APW8871 Datasheet, PDF (8/27 Pages) Anpec Electronics Coropration – DDR4 TOTAL POWER SOLUTION (VPP/VDDQ/VTT) SYNCHRONOUS DC/DC CONVERTER for NB/MB

APW8871
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 ~ 85^oC, 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
LOGIC THRESHOLD
VIH
S3, S5 High Threshold Voltage S3, S5 Rising
VIL
I ILEAK
S3, S5 Low Threshold Voltage S3, S5 Falling
Logic Input Leakage Current VS3 = VS5 = 5V, TA =25^oC
THERMAL SHUTDOWN
TSD
Thermal Shutdown
Temperature
Thermal Shutdown Hysteresis
TJ Rising
1.6
-
-
-
-1
-
-
V
0.6
V
1
µA
-
150
-
o_C
-
40
-
o_C
Note4 : Guaranteed by design.
SMBus Serial Control Port Operation
Timing characteristics for SMBus Interface signals over recommended operating conditions (unless otherw ise noted)
Symbol
Parameter
Test Conditions
APW8871
Min.
Typ.
Max.
Input High Voltage Threshold
1.6
-
-
Input Low Voltage Threshold
-
-
0.9
f_SMC
Frequency, SMC
tHIGH
Pulse Duration, SMC High
tLOW
Pulse Duration, SMC Low
10
-
100
4
-
50
4.7
-
-
tR
Rise Time, SMC and SMD
-
-
1
tF
Fall Time, SMC and SM D
VCC=4.5V to 5.5V
-
-
300
tSU_DAT
tHD_DAT
tBUF
Data Setup Time
Data Hold Time
Bus Free Time Between Stop
and Start Condition
250
-
-
300
-
-
4.7
-
-
tSU_STA
Setup Time for Start Condition
4.7
-
-
tHD_STA
Start Condition Hold Time
after Which First Clock Pulse
Is Generated
4
-
-
tSU_STO
tTIMEOUT
Setup Time for Stop Condition
SMBus Bus Release Timeout
4
-
-
25
-
35
Unit
V
V
kHz
µs
µs
ns
ns
ns
µs
µs
ms
C opyright © ANPEC Electronics C orp.
8
Rev. A.1 - Sep., 2015
www.anpec.com.tw