voltage is between 1.8V to 5.5V. V IN has reverse battery
protection. Since the LTC3499/LTC3499B use V IN as the
main bias source, bypass with a low ESR ceramic capaci-
tor of at least 2.2μF.
SW (Pin 3): Switch Pin. Connect an inductor from V IN to
this pin with a value between 2.2μH and 10μH. Keep PCB
trace lengths as short and wide as possible to minimize
EMI and voltage overshoot. If the inductor current falls to
zero or SHDN is low an internal 250Ω antiringing switch
is connected from V IN to SW to minimize EMI.
GND (Pin 4/Exposed Pad, DD Package Pin 9): Signal
and Power Ground. The DD package exposed pad must
be soldered to the PCB power ground plane for electrical
connection and rated thermal performance.
SS (Pin 5): Soft-Start Input. Connect a capacitor from
SS to ground to control the inrush current at start-up.
An internal 3μA current source charges this pin. SS will
be discharged if SHDN is pulled low, thermal shutdown
occurs or V IN is below the minimum operating voltage.
V OUT (Pin 6): Power Supply Output. Connect a low ESR
output filter capacitor from this pin to the ground plane.
FB (Pin 7): FB Input to Error Amplifier. Connect a resistor
divider tap from V OUT to this pin to set the output voltage.
The output voltage can be adjusted between 2V and 6V.
Referring to the Functional Block Diagram, the output
voltage is given by:
? ? R1 ? ?
? ?
? ? R2 ? ?
VC (Pin 8): Error Amplifier Output. A frequency com-
pensation network is connected from this pin to GND to
compensate the boost converter loop. See Closing the
Feedthrough Loop section for guidelines.
3499fc
6
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相关代理商/技术参数 |
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| LTC3499BEMS8 | 制造商:LINER 制造商全称:Linear Technology 功能描述:750mA Synchronous Step-Up DC/DC Converters with Reverse-Battery Protection |
| LTC3499BEMS8#PBF | 功能描述:IC REG BST SYNC ADJ 0.75A 8MSOP 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:升压（升压） 输出类型:可调式 输出数:1 输出电压:1.24 V ~ 30 V 输入电压:1.5 V ~ 12 V PWM 型:电流模式，混合 频率 - 开关:600kHz 电流 - 输出:500mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) 供应商设备封装:8-SOIC |
| LTC3499BEMS8#TRPBF | 功能描述:IC REG BST SYNC ADJ 0.75A 8MSOP 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:升压（升压） 输出类型:可调式 输出数:1 输出电压:1.24 V ~ 30 V 输入电压:1.5 V ~ 12 V PWM 型:电流模式，混合 频率 - 开关:600kHz 电流 - 输出:500mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) 供应商设备封装:8-SOIC |
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| LTC3499EDD#PBF | 功能描述:IC REG BOOST SYNC ADJ 0.75A 8DFN 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 |
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