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PDF AIC1633-5CN Data sheet ( Hoja de datos )
| Número de pieza | AIC1633-5CN | |
| Descripción | 2-Cell/ 200mA/ Step-Up DC/DC Converter | |
| Fabricantes | Analog Intergrations Corporation | |
| Logotipo |  |
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AIC1633
2-Cell, 200mA, Step-Up DC/DC Converter
FEATURES
High Efficiency Up To 87%.
Adjustable Output Voltage with Two Resistors
(AIC1633A)
Power-Saving Shutdown Mode (7µA typical).
Internal 0.8A Switch.
120KHz Switching Rate.
Adjustable Switch Current Limit.
On-Chip Low Battery Detector.
APPLICATIONS
Pocket Organizers.
Electronic Dictionaries.
Cameras.
Pagers.
Bar-Code Scanners.
LCD Displays.
Battery Backup Supplies.
Portable Instruments.
DESCRIPTION
The AIC1633 is a high efficiency step up DC/DC
converter. Only four external components are
required to deliver a fixed voltage of 3V, 3.3V, or
5V. The output voltage can be externally set to
an arbitrary value below breakdown voltage of
the power switch for AIC1633A. Efficiency
beyond 83% can be easily achieved at 70mA
load with 2.2V to 3V input voltages.
Logic-controlled shutdown mode is provided for
power saving. Switch current limit can be
programmed with a resistor. The low battery
detector can be configured as a linear regulator
or a burst mode controller performing an
extremely low supply current operation.
120KHz switching rate reduces the inductor size.
Inductors of 47µH to 150µH inductance are
recommended for most applications.
TYPICAL APPLICATION CIRCUIT
+VOUT (3.3V)
LOAD
+VIN
1N5819
D1
+
22µF
C2
TATAN
470Ω
R1
100µH
L
+
22µF
C1
NORMAL
10K
SD RILIM
NOTE: VIN≥1.8V, VOUT≤7V
ILIM/SD
VIN
SW
SGND
VOUT
LBI
LBO
CGND
AIC1633
High-Efficiency Step-Up DC/DC Converter
Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
DS-1633-03 Mar 15, 00
TEL: 886-3-5772500 FAX: 886-3-5772510
www.analog.com.tw
1
1 page  
AIC1633
TYPICAL PERFORMANCE CHARACTERISTICS (CONTINUED)
Maximum Load Current vs
Switch Current Limit Resistance
300
AIC1633/AIC1633-3
250 Ta=25°C
5% VOUT Drop
200
150 VIN=3V
VIN=1.8V
100 VIN=2.0V
50
VIN=2.2V
VIN=2.5V
Maximum Load Current vs
350 Switch Current Limit Resistance
300 VIN=1.8V
250 VIN=2.0V
AIC1633-5
Ta=25°C
5% VOUT Drop
VIN=2.2V
200
VIN=2.5V
150
VIN=3V
100 VIN=3.3V
50
0 0 100 200 300 400 500 600
RILIM (KΩ)
0
0 20 40 60 80 100 120
RILIM (KΩ)
BLOCK DIAGRAM
ILIM/SD
VIN
SW
SGND
Current Limit
-
100mV +
A
Shutdown
OSC
-
+
0.617V
-
+ 1.22V
VOUT
LBI
LBO
CGND
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet AIC1633-5CN.PDF ] | |
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| Número de pieza | Descripción | Fabricantes |
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