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PDF APL3547A Data sheet ( Hoja de datos )
| Número de pieza | APL3547A | |
| Descripción | Power-Distribution Switches | |
| Fabricantes | ANPEC | |
| Logotipo |  |
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APL3547A
Power-Distribution Switches with Soft Start
Features
General Description
• 84mΩ High Side MOSFET
• Soft Start Time Programmable by External
Capacitor
• Wide Supply Voltage Range: 4.5V to 24V
• Current Limit Protections
• Under Voltage Lockout Protection
• Over- temperature Protection
• Logic Level Enable Input
• Lead Free and Green Devices Available (RoHS
Compliant)
• Current Limit setting
Applications
• TFT LCD Modules
• Notebook and Desktop Computers
• USB Ports
• High-side Power Protection Switches
The APL3547A is a power-distribution switch with some
protection functions. The device incorporates a N chan-
nel 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 VIN-1V, the devices limit
the output current to a lower and safe level. The over-
temperature protection function shuts down the N-chan-
nel MOSFET power switch when the junction tempera-
ture rises beyond 150oC and will automatically turns on
the power switch when the temperature drops by 50oC.
The UVLO function keeps the power switch in off state
until there is a valid input voltage present. The current
limit in APL3547A can be set by connecting resistor from
the current limit adjustable pin ISET to ground.
The device is available in lead free SOP-8P and TDFN2x2-
6 packages.
Simplified Application Circuit
Pin Configuration
APL3547A
VIN VOUT
SS ISET
VIN 1
SS 2
GND 3
6 VOUT
5 ISET
4 EN
TDFN2x2-6
(Top View)
EN
GND
VIN 1
SS 2
GND 3
NC 4
8 VOUT
7 ISET
6 EN
5 NC
SOP-8P
(Top View)
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.6 - May., 2016
1
www.anpec.com.tw
1 page  
APL3547A
Pin Description
PIN
SOP-8P TDFN2x2-6
11
22
3, 9 3
4-
5-
64
75
86
NAME
Description
VIN Power Supply Input. Connect this pin to external DC supply.
SS Soft Start Control Pin. Connect a capacitor to GND to control the soft start rate.
GND GND.
NC No connection.
NC No connection.
EN
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.
ISET Connect a resistor to GND to adjust OCP level.
VOUT
Output Voltage Pin. The output voltage follows the input voltage. When EN is low the
output voltage is discharged by an internal resistor.
Copyright © ANPEC Electronics Corp.
Rev. A.6 - May., 2016
5
www.anpec.com.tw
5 Page 
APL3547A
Block Diagram
VIN
UVLO
Charge
Pump
ISET
Current
Limit
VOUT
Gate Driver and Control
Soft Start
SS
EN Logic
OTP
GND
Copyright © ANPEC Electronics Corp.
Rev. A.6 - May., 2016
11
www.anpec.com.tw
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet APL3547A.PDF ] | |
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