PL0300
Low Noise, Fixed Output Voltage
300mA LDO Regulator
FEATURES
DESCRIPTION
Guaranteed 300mA output
Ultra low output noise
Output voltage accuracy: ±2%
Low ground current: 90µA
Very low dropout: 380mV @ 300mA
Zero shutdown supply current
TTL-logic-controlled enable input
Thermal and current limit protections
Compatible with low ESR capacitor to
achieve ultra low droop load transient
response
Ultra fast line transient response
Low profile 5-lead SOT-25 package
Fixed options from 1.5V to 5.0V with
100mV steps
Cellular and cordless phones
PDAs
Battery powered portable equipment
Notebook computers
PC peripherals
Wireless LAN cards
Bluetooth devices
The PL0300/P is a CMOS low dropout linear
regulator with ultra-low-noise output, very low
dropout voltage and very low ground current.
The PL0300/P operates from a 2.5V to 5.5V input
voltage range and delivers up to 300mA, with low
dropout of 380mV at 300mA. Other features of the
PL0300/P include short-circuit protection and
thermal-shutdown protection.
The PL0300/P is designed especially for battery-
powered portable devices. Its reference bypass pin
improves low noise performance which makes it
ideal for noise-sensitive RF and personal
communication applications. Other key application
areas for the PL0300/P include handheld
computers, PCMCIA cards and WLAN cards.
The PL0300/P is available in small 5-lead SOT-25
package.
APPLICATIONS
TYPICAL APPLICATION CIRCUIT
July 2007
www.picsemi.com
© 2007 Power IC. All Rights Reserved.
1
PL0300
PIN CONFIGURATION
PIN DESIGNATOR
Name
IN
GND
EN
BYP/ PGD
OUT
Pin
1
2
3
4
5
Type
Supply
Ground
Logic input
Bypass/PGood
Analog output
Function
Supply voltage. 2.5V ~ 5.5V
Ground pin
Enable/Shutdown. TTL and CMOS compatible input. Logic ‘H’: enable,
logic ‘L’: shutdown
Reference voltage bypass pin. Connect 0.01µF
≤
C
BYP
≤
0.1µF to GND to
reduce output noise. May be left open
Regulator output
PIN DESCRIPTION
PL0300
Name
IN
GND
EN
BYP
OUT
Pin
1
2
3
4
5
Type
Supply
Ground
Logic input
Bypass
Analog output
Function
Supply voltage. 2.5 ~ 5.5V
Ground
TTL and CMOS compatible input. Logic ‘H’: enable, logic ‘L’: shutdown
Noise filtering pin
Regulator output
PL0300P
Name
IN
GND
EN
PGD
OUT
Pin
1
2
3
4
5
Type
Supply
Ground
Logic input
Power good
Analog output
Function
Supply voltage. 2.5 ~ 5.5V
Ground
TTL and CMOS compatible input. Logic ‘H’: enable, logic ‘L’: shutdown
Monitors the output voltage and signals an error condition when the output
voltage drops 10% below its nominal value
Regulator output
July 2007
www.picsemi.com
© 2007 Power IC. All Rights Reserved.
2
PL0300
BLOCK DIAGRAM
July 2007
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© 2007 Power IC. All Rights Reserved.
3
PL0300
ABSOLUTE MAXIMUM RATINGS
Symbol
V
IN
V
EN
P
D
T
STG
R
θJA
T
J,MAX
T
L
ESD
Parameter
DC Supply Voltage at Pin 1
Enable Input Voltage at Pin 3
Continuous Power Dissipation
Storage Temperature Range
Thermal Resistance, Junction-To-Air
Operating Junction Temperature
Lead Temperature (Soldering, 5sec)
ESD Capability, HBM Model
Value
-0.3 to +6.0
-0.3 to +6.0
Internally limited
-65 to +150
+235
-40 to +125
+260
2.0
Unit
V
V
W
°C
°C/W
°C
°C
KV
ELECTRICAL CHARACTERISTICS
( All specifications are at T
A
= 25°C. V
IN
= V
OUT ( NOMINAL )
+ 1V OR 2.5V whichever is greater, V
EN
= V
IN,
C
IN
=
C
OUT
= 1µF, unless otherwise specified.)
Symbol
V
IN
V
OUT
V
DP
I
MAX
I
LIM
I
Q
I
G
ΔV
LINE
PSRR
e
NO
Parameter
Supply Voltage
Output Voltage Accuracy
Dropout Voltage (Note 1)
Maximum Output Current
Short Circuit Current Limit
Shutdown Quiescent Current
Ground Pin Current
Line Regulation dV
OUT
/dV
IN
Ripple Rejection
Output Voltage Noise
I
O
= 1mA to 300mA,
T
A
= +25°C
I
O
= 1mA to 300mA,
T
A
= -40°C to 85°C
I
LOAD
= 300mA
I
LOAD
= 100mA
Continuous
V
OUT
< 90% of V
NOM
V
EN
< 0.4V
Test Conditions
Min
2.5
-2.0
-3.0
380
130
300
650
0.05
90
0.5
140
0.15
65
Typ
Max
5.5
+2.0
+3.0
Unit
V
%
%
mV
mV
mA
RMS
mA
µA
µA
%/V
dB
I
LOAD
= 1mA
V
IN
= V
OUT
+ 1V (or 2.5V,
whichever is greater) to 5.5V, -0.15
I
O
= 1 mA
f = 100Hz, C
OUT
= 10µF,
C
BYP
= 10nF,
I
LOAD
= 1mA
C
OUT
= 10µF, C
BYP
= 10nF,
f = 10Hz to 100KHz
70
µV
RMS
July 2007
www.picsemi.com
© 2007 Power IC. All Rights Reserved.
4
PL0300
OVER TEMPERATURE PROTECTION
Symbol
Parameter
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
Test Conditions
Min
Typ
165
15
Max
Unit
°C
°C
ENABLE INPUT
Symbol
V
IH
V
IL
I
EN
Parameter
Logic Input High Voltage
Logic Input Low Voltage
Logic Input Current
Shutdown Exit Delay
Shutdown Discharge Resistance
Test Conditions
Min
1.6
-0.5
V
EN
= 0 to 5.5V, C
BYP
=
10nF, C
OUT
= 1µF
25
900
Typ
Max
0.4
0.5
Unit
V
V
µA
µS
Ω
Note 1:
The Dropout Voltage is defined as V
IN
- V
OUT
, when V
IN
= V
OUT ( NOM )
July 2007
www.picsemi.com
© 2007 Power IC. All Rights Reserved.
5
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