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Analog Intergrations Corporation

AIC1880 Datasheet Preview

AIC1880 Datasheet

Step-Up PWM DC/DC Converter

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AIC1880
Low Noise, Step-Up PWM DC/DC Converter
FEATURES
90% High Efficiency
1.6A, 0.3, 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, 0.3internal 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




Analog Intergrations Corporation

AIC1880 Datasheet Preview

AIC1880 Datasheet

Step-Up PWM DC/DC Converter

No Preview Available !

AIC1880
ORDERING INFORMATION
AIC1880PX XX
PACKING TYPE
TR: TAPE & REEL
TB: TUBE
PACKAGING TYPE
O: MSOP-8
P: LEAD FREE COMMERCIAL
Example: AIC1880POTR
In MSOP-8 Package & Taping &
Reel Packing Type
PIN CONFIGURATION
MSOP-8
TOP VIEW
COMP 1
FB 2
SHDN 3
GND 4
8 SS
7 FREQ
6 VIN
5 LX
ABSOLUTE MAXIMUM RATINGS
VIN, FB, SHDN , COMP, FREQ, SS to GND
-0.3 V to 5.5V
LX to GND
-0.3 V to 12V
Operating Ambient Temperature Range TA
-20°C to 85°C
Operating Maximum Junction Temperature TJ
125°C
Storage Temperature Range
-65°C to 150°C
Lead Temperature (Soldering 10 Sec.)
260°C
Thermal Resistance Junction to Case MSOP-8
75°C/W
Thermal Resistance Junction to Ambient MSOP-8
180°C/W
(Assume no Ambient Airflow, no Heatsink)
Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
2


Part Number AIC1880
Description Step-Up PWM DC/DC Converter
Maker Analog Intergrations Corporation
Total Page 11 Pages
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