AIC1628CS Analog Intergrations Corporation, AIC1628CS Datasheet

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AIC1628CS

Manufacturer Part Number
AIC1628CS
Description
Manufacturer
Analog Intergrations Corporation
Datasheets

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AIC1628CS
Manufacturer:
AIC
Quantity:
1 980
Part Number:
AIC1628CS-TR
Manufacturer:
AIC
Quantity:
400
Analog Integrations Corporation
DS-1628-00
5V
FEATURES
4V to 24V Input Voltage Operation.
Adjustable Output Voltage.
Low Quiescent Current at 100µA.
Pulse-Skipping and Pulse-Frequency Modulation
Maintain High Efficiency (max. 95%).
90KHz to 250KHz Oscillator Frequency.
Power-Saving Shutdown Mode (8µA Typical).
Push-Pull Driver Output.
APPLICATIONS
Flash Memory Programming Power Supply.
Positive LCD Contrast Bias for Notebook &
Palmtop Computers.
Step-Up DC/DC Converter Module.
Telecom Power Supply.
TYPICAL APPLICATION CIRCUIT
C2
Color LCD Contrast Bias Supply
VIN
VREF
FB
SHDN
16.5K 0.033µF
R2
AIC1628
C3
3-Cell, High-Efficiency, Step-Up DC/DC Converter
DLOW
GND
DHI
CL
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
TEL: 886-3-5772500
470K
R1
0.01µF
2SK940
Q1
C4
*Fuse
60mΩ
**L1
68µH
1N5819
D1
220µF
*Buss Fuse MCR-2A
**Sumida CDR105
C5
FAX: 886-3-5772510
+
+
0.1µF
C1
120µF
C6
+5V ~ 24V
V
IN
+36V
>50mA
The AIC1628 is a high performance step-up
DC/DC converter, designed to drive an external
power switch to generate programmable posi-
tive voltages. In the particularly suitable LCD
contrast bias and flash memory programming
power supply applications, typical full-load effi-
ciencies are 85% to 95%. 4V to 24V input op-
eration range allows the AIC1628 to be powered
directly by the battery pack in the most battery-
operated applications for greater efficiency.
Output voltage can be scaled to 40V or greater
by two external resistors. A Pulse-Frequency
Modulation scheme is employed to maintain
high efficiency conversion under wide input
voltage range. Quiescent current is about
100µA and can be reduced to 8µA in shutdown
mode. Switching frequency being around 90KHz
to 250KHz range, small size switching compo-
nents are ideal for battery powered portable
equipments, like notebook and palmtop com-
puters.
V
OUT
DESCRIPTION
95
90
85
80
0
Efficiency vs. Output Current
50
V
V
IN
IN
=5V
Load Current (mA)
=13V
100
V
IN
V
=9V
OUT
www.analog.com.tw
AIC1628
=36V
150
V
IN
=18V
1
200

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