--- 产品详情 ---
面向低功耗手持式应用的电源 IC (PMIC)
Regulated outputs (#) | 4 |
Vin (Min) (V) | 3 |
Vin (Max) (V) | 5.5 |
Iout (Max) (A) | 0.6 |
Rating | Catalog |
LDO | 2 |
Iq (Typ) (mA) | 0.14 |
Features | Enable Pin, Over Current Protection, Thermal Shutdown |
Shutdown current (ISD) (Typ) (uA) | 6.5 |
Switching frequency (Typ) (kHz) | 2000 |
Configurability | Factory programmable, Hardware configurable |
- Two Buck Regulators for Powering High Current Processor Functions or Peripheral Devices
- Two Linear Regulators for Powering Internal Processor Functions and I/Os
- One Enable Pin for Buck1 and Linear Regulators 1 and 2
- Separate Enable Pin for Buck2
- Thermal and Current Overload Protection
- Small 14–Pin WSON Package (4x4mmx0.8mm)
Key Specifications
- Buck Regulators
- Fixed and Adjustable Voltage Options, Range 1.0V to 3.3V(1)
- Up to 90% Efficiency
- Auto-Switching PFM-PWM Mode and Fixed PWM Mode
- 2MHz PWM Fixed Switching Frequency (Typ)
- 600mA Output Current
- ±4% Output Voltage Accuracy Over Temp
- Internal SoftStart
- 2.2μH Inductor, 10μF Input and Output Caps
- Linear Regulators
- Output Options in the Range 1.5V to 3.3V
- 13.5μVrms Output Voltage Noise
- PSRR - 70dB @ 1kHz
- ±3% Output Voltage Accuracy Over Full Line and Load Regulation
- 0mA to 150mA Output Current
- Cin = 1.0μF, Cout = 0.47μF for 100mA O/P
- Cin = 1.0μF, Cout = 1.0μF for 150mA O/P
- 80mV Dropout Voltage
LP3905 is a multi-functional Power Management Unit, optimized for low power handheld applications. This device integrates two 600mA DC-DC buck regulators and two 150mA linear regulators. Fixed and adjustable buck output versions are available. The LP3905 additionally features two enable pins for the device output control and is offered in an WSON package.
为你推荐
-
TI数字多路复用器和编码器SN54HC1512022-12-23 15:12
-
TI数字多路复用器和编码器SN54LS1532022-12-23 15:12
-
TI数字多路复用器和编码器CD54HC1472022-12-23 15:12
-
TI数字多路复用器和编码器CY74FCT2257T2022-12-23 15:12
-
TI数字多路复用器和编码器SN74LVC257A2022-12-23 15:12
-
TI数字多路复用器和编码器SN74LVC157A2022-12-23 15:12
-
TI数字多路复用器和编码器SN74ALS258A2022-12-23 15:12
-
TI数字多路复用器和编码器SN74ALS257A2022-12-23 15:12
-
TI数字多路复用器和编码器SN74ALS157A2022-12-23 15:12
-
TI数字多路复用器和编码器SN74AHCT1582022-12-23 15:12
-
如何利用运算放大器设计振荡电路?2023-08-09 08:08
-
【PCB设计必备】31条布线技巧2023-08-03 08:09
-
电动汽车直流快充方案设计【含参考设计】2023-08-03 08:08
-
Buck电路的原理及器件选型指南2023-07-31 22:28
-
100W USB PD 3.0电源2023-07-31 22:27
-
千万不要忽略PCB设计中线宽线距的重要性2023-07-31 22:27
-
基于STM32的300W无刷直流电机驱动方案2023-07-06 10:02
-
上新啦!开发板仅需9.9元!2023-06-21 17:43
-
参考设计 | 2KW AC/DC数字电源方案2023-06-21 17:43
-
千万不能小瞧的PCB半孔板2023-06-21 17:34