ap2213 BCD Semiconductor Manufacturing Limited, ap2213 Datasheet - Page 18

• Manufacturer Part Number: ap2213
• Description: 500ma Low Noise Ldo Regulator
• Manufacturer: BCD Semiconductor Manufacturing Limited

Application Information
Input Capacitor
A 1µF minimum capacitor is recommended to be
placed between V
Output Capacitor
It is required to prevent oscillation. 1µF minimum is
recommended when C
mum is recommended when C
put capacitor may be increased to improve transient
response.
Noise Bypass Capacitor
Bypass capacitor is connected to the internal voltage
reference. A 100pF capacitor connected from BYP to
GND make this reference quiet, resulting in a
significant reduction in output noise, but the ESR
stable area will be narrowed.
The start-up speed of the AP2213 is inversely
proportional to the value of reference bypass
capacitor. In some cases, if output noise is not a
major concern and rapid turn-on is necessary, omit
C
Power Dissipation
Thermal shutdown may take place if exceeding the
maximum power dissipation in application. Under all
possible operating conditions, the junction tempera-
ture must be within the range specified under abso-
lute maximum ratings to avoid thermal shutdown.
Mar. 2007 Rev. 1. 2
500mA LOW NOISE LDO REGULATOR
BYP
and leave BYP open.
IN
and GND.
BYP
is unused. 2.2µF mini-
BYP
is 100pF. The out-
18
To determine if the power dissipated in the regulator
reaches the maximum power dissipation (see figure
16, 17), using:
T
P
Where: T
ings for the junction temperature; V
ignored due to its small value.
T
package and 160
Example: For 2.5V version packaged in SOIC-8,
I
(150
Therefore, for good performance, please make sure
that input voltage is less than 3.75V without heatsink
when T
OUT
D
J
J(max)
= P
=(V
o
=500mA, T
C-50
D
IN
A
*θ
is 150
BCD Semiconductor Manufacturing Limited
=50
-V
J
≤T
JA
o
C)/(0.5A*160
OUT
o
+ T
J(max)
C.
o
C, θ
)*I
A
A
o
C/W for SOIC-8 package.
=50
OUT
, T
JA
J(max)
o
+V
C, V
is 90
o
IN
C/W)+2.5V=3.75V
is absolute maximum rat-
IN(Max)
*I
o
C/W for TO-252-2 (1)
GND
is:
IN
*I
Data Sheet
GND
AP2213
can be