AIC AIC1633CS, AIC1633CN, AIC1633ACS, AIC1633ACN, AIC16335CS Datasheet
...
AIC1633
2-Cell, 200mA, Step-Up DC/DC Converter
Analog Integrations Corporation 4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC www.analog.com.tw
DS-1633-03 Mar 15, 00 TEL: 886-3-5772500 FAX: 886-3-5772510
1
FEATURES
High Efficiency Up To 87%.
Adjustable Output Voltage with Two Resistors
(AIC1633A)
Power-Saving Shutdown Mode (7µA typic al) .
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
AIC1633
100µH
L
+V
OUT
(3.3V)
LOAD
22µF
C1
22µF
C2
TATAN
NORMAL
R
ILIM
SD
ILIM/SD VOUT
VIN LBI
SW LBO
SGND CGND
1N5819
D1
+
+
470Ω
R1
10K
+V
IN
NOTE: VIN≥1.8V, V
OUT
≤7V
High-Efficiency Step-Up DC/DC Converter
AIC1633
2
ORDERING INFORMATION
PACKAGE TYPE
N: PLASTIC DIP
S: SMALL OUTLINE
TEMPERATURE RANGE
C=0°C~+70°C
OUTPUT VOLTAGE
DEFAULT:3.3V
3: 3.0V
5: 5.0V
A: Adjustable
ORDER NUMBER
AIC1633CN
AIC1633-3CN
AIC1633-5CN
(PLASTIC DIP
)
PIN CONFIGURATION
AIC1633CS
AIC1633-3CS
AIC1633-5CS
(PLASTIC SO)
TOP VIEW
LBO
1
3
4
2
8
6
5
7
VOUT
VIN
SW
SGND
LBI
CGND
ILIM/SD
AIC1633ACN
(PLASTIC DIP
)
AIC1633ACS
(PLASTIC SO)
TOP VIEW
LBO
1
3
4
2
8
6
5
7
VOUT
VIN
SW
GND
LBI
FB
ILIM/SD
AIC1633 XXX
ABSOLUTE MAXIMUM RATINGS
Supply Voltage .........................................................……………………....................... 7.0V
Operating Temperature Range ...................................……….……................. -20°C ~ 80°C
Storage Temperature Range .........................................……..……….......
-65°C ~ 150°C
TEST CIRCUIT
Refer to Typical Application Circuit.
ELECTRICAL CHARACTERISTICS (V
IN
=3.0V, Ta=25°°°°C, unless otherwise specified.)
PARAM ETER TEST CONDITIONS MIN. TYP. MAX. UNIT
Input Voltage 1.8 7 V
Output Voltage
I
LOAD
=70mA
AIC1633
AIC1633-3
AIC1633-5
3.16
2.88
4.80
3.3
3
5
3.44
3.12
5.20
V
Switch off Current
105 140
µA
No Load Current
AIC1633/AIC1633-3
AIC1633-5
160
250
µA
Shutdown Mode Current
7 15
µA
Shutdown Recovery Time
V
IN
=2.5V, I
LOAD
=70mA 1.8 mS
AIC1633
3
ELECTRICAL CHARACTERISTICS (CONTINUED)
PARAM ETER TEST CONDITIONS MIN. TYP. MAX. UNIT
Efficiency
I
LOAD
=70mA
AIC1633/AIC1633-3
AIC1633-5
87
86
%
Line Regulation
I
LOAD
=40mA
AIC1633, V
IN
=2.0~3.3V
AIC1633-3, V
IN
=2.0~3.0V
AIC1633-5, V
IN
=2.2~4.5V
0.6
0.6
0.5
%V
OUT
Load Regulation
I
LOAD
=170mA
AIC1633/AIC1633-3
AIC1633-5
0.6
0.5
%V
OUT
Oscillator Frequency
90 120 150 KHz
LBI Pin Trip Point
1.17 1.22 1.27 V
FB Threshold Voltage
AIC1633A 0.598 0.617 0.636
V
SW “ON Resistance”
AIC1633/AIC1633-3
AIC1633-5
1.75
1.25
Ω
LBO “ON Resistance”
V
IN
=2V 45 Ω
SW Off Leakage
1
µA
Input Pin Bias Current
10 nA/Pin
Output Pin Leakage
10 nA/Pin
TYPICAL PERFORMANCE CHARACTERISTICS
Switch Voltage vs Current
ISW (A)
V
SW
(V)
0 0.5 1 1.5 2 2.5
0
0.5
1
1.5
2
2.5
3
Ta = 25°C
AIC1633-5
AIC1633/AIC1633-3
SW ON Resistance vs Temperature
Temperature (°C)
0 1020304050607080
1
1.2
1.4
1.6
1.8
2
AIC1633-5
AIC1633/AIC1633-3
SW R
DS ON
(Ω)
Loading...