ap2202k-adjtre1 BCD Semiconductor Manufacturing Limited, ap2202k-adjtre1 Datasheet - Page 24

• Manufacturer Part Number: ap2202k-adjtre1
• Description: 150ma Rf Uldo Regulator
• Manufacturer: BCD Semiconductor Manufacturing Limited

Application Information
Input Capacitor
A 1
placed between V
Output Capacitor
It is required to prevent oscillation. 1.0
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 AP2202 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.
Jul. 2007 Rev. 1. 9
150mA RF ULDO REGULATOR
BYP
µ
F minimum capacitor is recommended to be
and leave BYP open.
IN
and GND.
BYP
is unused. 2.2
BYP
is 100pF. The out-
µ
F minimum
µ
F mini-
24
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
age and 165
required since the package alone will dissipate
enough heat to satisfy these requirements unless the
calculated value for power dissipation exceeds the
limit.
Example: For 2.8V version packaged in SOT-23-5,
I
(150
Therefore, for good performance, please make sure
that input voltage is less than 6.133V without heat-
sink when T
OUT
D
J
J(max)
= P
=(V
o
=150mA, T
C
D
IN
-50
is 150
*
BCD Semiconductor Manufacturing Limited
θ
-V
J
JA
≤
o
C
T
OUT
o
A
)/(0.15A*200
+ T
C
J(max)
=50
o
/W for SOT-89 package, no heatsink is
C
)*I
,
A
A
θ
o
=50
C.
OUT
,
JA
T
J(max)
is 200
o
+V
C, V
IN
o
C/W
o
is absolute maximum rat-
IN(Max)
*I
C
/W for SOT-23-5 pack-
GND
)+2.8V=6.133V
is:
IN
*I
Data Sheet
GND
AP2202
can be