FAN2011 Fairchild Semiconductor, FAN2011 Datasheet

no-image

FAN2011

Manufacturer Part Number
FAN2011
Description
1.5A Low Voltage Current Mode Synchronous PWM Buck Regulator
Manufacturer
Fairchild Semiconductor
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
FAN2011EMPX
Manufacturer:
Fairchild/ON Semiconductor
Quantity:
17 640
Part Number:
FAN2011EMPX
Manufacturer:
ON Semiconductor
Quantity:
720
Part Number:
FAN2011MPX
Manufacturer:
Fairchild/ON Semiconductor
Quantity:
35 798
Part Number:
FAN2011MPX
Manufacturer:
ON Semiconductor
Quantity:
5 000
Part Number:
FAN2011MPX
Manufacturer:
FAIRCHILD
Quantity:
181
FAN2011/FAN2012 Rev. 1.0.2
FAN2011/FAN2012
1.5A Low Voltage Current Mode Synchronous PWM Buck
Regulator
Features
I 95% Efficiency, Synchronous Operation
I Adjustable Output Voltage from 0.8V to V
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
Applications
I Hard Disk Drive
I Set Top Box
I Point of Load Power
I Notebook Computers
I Communications Equipment
Typical Application
V
OUT
R1
4 x 10µF
R2
10KΩ
L1
3.3µH
PGND
SW
FB
1
2
3
FAN2011
(AGND)
P1
6
5
4
IN
NC
V
PV
Figure 1. Typical Application
IN
IN
+5V
10µF
1
Description
The FAN2011/FAN2012 is a high-efficiency, 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
voltage divider.
The FAN2011 is always on, while the FAN2012 has an “Enable
Input,” and the device can be put in the shutdown 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, 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.
V
OUT
R1
4 x 10µF
R2
10KΩ
L1
3.3µH
PGND
SW
FB
1
2
3
FAN2012
(AGND)
IN
P1
by means of an external
6
5
4
November 2004
EN
V
PV
www.fairchildsemi.com
IN
IN
+5V
10µF

Related parts for FAN2011

Related keywords