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参数资料
| 型号： | LTC3105EDD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 6/18页 |
| 文件大小： | 0K |
| 描述： | IC CONV DC/DC 400MA HIEFF 10-DFN |
| 标准包装： | 2,500 |
| 应用： | 转换器，能量收集 |
| 输入电压： | 0.23 V ~ 5 V |
| 输出数： | 1 |
| 输出电压： | 1.5 V ~ 5.25 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 供应商设备封装： | 10-DFN（3x3） |
| 包装： | 带卷 (TR) |
LTC3105
PIN FUNCTIONS
(DFN/MSOP)
FB (Pin 1/Pin 1): Step-Up Converter Feedback Input. Con-
nect the V OUT resistor divider tap to this input. The output
voltage can be adjusted between 1.5V and 5.25V.
LDO (Pin 2/Pin 2): LDO Regulator Output. Connect a 4.7μF
or larger capacitor between LDO and GND.
FBLDO (Pin 3/Pin 3): LDO Feedback Input. Connect the
LDO resistive divider tab to this input. Alternatively, con-
necting FBLDO directly to GND will configure the LDO
output voltage to be internally set at 2.2V (nominal).
SHDN (Pin 4/Pin 4): Logic Controlled Shutdown Input.
With SHDN open, the converter is enabled by an internal
2MΩ pull-up resistor. The SHDN pin should be driven with
an open-drain or open-collector pull-down and floated until
the converter has entered normal operation. Excessive
loading on this pin may cause a failure to complete start-up.
SHDN = Low: IC Disabled
SHDN = High: IC Enabled
MPPC (Pin 5/Pin 5): Set Point Input for Maximum
Power Point Control. Connect a resistor from MPPC to
GND to program the activation point for the MPPC loop.
To disable the MPPC circuit, connect MPPC directly
to GND.
V IN (Pin 6/Pin 8): Input Supply. Connect a decoupling
capacitor between this pin and GND. The PCB trace length
from the V IN pin to the decoupling capacitor should be as
short and wide as possible. When used with high imped-
ance sources such as photovoltaic cells, this pin should
have a 10μF or larger decoupling capacitor.
GND (Exposed Pad Pin 11/Pins 6, 7) : Small Signal and
Power Ground for the IC. The GND connections should be
soldered to the PCB ground using the lowest impedance
path possible.
SW (Pin 7/Pin 9): Switch Pin. Connect an inductor between
SW and V IN . PCB trace lengths should be as short as pos-
sible to reduce EMI. While the converter is sleeping or is
in shutdown, the internal antiringing switch connects the
SW pin to the V IN pin in order to minimize EMI.
PGOOD (Pin 8/Pin 10): Power Good Indicator. This is an
open-drain output. The pull-down is disabled when V OUT
has achieved the voltage defined by the feedback divider
on the FB pin. The pull-down is also disabled while the IC
is in shutdown or start-up mode.
V OUT (Pin 9/Pin 11): Step-Up Converter Output. This is the
drain connection of the main output internal synchronous
rectifier. A 10μF or larger capacitor must be connected
between this pin and GND. The PCB trace length from the
V OUT pin to the output filter capacitor should be as short
and wide as possible.
AUX (Pin 10/Pin 12): Auxiliary Voltage. Connect a 1μF
capacitor between this pin and GND. This pin is used by
the start-up circuitry to generate a voltage rail to power
internal circuitry until the main output reaches regulation.
AUX and V OUT are internally connected together once V OUT
exceeds V AUX .
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相关代理商/技术参数 |
参数描述 |
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| LTC3105EMS#PBF | 功能描述:IC CONV DC/DC STEP DOWN 12-MSOP 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) |
| LTC3105EMS#TRPBF | 功能描述:IC CONV DC/DC 400MA HIEFF 12MSOP 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 |
| LTC3108 | 制造商:LINEAR 制造商全称:LINEAR 功能描述:Ultralow Voltage Step-Up Converter and Power Manager |
| LTC3108_10 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Ultralow Voltage Step-Up Converter and Power Manager |
| LTC3108_12 | 制造商:LINEAR 制造商全称:LINEAR 功能描述:Ultralow Voltage Step-Up Converter and Power Manager |
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