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APW8868B Scheda tecnica(PDF) 6 Page - Anpec Electronics Coropration

Il numero della parte APW8868B
Spiegazioni elettronici  DDR2 AND DDR3/DDR3L SYNCHRONOUS BUCK CONTROLLER WITH 1.5A LDO SUPPORT LOW IQ & DROOP
PDF  26 Pages
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Produttore elettronici  ANPEC [Anpec Electronics Coropration]
Homepage  http://www.anpec.com.tw
Logo ANPEC - Anpec Electronics Coropration

APW8868B Scheda tecnica(HTML) 6 Page - Anpec Electronics Coropration

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Copyright
© ANPEC Electronics Corp.
Rev. A.3 - Oct., 2017
www.anpec.com.tw
6
APW8868B
Electrical Characteristics
Refer to the typical application circuits. These specifications apply over V
VCC=VBOOT=5V, VIN=12V and TA= -40 ~ 85
oC, unless
otherwise specified. Typical values are at T
A=25
oC.
APW 8868 B
Sym bol
Param eter
Test Conditions
Min
Typ
Max
Unit
VDDQ OUTPUT
TA = 25
o
C
0.67
0.6 75
0.685
V
T
A = - 40
oC to 85 oC
0 .6 675
0.6 75
0 .6 825
V
TA = 25
o C,
VVCC = 4 .5V to 5.5V, VIN = 3V to 2 8V
-0.1
-
+0.1
%
VVFB
VFB Regula ti on Vo lta ge
TA = 25
o C,
Load = 0 to 10A , VVCC = 4.5 V to 5.5V
-1
-
+1
%
VFB Input Cu rrent
VVFB= 0.78V
-0.1
-
+0.1
µA
VDDQ Discha rge Curren t
V
S3 = VS5 = 0 V, V VDDQSNS = 0.5 V,
15
25
-
mA
PWM CONTRO LLE RS
FSW
Ope rating Frequ ency
Adju stabl e Fre quen cy
400
-
550
KHz
TSS
Internal So ft S ta rt Time
S5 is Hi gh to 0.9*VO UT Regula tio n
0.77
1.1
1 .4
ms
TO
Fast on time
VIN =1 9V, V VDDQ=1 .5V , RTON =620K
Ω
175
2 05
235
ns
TOFF(MIN)
Minimum off time
-
3 00
-
ns
TON(MIN)
Slo w on time
80
11 0
140
ns
Zero-Crossing Thresh old
-9.5
0.5
10.5
mV
VDDQ PRO TE CTIONS
TA = 25
o C
4
5
6
µA
CS Pin Sink Curren t
Tempera tur e Co efficient,
On The Basis of 25
°C
-
4500
-
ppm/
oC
OCP Comparator Offset
(VVCC – V CS) – (V PHASE – P GND),
VVCC – VCS = 6 0mV
-18
0
+1 8
mV
VDDQ Curren t Limit S ettin g Ran ge V
VCC -VCS
30
-
200
mV
VDDQ OVP Tr ip Thre sh old
VVDDQ Risin g
120
1 25
130
%
VDDQ OVP Debo unce Delay
VFB Rising, DV=1 0mV
-
1.5
-
µs
VDDQ UVP Trip Threshol d
V
VDDQ Falling
60
70
80
%
VDDQ UVP Deboun ce
-
10
-
µs
PG OOD
PG OOD in fr om Lo we r ( PGO OD G oes High)
87
90
93
%
V
PGOOD
PG OOD Th reshold
PGO OD in from High er (PGO OD G oes Hi gh)
120
1 25
130
%
IPGOOD
PG OOD Leakag e Cu rrent
VPGOOD=5V
-
0.1
1 .0
µA
PG OOD Sink Curren t
VPGOOD=0.3V
2.5
7.5
-
mA
PG OOD Debou nce Time
-
63
-
µs
TSSPOK
PO K Soft Star t tim e
S5 is Hi gh to PO K Ready
1.5
2
2 .6
ms



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