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參數(shù)資料
| 型號： | FAN5235 |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | System Electronics Regulator for Mobile PCs |
| 中文描述： | SWITCHED CAPACITOR REGULATOR, 345 kHz SWITCHING FREQ-MAX, PDSO24 |
| 封裝： | QSOP-24 |
| 文件頁數(shù)： | 1/15頁 |
| 文件大小： | 85K |
| 代理商： | FAN5235 |
www.fairchildsemi.com
REV. 1.3.3 1/3/02
Features
Synchronous rectification
±1% precision internal reference
>90% efficiency
Input and output voltage feedback
5.4V to 24V input voltage range
Internally set 300kHz ±15% oscillator
5V and 3.3V Main outputs switch out of phase
5V-ALWAYS and 3.3V-ALWAYS outputs
Adjustable boost converter for 12V
Boost converter slaved to 5V Main
Input UVLO
Outputs OVP of Buck Converters
Precision current limit option for 5V, 3.3V Main
Power Good Voltage Monitor
Applications
Notebook PCs and PDAs
Hand-held portable instruments
Description
The FAN5235 is a high efficiency and high precision
DC/DC controller for notebook converters. Utilization of
both input and output voltage feedback in a current-mode
control allows for fast and stable loop response over a wide
range of input and output voltage variations. The two main
regulators switch out of phase to minimize input ripple
current.
Current sense based on MOSFET Rdson gives maximum
efficiency, while also permitting use of a sense resistor for
high accuracy. An externally adjustable boost converter can
be set to generate 12V.
The FAN5235 is available in a 24-pin QSOP package, and in
a 24-pin TSSOP package.
Typical Application
1 VIN
2 3.3 ALW
3 CPUMP3.3
4 HSD3.3
5 SW3.3
6 5V-ALW
7 LSD3.3
8 GND3.3
9 ISEN3.3
10 VFB3.3
11 SDN3.3
12 PGOOD
CPUMP5 24
HSD5 23
SW5 22
ISEN5 21
LSD5 20
GND5 19
VFB5 18
SDN5 17
SW12 16
VFB12 15
SGND 14
SDWN 13
FAN5235
Vin = 5.4-24V
12V @ 120mA
+
3.3V-ALWAYS@50mA
5V @ 5A
SDN5
SDWN
PGOOD
3.3V @ 5A
+
SDN3.3
+
5V-ALWAYS@ 50mA
5V-ALWAYS
5V-ALWAYS
VFB12
FAN5235
S ystem Elec tronic s Regulator for Mobile PCs
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FAN5235_CAB3026B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FAN5235_CAB3116B WAF | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| FAN5235MTC | 功能描述:DC/DC 開關(guān)控制器 Regulator System Electronics RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| FAN5235MTC_Q | 功能描述:DC/DC 開關(guān)控制器 Regulator System Electronics RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| FAN5235MTCX | 功能描述:DC/DC 開關(guān)控制器 Regulator System Electronics RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
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