FAN2011MPX Datasheet

  • FAN2011MPX

  • 1.5A Low Voltage Current Mode Synchronous PWM Buck Regulator

  • 242.22KB

  • 10页

  • FAIRCHILD

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FAN2011/FAN2012 1.5A Low Voltage Current Mode Synchronous PWM Buck Regulator
November 2004
FAN2011/FAN2012
1.5A Low Voltage Current Mode Synchronous PWM Buck
Regulator
Features
I
95% Ef铿乧iency, Synchronous Operation
I
Adjustable Output Voltage from 0.8V to V
IN
I
4.5V to 5.5V Input Voltage Range
I
Up to 1.5A Output Current
I
Fixed Frequency 1.3 MHz PWM Operation
I
100% Duty Cycle Low Dropout Operation
I
Soft Start
I
Excellent Load Transient Response
I
3x3mm 6-lead MLP Package
Description
The FAN2011/FAN2012 is a high-ef铿乧iency, low-noise synchro-
nous PWM current mode DC-DC converter, designed for low
voltage applications. It provides up to 1.5A continuous load cur-
rent from the 4.5V to 5.5V input. The output voltage is adjust-
able over a wide range of 0.8V to V
IN
by means of an external
voltage divider.
The FAN2011 is always on, while the FAN2012 has an 鈥淓nable
Input,鈥?and the device can be put in the shutdown mode, in
which the ground current falls below 1碌A.
A current mode control loop with a fast transient response
ensures excellent line and load regulation. The 铿亁ed 1.3MHz
switching frequency enables the user to choose a small, inex-
pensive 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, mak-
ing it possible to build a 1.5A complete DC/DC converter in a
tiny space on the PCB.
Applications
I
Hard Disk Drive
I
Set Top Box
I
Point of Load Power
I
Notebook Computers
I
Communications Equipment
Typical Application
FB 1
R2
R1
V
OUT
L1
10K鈩?/div>
PGND
SW
3
3.3碌H
4 x 10碌F
2
P1
(AGND)
6
5
4
NC
V
IN
PV
IN
10碌F
+5V
R1
V
OUT
4 x 10碌F
L1
R2
10K鈩?/div>
FB 1
PGND
SW
2
3
P1
(AGND)
EN
6
5
4
V
IN
PV
IN
10碌F
+5V
3.3碌H
FAN2011
Figure 1. Typical Application
FAN2012
FAN2011/FAN2012 Rev. 1.0.2
1
www.fairchildsemi.com

FAN2011MPX 产品属性

  • 3,000

  • 集成电路 (IC)

  • PMIC - 稳压器 - DC DC 开关稳压器

  • -

  • 降压(降压)

  • 可调式

  • 1

  • 0.8 V ~ 5.5 V

  • 4.5 V ~ 5.5 V

  • 电流模式

  • 1.3MHz

  • 1.5A

  • 0°C ~ 85°C

  • 表面贴装

  • 6-MLP

  • 带卷 (TR)

  • 6-MLP(3x3)

  • FAN2011MPXTRFAN2011MPX_NLFAN2011MPX_NLTRFAN2011MPX_NLTR-ND

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