--- 產品詳情 ---
面向低功耗手持式應用的電源 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.
為你推薦
-
TI數字多路復用器和編碼器SN54HC1512022-12-23 15:12
-
TI數字多路復用器和編碼器SN54LS1532022-12-23 15:12
-
TI數字多路復用器和編碼器CD54HC1472022-12-23 15:12
-
TI數字多路復用器和編碼器CY74FCT2257T2022-12-23 15:12
-
TI數字多路復用器和編碼器SN74LVC257A2022-12-23 15:12
-
TI數字多路復用器和編碼器SN74LVC157A2022-12-23 15:12
-
TI數字多路復用器和編碼器SN74ALS258A2022-12-23 15:12
-
TI數字多路復用器和編碼器SN74ALS257A2022-12-23 15:12
-
TI數字多路復用器和編碼器SN74ALS157A2022-12-23 15:12
-
TI數字多路復用器和編碼器SN74AHCT1582022-12-23 15:12
-
電動汽車直流快充方案設計【含參考設計】2023-08-03 08:08
-
Buck電路的原理及器件選型指南2023-07-31 22:28
-
100W USB PD 3.0電源2023-07-31 22:27
-
基于STM32的300W無刷直流電機驅動方案2023-07-06 10:02
-
上新啦!開發板僅需9.9元!2023-06-21 17:43
-
參考設計 | 2KW AC/DC數字電源方案2023-06-21 17:43
-
千萬不能小瞧的PCB半孔板2023-06-21 17:34