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參數(shù)資料
| 型號： | ADP3603* |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Switched Capacitor Voltage Converter with Regulated Output |
| 中文描述： | 開關電容電壓轉換器，具有穩(wěn)壓輸出 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 140K |
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Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
Swtched Capacitor Voltage Converter
wth Regulated Output
ADP3603*
Analog Devices, Inc., 1996
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
FUNCT IONAL BLOCK DIAGRAM
8
S P D
S1
S
N D
S2
S
N
D
B
S3
S
N
D
7
3
V
IN
C
P
–
C
P
+
1
S4
2
V
OUT
GND
OSC
CLOCK
GEN
4
SD
FEEDBACK
CONTROL
LOOP
5
V
SENSE
GE NE RAL DE SCRIPT ION
T he ADP3603 switched capacitor voltage converter provides
a regulated output voltage with minimum voltage loss and re-
quires a minimum number of external components. In addition,
the ADP3603 does not require the use of an inductor. T he
ADP3603 provides up to 50 mA of output current with
±
3%
output accuracy.
T he internal oscillator runs at 240 kHz nominal frequency
which produces an output switching frequency of 120 kHz,
allowing the use of small charge pump and filter capacitors.
T he ADP3603 is primarily designed for use as a high fre-
quency negative voltage regulator/inverter. T he output voltages
of the ADP3603 can range from –1.2 V to –4.0 V, nominally
–3.0 V. For other output voltages, contact the factory.
T he ADP3603 dissipates less than 150 mW of power and fea-
tures fast shutdown mode capability (<5 ms) that also drops the
quiescent current to 1.4 mA (typ). For a higher output current
(120 mA) version, see the ADP3604.
*
Patent pending.
FEATURES
Fully Regulated Output
High Output Current: 50 mA
120 mA Version (ADP3604) Is Also Available
Outstanding Precision:
6
3% Output Accuracy
Input Voltage Range: +4.5 V to +6.0 V
Output Voltage: –3.0 V (Regulated)
High Switching Frequency: 120 kHz (240 kHz Internal
Oscillator)
Shutdown Capability
Small Outline 8-Pin SOIC Package
APPLICATIONS
Voltage Inverters
Negative Voltage Regulators
Computer Peripherals and Add-On Cards
Portable Instruments
Battery Powered Devices
Pagers and Radio Control Receivers
Disk Drives
Mobile Phones
PIN CONFIGURAT ION
8-Pin SOIC
(SO-8)
1
2
3
4
8
7
6
5
TOP VIEW
(Not to Scale)
NC = NO CONNECT
ADP3603
CP+
GND
V
SENSE
NC
V
OUT
V
IN
CP–
SHUTDOWN
ADP3603
8
7
3
C2
4.7μF
1
4
SHUTDOWN
0
OFF
ON
C1
4.7μF
V
IN
+4.5 – +6V
V
OUT
–3.0V
C3
4.7μF
2
5
V
SENSE
NOTE
C2: SPRAGUE, 293D105X0010B2W
C1, C3: TOKIN, 1E105ZY5UC205F
FOR BEST PERFORMANCE 10μF IS RECOMMENDED
Figure 1. Typical Application Circuit
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相關代理商/技術參數(shù) |
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|---|---|
| ADP3603AR | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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| ADP3604 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Switched Capacitor Voltage Converter with Regulated Output |
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