|
|
PDF AIC1880 Data sheet ( Hoja de datos )
| Número de pieza | AIC1880 | |
| Descripción | Step-Up PWM DC/DC Converter | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de AIC1880 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
|
No Preview Available !
AIC1880
Low Noise, Step-Up PWM DC/DC Converter
FEATURES
90% High Efficiency
1.6A, 0.3Ω, 12V Internal Power MOSFET
640kHz/1.2MHz Pin-Selectable Operation
Frequency
2.6V to 5.5V Input Range
Low Shutdown Current: 0.1µA
Programmable Soft-Start
External Compensation Network
Adjustable Output from VIN to 11V
Thin 8-Pin MSOP Package
APPLICATIONS
TFT Bias Supplies
Handheld Devices
PCMCIA Cards
Portable Equipment
DESCRIPTION
The AIC1880 is a step-up DC/DC converter with a
1.6A, 0.3Ω internal power switch. A soft-start pro-
grammed with an external capacitor sets the input
current ramp rate. Pin-selectable high switching
frequency (640kHz or 1.2MHz) allows easy filter-
ing and low noises. An external compensation pin
gives users flexibility in setting frequency com-
pensation, which makes it feasible to use the
small, low ESR ceramic output capacitors. The
AIC1880 converts input ranging 2.6V to 5.5V into
output voltage up to 11V. The device is available
in a low profile 8-lead MSOP package.
TYPICAL APPLICATION CIRCUIT
3.3V
Cin
10uF
1.2MHz 640kHz
ON OFF
Ccomp2
20pF
L
6.8uH
U1
6 VIN
LX
7 FREQ GND
3 SHDN
FB
1 COMP
SS
5
4
2
8
Rcomp AIC1880
33k
Ccomp
1200pF
D
SS24
Css
0.022uF
10V
Cout R1
10uF 1.6M
R2
220k
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-1880P-01 101706
1
1 page  
AIC1880
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
10.60
10.55
10.50
10.45
10.40
10.35
10.30
10.25
10.20
10.15
10.10
10.05
10.00
0
TA = +85oC
TA = -20oC
TA = +25oC
20 40 60 80 100 120 140 160 180 200 220 240 260
OUTPUT CURRENT (mA)
Fig. 5 Load regulation
1600
1400
1200
1000
V OUT = 5V
800
600 V OUT = 10V
400
200
0
3.0 3.2 3.4
f OSC = 640kHz
3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0
INPUT VOLTAGE (V)
Fig. 6 Maximum output current vs. Input voltage
∆IOUT
fOSC=640kHz
L=10µH
COUT=32µF
RCOMP = 33k
CCOMP = 1500pF
CCOMP2 = 20pF
VOUT AC Couple
∆IOUT
fOSC=640kHz
L=6.8µH
COUT=44µF
RCOMP = 62k
CCOMP = 820pF
CCOMP2 = 10pF
VOUT AC Couple
Fig. 7 Load-transient response at VIN=3.3V, VOUT=10V
Fig. 8 Load-transient response at VIN=3.3V, VOUT=5V
SHDN
VOUT
IL
VIN=3.3V
VOUT=10V
fOSC=640kHz
IOUT=10mA
COUT=32µF
SHDN
VOUT
IL
VIN=3.3V
VOUT=10V
fOSC=640kHz
IOUT=10mA
COUT=32µF
CSS=4.7nF
Fig. 9 Startup waveform without soft-start
Fig. 10 Startup waveform with soft-start
5
5 Page 
AIC1880
PHYSICAL DIMENSIONS (unit: mm)
MSOP-8
D
AA
e
SEE VIEW B
WITH PLATING
b
S MSOP-8
Y
M MILLIMETERS
B
O
L
MIN.
MAX.
A 1.10
A1 0.05
0.15
A2 0.75
b 0.25
0.95
0.40
c 0.13
D 2.90
0.23
3.10
E 4.90 BSC
E1 2.90
3.10
e 0.65 BSC
L 0.40
0.70
q 0°
6°
L
VIEW B
BASE METAL
SECTION A-A
GAUGE PLANE
SEATING PLANE
Note: 1. Refer to JEDEC MO-187AA.
2. Dimension "D" does not include mold flash, protrusions
or gate burrs. Mold flash, protrusion or gate burrs shall not
exceed 6 mil per side .
3. Dimension "E1" does not include inter-lead flash or protrusions.
4. Controlling dimension is millimeter, converted inch
dimensions are not necessarily exact.
Note:
Information provided by AIC is believed to be accurate and reliable. However, we cannot assume responsibility for use of any cir-
cuitry other than circuitry entirely embodied in an AIC product, nor for any infringement of patents or other rights of third parties that
may result from its use. We reserve the right to change the circuitry and specifications without notice.
Life Support Policy: AIC does not authorize any AIC product for use in life support devices and/or systems. Life support devices or
systems are devices or systems which, (I) are intended for surgical implant into the body or (ii) support or sustain life, and whose
failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected
to result in a significant injury to the user.
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet AIC1880.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| AIC1880 | Step-Up PWM DC/DC Converter | 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 |