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PDF AIC2511 Data sheet ( Hoja de datos )
| Número de pieza | AIC2511 | |
| Descripción | 3A STEP-DOWN PWM CONVERTER | |
| Fabricantes | Analog Integrations Corporation | |
| Logotipo |  |
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AIC2511
3A STEP-DOWN PWM CONVERTER
FEATURES
Operating Input Voltage From 4.5V to 24V
3.3V, 5V, 12V and Adjustable Output Version
Adjustable Version Output Voltage Range,
1.2V to 24V ± 4% max Over Line and Load
Regulation
Available in TO-263-5, TO-220-5, TO-220B
and TO-252-5 Package
Requires Only 4 External Components.
150KHz Fixed Constant Frequency
Low Power Standby Mode, IQ Typically 80µA
TTL Shutdown Capability.
Current Limit and Thermal Shutdown
Protection.
3A Guaranteed Output Load Current
APPLICATIONS
Fixed Voltage power supply for LCD Monitor
and LCD TV
On-Card Switching regulators
Simple High Efficiency Step-down regulator
GENERAL DESCRIPTION
The AIC2511 series are step-down monolithic
PWM converters for delivering 3A at fixed
voltages of 3.3V, 5.0V, 12V and using an
external divider to adjust output voltage from
1.2V to 24V with excellent line and load
regulation.
Switching frequency up to 150KHz is achievable
thus allowing smaller-sized filter components.
Internal current limit and thermal shutdown
circuits provide protection from overloads. The
internal precise reference combined with
voltage feedback loop provides optimum output
voltage accuracy and fast load transient
response.
TYPICAL APPLICATION CIRCUIT
VIN
+
C1
AIC2511
1
IN
2
OUT
5 ON/OFF
4
FB
GND
3
L1
D1
+
C2
VOUT
CF
R1
C1: electrolyte capacitor 470uF
C2: electrolyte capacitor 220uF
CF:refer to table1
D1: SK54
L1:33uH
R2
R1 short, R2 and CF open for fixed version
Analog Integrations Corporation 3A1, No.1 Li-Hsin Rd. I, Science Park, Hsinchu 300, Taiwan
TEL: 886-3-5772500
FAX: 886-3-5772510 www.analog.com.tw
DS-2511G-01 092408
1
1 page  
AIC2511
TYPICAL PERFORMANCE CHARACTERISTICS
85 90
80
75 VOUT=3.3V version
70
65
60
55
50
45 Vin=5V
40 Vin=12V
35
Vin=18V
30
25 Vin=24V
20
10
100
1000
85
80 VOUT=5.0V version
75
70
65
60
55
50
Vin=12V
45
40 Vin=18V
35 Vin=24V
30
25
10
100
1000
Load current (mA)
Fig.1 3.3V version efficiency
Load current (mA)
Fig.2 5V version efficiency
95
90 VOUT=12.0V version
85
80
75
90
85
Vout=12V
80
75
70 Vout=5.0V
65
70
65 Vin=18V
60 Vin=24V
55
50
45
10
100 1000
Load current (mA)
Fig.3 12V version efficiency
60
Vout=3.3V
55
50
45
40
35
30
4
IOUT=3A
TO-263-5
8 12 16 20 24
Input Voltage (V)
Fig.4 Case temperature vs. input voltage
200 6.8
190 6.4
180 6.0
170 5.6
160 5.2
150 4.8
140 4.4
130 4.0
120 3.6
110 3.2
100 2.8
-60 -40 -20 0 20 40 60 80 100
-60 -40 -20 0 20 40 60 80 100
T (oC)
J
Fig.5 Switching Frequency vs. Temperature
Current Limit vs. Temperature
Fig.6 Current Limit vs. Temperature
5
5 Page 
AIC2511
PHYSICAL DIMENSIONS(Continued) (unit: mm)
TO-220B
E
E1 E1
d
φ
D
A
F
D1
L L1
eb
e1
C
A1
A2
S
Y
M
B
O
L
A
A1
A2
b
C
D
D1
d
E
E1
φ
e
e1
F
L
L1
TO-220B
MILLIMETERS
MIN.
4.318
MAX.
4.826
4.250
8.250
0.690
0.304
8.480
3.556(REF)
2.743(REF)
4.550
8.550
0.940
0.530
9.300
9.906
4.953
3.708
1.524
6.604
10.44
5.220
3.962
2.032
7.112
1.143
9.880
1.397
10.64
9.090
9.850
Note : Controlling dimension is millimeter, converted inch
dimensions are not necessarily exact.
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet AIC2511.PDF ] | |
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