LTP3636
P-1
DESCRIPTION
The LTP3636 series of CMOS low dropout regulators are designed specifically for portable batterypowered applications which require ultra-low power consumption. The ultra-low quiescent current
of only 0.8μA ensures features of long battery life, and the built-in dynamic transient boost
improves the device transient response for wireless communication applications.
The LTP3636 series are available in SOT23-3L and SOT23-5L packages.
FEATURES
0.8 μA Ultra-Low Quiescent Current
Output Voltage Range: 1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, and 3.6V
Operating Input Voltage Range: 2.0V to 5.5V
Low Dropout: 170mV Typically at 150mA Load and 1.8V Output
High Output Voltage Accuracy: ±1.5%
Stable with 1μF Ceramic Capacitors
Over-Current Protection
Thermal Shutdown Protection
With Auto Discharge Function at Off State
APPLICATIONS
Battery Powered Equipments
Portable Communication Equipments
Cameras, Image Sensors and Camcorders
Label Information
ORDER INFORMATION
Model
LTP3636
Package
Ordering Number Note1
Packing Option
SOT23-3L
LTP3636-xxYT3
Tape and Reel, 3000
SOT23-5L
LTP3636-xxYT5
Tape and Reel, 3000
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.
FN1620-29.1 — Data Sheet
300mA, Low Dropout, Ultra-Low IQ Linear Regulators
LTP3636
P-2
PIN CONFIGURATION (Top View)
IN
3
1
2
GND
OUT
IN
1
GND
2
NC
3
5
OUT
4
NC
SOT23-5L
SOT23-3L
PIN DESCRIPTIONS
Pin
Symbol
Description
1
IN
Power Supply Input Voltage
1
2
GND
Ground.
/
3
NC
No Connection.
/
4
NC
No Connection.
2
5
OUT
Output Pin
SOT23-3
SOT23-5
3
ABSOLUTE MAXIIMUM RATINGS
Parameter
Symbol
Value
Unit
Input Voltage
VIN
6.5
V
Output Voltage
VOUT
−0.3 to VIN + 0.3
V
TJ
150
°C
Storage Temperature
TSTG
−55 to 150
°C
Thermal Characteristics, Thermal
Resistance, Junction-to-Air
RθJA
Operating Junction Temperature
Human Body Model
ESD Capability
Current Maximum Rating
SOT23-3L
357
SOT23-5L
250
ESD
Latch up
°C /W
6000
V
2000
V
200
mA
NOTE:Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
These are stress ratings only, and functional operation of the device at these or any other conditions beyond those
indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
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.
FN1620-29.1 — Data Sheet
300mA, Low Dropout, Ultra-Low IQ Linear Regulators
LTP3636
P-3
CAUTION
This integrated circuit can be damaged by ESD if you don’t pay attention to ESD protection. LINEARIN
recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper
handling and installation procedures can cause damage. ESD damage can range from subtle performance
degradation to complete device failure. Precision integrated circuits may be more susceptible to damage
because very small parametric changes could cause the device not to meet its published specifications.
LINEARIN reserves the right to make any change in circuit design, specification or other related things if
necessary without notice at any time. Please contact LINEARIN sales office to get the latest datasheet.
RECOMMENDED OPERATING CONDITIONS
Symbol
Item
Rating
Unit
VIN
Input Voltage
2.0 to 5.5
V
IOUT
Output Current
0 to 300
mA
TA
Operating Ambient Temperature
−40 to 85
℃
CIN
Effective Input Ceramic Capacitor Value
0.47 to 4.7
μF
COUT
Effective Output Ceramic Capacitor Value
0.47 to 4.7
μF
ELECTRICAL CHARACTERISTICS
V IN = 2.5 V, I OUT = 1 mA, C IN = 1 µF, C OUT = 1 µF, T A = +25 °C, unless otherwise noted.
Min
Max
Unit
2.0
5.5
V
TA = +25 °C
−1.5
+1.5
−40 °C ≤ TA ≤ 85 °C
−2.5
+2.5
Test Conditions
Typ
Symbol
Parameter
VIN
Operating Input
VOUT
Output Voltage
IQ
Quiescent Current
IOUT = 0 mA
0.8
1.1
μA
LineReg
Line Regulation
2.5 V ≤ VIN ≤ 5.5 V, IOUT = 1 mA
0.1
0.2
%/V
LoadReg
Load Regulation
1 mA ≤ IOUT ≤ 150 mA, VIN = 2.5 V
20
mV
VDROP
Dropout Voltage
IOUT = 150 mA
170
mV
I_LMT
Current Limit
ISHORT
Short Circuit Current
VOUT = 0 V
PSRR
Power supply Rejection Ratio
IOUT = 100 mA
eN
Output Noise Voltage
VIN = 2.5 V, IOUT = 1 mA,
f = 10 Hz to 100 kHz, COUT = 1 μF
300
90
550
%
mA
mA
f = 1 kHz
−55
f = 10 kHz
−52
dB
100
μVrms
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.
FN1620-29.1 — Data Sheet
300mA, Low Dropout, Ultra-Low IQ Linear Regulators
LTP3636
P-4
APPLICATION CIRCUITS
INPUT
OUTPUT
OUT
IN
1μF
1μF
GND
Applications Information
General
The LTP3636 is a high performance 300mA Linear Regulator with Ultra Low I Q. This device delivers
low Noise and high Power Supply Rejection Ratio with excellent dynamic performance due to
employing the Dynamic Quiescent Current adjustment which assure ultra low I Q consumption at noload state. These parameters make the LTP3636 device very suitable for various battery powered
applications.
Input Decoupling (C IN)
It is recommended to connect at least a 1μF Ceramic X5R or X7R capacitor between IN and GND pins
of the device. This capacitor will provide a low impedance path for any unwanted AC signals or Noise
superimposed onto constant Input Voltage. The good input capacitor will limit the influence of input
trace inductances and source resistance during sudden load current changes.
Higher capacitance and lower ESR Capacitors will improve the overall line transient response.
Output Decoupling (C OUT)
The LTP3636 does not require a minimum Equivalent Series Resistance (ESR) for the output capacitor.
The X5R and X7R types have the lowest capacitance variations over temperature thus they are
recommended. There is recommended connect the output capacitor as close as possible to the output
pin of the regulator.
Current Limit Protection
When output current at the OUT pin is higher than current limit threshold, the current limit protection
will be triggered and clamp the output current to approximately 550mA to prevent over-current and
to protect the regulator from damage due to overheating.
Thermal Shutdown
When the die temperature exceeds the Thermal Shutdown point (TSD =160°
C typically) the device
goes to disabled state and the output voltage is not delivered until the die temperature decreases to
150°
C. The Thermal Shutdown feature provides a protection from a catastrophic device failure at
accidental overheating. This protection is not intended to be used as a substitute for proper heat
sinking.
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.
FN1620-29.1 — Data Sheet
300mA, Low Dropout, Ultra-Low IQ Linear Regulators
P-5
LTP3636
Power Dissipation and Heat sinking
The maximum power dissipation supported by the device is dependent upon board design and layout.
Mounting pad configuration on the PCB, the board material and the ambient temperature affect the rate of
junction temperature rise for the part. The maximum power dissipation the LTP3636 device can handle is
given by:
PD(MAX) =
TJ(MAX) - TA
PθJA
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.
(eq.1)
FN1620-29.1 — Data Sheet
300mA, Low Dropout, Ultra-Low IQ Linear Regulators
LTP3636
P-6
PACKAGE OUTLINE
SOT23-3L
D
d
θ
E
L
E1
e
e1
A1
c
A
Unit:mm
Symbol
A
A1
b
c
D
E
E1
e
e1
L
θ
Dimensions In Millimeters
MIN
MAX
1.050
1.250
0.000
0.300
0.100
0.400
0.100
2.820
2.600
0.200
3.020
3.000
1.500
1.700
0.950BSC
1.800
2.000
0.300
0°
0.600
8°
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.
FN1620-29.1 — Data Sheet
300mA, Low Dropout, Ultra-Low IQ Linear Regulators
LTP3636
P-7
PACKAGE OUTLINE
SOT23-5L
D
d
θ
E
L
E1
e
e1
A1
c
A
Unit:mm
Symbol
A
A1
b
c
D
E
E1
e
e1
L
θ
Dimensions In Millimeters
MIN
MAX
1.050
1.250
0.000
0.350
0.100
0.500
0.080
2.820
2.600
0.200
3.020
3.000
1.600
1.700
0.950BSC
1.800
2.000
0.300
0°
0.600
8°
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.
FN1620-29.1 — Data Sheet
300mA, Low Dropout, Ultra-Low IQ Linear Regulators
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