APL3227E Datasheet, PDF (1/16 Pages) Anpec Electronics Coropration – High-Current Overvoltage Protectors with Adjustable OVLO

APL3227E
High-Current Overvoltage Protectors with Adjustable OVLO
Features
• Wide supply voltage range from 3.8V to 28V
• Low ON resistance: 50mΩ(Max) at a supply voltage
of 5V
• Flexible overvoltage-protection trip level
-Wide adjustable OVLO threshold range from 4V
to 20V
-Preset internal accurate OVLO threshold
• Low quiescent current 70µA
• Internal 8ms startup debounce
• Protection circuitry:
-Surge Immunity to 100V
-Overvoltage lockout
• Low Capacitance ESD Protection
• Available in WLCSP1.82x1.22-12 Packages
• Lead Free Green Devices Available (RoHS
Compliant)
General Description
The APL3227E overvoltage protection devices feature a
low 50mΩ (max) RON internal FET and protect low-volt-
age systems against voltage faults up to +28VDC. An
internal clamp also protects the devices from surge up to
+120V. When the input voltage exceeds the overvoltage
threshold, the internal FET is turned off to prevent dam-
age to the protected downstream components.
The overvoltage protection threshold can be adjusted with
optional external resistors to any voltage between 4V and
20V. With the OVLO input set below the external OVLO
select voltage, the APL3227E automatically choose the
accurate internal trip thresholds. The internal overvoltage
thresholds (OVLO) are preset to 13.32V typical. The de-
vices feature an open-drain ACOK output indicating a
stable supply between minimum supply voltage and
VOVLO. The APL3227E are also protected against over
current events by an internal thermal shutdown.
Applications
• Smart Phones and PDAs
• Digital Still Cameras
• Portable Devices
Pin Configuration
Top View
EN
OUT
OUT
GND
(A1)
(A2)
(A3)
(A4)
ACOK
OUT
IN
GND
(B1)
(B2)
(B3)
(B4)
Simplified Application Circuit
POWER
ADAPTER
1µF
R1
R2
IN
OUT
IN
OUT
IN
OUT
1µF
OVLO ^APL3227E
VI/O
EN
ACOK
GND
OVLO
IN
IN
GND
(C1)
(C2)
(C3)
(C4)
WLCSP1.82x1.22-12
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.
1
Rev. A.1 - Mar., 2017
www.anpec.com.tw