Analog Microelectronics, Inc.
AME7700/AME7701/AME7702
inary
m
Preli
Switched Capacitor Voltage Doublers
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General Description
The AME7700 series of economical, Charge-Pump
Converters efficiently double a +1.5V to +5.5V input to
+3.0V to +11V, with a working current exceeding 100mA.
Due to their simplicity, small size, and performance,
these CMOS converters have numerous applications.
For most cases, only (2) external capacitors are re-
quired, however, in some cases, a single capacitor is
acceptable. Minimum capacitance is obtained with the
AME7701, while the AME7700 offers the lowest stand-
by current. The AME7702 has a Frequency-Select pin
for added flexibility. The input voltage can be tripled or
quadrupled by cascading 2 Charge-Pumps. A single
alkaline battery
With it’s low start-up voltage, a single alkaline battery
can be configured with (2) AME7700’s to quadruple the
voltage and produce 5V out. Alternately, with a 5V
source, (2) AME7700’s can be configured to triple the
voltage and produce 15V out.
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Features
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Small packages: SOT-25, SOT-26
+1.5V to +5.5V Input Range
60uA Quiescent Current ( AME7700)
99% Conversion Efficiency
Output Current Exceeding 100mA
User Selectable Frequency ( AME7702)
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Applications
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Typical Connection
AME 7700/7701
Cellular Phones
Digital Cameras
Battery Chargers
High Tech Flashlights
PDA’s - LCD displays
Consumer Electronics
Pagers
Portable Electronics
V
IN
DC
IN
CN
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Pin Configuration
V
OUT
C1
CP
OUT
GND
SOT-25 Top View
C2
5
4
SOT-26 Top View
6
5
4
AME7700
AME7701
AME7702
1
1: GND
2: OUT
3: CN
2
3
4: IN
5: CP
1
1: GND
2: CN
3: OUT
2
3
4: IN
5: FC
6: CP
1
Analog Microelectronics, Inc.
AME7700/AME7701/AME7702
inary
m
Preli
Switched Capacitor Voltage Doublers
n
Absolute Maximum Ratings
P a ra m e te r
S up p ly V o lta g e
E S D C la ssific a tio n
M a x im u m
6
B
U n it
V
n
Recommended Operating Conditions
Parameter
Supply Voltage
Ambient Temperature Range
Junction Temperature
Rating
1.5 - 5.5 V
-40 to +85 C
-40 to +125 C
o
o
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Thermal Information
Parameter
Thermal Resistance (SOT-25,26)
Maximum Junction Temperature
Maximum Lead Temperature ( 10 Sec)
Maximum
250
150
300
Unit
o
C /W
o
o
C
C
Caution: Stress above the listed absolute rating may cause permanent damage to the device
3
Analog Microelectronics, Inc.
AME7700/AME7701/AME7702
inary
m
Preli
Switched Capacitor Voltage Doublers
35
30
Osc. Freq. @ 25C
Load Regulation
12
10
Oscillator Frequency (KHZ)
25
20
15
10
5
0
1
2
AME7701
8
V
OUT
AME7700
AME7700
6
4
2
0
Input Voltage (V)
3
4
5
6
0
50
I ( mA)
100
150
Load Reg
12
50
AME7700 Output Resistance @25C
Output Resistance (Ohm)
10
Vin=5
45
8
V
OUT
40
6
4
2
0
0
50
Vin=2
Vin=3.3
2.2µF
2.2µF
35
30
3.3µF
3.3µF
25
I(mA)
100
150
2
3
4
5
6
Input Voltage (V)
Electrical Characteristics vs. Temp
160
140
120
AME7700
300
250
Supply Current @ 25C
Supply Current(mA)
R
OUT
/I
DD
100
80
60
40
20
0
25
50
75
100
125
150
R
OUT
AME7701
I
D D
200
AME7701
150
100
50
0
1
2
3
4
5
6
AME7700
Temperature(
0
C)
Input Voltage (V)
5
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