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參數(shù)資料
| 型號： | SI91822DH-20-T1 |
| 廠商： | VISHAY SILICONIX |
| 元件分類： | 固定正電壓單路輸出LDO穩(wěn)壓器 |
| 英文描述： | 2 V FIXED POSITIVE LDO REGULATOR, 0.5 V DROPOUT, PDSO8 |
| 封裝： | MSOP-8 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 126K |
| 代理商： | SI91822DH-20-T1 |
Si91822
Vishay Siliconix
Document Number: 71671
S-41221—Rev. D, 28-Jun-04
www.vishay.com
1
Micropower 300-mA CMOS LDO Regulator
With Error Flag/Power-On-Reset
FEATURES
D Low 150-mV Dropout at 300-mA Load
D Guaranteed 300-mA Output Current
D 600-mA Peak Output Current Capability
D Uses Low ESR Ceramic Output Capacitor
D Fast Load and Line Transient Response
D Only 100-mV(rms) Noise With Noise Bypass
Capacitor
D 1-mA Maximum Shutdown Current
D Built-in Short Circuit and Thermal Protection
D Out-Of-Regulation Error Flag (Power Good or POR)
D Fixed1.215-V, 1.5-V, 1.8-V, 2.0-V, 2.5-V, 2.8-V,
2.85-V, 2.9-V, 3.0-V, 3.3-V, 5.0-V, or Adjustable
Output Voltage Options
D Other Output Voltages Available by Special Order
APPLICATIONS
D Cellular Phones
D Laptop and Palm Computers
D PDA, Digital Still Cameras
DESCRIPTION
The Si91822 is a 300-mA CMOS LDO (low dropout) voltage
regulator. The device features ultra low ground current and
dropout voltage to prolong battery life in portable electronics.
The Si91822 offers line/load transient response and ripple
rejection superior to that of bipolar or BiCMOS LDO regulators.
The device is designed to maintain regulation while delivering
600-mA peak current. This is useful for systems that have high
surge current upon turn-on. The Si91822 is designed to drive
the lower cost ceramic, as well as tantalum, output capacitors.
The device is guaranteed stable from maximum load current
down to 0-mA load. In addition, an external noise bypass
capacitor connected to the device’s CNOISE pin will lower the
LDO’s output noise for low noise applications.
The Si91822 also includes an out-of-regulation error flag.
When the output voltage is 5% below its nominal output
voltage, the error flag output goes low. If a capacitor is
connected to the device’s delay pin, the error flag output pin will
generate a delayed power-on-reset signal.
The Si91822 is available in both standard and lead (Pb)-free
MSOP-8 packages and is specified to operate over the
industrial temperature range of 40 _C to 85 _C.
TYPICAL APPLICATIONS CIRCUITS
FIGURE 1.
Fixed Output
FIGURE 2.
Adjustable Output
FIGURE 3.
Low Noise, Full Features Application
CNOISE
SD
18
DELAY
ERROR
27
GND
SENSE/ADJ
36
VIN
VOUT
45
GND
VIN
2.2 mF
VOUT
Si91822
CNOISE
18
DELAY
ERROR
27
GND SENSE/ADJ
36
VIN
VOUT
45
GND
VIN
2.2 mF
VOUT
Si91822
CNOISE
18
DELAY
ERROR
27
GND SENSE/ADJ
36
VIN
VOUT
45
GND
VIN
2.2 mF
VOUT
Si91822
POR
ON/OFF
0.1 mF
1 MW
SD
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SI91822DH-25-T1 | 功能描述:低壓差穩(wěn)壓器 - LDO 300mA 2.5V CMOS LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| SI91822DH-25-T1-E3 | 功能描述:低壓差穩(wěn)壓器 - LDO 300mA 2.5V CMOS LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| SI91822DH-28-T1 | 功能描述:低壓差穩(wěn)壓器 - LDO 300mA 2.8V CMOS LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| SI91822DH-28-T1-E3 | 功能描述:低壓差穩(wěn)壓器 - LDO 300mA 2.8V CMOS LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| SI91822DH-30-T1 | 功能描述:低壓差穩(wěn)壓器 - LDO 300mA 3.0V CMOS LDO RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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