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부품번호 FAN2013 기능
기능 Low-Voltage Current-Mode Synchronous PWM Buck Regulator
제조업체 Fairchild Semiconductor
로고 Fairchild Semiconductor 로고


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FAN2013 데이터시트, 핀배열, 회로
FAN2013
2A Low-Voltage Current-Mode Synchronous
PWM Buck Regulator
November 2006
Features
Description
95% Efficiency, Synchronous Operation
Adjustable Output Voltage from 0.8V to VIN
4.5V to 5.5V Input Voltage Range
Up to 2A Output Current
Fixed-Frequency 1.3MHz PWM Operation
100% Duty Cycle, Low-Dropout Operation
Soft-Start Function
Excellent Load Transient Response
Power-Good Flag
Over-Voltage, Under-Voltage Lockout, Short-Circuit,
and Thermal Shutdown Protections
3x3mm 6-lead MLP Package
The FAN2013 is a high-efficiency, low-noise synchro-
nous PWM current mode DC-DC converter designed for
low-voltage applications. It provides up to 2A continuous
load current from the 4.5V to 5.5V input. The output volt-
age is adjustable over a wide range of 0.8V to VIN by
means of an external voltage divider.
The FAN2013 is enabled when the input voltage on the
VIN pin exceeds the UVLO threshold.
A current-mode control loop with a fast transient
response ensures excellent line and load regulation. The
fixed 1.3MHz switching frequency enables designers to
choose a small, inexpensive external inductor and
capacitor. Filtering can be accomplished with small com-
Applications
Hard Disk Drive
Set-Top Box
ponents, reducing space and cost.
Protection features include input under-voltage lockout,
short-circuit protection, and thermal shutdown. Soft-start
limitswww.DataSheet4U.com in-rush current during start-up conditions.
Point-of-Load Power
The device is available in a 3x3mm 6-lead MLP.
Notebook Computer
Communications Equipment
Typical Application
+5V
PG
6
VIN 5
PVIN 4
10µF
P1
(AGND)
1 FB
10K
PGND
R2
2
SW L1
3
2.2µH
R1
VOUT
40µF
Figure 1. Typical Application
Ordering Information
Part Number
FAN2013MPX
Output Voltage
0.8V - VIN
Pb-Free
Yes
Package Type
MLP-6 3x3mm
Packing Method
Tape and Reel
© 2006 Fairchild Semiconductor Corporation
FAN2013 Rev. 1.0.0
www.fairchildsemi.com




FAN2013 pdf, 반도체, 판매, 대치품
Electrical Characteristics
VIN = 4.5V to 5.5V, VOUT = 1.2V, IOUT = 200mA, CIN = 10µF, COUT = 40µF, L = 2.2µH, TA = -40°C to +85°C, unless
otherwise noted. Typical values are at TA = 25°C.
Parameter
Conditions
Input Voltage
Quiescent Current
UVLO Threshold
IOUT = 0mA
VIN rising
Hysteresis
PMOS On Resistance
NMOS On Resistance
P-Channel Current Limit
Over-Temperature Protection
VIN = VGS = 5V
VIN = VGS = 5V
4.5V < VIN < 5.5V
Rising temperature
Hysteresis
Switching Frequency
Line Regulation
VIN = 4.5 to 5.5V
IOUT = 100mA
Load Regulation
0mA IOUT 2000mA
Output Voltage During Load Transition(4)
IOUT from 1500mA to 100mA
COUT = 60µF
Output Voltage During Load Transition(4)
IOUT from 100mA to 1500mA
COUT = 60µF
Reverse Leakage Current into Pin SW
VIN = Open, EN = GND,
Vsw = 5.5V
Reference Voltage, VREF
Output Voltage Accuracy
VIN = 4.5 to 5.5V
0mA IOUT 2000mA
TA = 0C to +85C
VIN = 4.5 to 5.5V
0mA IOUT 2000mA
TA = -40C to +85C
FB voltage rising
Power Good Output Threshold and Hysteresis
Hysteresis
Power Good Output Delay
Power Good Output Voltage Low
Isink=6mA, open drain output
Over-Voltage Protection (OVP) Threshold and FB voltage rising
Hysteresis
Hysteresis
Min.
4.5
3.5
2.8
1000
-5
-2
-3
Typ.
5
3.7
150
90
90
3.5
150
20
1300
0.16
0.2
0.1
0.8
0.95 x VOUT
2
100
1.07 x VOUT
2
Max.
5.5
10
4.0
4.2
1600
0.6
5
1
2
3
0.4
Units
V
mA
V
mV
mΩ
mΩ
A
°C
°C
kHz
%/V
%
%
%
µA
V
%
%
V
%
µs
V
V
%
Notes:
4. Refer to the load transient response test waveform in Figure 3.
1500
100
0
tr = 100nsec
ss
tf = 100nsec
ss
0.6
ssss
4.6 Time (msec)
Figure 3. Load Transient Response Test Waveform
© 2006 Fairchild Semiconductor Corporation
FAN2013 Rev. 1.0.0
4
www.fairchildsemi.com

4페이지










FAN2013 전자부품, 판매, 대치품
Applications Information
Setting the Output Voltage
The internal voltage reference, VREF, is 0.8V. The output
is divided down by a voltage divider, R1 and R2 to the FB
pin. The output voltage is:
VOUT
=
VREF
1
+
RR-----12-⎠⎞
EQ 2
According to this equation, assuming desired output volt-
age of 1.2V, and given R2 = 10KΩ, the calculated value
of R1 is 5KΩ.
Inductor Selection
The inductor parameters directly related to device perfor-
mance are saturation current and DC resistance. The
FAN2013 operates with a typical inductor value of 2.2µH.
The lower the DC resistance, the higher the efficiency.
For saturation current, the inductor should be rated
higher than the maximum load current, plus half of the
inductor ripple current, calculated by:
ΔIL
=
VOUT
×
1-----–-----(--V-----O---U----T--------V----I--N----)
L×f
where:
ΔIL = Inductor Ripple Current
f = Switching Frequency
L = Inductor Value
EQ 3
Recommended inductors are listed in Table 1.
Inductor Value
2.2µH
2.2µH
Vendor
Coiltronics
Murata
Part Number
SD25 2R2
LQH66SSN2R2M03
PCB Layout Recommendations
The inherently high peak currents and switching fre-
quency of power supplies require careful PCB layout
design. For best results, use wide traces for high-current
paths and place the input capacitor, the inductor, and the
output capacitor as close as possible to the integrated
circuit terminals. To minimize voltage stress to the device
resulting from ever-present switching spikes, use an
input bypass capacitor with low ESR. Note that the peak
amplitude of the switching spikes depends upon the load
current; the higher the load current, the higher the
switching spikes.
The resistor divider that sets the output voltage should
be routed away from the inductor to avoid RF coupling.
The ground plane at the bottom side of the PCB acts as
an electromagnetic shield to reduce EMI. The recom-
mended PCB layout is shown in Figure 11.
Table 1: Recommended Inductors
Capacitors Selection
For best performance, a low-ESR input capacitor is
required. A ceramic capacitor of at least 10µF, placed as
close to the VIN and AGND pins as possible, is recom-
mended.
The output capacitor determines the output voltage rip-
ple and the transient response. A minimum 20µF output
capacitor is required for the FAN2013 to operate in sta-
ble conditions.
Capacitor
Value
Vendor
10µF Taiyo Yuden
TDK
Murata
Part Number
JMK212BJ106MG
JMK316BJ106KL
C2012X5ROJ106K
C3216X5ROJ106M
GRM32ER61C106K
Table 2: Recommended Capacitors
Figure 11. Recommended PCB Layout
© 2006 Fairchild Semiconductor Corporation
FAN2013 Rev. 1.0.0
7
www.fairchildsemi.com

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