APL3538
Preliminary
Ultra-Low On-Resistance, 6A Dual Load Switch with Soft Start
Features
•
Ultra-Low On-Resistance
-APL3538A/B: 20mΩ (Max.)
-APL3538C/D: 35mΩ (Max.)
Gereral Description
The APL3538 is an ultra-low On-resistance, dual power-
distribution switch with external soft start control. It inte-
grates two N-channel MOSFETs that can deliver 6A con-
tinuous load current each. The APL3538 can be enabled
by other power systems. Pulling and holding the voltage
of EN pin (APL3538A) below 0.4V shuts off the output.
Pulling and holding the voltage of ENB pin (APL3538B)
below 0.4V enable the output. The device integrates some
protection features, including Over-Current Protection
(OCP) and Over-Temperature Protection (OTP). The OCP
can protect the device against current over-loads or short-
circuit events. The OTP function shuts down the N-chan-
nel MOSFET power switch when the junction tempera-
ture rises beyond 150°C and will automatically turns on
the power switch when the temperature drops by 30°C.
The device is available in lead free TQFN2x2-14 package.
•
•
•
•
•
•
•
•
•
•
•
Low Quiescent Current: 30µA(max)
Soft Start Time Programmable by External
Capacitor
Wide Input Voltage Range (VIN): 0.8V to 5.5V
Supply Voltage Range (VDD): 3V to 5.5V
Over-Current Protection (OCP)
Enable Control Function
Output Discharge when Switch Disabled
Reverse Current Blocking when Switch Disabled
Over-Temperature Protection with Hysteresis
Tiny small TQFN2x2-14 Package
Lead Free and Green Devices Available
(RoHS Compliant)
Applications
•
•
•
Notebooks
Tablet PC
AIO PC
Simplified Application Circuit
V
DD
VDD
V
IN1
VIN1
VOUT1
V
OUT 1
V
IN2
APL3538A/BC/D
VIN2
V
OUT 2
VOUT2
EN1/ENB1
EN2/ENB2
SS1
GND
SS2
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. P.1 - Sep., 2015
1
www.anpec.com.tw
APL3538
Pin Configurations
11 VOUT1
Preliminary
11 VOUT1
8 VOUT2
VOUT1 12
EN1 13
VIN1 14
7 VOUT2 VOUT1 12
8 VOUT2
10 SS1
10 SS1
9 SS2
9 SS2
7 VOUT2
APL3538A/C
TQFN 2x2-14
(Top View)
6 EN2
5 VIN2
ENB1 13
VIN1 14
APL3538B/D
TQFN 2x2-14
(Top View)
6 ENB2
5 VIN2
VIN1 1
GND 2
VDD 3
VIN2 4
VIN1 1
GND 2
VDD 3
Copyright
©
ANPEC Electronics Corp.
Rev. P.1 - Sep., 2015
VIN2 4
2
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APL3538
Preliminary
Ordering and Marking Information
APL3538
Product Code (Enable Function / R
DS(ON )
)
A : Active High / 16mΩ (Typ.)
B : Active Low / 16mΩ (Typ.)
C : Active High / 25mΩ (Typ.)
D : Active Low / 25mΩ (Typ.)
Package Code
QB : TQFN2x2-14
Operating Ambient Temperature Range
I : -40 to 85
O
C
Handling Code
TR : Tape & Reel
Assembly Material
G : Halogen and Lead Free Device
APL3538A QB:
L38A
X
L38B
X
L38C
X
L38D
X
X - Date Code
Assembly Material
Handling Code
Temperature Range
Package Code
Product Code
APL3538B QB:
X - Date Code
APL3538C QB:
X - Date Code
APL3538D QB:
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 w-
eight).
Absolute Maximum Ratings
Sym b o l
V
DD
V
IN x
V
OU T x
V
D Sx
V
EN x
V
ENB x
I
OUT x
T
J
T
ST G
T
SD R
V DD to GN D Vo ltage
V IN x to G N D Voltage
V OU T x to G ND Vo ltage
V IN x to V O UT x Voltage
E Nx to G N D Voltage
E NBx to G N D Vo lta ge
C o nti nuo us O utp ut Cur rent, IO UT x
M axim um J unc tion Tem perature
Sto rage Temperature
(Note 1)
Rat in g
-0.3 ~ 6
-0.3 ~ 6
> 10µ s ec puls e width
< 10µ s ec puls e width
< 100 n sec p ulse width
-0.3 ~ 6
-1.4 ~ 6
8
-0.3 ~ 6
-0.3 ~ 6
Inter nally Lim ited
-40 ~ 150
-65 ~ 150
260
Un it
V
V
V
V
V
V
V
A
o
o
o
Param ete r
C
C
C
M axim um Le ad So ld eri ng Temperature (10 Seco nds)
Note1: Stresses beyond those listed under
“absolute
maximum ratings” may cause permanent damage to the device. These are s-
tress ratings only and functional operation of the device at these or any other conditions beyond those indicated under
”recomme-
nded operating conditions” is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device
reliability.
Copyright
©
ANPEC Electronics Corp.
Rev. P.1 - Sep, 2015
3
www.anpec.com.tw
APL3538
Thermal Characteristics
Symbol
θ
JA
Preliminary
Parameter
Junction-to-Ambient Thermal Resistance in free air
(Note 2)
Typical Value
TQFN2x2-14
70
Unit
o
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
DD
V
INx
I
OUTx
Maximum Pulse Current, Pulse<300µs, 1% Duty Cycle (Single Channel)
V
IHx
V
ILx
C
SSx
T
A
T
J
ENx/ENBx Logic High Input Voltage
ENx/ENBx Logic Low Input Voltage
SSx Capacitance
Ambient Temperature
Junction Temperature
8
1 ~ 5.5
0 ~ 0.4
0 ~ 10
-40 ~ 85
-40 ~ 125
A
V
V
nF
o
o
Parameter
VDD Input Voltage (V
DD
≥V
IN
)
VINx Input Voltage
VOUTx Output Current (Single Channel)
Range
3.0 ~ 5.5
0.8 ~ 5.5
0~6
Unit
V
V
A
C
C
Note 3 : Refer to the typical application circuit.
Electrical Characteristics
Unless otherwise specified, these specifications apply over V
INx
= 5V, V
DD
=5V, V
ENx
=5V (or V
ENBx
=0V) and T
A
=-40~85
o
C. Typical va-
lues are at T
A
=25
o
C.
S ymbol
SUPPLY CURRENT
VDD Sup ply Curr ent (b oth
cha nnels)
VDD Sup ply Curr ent (sing le
cha nnel)
VDD Sup ply Curr ent at
Shutdown
No load
No load
No load, V
DD
=5V, V
ENx
=0V
No load, V
DD
=5V, V
ENBx
=5V
No load, V
DD
=5V, V
INx
=5V, V
EN
=0V or V
ENB
=5V
No load, V
DD
=5V, V
INx
=3.3V, V
EN
=0V or
V
ENB
=5V
No load, V
DD
=5V, V
INx
=1.8V, V
ENx
=0V or
V
ENB
=5V
No load, V
DD
=5V, V
INx
=0.8V, V
ENx
=0V or
V
ENB
=5V
Reverse Lea ka ge Current (per
cha nnel)
UNDER-V OLTAGE LOCKOUT (UVLO)
Rising VDD UV LO Th reshold
VDD UVLO Hysteresis
V
DD
rising, T
J
=25 C
o
Param eter
Test Conditions
APL35 38A/B/C/D
Min.
Typ.
Max.
Unit
–
–
–
–
–
–
–
–
–
20
15
–
0.9
0.1
0.1
0.1
0.1
0.1
30
25
1
2
8
3
2
1
16
µA
µA
µA
µA
µA
µA
µA
µA
µA
VINx O ff-State Sup ply Curre nt
(p er ch anne l)
V
ENx
=0V or V
ENBx
=5V, V
OU Tx
=5.5V, V
IN x
=0V
2.0
–
2.3
0.1
2.6
–
V
V
Copyright
©
ANPEC Electronics Corp.
Rev. P.1 - Sep, 2015
4
www.anpec.com.tw
APL3538
Electrical Characteristics
Preliminary
Unless otherwise specified, these specifications apply over V
INx
= 5V, V
DD
=5V, V
ENx
=5V (or V
ENBx
=0V) and T
A
=-40~85
o
C. Typical
values are at T
A
=25
o
C.
APL3538A/B/C/D
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
POWER SWITCH 1 AND POWER SWITCH 2
Power Switch On Resistance
(APL3538A/B)
R
DS(ON)
Power Switch On Resistance
(APL3538C/D)
OVER CURRENT PROTECTION (OCP)
I
OCPx
OCP Threshold (per channel)
OCP Response Time
T
J
=25
o
C
T
J
=-40~125 C
VOUTx short to ground
o
V
DD
=5V, I
OUT x
=6A, T
J
=25
o
C
V
DD
=3.3V, I
O UTx
=6A, T
J
=25 C
V
DD
=5V, I
OUT x
=6A, T
J
=25
o
C
V
DD
=3.3V, I
O UTx
=6A, T
J
=25
o
C
o
–
–
–
–
16
20
25
31
20
24
35
42
mΩ
mΩ
mΩ
mΩ
9
8
–
–
–
12
–
–
15
A
A
µs
µs
kΩ
–
1
SOFT-START CONTROL PIN (SS1 AND SS2)
R
Lx
=10Ω, C
SSx
=0nF, V
INx
=1.05V
V
SSx
=6V, V
ENx
=Low or V
ENBx
=High, measured at
SSx Discharge Resistance
SSx
ENABLE INPUT PIN (EN1, EN2 OR ENB1, ENB2)
Input Logic HIGH
Input Logic Low
Input Current
t
D(ON)
t
D(OFF)
Turn On Delay Time
Turn Off Delay Time
Output Discharge Resistance
V
ENx
=5.5V or V
ENBx
=5.5V
C
SSx
=0nF, R
Lx
=10Ω, From being enabled to V
O UT
rising
C
SSx
=0nF, R
Lx
=10Ω
V
ENx
=0V or V
ENBx
=5V, V
OUTx
force 1V
t
R
Internal Soft-Start Time
12
14
–
–
1
–
–
–
–
–
–
–
–
–
–
7
5
100
–
0.4
1
–
–
150
–
–
V
V
µA
µs
µs
Ω
°C
°C
OVERT-TEMPERATURE PROTECTION (OTP)
T
O TPX
T
HYS
OTP Threshold (per channel)
OTP Hysteresis
T
J
rising
150
30
Copyright
©
ANPEC Electronics Corp.
Rev. P.1 - Sep, 2015
5
www.anpec.com.tw
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