APE8981_16 Datasheet, PDF (1/9 Pages) Advanced Power Electronics Corp. – 3A ULTRA LOW DROPOUT LINEAR REGULATOR

Advanced Power
Electronics Corp.
APE8981
3A ULTRA LOW DROPOUT LINEAR REGULATOR
FEATURES
Ultra Low Dropout 0.21V(typical) @ 2A Output
Current for 1.2V Output Voltage
Low ESR Output Capacitor (Multi-layer Chip
Capacitors (MLCC)) Applicable
EN Pull-low for APE8981MP-A
EN Pull-high for APE8981MP-B
Fast Transient Response
Adjustable Output Voltage by External Resistors
Power-On-Reset Monitoring on Both VCNTL
and VIN Pins
Internal Soft-Start
Current-Limit and Thermal Shutdown Protection
Power-OK Output with a Delay Time
SO-8 with Exposed Pad Pb-Free &
DFN 3x3-10L Package.
Halogen Free Product
DESCRIPTION
The APE8981 series is a 3A ultra low dropout linear
regulator. This product is specifically designed to provide
well supply voltage for front-side-bus termination on
motherboards and NB applications. The IC needs two
supply voltages, a control voltage for the circuitry and a
main supply voltage for power conversion, to reduce power
dissipation and provide extremely low dropout. The
APE8981 series integrates many functions. A Power-On-
Reset (POR) circuit monitors both supply voltages to
prevent wrong operations. A thermal shutdown and current
limit functions protect the device against thermal and
current over-loads. A POK indicates the output status with
time delay which is set internally. It can control other
converter for power sequence.
The APE8981 series can be enabled by other power
system. Pulling and holding the EN pin below 0.4V shuts off
the output.
The APE8981 series is available in DFN 3x3-10L &
ESOP-8 package which features small size as SO-8 and an
Exposed Pad to reduce the junction-to-case resistance.
TYPICAL APPLICATION
.
V_CNTL
R3
10k
EN
POK
U1
POK
EN
GND
FB
V_IN
VIN
VOUT
VCNTL
NC
C1
4 .7 uF
C2
1 uF
APE8981
V_OUT
R1
CF
20k _*option
Cout
10uF
R2
10k
Data and specifications subject to change without notice
1
201301046