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參數資料
| 型號： | SI91842DT-50-T1-E3 |
| 廠商： | VISHAY SILICONIX |
| 元件分類： | 固定正電壓單路輸出LDO穩壓器 |
| 英文描述： | 5 V FIXED POSITIVE LDO REGULATOR, 0.22 V DROPOUT, PDSO5 |
| 封裝： | LEAD FREE, TSOT-23, 5 PIN |
| 文件頁數： | 1/10頁 |
| 文件大小： | 119K |
| 代理商： | SI91842DT-50-T1-E3 |
Available
Si91842
Vishay Siliconix
Document Number: 71732
S-50956—Rev. F, 16-May-05
www.vishay.com
1
150-mA Low-Noise LDO Regulator
With Error Flag and Discharge Option
FEATURES
D Ultra Low Dropout—130 mV at 150-mA Load
D Low Noise—75 mV(rms)
(10-Hz to 100-kHz Bandwidth)
D Out-of-Regulation Error Flag (power good)
D Shutdown Control
D 110-mA Ground Current at 150-mA Load
D Fast Start-Up (50 mS)
D 1.5% Guaranteed Output Voltage Accuracy (1.2 V, 2%)
D 300-mA Peak Output Current Capability
D Uses Low ESR Ceramic Capacitors
D Fast Line and Load Transient Response (v 30 ms)
D 1-mA Maximum Shutdown Current
D Output Current Limit
D Reverse Battery Protection
D Built-in Short Circuit and Thermal Protection
D Output—Auto-Discharge In Shutdown Mode
D Fixed 1.2, 1.8, 2.5, 2.6, 2.8, 2.85, 3.0, 3.3, 5.0-V Output
Voltage Options
D Thin SOT23-5 Package
APPLICATIONS
D Cellular Phones, Wireless Handsets
D Noise-Sensitive Electronic Systems, Laptop and
Palmtop Computers
D PDAs
D Pagers
D Digital Cameras
D MP3 Player
D Wireless Modem
DESCRIPTION
The Si91842 is a 150-mA CMOS LDO (low dropout) voltage
regulator. It is the perfect choice for low voltage, low power
applications. An ultra low ground current and ultra fast turn-on
make this part attractive for battery operated power systems.
The Si91842 also offers ultra low dropout voltage to prolong
battery life in portable electronics. Systems requiring a quiet
voltage source will benefit from the Si91842’s low output noise.
The Si91842 is designed to maintain regulation while
delivering 300-mA peak current, making it ideal for systems
that have a high surge current upon turn-on.
For better transient response and regulation, an active
pull-down circuit is built into the Si91842 to clamp the output
voltage when it rises beyond normal regulation. The Si91842
automatically discharges the output voltage by connecting the
output to ground through a 100-W n-channel MOSFET when
the device is put in shutdown mode.
The Si91842 features reverse battery protection to limit
reverse current flow to approximately 1-mA in the event
reversed battery is applied at the input, thus preventing
damage to the IC.
The Si91842 is available in both standard and lead (Pb)-free
packages.
TYPICAL APPLICATION CIRCUIT
3
2
Si91842
1
4
5
VIN
GND
SD
VOUT
ERROR
VIN
SD
VOUT
1 mF
51 kW
ERROR
Thin SOT-23, 5-Lead
相關PDF資料 |
PDF描述 |
|---|---|
| SI91842DT-285-T1-E3 | 2.85 V FIXED POSITIVE LDO REGULATOR, 0.22 V DROPOUT, PDSO5 |
| SIA2522-820 | 1 ELEMENT, 82 uH, GENERAL PURPOSE INDUCTOR, SMD |
| SIA2522-6R8 | 1 ELEMENT, 6.8 uH, GENERAL PURPOSE INDUCTOR, SMD |
| SIA2522-680 | 1 ELEMENT, 68 uH, GENERAL PURPOSE INDUCTOR, SMD |
| SIA2522-4R7 | 1 ELEMENT, 4.7 uH, GENERAL PURPOSE INDUCTOR, SMD |
相關代理商/技術參數 |
參數描述 |
|---|---|
| SI91843 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:150-mA Ultra Low-Noise LDO Regulator With Discharge Option |
| SI91843DT-12-T1 | 制造商:Vishay Siliconix 功能描述:150MA EXTREMELY LOW NOISE LOW DROP OUT REGULATOR (LDO)- NO-D - Tape and Reel |
| SI91843DT-15-T1 | 制造商:Vishay Siliconix 功能描述:150MA EXTREMELY LOW NOISE LOW DROP OUT REGULATOR (LDO) NO-DI - Tape and Reel |
| Si91843DT-18-T1 | 制造商:Vishay Siliconix 功能描述:REG LDO LIN FIX POS 1.8V 0.3A 5PIN SOT-23 - Tape and Reel |
| Si91843DT-20-T1 | 制造商:Vishay Siliconix 功能描述:REG LDO LIN FIX POS 2V 0.3A 5PIN SOT-23 - Tape and Reel |
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