FAN2012MPX Fairchild Semiconductor, FAN2012MPX Datasheet

FAN2012MPX

Manufacturer Part Number

FAN2012MPX

Description

IC CONV DC/DC 1.5A ADJ STDN 6MLP

Manufacturer

Fairchild Semiconductor

Type

Step-Down (Buck)r

Datasheet

1.FAN2012MPX.pdf (10 pages)

Specifications of FAN2012MPX

Internal Switch(s)

Yes

Synchronous Rectifier

Yes

Number Of Outputs

Voltage - Output

0.8 ~ 5.5 V

Current - Output

1.5A

Frequency - Switching

1.3MHz

Voltage - Input

4.5 ~ 5.5 V

Operating Temperature

0°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

6-MLP

Mounting Style

SMD/SMT

Output Current

1.5 A

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Power - Output

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

Other names

FAN2012MPXTR
FAN2012MPX_NL
FAN2012MPX_NLTR
FAN2012MPX_NLTR

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Current page: 1 of 10
Download datasheet (618Kb)

FAN2011/FAN2012 Rev. 1.0.4

FAN2011/FAN2012

1.5A Low Voltage Current Mode Synchronous PWM Buck

Regulator

Features

Applications

Ordering Information

Product Number

95% Efﬁciency, Synchronous Operation

Adjustable Output Voltage from 0.8V to V

4.5V to 5.5V Input Voltage Range

Up to 1.5A Output Current

Fixed Frequency 1.3 MHz PWM Operation

100% Duty Cycle Low Dropout Operation (LDO)

Soft Start

Excellent Load Transient Response

3x3mm 6-lead MLP Package

Hard Disk Drive

Set Top Box

Point of Load Power

Notebook Computers

Communications Equipment

FAN2011I

FAN2012I

FAN2011

FAN2012

Output Voltage

Adjustable

3x3mm 6-Lead MLP

Package Type

Description

The FAN2011/FAN2012 is a high-efﬁciency, low-noise

synchronous Pulse Width Modulated (PWM) current

mode DC-DC converter, designed for low voltage appli-

cations. It provides up to 1.5A continuous load current

from the 4.5V to 5.5V input. The output voltage is adjust-

able over a wide range of 0.8V to V

external voltage divider.

The FAN2011 is always on, while the FAN2012 has an

“Enable Input,” and the device can be put in the shut-

down mode, in which the ground current falls below 1µA.

A current mode control loop with a fast transient

response ensures excellent line and load regulation. The

ﬁxed 1.3MHz switching frequency enables the user to

choose a small, inexpensive external inductor and

capacitor. Filtering is also easily accomplished with very

small components.

Protection features include input under-voltage lockout,

short circuit protection and thermal shutdown. Soft-start

limits in-rush current during start-up conditions.

The device is available in a 3x3mm 6-lead MLP package,

making it possible to build a 1.5A complete DC-DC con-

verter in a tiny space on the PCB.

Ambient Operating

Temperature

-40°C to 85°C

0°C to 85°C

FAN2011EMPX

FAN2012EMPX

FAN2011MPX

FAN2012MPX

Order Code

by means of an

www.fairchildsemi.com

April 2006

Related parts for FAN2012MPX

FAN2012MPX Summary of contents

Page 1

... PCB. Ambient Operating Package Type Temperature 3x3mm 6-Lead MLP 0°C to 85°C 3x3mm 6-Lead MLP 0°C to 85°C 3x3mm 6-Lead MLP -40°C to 85°C 3x3mm 6-Lead MLP -40°C to 85°C 1 April 2006 by means Order Code FAN2011MPX FAN2012MPX FAN2011EMPX FAN2012EMPX www.fairchildsemi.com ...

Page 2

Typical Application FB 1 10K R2 PGND (AGND OUT 3 3 FAN2011 Pin Assignment FB PGND SW 3x3mm 6-Lead MLP Pin Description FAN2011 (3x3mm 6-Lead MLP) Pin No. Pin ...

Page 3

Absolute Maximum Ratings Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in ...

Page 4

Electrical Characteristics V = 4.5V to 5.5V 1.2V OUT otherwise noted. Typical values are at T Parameter Input Voltage Quiescent Current UVLO Threshold PMOS On Resistance NMOS On Resistance P-channel Current Limit Over-Temperature Protection Switching Frequency ...

Page 5

Typical Performance Characteristics T = 25° 10µ 40µ 3.3µ OUT Output Voltage vs. Ambient Temperature 1.214 1.212 1.210 1.208 1.206 1.204 1.202 1.200 1.198 1.196 1.194 -40 - ...

Page 6

Typical Performance Characteristics T = 25° 10µ 40µ 3.3µ OUT Start-up Response Input Voltage (5V/div) SW Node Voltage (5V/div) Inductor Current (200mA/div) Output Voltage (500mV/div) Time (50 s/div) Start-up Response Input ...

Page 7

Block Diagram DIGITAL SOFT START FB ERROR AMP 0.8V GND IS SLOPE COMPENSATION Detailed Operation Description The FAN2011 is a step-down pulse width modulated (PWM) current mode converter with a typical switching frequency of 1.3MHz. At the beginning of each ...

Page 8

Applications Information Setting the Output Voltage The internal reference is 0.8V. The output is divided down by a voltage divider, R1 and R2 to the FB pin. The output voltage is ------ - ...

Page 9

Mechanical Dimensions 3x3mm 6-Lead MLP FAN2011/FAN2012 Rev. 1.0.4 9 www.fairchildsemi.com ...

Page 10

... TRADEMARKS The following are registered and unregistered trademarks Fairchild Semiconductor owns or is authorized to use and is not intended exhaustive list of all such trademarks. ® ACEx™ FAST ActiveArray™ FASTr™ Bottomless™ FPS™ Build it Now™ FRFET™ CoolFET™ ...

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