SUM3559A
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
(and designs) are registered trademarks of SUMSEMI Corporation.
Copyright SUMSEMI Corporation. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
www.sumsemi.com.
High Voltage, Low Power LDO
DESCRIPTION
The SUM3559A is a high voltage, low power consumption and high performance LDO. The family uses an
advanced CMOS process and a PMOSFET pass device to achieve fast start-up, with high output voltage
accuracy. The SUM3559A is stable with a 1.0 μF ~ 10 μF ceramic output capacitor, and uses a precision
voltage reference and feedback loop to achieve a worst-case accuracy of 1% over all load, line, process, and
temperature variations.
FEATURES
Wide Input Voltage Range: up to 45 V
Output Current: 350 mA
Standard Fixed Output Voltage Options: 3.3 V, 5.0 V
Other Output Voltage Options Available on Request
Low I
Q
: 2.6 µA
Low Dropout Voltage
Short current protection: 150 mA
Excellent Load/Line Transient Response
Line Regulation: 0.01%/V typical
Package: SOT89-3
ORDER INFORMATION
Model
Package
Ordering Number
Packing Option
SUM3559A
SOT89-3
SUM3559A-33P
Tape and Reel, 1000
SOT89-3 (L-Type)
SUM3559A-33PL
Tape and Reel, 1000
SOT89-3
SUM3559A-50P
Tape and Reel, 1000
SOT89-3 (L-Type)
SUM3559A-50PL
Tape and Reel, 1000
SUM3559A
2 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
(and designs) are registered trademarks of SUMSEMI Corporation.
Copyright SUMSEMI Corporation. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
www.sumsemi.com.
PIN CONFIGURATION (Top View)
GND IN
OUT
1 2 3
SOT89-3 SOT89-3 (L-Type)
PIN DESCRIPTIONS
Pin
Symbol
Description
SOT89-3
SOT89-3 (L-Type)
1
2
GND
Ground.
2
3
IN
Supply input pin.
3
1
OUT
Output pin.
BLOCK DIAGRAM
IN OUT
GND
Short-Current
Protection
Voltage
Reference
OUT GND
IN
1 2 3
GND IN
OUT
1 2 3