ICs for Telephone
AN1201SM
Polarity inverting charge pump DC/DC converter IC
I
Overview
AN1201SM is a negative voltage generation IC for
bias voltage of transmission power module of cellular
phones. This IC is a polarity inverting DC/DC converter
to change from positive voltage into negative voltage.
2.00
±0.10
1.30
±0.10
2.10
±0.10
0.225
±0.05
1.65
±0.10
0.225
±0.05
Unit: mm
1
0.65
±0.05
0.65
±0.05
5
0.20
±0.05
0.8
±0.10
I
Features
•
High power conversion efficiency: 89% typ. (when output
current is 5 mA.)
•
Low output resistance: 20
Ω
typ.
•
High voltage conversion efficiency: 99.9%
•
Small (S-MINI) package
2
3
4
•
Cellular phones
SMINI-5D
Note) The package of this product will be changed
to lead-free type (SMINI-5DA). See the new
package dimensions section later of this
datasheet.
I
Block Diagram
C2
5
S2
GND
4
•
Marking
Part No.: "AL" indicates AN1201SM.
A L
OSC
S1
S3
Pin No.1 displayed
1
V
IN
2
V
OUT
S4
3
C1
0 to 0.10
I
Applications
0.15
±0.05
Publication date: November 2001
SDE00001BEB
1
AN1201SM
I
Pin Descriptions
Pin No.
1
2
3
4
5
Symbol
V
IN
V
OUT
C1
GND
C2
Supply voltage pin
Inverted output pin
Charge pump capacitor's positive polarity side connecting pin
Ground pin
Charge pump capacitor's negative polarity side connecting pin
Description
I
Absolute Maximum Ratings
Parameter
Supply voltage
Supply current
Output current
Power dissipation
*2
Operating ambient temperature
*2
Storage temperature
*1
Symbol
V
IN
I
IN
I
O
P
D
T
opr
T
stg
Rating
3.3
10
20
48
−30
to
+85
−55
to
+125
Unit
V
mA
mA
mW
°C
°C
Note) 1. Do not apply external currents or voltages to any pins not specifically mentioned.
For circuit currents, (+) denotes current flowing into the IC, and (−) denotes current flowing out of the IC.
2. *1: Except for the power dissipation, operating ambient temperature and storage temperature, all ratings are for T
a
= 25°C.
*2: T
a
= 85°C, For the independent IC without a heat sink.
I
Recommended Operating Range
Parameter
Supply voltage
Symbol
V
IN
Range
2.0 to 3.0
Unit
V
I
Electrical Characteristics at
V
IN
=
2.5 V, C1
=
1
µF,
T
a
=
25°C
Parameter
Consumption current
Oscillator frequency
Output resistance
Voltage conversion efficiency
Power efficiency
Consumption current in Sleep mode
•
Design reference data
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
Unless otherwise specified: V
IN
=
2.5 V, T
a
=
25°C
Symbol
I
CC
f
OSC
R
OUT
V
η
P
η
I
OFF
No load
No load
Load 500
Ω
No load
Load 500
Ω
Conditions
Min
90
95.0
80
Typ
0.25
125
99.9
89
Max
1
160
50
1
Unit
mA
kHz
Ω
%
%
µA
V
IN
=
0.2 V, no load
Parameter
Oscillator frequency
Symbol
f
OSC
Conditions
V
IN
=
2.5 V, no load
T
a
= −30°C
to 85°C
Min
66
Typ
125
Max
198
Unit
kHz
2
SDE00001BEB
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eral electronic equipment (such as office equipment, communications equipment, measuring in-
struments and household appliances).
Consult our sales staff in advance for information on the following applications:
•
Special applications (such as for airplanes, aerospace, automobiles, traffic control equipment,
combustion equipment, life support systems and safety devices) in which exceptional quality and
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harm the human body.
•
Any applications other than the standard applications intended.
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make sure that the latest specifications satisfy your requirements.
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mum rating, the range of operating power supply voltage and heat radiation characteristics. Other-
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Due to modification or other reasons, any information contained in this material, such as available
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2001 MAR
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