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參數(shù)資料
| 型號： | SI9169 |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | High-frequency 1-A synchronous buck/boost converter |
| 中文描述： | 高頻率1A同步降壓/升壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 76K |
| 代理商： | SI9169 |
Si9169
Vishay Siliconix
Document Number: 70945
S-40695—Rev. D, 19-Apr-04
www.vishay.com
1
High Frequency 1-A Synchronous Buck/Boost Converter
FEATURES
Voltage Mode Control
Fully Integrated MOSFET Switches
2.7-V to 6-V Input Voltage Range
Programmable PWM/PSM Control
Up to 1-A Output Current @ 3.6 V in PWM
Up to 2-MHz Adjustable Switching Frequency in PWM
Less than 200- A Quiescent Current in PSM
Integrated UVLO and POR
Integrated Soft-Start
Synchronization
Shutdown Current <1
A
DESCRIPTION
The Si9169 provides fully integrated synchronous buck or
boost converter solution for the latest one cell Lithium Ion
cellular phones. Capable of delivering up to 1 A of output
current at +3.6 V, the Si9169 provides ample power for various
baseband circuits as well as for some PAs. It combines the
2-MHz switching controller with fully integrated high-frequency
MOSFETs to deliver the smallest and most efficient converter
available today. The 2-MHz switching frequency reduces the
inductor height to new level of 2 mm and minimizes the output
capacitance requirement to less than 10 F with peak-to-peak
output ripple as low as 10 mV. Combined with low-gate charge
high-frequency MOSFETs, the Si9169 delivers efficiency up to
95%. The programmable pulse skipping mode maintains this
high efficiency even during the standby and idle modes to
increase overall battery life and talktime. In order to extract the
last ounce of power from the battery, the Si9169 is designed
with 100% duty cycle control for buck mode. With 100% duty
cycle, the Si9169 operates like a saturated linear regulator to
deliver the highest potential output voltage for longer talktime.
Si9169 can be a drop-in replacement of Si9165 provided Pin 1
is not connected. For full 1A load condition, Pin 1 is required
to be connected to low power controller ground.
The Si9169 is available in both standard and lead (Pb)-free
TSSOP-20 pin package. In order to satisfy the stringent
ambient temperature requirements, the Si9169 is rated to
handle the industrial temperature range of
25 C to 85 C and
40 C to 85 C.
FUNCTIONAL BLOCK DIAGRAM
V
DD
MODE
SHUTDOWN
PWM/PSM
SYNC
V
O
V
S
V
IN/OUT
FB
COMP
R
OSC
REF
PGND
GND
COIL
OUTPUT
0
1 A
INPUT
2.7
6 V
Boost Configuration
Buck Configuration
V
IN/OUT
V
S
V
DD
SHUTDOWN
PWM/PSM
SYNC
COIL
PGND
FB
COMP
R
OSC
REF
PGND GND
V
O
OUTPUT
0
1 A
INPUT
2.7
6 V
MODE
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SI9169_07 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:High Frequency 1-A Synchronous Buck/Boost Converter |
| SI9169BQ-T1 | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 High Freq Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| SI9169BQ-T1-E3 | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Hi-Freq 1A Sync Buck/Boost Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| SI9169DB | 制造商:Vishay Siliconix 功能描述:DEMO BOARD - Tape and Reel |
| SI9169DB-K | 功能描述:電源管理IC開發(fā)工具 SI9169 Demo Board RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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