AN1433SSM Datasheet, PDF (1/7 Pages) Panasonic Semiconductor – High accuracy, variable output, low voltage operation shunt regulator

Voltage Regulators
AN1433SSM
High accuracy, variable output, low voltage operation shunt regulator
I Overview
The AN1433SSM is a low voltage operation and
highly accurate positive voltage variable output type shunt
regulator IC. Since the output voltage is adjustable from
approximately 1.25 V to 15 V, it is suitable for a power
supply of small-sized 3 V-system portable equipment. Also,
it contributes to the miniaturization of set equipment by
the adoption of the small type surface mounting package.
I Features
• Highly accurate reference voltage:
1.25 V (allowance: ±1%)
• Low voltage operation: 1.25 V to 14 V
• Small type surface mounting package
I Applications
• Cellular phone, PHS, office automation equipment and
other small-sized portable equipment
Unit: mm
0.20
1
2
1.60±0.10
1.20±0.10
0.20
5
3
4
SSMINI-5D
Note) The package of this product will be changed
to lead-free type (SSMINI-5DA). See the new
package dimensions section later of this
datasheet.
Marking
AQ
I Block Diagram
V_CC
0.01 µF
1
Indicates No.1 pin
K
Output
3
V_K
R1
Constant current source
I_{REF 5}
Ref.
R2
V_REF
Reference voltage
2
A
Error
amplifier
4
Output
transistor
V_K = V_REF (1 + ^RR12) + I_REF × R1
Publication date: December 2001
SFF00002CEB
Part No. (2 letters)
1