Datasheet > FAN5235MTC

FAN5235MTC

更新时间： 2024-11-27 23:51:47

品牌	Logo	应用领域
其他 - ETC		模拟IC 开关光电二极管
页数	文件大小	规格书
15页	86K
描述
Analog IC

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中文翻译

获取价格

数据手册

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FAN5235MTC 数据手册

www.fairchildsemi.com

FAN5 2 3 5

S ys t e m Ele c t ro n ic s Re g u la t o r fo r Mo b ile P Cs

Features

Description

• Synchronous rectiﬁcation

• ±1% precision internal reference

• >90% efﬁciency

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.

• 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

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.

• Outputs OVP of Buck Converters

• Precision current limit option for 5V, 3.3V Main

• Power Good Voltage Monitor

The FAN5235 is available in a 24-pin QSOP package, and in

a 24-pin TSSOP package.

Applications

• Notebook PCs and PDAs

• Hand-held portable instruments

Typical Application

Vin = 5.4-24V

FAN5235

5V-ALWAYS

5V @ 5A

1 VIN

CPUMP5 24

3.3V-ALWAYS@50mA

5V-ALWAYS

2 3.3 ALW

3 CPUMP3.3

4 HSD3.3

HSD5 23

SW5 22

ISEN5 21

3.3V @ 5A

5 SW3.3

LSD5 20

GND5 19

VFB5 18

SDN5 17

SW12 16

5V-ALWAYS@ 50mA

6 5V-ALW

7 LSD3.3

8 GND3.3

9 ISEN3.3

12V @ 120mA

SDN5

VFB12

10 VFB3.3

11 SDN3.3

VFB12 15

SDN3.3

PGOOD

SGND 14

SDWN 13

12 PGOOD

SDWN

REV. 1.3.3 1/3/02

12 3 4 5 6 7...15

中文翻译

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