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FAN2012 の電気的特性と機能

FAN2012のメーカーはFairchild Semiconductorです、この部品の機能は「1.5A Low Voltage Current Mode Synchronous PWM Buck Regulator」です。


製品の詳細 ( Datasheet PDF )

部品番号 FAN2012
部品説明 1.5A Low Voltage Current Mode Synchronous PWM Buck Regulator
メーカ Fairchild Semiconductor
ロゴ Fairchild Semiconductor ロゴ 




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FAN2012 Datasheet, FAN2012 PDF,ピン配置, 機能
November 2004
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 VIN
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
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 VIN by means of an external
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.
Typical Application
R1
VOUT
FB 1
10K
R2 PGND
2
L1 SW
3
3.3µH
4 x 10µF
P1
(AGND)
6 NC
5 VIN
4 PVIN
+5V
10µF
R1
VOUT
FB 1
10K
R2 PGND
2
L1 SW
3
3.3µH
4 x 10µF
P1
(AGND)
EN
6
5 VIN
4 PVIN
+5V
10µF
FAN2011
Figure 1. Typical Application
FAN2012
FAN2011/FAN2012 Rev. 1.0.2
1
www.fairchildsemi.com

1 Page





FAN2012 pdf, ピン配列
Absolute Maximum Ratings (Note1)
Parameter
VIN
PVIN and any other pin
Thermal Resistance-Junction to Tab (θJC), 3mmx3mm 6-lead MLP (Note 2)
Lead Soldering Temperature (10 seconds)
Storage Temperature
Junction Temperature
Electrostatic Discharge (ESD) Protection Level (Note 3)
HBM
CDM
Min
-0.3
-0.3
-65
-40
4
2
Max
7
VIN
8
260
150
150
Unit
V
V
°C/W
°C
°C
°C
kV
Recommended Operating Conditions
Parameter
Supply Voltage Range
Output Voltage Range, Adjustable Version
Output Current
Inductor (Note 4)
Input Capacitor (Note 4)
Output Capacitor (Note 4)
Operating Ambient Temperature Range
FAN2011 and FAN2012
FAN2011I and FAN2012I
Min
4.5
0.8
0
-40
Typ
3.3
10
4 x 10
Max
5.5
VIN
1500
+85
+85
Unit
V
V
mA
µH
µF
µF
°C
Notes:
1. Stresses above those listed under Absolute Maximum Ratingsmay 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 the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability. Absolute maximum ratings apply individually only, not in combination.
Unless otherwise specified, all other voltages are referenced to AGND.
2. Junction to ambient thermal resistance, θJA, is a strong function of PCB material, board thickness, thickness and
number of copper planes, number of via used, diameter of via used, available copper surface, and attached heat
sink characteristics.
3. Using Mil Std. 883E, method 3015.7(Human Body Model) and EIA/JESD22C101-A (Charge Device Model).
4. Refer to the applications section for further details.
FAN2011/FAN2012 Rev. 1.0.2
3
www.fairchildsemi.com


3Pages


FAN2012 電子部品, 半導体
Typical Performance Characteristics (Continued)
TA = 25°C, CIN = 10µF, COUT = 40µF, L = 3.3µH, VIN = 5V, unless otherwise noted.
Start-up Response
Start-up Response
Input
Voltage
(5V/div)
Input
Voltage
(5V/div)
SW Node
Voltage
(5V/div)
SW Node
Voltage
(5V/div)
Inductor
Current
(200mA/div)
Output
Voltage
(500mV/div)
VOUT = 1.2V
IOUT = 100mA
Time (50µs/div)
Inductor
Current
(200mA/div)
Output
Voltage
(1V/div)
VOUT = 3.3V
IOUT = 100mA
Time (100µs/div)
Input
Voltage
(5V/div)
SW Node
Voltage
(5V/div)
Inductor
Current
(500mA/div)
Output
Voltage
(500mV/div)
Load
Current
100mA
SW Node
Voltage
(5V/div)
Output
Voltage
(20mV/div)
Inductor
Current
(200mA/div)
Start-up Response
Input
Voltage
(5V/div)
SW Node
Voltage
(5V/div)
Inductor
Current
(500mA/div)
IVOOUUTT==115.020VmA
Output
Voltage
(1V/div)
Time (100µs/div)
Transient Response
700mA
VOUT = 1.2V
Time (5µs/div)
Load
Current
700mA
SW Node
Voltage
(5V/div)
Output
Voltage
(20mV/div)
Inductor
Current
(200mA/div)
Start-up Response
VOUT = 3.3V
IOUT = 1500mA
Time (100µs/div)
Transient Response
100mA
VOUT = 1.2V
Time (5µs/div)
FAN2011/FAN2012 Rev. 1.0.2
6
www.fairchildsemi.com

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
FAN2011

1.5A Low Voltage Current Mode Synchronous PWM Buck Regulator

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Fairchild Semiconductor
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FAN2012

1.5A Low Voltage Current Mode Synchronous PWM Buck Regulator

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FAN2013

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