300mA Low Power Low Noise
LDO CMOS Voltage Regulator
Electrical Characteristics (Continued)
V
IN
= 5V; C
IN
= 2.2μF; C
OUT
= 2.2μF; I
OUT
= 10mA; T
J
= 25°C; unless otherwise noted
SE5509
Symbol
Parameter
Output Voltage
Conditions
Min
Typ
Max
Unit
ΔV
OUT
/ΔT
Temperature
Coefficient
Dropout Voltage
(6)
(V
OUT
>3.0V)
Note 4
--
0.1
--
mV/°C
I
OUT
= 10mA
I
OUT
= 150mA
I
OUT
= 300mA
Thermal Protection Temperature
Protection Hysterisys
f =10kHz,I
OUT
=50mA,C
bypass
=0.1μF
V
EN
= 0.4V
V
EN
= V
IN
Voltage Raising, Output Turns On, Logic High
Voltage Falling, Output Turns Off, Logic Low
--
--
--
--
--
--
--
--
1.6
--
--
8
200
350
150
20
70
0.1
20
--
--
600
--
--
--
--
--
--
--
--
--
0.4
--
°C
dB
μA
mV
V
IN
– V
OUT
T
PROTECTION
PSRR
I
Q
Thermal Protection
Ripple Rejection
Quiescent Current
Enable Input
Threshold Voltage
Current Limit
V
TH(EN)
I
LIMIT
V
mA
Note 1:
Exceeding the absolute maximum rating may damage the device.
Note 2:
The device is not guaranteed to function outside its operating rating.
Note 3:
The maximum allowable power dissipation at any T
A
(ambient temperature) is calculated using: P
D(MAX)
=
(T
J(MAX)
– T
A
)/Θ
JA
. Exceeding the maximum allowable power dissipation will result in excessive die temperature,
and the regulator will go into thermal shutdown. See “Thermal Consideration” section for details
Note 4:
Output voltage temperature coefficient is the worst case voltage change divided by the total temperature range.
Note 5:
Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested
for load regulation in the load range from 0.1mA to 300mA. Changes in output voltage due to heating effects are
covered by the thermal regulation specification.
Note 6:
Dropout voltage is defined as the input to output differential at which the output voltage drops 100mV below its
nominal value measured at 0.8V differential.
Revision 12/5/2008
Preliminary and all contents are subject to change without prior notice
© Seaward Electronics Inc., 2006. • www.seawardinc.com.cn • Page 3
SEAWARD [ Seaward Electronics Inc. ]
