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APW8871 Datasheet, PDF (5/27 Pages) Anpec Electronics Coropration – DDR4 TOTAL POWER SOLUTION (VPP/VDDQ/VTT) SYNCHRONOUS DC/DC CONVERTER for NB/MB
◁
APW8871
Recommended Operating Conditions
Symbol
L2
CVCC
CVDDQ
CVPP
CVTT
CVTTREF
TA
TJ
Parameter
VPP Output Inductor
VCC Capacitance
VDDQ Output Capacitance
VPP Output Capacitance
VTT Output Capacitance
VTTREF Output Capacitance
Ambient Temperature
Junction Temperature
Range
Unit
2.2 ~ 4.7
µH
1~
µF
100 ~
µF
10 ~
µF
10 ~
µF
0.22 ~ 2.2
µF
-40 ~ 85
oC
-40 ~ 125
oC
Electrical Characteristics
Ref er to the typical applic ation cir cuits . These s pecif ications apply over V =V =5V, V =19V and T = -40 ~ 85oC, unless
VCC BOO T
IN
A
otherw ise specified. Typical values are at T =25oC.
A
Symbol
Parameter
Test Conditions
APW8871
Unit
Min Typ Max
SUPPLY CURRENT
I VCC
VCC Supply Current
IVCCSTB VCC Standby Current
IVCCSDN VCC Shutdown C urrent
ILDOIN LDOIN Supply Current
ILDOINSTB LDOIN Standby Current
ILDOINSDN LDOIN Shutdown Current
POWER-ON-RESET
TA = 25oC, VS3 = V S5 = 5V, no load
TA = 25oC, VS3 = 0V, VS5 = 5V, no load
TA =25oC, V S3 = VS5 = 0V, no load
TA = 25oC, VS3 = V S5 = 5V, no load
TA = 25oC, VS3 = 0V, VS5 = 5V, no load,
TA = 25oC, VS3 = V S5 = 0V, no load
-
270 320 µA
-
245 295 µA
-
0.1
1
µA
0.3 0.6
1
mA
-
0.1
1
µA
-
0.1
1
µA
VCC POR Threshold
VCC POR Hysteresis
VCC Rising
4.1 4.3 4.45 V
-
100
-
mV
VTT OUTPUT
VVTT VTT Output Voltage
VVTT VTT Output Tolerance
VLDOIN = VVDDQ = 1.2V
VLDOIN = VVDDQ = 1.2V, V VDDQ/2 - VVTT,
IVTT = 0A
VLDOIN = VVDDQ = 1.2V, V VDDQ/2 - VVTT,
IVTT = 0.75A
-
0.6
-
V
-20
-
-30
-
20
mV
30
I LIM
Current-Limit
IVTTLK VTT Leakage Current
I VTTSNSLK
I VTTDIS
VTTSNS Leakage Current
VTT Discharge Current
Sourcing Current (VLDOIN =1.2V)
Sinking Current (VLDOIN =1.2V)
VVTT = 1.25V, VS3 = 0V, VS5 = 5V,
TA = 25oC
VVTT = 1.25V, TA = 25oC
VVTT = 0.5V, VS3 = VS5 = 0V,TA = 25oC
0.8
1
1.3
A
-0.8 -1 -1.3
-1.0
-
1.0
µA
-1.00 0.01 1.00 µA
-
5
-
mA
C opyright © ANPEC Electronics C orp.
5
Rev. A.1 - Sep., 2015
www.anpec.com.tw
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