LTP3564
P-1
General Description
The LTP 3564 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 LTP3564 is stable with a 1.0μF~10μF ceramic output capacitor, and uses a
precision voltage reference and feedback loop to achieve a worst-case accuracy of 3% over all
load, line, process, and temperature variations.
Features
Wide Input Voltage Range: up to 24V
Output Current: 300mA
Standard Fixed Output Voltage Options: 3.0V, 3.3V, 3.6V, and 5.0V
More Output Voltage Options Available on Request
Low IQ : 1.8µA Typically
Low Dropout Voltage
Short current protection: 350mA
Excellent Load/Line Transient Response
Line Regulation: 0.05%/V Typically
Available in SOT-89 and SOT23-3L Packages
Order Information (Ordering Number)
Model
LTP3564
Package
Ordering Number Note1
Packing Option
SOT89
LTP3564-xxXT4
Tape and Reel, 1000
SOT23-3L
LTP3564-xxXT3
Tape and Reel, 10000
Note1: xx stands for output voltage, e.g. if xx = 18, the output voltage is 1.8V; if xx = 30, the output voltage is 3.0V
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Linearin and designs are registered trademarks of Linearin Technology Corporation.
© Copyright Linearin Technology Corporation. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
FN1620-41.1 — Data Sheet
300-mA, 24-V, Low IQ , Low Dropout Regulators
LTP3564
P-2
Pin Description
3 IN
1
GND
2
IN
GND
3
OUT
OUT
1
SOT-89
2
SOT23-3L
TOP VIEW
Pin Function
Pin No.
Pin Name
Pin Function
1
GND
Ground.
2
3
IN
Supply input pin. Must be closely decoupled to GND with a
1μF or greater ceramic capacitor.
3
2
OUT
Output pin. Bypass a 1μF or greater ceramic capacitor from
this pin to ground.
SOT-89
SOT23-3L
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Linearin and designs are registered trademarks of Linearin Technology Corporation.
© Copyright Linearin Technology Corporation. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
FN1620-41.1 — Data Sheet
300-mA, 24-V, Low IQ , Low Dropout Regulators
LTP3564
P-3
Block Diagram
OUT
IN
Short
Current protection
+
Voltage
Reference
GND
Functional Description
Input Capacitor
A 1μF-10μF ceramic capacitor is recommended to connect between VIN and GND pins to decouple input power
supply glitch and noise. The amount of the capacitance may be increased without limit. This input capacitor
must be located as close as possible to the device to assure input stability and less noise. For PCB layout, a
wide copper trace is required for both VIN and GND.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Linearin and designs are registered trademarks of Linearin Technology Corporation.
© Copyright Linearin Technology Corporation. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
FN1620-41.1 — Data Sheet
300-mA, 24-V, Low IQ , Low Dropout Regulators
P-4
LTP3564
Output Capacitor
An output capacitor is required for the stability of the LDO. The recommended output capacitance is from
1μF to 10μF, Equivalent Series Resistance (ESR) is from 5mΩ to 100mΩ, and temperature characteristics
are X7R or X5R. Higher capacitance values help to improve load/line transient response. The output
capacitance may be increased to keep low undershoot/overshoot. Place output capacitor as close as
possible to OUT and GND pins.
Low Quiescent Current
The LTP3559, consuming only around 1.8μA for all input range and output loading, provides great power
saving in portable and low power applications.
Short Current Limit Protection
When output current at the OUT pin is higher than current limit threshold or the OUT pin is short-circuit to
GND, the short current limit protection will be triggered and clamp the output current to approximately
70mA to prevent over-current and to protect the regulator from damage due to overheating.
Absolute Maximum Ratings
Parameter
IN pin to GND pin
Thermal Resistance (Junction to Ambient)
Power Dissipation @ 25℃
Rating
Unit
–0.3 to 28
V
SOT-89
135
SOT23-3L
360
SOT-89
750
SOT23-3L
280
℃/W
mw
Operating Junction Temperature
–40 to 125
℃
Storage Temperature
–65 to 150
℃
300
℃
ESDA/JEDEC
JS-001-2017
±2000V
Lead Temperature (Soldering, 10 sec)
ESD (HBM mode)
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Linearin and designs are registered trademarks of Linearin Technology Corporation.
© Copyright Linearin Technology Corporation. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
FN1620-41.1 — Data Sheet
300-mA, 24-V, Low IQ , Low Dropout Regulators
LTP3564
P-5
Electrical Characteristics
(VIN= VOUT+2V, Ta= 25°,CIN=10uF, COUT=10uF unless otherwise noted)
PARAMETER
SYMBOL
TEST CONDITIONS
Input Voltage Operation Range
VIN
Dropout Voltage
VDROP
DC Supply Quiescent Current
IQ
Regulated Output Voltage
VOUT
IOUT=1mA
Output Voltage Line Regulation
RegLINE
VIN = VOUT +1V to 30V,
IOUT = 10mA
(ΔVOUT/ΔVIN/VOUT)
Output Voltage Load Regulation
RegLOAD
Maximum Output Current
MIN
TYP
VOUT= 3.3V, IOUT = 50mA
160
VOUT= 3.3V, IOUT = 100mA
320
1.8
MAX
UNIT
24
V
mV
3
µA
VOUT×1.03
V
0.05
0.2
%/V
IOUT from 1mA to 50mA
VIN≤35V
60
100
IOUT
VIN = VOUT +1V
300
mA
Short Current Protection
ISHORT
OUT short to GND
350
mA
Power Supply Rejection Ratio
PSRR
IOUT=30mA
Output Noise
eN
10Hz to 100kHz,
IOUT = 30mA,
VOUT×0.97
f=100Hz
45
f=1KHz
39
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Linearin and designs are registered trademarks of Linearin Technology Corporation.
© Copyright Linearin Technology Corporation. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
200
mv
dB
µVRMS
FN1620-41.1 — Data Sheet
300-mA, 24-V, Low IQ , Low Dropout Regulators
LTP3564
P-6
TYPICAL PERFORMANCE CHARACTERISTICS
350
300
250
200
150
100
50
0
-50
-100
Iout VS. Vdrop
Vin VS. Iq
2.5
Vdrop
Iq
2
1.5
1
0.5
0
20
40
60
80
100
120
0
0
5
Fig1. Iout VS. Vdrop
10
15
20
25
Fig2. Vin VS. Iq
Fig3. Load-Transient Response
Fig4. Load-Transient Response
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Linearin and designs are registered trademarks of Linearin Technology Corporation.
© Copyright Linearin Technology Corporation. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
30
35
FN1620-41.1 — Data Sheet
300-mA, 24-V, Low IQ , Low Dropout Regulators
LTP3564
P-7
Application Circuits
VIN
IN
OUT
1µF to 10µF
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Linearin and designs are registered trademarks of Linearin Technology Corporation.
© Copyright Linearin Technology Corporation. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
VOUT
1µF to 10µF
FN1620-41.1 — Data Sheet
300-mA, 24-V, Low IQ , Low Dropout Regulators
LTP3564
P-8
Package Dimension
SOT-89
4.4~4.6
1.4~1.6
2.3~2.6
3.94~4.25
1.55
0.9~1.2
0.35~0.44
0.32~0.52
1.50
3.00
Unit:mm
SOT23-3L
2.82~3.02
0.3~0.6
0.7
1.5~1.7
2.6~3.0
0.3~0.4
0.95
0.1~0.2
1.05~1.25
0.1max
1.8~2.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Linearin and designs are registered trademarks of Linearin Technology Corporation.
© Copyright Linearin Technology Corporation. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
Unit:mm
FN1620-41.1 — Data Sheet
300-mA, 24-V, Low IQ , Low Dropout Regulators