Low I
Q
, Low Dropout 500mA Fixed Voltage Regulator
Copyright
ANPEC Electronics Corp.
Rev. B.2 - May., 2005
APL5501/2/3
www.anpec.com.tw
1
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Features
Design with an internal P-channel MOSFET pass
transistor, the APL5501/2/3 maintains a low supply
current, independent of the load current and dropout
voltage. Other features include reverse current
protection, thermal-shutdown protection, current limit
protection to ensure specified output current and con-
trolled short-circuit current. The APL5501/2/3 regu-
lator comes in a miniature SOT-23-5, SOT-89, SOT-
89-5, SOT-223, SO-8, TO-252 and TO-252-5
packages.
Applications
Notebook Computer
PDA or Portable Equipments
Noise-Sensitive Instrumentation Systems
Low Noise : 50
V
RMS
(100Hz to 100kHz)
Low Quiescent Current : 50
A (No load)
Low Dropout Voltage : 170mV (@500mA)
Very low Shutdown Current : < 0.5uA
Fixed Output Voltage : 1.3V ~ 3.4V
Stable with 4.7uF Output Capacitor
Stable with Aluminum, Tantalum or Ceramic
Capacitors
Reverse Current Protection
No Protection Diodes Needed
Built in Thermal Protection
Built in Current Limit Protection
Controlled Short Circuit Current : 150mA
Fast Transient Response
Short Setting Time
SOT-23-5, SOT-89, SOT-89-5, SOT-223, SO-8,
TO-252 and TO-252-5 Packages
Lead Free Available (RoHS Compliant)
Pin Configuration
SOT-89 (Top View)
V
IN
G N D
V
O U T
1
2
3
T A B i s G N D
SOT-89-5 (Top
View)
SO-8 (Top View)
TO-252-5 (Top View)
General Description
The APL5501/2/3 is micropower, low noise, low drop-
out linear regulator. Operate from 2.7V to 6V input
voltage and deliver up to 500mA. Typical output noise
is just 50
V
RMS
with the addition of an external 0.1
F
bypass capacitor in BP pin and typical dropout volt-
age is only 170mV at 500mA loading . Designed for
use in battery-powered system, the low 50uA quies-
cent current makes it an ideal choice.
TO-252 (Top View)
GND
1
2
3
V
OUT
V
IN
V
IN
GND
V
OUT
1
2
3
5
4
SHDN
BP
GND
BP
V
OUT
GND
V
IN
1
2
3
4
5
TAB is GND
SHDN
SOT-23-5 (Top View)
1
2
3
4
5
V
IN
GND
SHDN
BP
V
OUT
APL5501
1
2
3
4
5
6
7
8
IN
GND
GND
SHDN
BYP
GND
GND
OUT
Copyright
ANPEC Electronics Corp.
Rev. B.2 - May., 2005
APL5501/2/3
www.anpec.com.tw
2
Product Name
Marking
Product Name
Marking
Product Name
Marking
APL5501-13B
517X
APL5501-21B
51FX
APL5501-28B
51MX
APL5501-14B
518X
APL5501-22B
51GX
APL5501-29B
51NX
APL5501-15B
519X
APL5501-23B
51HX
APL5501-30B
51OX
APL5501-16B
51AX
APL5501-24B
51IX
APL5501-31B
51PX
APL5501-17B
51BX
APL5501-25B
51JX
APL5501-32B
51QX
APL5501-18B
51CX
APL5501-26B
51KX
APL5501-33B
51RX
APL5501-19B
51DX
APL5501-27B
51LX
APL5501-34B
51SX
APL5501-20B
51EX
P a c k a g e C o d e
B : S O T - 2 3 - 5 D : S O T - 8 9 D 5 : S O T - 8 9 - 5
U : T O - 2 5 2 U 5 : T O - 2 5 2 - 5 V : S O T - 2 2 3
K : S O - 8
T e m p . R a n g e
C : 0 t o 7 0 C
H a n d l i n g C o d e
T R : T a p e & R e e l
V o l t a g e C o d e :
1 3 : 1 . 3 V ~ 3 4 : 3 . 4 V
L e a d F r e e C o d e
L : L e a d F r e e D e v i c e B l a n k : O r i g i n a l D e v i c e
A P L 5 5 0 1 / 2 / 3 -
H a n d l i n g C o d e
T e m p . R a n g e
P a c k a g e C o d e
V o l t a g e C o d e
1 3
A P L 5 5 0 1 / 2 / 3
X X X X X
A P L 5 5 0 1 / 2 / 3 - 1 3 U :
X X X X X - D a t e C o d e , 1 3 - 1 . 3 V
X X X X X - D a t e C o d e , 1 3 - 1 . 3 V
A P L 5 5 0 1 / 2 / 3
X X X X X 1 3
A P L 5 5 0 1 / 2 / 3 - 1 3 D / V / K :
L e a d F r e e C o d e
Ordering and Marking Information
Pin Configuration (Cont.)
SOT-223 (Top View)
V
OUT
GND
V
IN
1
2
3
TAB is GND
APL5501
APL5502
SOT-89 (Top View)
GND
V
IN
V
OUT
1
2
3
TAB is V
IN
V
OUT
V
IN
GND
1
2
3
TAB is V
IN
SOT-223 (Top View)
APL5502
Marking Information
SOT-23-5 package
V
IN
GND
V
OUT
1
2
3
TAB is GND
SOT-223 (Top View)
APL5503
The last character "X" in the marking is for data code.
Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte in plate termina-
tion finish; which are fully compliant with RoHS and compatible with both SnPb and lead-free soldiering operations.
ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J STD-020C for MSL classifica-
tion at lead-free peak reflow temperature.
Copyright
ANPEC Electronics Corp.
Rev. B.2 - May., 2005
APL5501/2/3
www.anpec.com.tw
3
PIN
No.
Name
I/O
Description
1
V
IN
I
Supply voltage input.
3
SHDN
(Note1)
I
Shutdown control pin, low = off , high = normal. Don't leave
open.
2
GND
Ground pins of the circuitry, and all ground pins must be
soldered to PCB with proper power dissipation.
4
BP
(Note1)
O
Bypass signal pin in fixed output type device
5
V
OUT
O
Output pin of the regulator.
Absolute Maximum Ratings
Note1: These pins do not exist in 3-pin package.
Pin Description
Symbol
Parameter
Rating
Unit
V
IN
, V
OUT
Input Voltage or Out Voltage
6.5
V
SHDN
Shutdown Control Pin
6.5
V
R
TH,JA
Thermal Resistance - Junction to Ambient
SOT-89 : 180
SOT-223 : 135
SO-8 : 150
SOT-23-5 : 260
C/W
R
TH,JC
Thermal Resistance - Junction to Case
SOT-89 : 38
SOT-223 : 15
SO-8 :20
SOT-23-5 : 130
C/W
P
D
Power Dissipation
Internally Limited
W
T
J
Operating Junction Temperature
C
Control Section
0 to 125
Power Transistor
0 to 150
T
STG
Storage Temperature Range
-65 to +150
C
T
L
Lead Temperature (Soldering, 10 second)
260
C
Electrical Characteristics
Unless otherwise noted these specifications apply over full temperature, V
IN
=3.6V, C
IN
=1
F, C
OUT
=4.7
F,
SHDN=V
IN
, T
J
=0 to 125
C. Typical values refer to T
J
=25
C.
APL5501/2/3
Unit
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
V
IN
Input Voltage
2.7
6
V
V
OUT
Output Voltage
V
OUT
+1.0V< V
CC
<6.0V, 0mA< I
OUT
< I
MAX
V
OUT
-2
%
V
OUT
V
OUT
+2
%
V
Copyright
ANPEC Electronics Corp.
Rev. B.2 - May., 2005
APL5501/2/3
www.anpec.com.tw
4
Electrical Characteristics
Unless otherwise noted these specifications apply over full temperature, V
IN
=3.6V, C
IN
=1
F, C
OUT
=4.7
F,
SHDN=V
IN
, T
J
=0 to 125
C. Typical values refer to T
J
=25
C.
Symbol
APL5501/2/3
Unit
Parameter
Test Conditions
Min.
Typ.
Max.
I
LIMIT
Circuit Current Limit
V
IN
=4.3V
0.7
A
I
SHORT
Short Current
V
OUT
=0V
200
mA
I
OUT
Load Current
500
mA
REG
LINE
Line Regulation
V
OUT
+0.5V< V
CC
<6.0V, I
OUT
= 1mA
4
10
mV
REG
LOAD
Load Regulation
V
IN
=V
OUT
+1.0V, 0mA< I
OUT
< I
MAX
515X
1
0.1
6
mV
%
1.3V
V
OUT
<1.5V
1100
1300
mV
1.5V
V
OUT
<2V
900
1050
2V
V
OUT
<2.5V
500
700
V
DROP
Dropout Voltage
(Note2)
I
OUT
=500mA
2.5V
V
OUT
<3.4V
280
380
PSRR Ripple Rejection
F
1kHz, 1Vpp at V
IN
= V
OUT
+1.0V
C
=10nf
55
65
dB
No load
50
100
A
I
Q
Quiescent Current
I
OUT
=500mA
370
450
Shutdown Supply
Current
(Note3)
Shutdown = low
I
OUT
=0, V
CC
=6.0V
0.01
1
A
100Hz<f<100kHz, typical load,
C
BP
=0.01
F, C
OUT
= 1
F
50
Vrms
Noise
(Note3)
100Hz<f<100kHz, typical load,
C
BP
=0.1
F, C
OUT
= 1
F
40
C
BP
=0.01
F,C
OUT
=1
F, no load
7
ms
Shutdown Recovery
Delay
(Note3)
C
BP
=0.1
F,C
OUT
=1
F, no load
70
OTS
Over Temperature
Shutdown
150
C
Over Temperature
Shutdown Hysteresis
Hysteries
10
C
TC
Output Voltage
Temperature
Coefficient
50
ppm/
C
C
OUT
Output Capacitor
4.2
4.7
5.2
F
ESR
0.02
0.1
1
Ohm
Shutdown Input
Threshold
(Note3)
V
OUT
+1.0V< V
IN
<6.0V
0.4
0.7
1.6
V
I
SHDN
Shutdown input Bias
current
(Note3)
V
SHDN
=V
IN
0.01
100
nA
Input Reverse
Leakage current
V
OUT
-V
IN
=0.1V
0.1
0.5
A
Reverse Protection
Threshold
11
50
mV
Note 2 : Dropout voltage definition : V
IN
-V
OUT
when V
OUT
is 2% below the value of V
OUT
for V
IN
= V
OUT
+ 0.5V
Note 3 : For 5-pin devices only.
Copyright
ANPEC Electronics Corp.
Rev. B.2 - May., 2005
APL5501/2/3
www.anpec.com.tw
5
Application Circuit
BP
V
OUT
V
IN
GND
SHDN
VOUT
C
IN
1uF
off
on
APL5501/2/3
INPUT
2.7V to 6V
0.1uF
C
BP
C
OUT
4.7uF
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