APL3546
Power -Distribution Switches with Soft Start
Features
•
•
•
•
•
•
•
•
•
78mΩ High Side MOSFET
2.5A Continuous Current
Soft Start Time Programmable by External
Capacitor
Wide Supply Voltage Range: 4.5V to 24V
Current Limit and Short Circuit Protections
Under Voltage Lockout Protection
Over-temperature Protection
Logic Level Enable Input
Lead Free and Green Devices Available (RoHS
Compliant)
General Description
The APL3546 is a power-distribution switch with some
protection functions that can deliver current up to 2.5A.
The device incorporates a 78mΩ N-channel MOSFET
power switch that is controlled by an enable logic pin and
has a SS pin dedicated to soft start ramp-up rate control
that can be used in application where the inrush current
is concerned.
The device integrates some protection features, includ-
ing current limit protection, short circuit protection, over-
temperature protection and UVLO. The current limit and
short circuit protection can protect down-stream devices
from catastrophic failure by limiting the output current at
current limit threshold during over-load or short circuit
events. When VOUT drops below V
IN
-1V the devices limit
the current to a lower and safe level. The over-tempera-
ture protection function shuts down the N-channel
MOSFET power switch when the junction temperature
rises beyond 150
o
C and will automatically turns on the
power switch when the temperature drops by 20
o
C. The
UVLO function keeps the power switch in off state until
there is a valid input voltage present.
Applications
•
•
•
•
TFT LCD Modules
Notebook and Desktop Computers
USB Ports
High-side Power Protection Switches
Simplified Application Circuit
APL3546
VIN
VOUT
SS
EN
GND
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.3 - Jul., 2013
1
www.anpec.com.tw
APL3546
Pin Configuration
APL3546
VIN
SS
GND
NC
1
2
3
4
8
7
6
5
VOUT
VIN 1
NC
SS 2
EN
GND 3
NC
NC 4
APL3546
9
GND
8
7
6
5
VOUT
NC
EN
NC
APL3546
VIN
SS
GND
1
2
3
6
5
4
VOUT
NC
EN
SOP-8 Top
SOP-8P Top
TDFN2x2-6
(Top View)
Ordering and Marking Information
APL3546
Assembly Material
Handling
Code
Temperature Range
Package
Code
Package Code
QB : TDFN 2×
2-6
KA : SOP-8P
K : SOP-8
Operating Ambient Temperature Range
I : -40 to 85
o
C
Handling Code
TR : Tape & Reel
Assembly Material
G : Halogen and Lead Free Device
APL3546 K:
.
APL3546
XXXXX
X - Date Code
APL3546 QB:
.
L46
X
X - Date Code
APL3546 KA:
.
APL3546
XXXXX
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).
Absolute Maximum Ratings
(Note 1)
Symbol
V
IN
V
OUT
V
EN
V
SS
I
OUT
T
J
T
STG
T
SDR
VIN to GND Voltage
VOUT to GND Voltage
EN to GND Voltage
SS to GND Voltage
Continuous output current, IOUT
Maximum Junction Temperature
Storage Temperature
Maximum Lead Soldering Temperature (10 Seconds)
Parameter
Rating
-0.3 ~ 26
-0.3 ~ 26
-0.3 ~ 7
-0.3 ~ 7
Internally Limited
-40 ~ 150
-65 ~ 150
260
Unit
V
V
V
V
A
o
o
o
C
C
C
Note1: Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are
stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recom-
mended operating conditions" is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device
reliability.
Copyright
©
ANPEC Electronics Corp.
Rev. A.3 - Jul., 2013
2
www.anpec.com.tw
APL3546
Thermal Characteristics
(Note 2)
Symbol
θ
JA
Parameter
Junction-to-Ambient Resistance in Free Air
SOP-8
SOP-8P
TDFN2x2-6
130
75
130
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.
Recommended Operating Conditions
(Note 3)
Symbol
V
IN
I
OUT
T
A
T
J
VIN Input Voltage
VOUT Output Current
Ambient Temperature
Junction Temperature
Parameter
Range
4.5 ~ 24
0 ~2.5
-40 ~ 85
-40 ~ 125
Unit
V
A
o
o
C
C
Note 3: Refer to the typical application circuit
Electrical Characteristics
Unless otherwise specified, these specifications apply over V
IN
=12V, V
EN
=5V. Typical values are at T
A
=25
o
C.
APL3546
Min.
SUPPLY CURRENT
VIN Supply Current
Leakage Current
POWER SWITCH
R
DS(ON)
Power Switch On Resistance
I
OUT
=2A, T
A
= 25
o
C ,V
IN
=12V
I
OUT
=2A, V
IN
=12V
-
-
78
78
90
100
mΩ
mΩ
No load, V
EN
=0V
No load, V
EN
=5V
V
OUT
=GND , V
EN
=0V
-
-
-
30
250
-
50
400
1
µA
µA
µA
Typ.
Max.
Symbol
Parameter
Test Conditions
Unit
UNDER-VOLTAGE LOCKOUT
VIN UVLO Threshold Voltage
VIN UVLO Hysteresis
CURRENT LIMIT AND SHORT CIRCUIT PROTECTIONS
I
LIM
I
SHORT
Current Limit Threshold
Short Circuit Output Current
V
IN
=4.5V to 24V
V
IN
=4.5V to 24V
4
-
5
-
6
1.2
A
A
µA
ms
ms
Ω
V
IN
rising
3.3
-
-
0.2
3.9
-
V
V
SOFT-START CONTROL PIN
I
SS
t
SS
SS Current
Soft-Start Time
V
IN
=12V,
V
IN
=12V, No load, C
OUT
=1uF, C
SS
=1nF
V
IN
=12V, No load, C
OUT
=1uF, C
SS
=open
Soft-Star Discharge Resistance
V
EN
=0V
1
-
1
-
2
0.5
2
300
3
-
3
-
Copyright
©
ANPEC Electronics Corp.
Rev. A.3 - Jul., 2013
3
www.anpec.com.tw
APL3546
Electrical Characteristics(Cont.)
Unless otherwise specified, these specifications apply over V
IN
=12V, V
EN
=5V. Typical values are at T
A
=25
o
C.
Symbol
EN INPUT PIN
V
IH
V
IL
Parameter
Test Conditions
Min.
APL3546
Typ.
Max.
Unit
Input Logic High
Input Logic Low
Input Current
VOUT Discharge Resistance
V
IN
=4.5V to 24V
V
IN
=4.5V to 24V
2
-
-
-
-
-
950
300
3
-
0.6
1
-
-
-
V
V
µA
Ω
µs
µs
°C
°C
V
EN
=0V
-
-
-
t
D(ON)
t
D(OFF)
Turn on Delay Time
Turn off Delay Time
OVERT-TEMPERATURE PROTECTION (OTP)
T
OTP
Over-Temperature Threshold
Over-Temperature Hysteresis
T
J
rising
-
-
150
20
-
-
Pin Description
FUNCTION
NO.
SOP-8
1
2
3
4
5
6
7
8
SOP-8P
1
2
3,9
4
5
6
7
8
TDFN2x2-6
1
2
3
-
-
4
5
6
VIN
SS
GND
NC
NC
EN
NC
VOUT
Power Supply Input. Connect this pin to external DC supply.
Soft Start Control Pin. Connect a capacitor to GND to control the soft start rate. If
the SS pin is left floating the soft start time is 2ms when V
IN
=12V.
GND
No connection.
No connection.
Enable Input. Pull this pin to high to enable the device and pull this pin to low to
disable device. The EN pin cannot be left floating.
No connection.
Output Voltage Pin. The output voltage follows the input voltage. When EN is low
the output voltage is discharged by an internal resistor.
NAME
Copyright
©
ANPEC Electronics Corp.
Rev. A.3 - Jul., 2013
4
www.anpec.com.tw
APL3546
Typical Operating Characteristics
Current-Limit Response
vs. Output Peak Current
4
Current-Limit Response (µs)
V
IN
=12,
T
A
=25°C
3.5
3
2.5
2
4
5
6
7
8
9
Output Peak Current (A)
Copyright
©
ANPEC Electronics Corp.
Rev. A.3 - Jul., 2013
5
www.anpec.com.tw
京公网安备 11010802033920号
EEWORLD
