APL5537
Dual Channel 300mA Low Dropout Linear Regulator
Features
•
•
•
•
•
•
•
•
•
•
•
Dual Regulator Outputs
Low Dropout Voltage: Typical 240mV at 300mA
Wide Input Voltage Range: 2.5V to 5.5V
Low Quiescent Current: Typical 58µA
High PSRR: 70dB at 1kHz
Low Shutdown Current: <1µA
Shutdown Function
Output Current-Limit Protection
Short-Circuit Current-Limit Protection
Over-Temperature Protection
Lead Free and Green Devices Available
(RoHS Compliant)
General Description
The APL5537 is a dual channel low dropout linear
regulator, which operates from 2.5V to 5.5V input voltage
and delivers up to 300mA output current at each channel.
Typical dropout voltage is only 240mV at 300mA.
The APL5537 with low quiescent current, high PSRR, and
low noise is ideal for battery powered system appliances.
Other features include logic-controlled shutdown mode,
over-temperature protection, short-circuit current-limit, and
current-limit protection to ensure specified output current.
The APL5537 is available in the TSOT-23-6A and TDFN
1.6x1.6-6 packages.
Pin Configurations
VOUT2 1
GND 2
EN2 3
6 VOUT1
5 VIN
4 EN1
Applications
•
•
•
Mobile Phone
GPS Navigation
Blue Tooth Headset
VIN 1
EN1 2
EN2 3
EP
6 VOUT1
5 VOUT2
4 GND
TSOT-23-6A
(Top View)
TDFN1.6x1.6-6
(Top View)
Ordering and Marking Information
APL5537
Assembly Material
Handling Code
Temperature Range
Package Code
Voltage Code
Voltage Code
See Voltage Code Table
Package Code
CT : TSOT-23-6A
QB : TDFN1.6x1.6-6
Operating Ambient Temperature Range
I : -40 to 85
o
C
Handling Code
TR : Tape & Reel
Assembly Material
G : Halogen and Lead Free Device
APL5537-VVCT:
APL5537-VVQB:
7VVX
7VV
X
VV - Voltage Code
X - Date Code
VV - Voltage Code
X - Date Code
Note : ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which
are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020D for
MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant)and halogen
free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by
weight).
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.
Copyright
©
ANPEC Electronics Corp.
Rev. A.5 - Oct., 2009
1
www.anpec.com.tw
APL5537
Voltage Code Table
Output Voltage
V
OUT1
(V)
1.30
1.85
1.50
1.80
2.50
2.50
2.80
2.85
2.80
2.80
2.80
3.30
3.30
3.15
V
OUT2
(V)
2.80
1.85
1.50
1.20
1.80
3.00
2.85
2.85
1.80
3.30
3.00
2.85
3.30
2.80
7M
bb
99
C5
JC
JO
Ud
dd
MC
MR
MO
Rd
RR
eM
Voltage Code
1.20
1.85
1.50
1.80
1.80
2.50
2.50
2.85
2.85
2.80
3.00
3.00
3.30
3.30
Output Voltage
V
OUT1
(V)
V
OUT2
(V)
2.80
1.50
2.80
2.60
3.30
2.80
3.30
1.85
1.80
2.80
1.80
3.00
3.00
3.10
5M
b9
9M
CK
CR
JM
JR
db
dC
MM
OC
OO
RO
RP
Voltage Code
Available Voltage Version
Code
Voltage
Code
Voltage
5
1.20
c
2.65
7
1.30
L
2.70
9
1.50
M
2.80
A
1.60
d
2.85
C
1.80
N
2.90
b
1.85
O
3.00
D
1.90
P
3.10
E
2.00
e
3.15
F
2.10
Q
3.20
J
2.50
R
3.30
K
2.60
Absolute Maximum Ratings
Symbol
V
IN
V
EN1
, V
EN2
T
J
T
STG
T
SDR
VIN Input Voltage (VIN to GND)
EN1, EN2 to GND Voltage
Maximum Junction Temperature
Storage Temperature
(Note 1)
Rating
-0.3 ~ 7
-0.3 ~ 7
150
-65 ~ 150
260
Unit
V
V
o
Parameter
C
C
C
o
o
Maximum Lead Soldering Temperature, 10 Seconds
Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Thermal Characteristics
Symbol
θ
JA
Parameter
Junction-to-Ambient Resistance in Free Air
(Note 2)
TSOT-23-6A
TDFN1.6x1.6-6
220
165
o
Typical Value
Unit
C/W
Note 2:
θ
JA
is measured with the component mounted on a high effective thermal conductivity test board in free air.
Copyright
©
ANPEC Electronics Corp.
Rev. A.5 - Oct., 2009
2
www.anpec.com.tw
APL5537
Recommended Operating Conditions
Symbol
V
IN
V
EN1
, V
EN2
I
OUT
T
A
T
J
VIN Input Voltage (VIN to GND)
EN1, EN2 to GND Voltage
VOUT Output Current
Ambient Temperature
Junction Temperature
Parameter
(Note 3)
Range
2.5 ~ 5.5
0 ~ 5.5
0 ~ 300
-40 ~ 85
-40 ~ 125
Unit
V
V
mA
o
o
C
C
Note 3: Refer to the typical application circuit
Electrical Characteristics
Unless otherwise specified, these specifications apply over V
IN
=V
OUT
+1V, V
EN1
= V
EN2
=5V and T
A
= -40 to 85
o
C. Typical values are
at T
A
=25
o
C.
Symbol
Parameter
Test Conditions
Min.
UNDER-VOLTAGE LOCKOUT (UVLO) AND SUPPLY CURRENT
VIN UVLO Threshold Voltage
VIN UVLO Hysteresis
I
Q
VIN Supply Current
No load, V
EN1
= V
EN2
=5V
No load, V
EN1
= V
EN2
=0V
I
OUT
=1mA, T
A
= 25
o
C
I
OUT
=1mA to 300mA, T
A
= -40
o
C to 85
o
C
I
OUT
=1mA, V
IN
=V
OUT
+0.3V to 5.5V, or
V
IN
=2.5V to 5.5V
I
OUT
=1mA to 300mA
(Note 4)
APL5537
Typ.
Max.
Unit
V
IN
rising, T
A
= -40 to 85
o
C
1.9
-
-
-
2.2
0.1
58
-
2.45
-
90
1
V
V
µA
µA
OUTPUT VOLTAGE (REGULATOR1 AND REGULATOR2)
Output Voltage Accuracy
Line Regulation
Load Regulation
V
DROP
Dropout Voltage
-1
-3
-
-
-
f=100Hz
PSRR
Power Supply Rejection Ratio
f=1kHz
I
OUT
=50mA, C
OUT
=2.2µF
f=10kHz
f=100kHz
Output Noise
VOUT Discharge Resistance
ENABLE/DISABLE (EN1 AND EN2)
V
IH
V
IL
EN Input Logic HIGH
EN Input Logic LOW
EN Input Current
V
IN
=2.5V to 5.5V
V
IN
=2.5V to 5.5V
V
EN1
= V
EN2
=5V
1.5
-
-
-
-
0.2
-
0.4
-
V
V
µA
I
OUT
=1mA, BW=10 to 100kHz, C
OUT
=10µF
V
EN1
= V
EN2
=0V
-
-
-
-
-
-
-
-
-
-
240
70
70
60
35
100
0.7
+1
+3
0.2
0.6
330
-
-
-
-
-
-
µV
RMS
kΩ
dB
%
%
%/V
%
mV
I
OUT
=300mA
PROTECTIONS (REGULATOR1 AND REGULATOR2)
I
LIMIT
I
SHORT
Current Limit Threshold
Short-Circuit Output Current
Over-Temperature Threshold
Over-Temperature Hysteresis
Soft-Start Time
330
-
-
-
-
450
50
160
40
60
750
-
-
-
-
mA
mA
°C
°C
µs
Note 4: The dropout voltage is defined as V
IN
- V
OUT
, when V
OUT
is 100mV below the value of V
OUT
for V
IN
= V
OUT
+ 1V.
Copyright
©
ANPEC Electronics Corp.
Rev. A.5 - Oct., 2009
3
www.anpec.com.tw
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