Side-Power 8981 Uživatelský manuál

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Advanced Power
Electronics Corp. APE8981
3A ULTRA LOW DROPOUT LINEAR REGULATOR
FEATURES DESCRIPTION
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
Data and specifications subject to change without notice
201204032
TYPICAL APPLICATION
1
The APE8981 series is a 3A ultra low dropout linea
r
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 powe
r
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 othe
r
converter for power sequence.
The APE8981 series can be enabled by other powe
r
system. Pulling and holding the EN pin below 0.4V shuts of
f
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.
POK
EN
VIN
VCNTL NC
VOUT
FB
GND
APE8981
U1
1uF
C2
4.7uF
C1
10k
R3
20k
R1
10k
R2
10uF
Cout
POK
EN
*option
CF
V
OUT
V
IN
V
CNTL
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Shrnutí obsahu

Strany 1 - Advanced Power

Advanced Power Electronics Corp. APE89813A ULTRA LOW DROPOUT LINEAR REGULATORFEATURES DESCRIPTION Ultra Low Dropout 0.21V(ty

Strany 2

Package Outline : ESOP-8MillimetersSYMBOLSMIN NOM MAXE 5.70 6.00 6.30D 4.70 4.95 5.20E1 3.70 3.95 4.20θ 0° 4° 8°L 0.30 0.80 1.30c 0.10 0.20 0.30A1

Strany 3

Package Outline : DFN 3x3-10LMillimetersMIN NOM MAXA0.70 0.85 1.00A10.00 0.03 0.05b 0.18 0.24 0.30C0.195 0.203 0.211D 2.90 3.00 3.10D11.55 1.62 1.

Strany 4

Advanced Power Electronics Corp. APE8981ABSOLUTE MAXIMUM RATINGS (Note1)CNTL Supply Voltage (VCNTL) --------------------------- -

Strany 5

Advanced Power Electronics Corp. APE8981ELECTRICAL SPECIFICATIONSVCNTL= 5V, VIN=1.8V, VOUT=1.2V, TA=25oC unless otherwise specifiedP

Strany 6

Advanced Power Electronics Corp. APE8981PIN DESCRIPTIONSPIN SYMBOL PIN DESCRIPTIONPOKPower OK Output PinInternal Pull High (APE8981M

Strany 7

Advanced Power Electronics Corp. APE8981PIN DESCRIPTION FB VIN VCNTL POK EN VOUTFUNCTION D

Strany 8

Advanced Power Electronics Corp. APE8981FUNCTION DESCRIPTION Current-Limit Thermal ShutdownAPPLICATION INFORMATION

Strany 9

Advanced Power Electronics Corp. APE8981TYPICAL PERFORMANCE CHARACTERISTICSLine RegulationDropout Voltage at VCNTL=5V Dropout Voltag

Strany 10 - Package Outline : ESOP-8

Advanced Power Electronics Corp. APE8981TYPICAL PERFORMANCE CHARACTERISTICSVENVINVOUTVOUTPOK POKIOUT=3A IOUT=3A8EN on with POK Delay

Strany 11 - BOTTOM VIEW

Advanced Power Electronics Corp. APE8981MARKING INFORMATIONESOP-8DFN 3x3-10L9Part NumberDate Code (YWWSSS) Y:Last Digit Of

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