|
|
PDF AIC1576 Data sheet ( Hoja de datos )
| Número de pieza | AIC1576 | |
| Descripción | Step-Down DC/DC Controller | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AIC1576 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
|
No Preview Available !
AIC1576
High-Efficiency, Step-Down DC/DC Controller
FEATURES
High Efficiency (up to 95%).
Low Quiescent Current at 90µA.
Pulse-Skipping and Pulse-Frequency
Modulation.
Inputs-Uncommitted Current Sense
Comparator.
Duty Cycle Adjustable.
90KHz to 280KHz Oscillator Frequency.
Power-Saving Shutdown Mode (8µA Typical).
Push-Pull Driver Output.
APPLICATIONS
LCD Monitors
Notebook Computers
Step-Down DC/DC Controller Module.
Constant Current Source for Battery
Chargers.
DESCRIPTION
The AIC1576 is a high performance step-down
DC/DC controller, designed to drive an external
P-channel MOSFET to generate programmable
output voltages. Two main schemes of
Pulse-Skipping and Pulse-Frequency
Modulation are employed to maintain low
quiescent current and high conversion efficiency
under wide ranges of input voltage and loading
condition. The AIC1576 delivers 10mA to 2A of
output current with 87%~93% efficiency at
VIN=9V, VOUT=5V condition. A current sense
comparator with both inverting and non-inverting
input uncommitted is included to provide the
crucial function of either current limit protection
or constant output current control. The efficiency
of AIC1576 is typically greater than 90%.
Quiescent current is about 90µA and can be
reduced to 8µA in shutdown mode. Switching
frequency being in around 90KHz to 280KHz
range, small size switching components are
ideal for battery powered portable equipment.
Analog Integrations Corporation
Si-Soft Research Center
3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C.
TEL: 886-3-5772500
FAX: 886-3-5772510 www.analog.com.tw
DS-1576P-02 041806
1
1 page  
AIC1576
TYPICAL PERFORMANCE CHARACTERISTICS
95
260
90
Duty
85
80
Frequency
240
220
200
180
75 160
140
70 120
65 100
80
60
4 6 8 10 12 14 16 18 20
VIN (V)
Fig. 1 Frequency & Duty Cycle vs. VIN
95
90
VIN=5V
85
80
75
VIN=13V
70
65
60-40
VIN=18V
-20 0 20 40 60 80
Temperature (°C)
Fig. 2 Duty Cycle vs. Temperature
100
400
350
300
250
200
150
100
50
0
-40
VIN=13V
VIN=18V
VIN=5V
-20 0
20 40 60 80
Temperature (°C)
Fig. 3 Frequency vs. Temperature
100
125
120
115
110 TA=0°C
105
100
95 TA=70°C
TA=25°C
90
85
80
75
70
4 6 8 10 12 14 16 18 20
VIN (V)
Fig. 5 Quiescent Current vs. VIN
20
15
TA=25°C
10 TA=0°C
TA=70°C
5
0
4 6 8 10 12 14 16 18 20
VIN (V)
Fig. 4 Shutdown vs. VIN
5
5 Page 
AIC1576
APPLICATION EXAMPLES (Continued)
VIN 12V
* RS
Q1
CEM4435
+
C1
470µF
C2
0.1µF
R3
500k
C5
220pF
D1 L1 33µH
SS32
1 VIN
2 NC
3 SHDN
4 FB
NC 8
CS 7
DRI 6
GND 5
C3 +
1500µF
**R7
AIC1576
VOUT
3.3V
C4
R1
18k 680pF
R2
10.5K
*VIN>15V, R7=15Ω
*VIN≤15V, R7=0Ω
**:Sumida MPP Core
Fig. 12 Step-Down Converter
11
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet AIC1576.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AIC1570 | 5-bit DAC/ Synchronous PWM Power Regulator with LDO and Linear Controller | Analog Intergrations Corporation |
| AIC1570CS | 5-bit DAC/ Synchronous PWM Power Regulator with LDO and Linear Controller | Analog Intergrations Corporation |
| AIC1571 | 5-bit DAC/ Synchronous PWM Power Regulator with Dual Linear Controllers | Analog Intergrations Corporation |
| AIC1571CS | 5-bit DAC/ Synchronous PWM Power Regulator with Dual Linear Controllers | Analog Intergrations Corporation |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |