AIC1641 ETC [List of Unclassifed Manufacturers], AIC1641 Datasheet

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AIC1641

Manufacturer Part Number
AIC1641
Description
LOW VOLTAGE STEP-UP DC/DC CONVERTER
Manufacturer
ETC [List of Unclassifed Manufacturers]
Datasheet
    TYPICAL APPLICATION CIRCUIT
        FEATURES
        APPLICATIONS
ANALOG INTEGRATIONS CORPORATION
4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C.
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Guaranteed Start-Up from Below 0.9 V.
High Efficiency.
Low Quiescent Current.
Fixed Output Voltage: 2.7V, 3.0V, 3.3V, and 5V.
Logic Controlled Shutdown.
External Switch Driver for High Power Level Applica-
tion.
Pagers.
Cameras.
Wireless Microphones.
Pocket Organizers.
Battery Backup Suppliers.
Portable Instruments.
0.9V
V
IN
+
33 H
L1
47 F
C1
2SD1803
One Cell Step-Up DC/DC Converter
Q1
1N5819
D1
10nF
300
R
C
B
B
    DESCRIPTION
LOW VOLTAGE STEP-UP DC/DC CONVERTER
V
TEL: (8863)577-2500 FAX:(8863)577-2510
www.analog.com.tw
OUT
The AIC1641 is a high efficiency step-up DC/DC
converter for applications using 1 to 4 battery cells.
Only three external components are required to de-
liver a fixed output voltage of 2.7V, 3.0V, 3.3V, or
5.0V.
Pulse Frequency Modulation scheme brings opti-
mized performance for applications with light output
loading and low input voltage. The output ripple
and noise are lower compared with the circuit op-
erating in PSM mode. The AIC1641 starts up from
below 0.9V input to boost either 2.7V, 3.0V, 3.3V,
or 5.0V output with 1mA load.
Some useful features include, shutdown mode for
saving the life of battery. The PFM control circuit
operates in 100KHz (max.) switching rate, resulting
in smaller passive component size, which makes
the AIC1641 an ideal choice of DC/DC converter
for space conscious applications.
V
EXT
OUT
AIC1641
GND
CE
SPEC NO: DS-1641-00 05/04/00
AIC1641
1

Related parts for AIC1641

AIC1641 Summary of contents

Page 1

... The output ripple and noise are lower compared with the circuit op- erating in PSM mode. The AIC1641 starts up from below 0.9V input to boost either 2.7V, 3.0V, 3.3V, or 5.0V output with 1mA load. Some useful features include, shutdown mode for saving the life of battery ...

Page 2

... LOW VOLTAGE STEP-UP DC/DC CONVERTER ORDER NUM BER AIC1641-27CS AIC1641-30CS AIC1641-33CS AIC1641-50CS (SO8) 27: 2.7V 30: 3.0V AIC1641-27CS 33: 3.3V AIC1641-30CS 50: 5.0V AIC1641-33CS AIC1641-50CS (SO8) AIC1641-27CW AIC1641-30CW AIC1641-33CW AIC1641-50CW (SOT89-5) AIC1641 EXT VOUT 2.5V CE GND Oscillator Test Circuit www.analog.com.tw TEL: (8863)577-2500 FAX:(8863)577-2510 AIC1641 SPEC NO: DS-1641-00 05/04/00 PIN CONFIGURATION 1 CE ...

Page 3

... HOLD DD1 DD2 300 200 R EXTH 185 130 110 80 R EXTL 70 60 DUTY 105 OS C 1.2 1.3 V CEH 1.4 2.1 www.analog.com.tw TEL: (8863)577-2500 FAX:(8863)577-2510 AIC1641 MAX. UNIT 2.767 3.075 V 3.382 5.125 0 130 KHz V 3 ...

Page 4

... ELECTRICAL CHARACTERISTICS PARAMETER Chip Enable Pin Input Low Voltage CE Pin Input Current Efficiency " TYPICAL PERFORMANCE CHARACTERISTICS Inductor (L1 (Pin Type) Diode (D1) : 1N5819 Schottky Type AIC1641-27 Loading Regulation (L=33uH) 2.80 2.75 2.70 2.65 2.60 Vin=1.2V 2.55 2.50 2.45 Vin=0.9V 2. 100 150 200 Output Current (mA) AIC1641-30 Load Regulation (L=33uH) 3 ...

Page 5

... Output Current (mA) AIC1641-50 Load Regulation (L=33uH) 5.5 5.0 4.5 4.0 3.5 Vin=1.5V 3.0 Vin=1.2V 2.5 Vin=0.9V 2.0 1.5 0 100 200 300 Output Current (mA) AIC1641-27 Start-up & Hold-on Voltage (L=33uH) 2.0 1.8 1.6 1.4 Start up 1.2 1.0 0.8 0.6 0.4 Hold on 0.2 0 100 Output Current (mA) ANALOG INTEGRATIONS CORPORATION 4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. ...

Page 6

... TYPICAL PERFORMANCE CHARACTERISTICS AIC1641-33 Start-up & Hold-on Voltage (L=33uH) 2.0 1.8 1.6 1.4 Start up 1.2 1.0 0.8 0.6 0.4 Hold on 0.2 0 100 Output Current (mA) AIC1641 Output Voltage vs Temperature 6.0 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 -40 - Temperature ( AIC1641 Maximum Duty Cycle vs Temperature -40 - Temperature ( ANALOG INTEGRATIONS CORPORATION 4F, 9 Industry E ...

Page 7

... TYPICAL PERFORMANCE CHARACTERISTICS AIC1641 EXT "L" On-Resistance 130 120 110 100 -40 - Temperature (  BLOCK DIAGRAM VOUT  PIN DESCRIPTIONS NC - Not Connected. VOUT - IC supply pin. Connect V tor output Chip enable pin (Active High). ANALOG INTEGRATIONS CORPORATION 4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. ...

Page 8

... APPLICATION INFORMATION GENERAL DESCRIPTION AIC1641 PFM (pluse frequency modulation) control- ler ICs combine a switch mode regulator, push pull driver, precision voltage reference, and voltage de- tector in a single monolithic device. They offer both extreme low quescient current, high efficiency, and very low gate threshold voltage to ensure start-up with low battery voltage ( 0 ...

Page 9

... ON time. Sec- I OUT ond, the inductance must also be high enough so maximum current rating of AIC1641 and inductor are not exceed at the other worst case cindition of maximum input voltage and ON time. Lastly, the in- ductor must have sufficiently low DC resistance so excessive power is not lost as heat in the windings ...

Page 10

... OUT OUT Rated Current (A) 0.7 0.5 0.7 0.5 1 OUT OUT OUT = Rs=Inductor DC R; OUT OUT OUT OUT OUT OUT V OUT AIC1641 Hieght (mm) 4.5 4.5 5.0 10.0 P OUT 10 ...

Page 11

... LEAD PLASTIC SO (unit: mm ANALOG INTEGRATIONS CORPORATION 4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. LOW VOLTAGE STEP-UP DC/DC CONVERTER www.analog.com.tw TEL: (8863)577-2500 FAX:(8863)577-2510 AIC1641 SPEC NO: DS-1641-00 05/04/00 SYMBOL MIN MAX A 0.76 0. 0.20 B 0.28 0.38 C 0.13 0.23 D 2.90 3.10 E 2.90 3 ...

Page 12

... AIC1641-33CW BD33 AIC1641-50CW BD50 ANALOG INTEGRATIONS CORPORATION 4F, 9 Industry E. 9th Road, Science-based Industrial Park , Hsinchu, Taiwan, R.O.C. LOW VOLTAGE STEP-UP DC/DC CONVERTER SYMBOL www.analog.com.tw TEL: (8863)577-2500 FAX:(8863)577-2510 AIC1641 SPEC NO: DS-1641-00 05/04/00 MIN MAX 1.40 1.60 0.32 0.52 1.40 1.80 0.30 0.50 4.40 4.60 2.40 2.60 300 (TYP) 1.50 (TYP) 4.20 5.00 0.80 --- 12 ...

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