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參數(shù)資料
| 型號(hào)： | AIC164250ZTR |
| 廠商： | Analog Integrations Corporation |
| 英文描述： | 3-Pin One-Cell Step-Up DC/DC Converter |
| 中文描述： | 3引腳單細(xì)胞升壓型DC / DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大?。?/td> | 251K |
| 代理商： | AIC164250ZTR |
AIC1642
3-Pin One-Cell Step-Up DC/DC Converter
Analog Integrations Corporation
4F, 9 Industry E. 9th Rd, Science-Based Industrial Park, Hsinchu, Taiwan
TEL: 886-3-5772500
FAX: 886-3-5772510
DS-1642-01 012102
www.analog.com.tw
1
FEATURES
l
A Guaranteed Start-Up from less than 0.9 V.
l
High Efficiency.
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Low Quiescent Current.
l
Less Number of External Components needed.
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Low Ripple and Low Noise.
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Fixed Output Voltage: 2.7V, 3.0V, 3.3V, and 5V.
l
Space Saving Packages: SOT-89 and TO-92
APPLICATIONS
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Pagers.
l
Cameras.
l
Wireless Microphones.
l
Pocket Organizers.
l
Battery Backup Suppliers.
l
Portable Instruments.
DESCRIPTION
The AIC1642 is a high efficiency step-up
DC/DC converter for applications using 1 to 4
battery cells. Only three external components
are required to deliver a fixed output voltage of
2.7V, 3.0V, 3.3V, or 5V. The AIC1642 starts up
from less than 0.9V input with 1mA load. Pulse
Frequency Modulation scheme brings optimized
performance for applications with light output
loading and low input voltages. The output rip-
ple and noise are lower compared with the cir-
cuits operating in PSM mode.
The PFM control circuit operating in 100KHz
(max.) switching rate results in smaller passive
components. The space saving SOT-89 and
TO-92 packages make the AIC1642 is an ideal
choice of DC/DC converter for space conscious
applications, like pagers, electronic cameras,
and wireless microphones.
TYPICAL APPLICATION CIRCUIT
D1
GS SS12
VOUT
SW
GND
AIC1642-27
AIC1642-30
AIC1642-33
AIC1642-50
C2
22
μ
F
+
V
OUT
L1
100
μ
H
V
IN
+
C1
47
μ
F
One Cell Step-Up DC/DC Converter
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