APW8855 Datasheet, PDF (16/43 Pages) Anpec Electronics Coropration – High Current, High Frequency 7 Outputs Voltage Regulator and Power Management IC for High Performance Tablet and Ultra Notebook Applications

APW8855
13.4 VR3 Electrical Characteristics
These specifications apply over V_VSYS = 12V, V_OUT = 1.8V, TA = 25^oC, unless otherwise noted.
S ymb ol
Parame ter
Test Conditions
AP W8855 (VR3)
Min
Typ
Max
PWM CONTRO LLER
Switchi ng Fr eque ncy
Accu racy
De fa ult is 2MHz
-
±10
Ma ximum Duty Cycl e
90
93
96
Min imum Co ntrollab le On
Time
-
60
10 0
Hig h-side MOS FE T On
Re sistance
L ow-side MOS FE T On
Re sistance
Inp ut L eakage Curre nt
V1V8_ ALW _I N= 5V
V1V8_ ALW _I N= 5V
VR3 is off, V1V8_ ALW_IN= 5.5V
55
40
1
L X Leakag e Cu rrent
V1V8_ALW_L X = 5.5V, V1V8_ALW_IN=5.5V
1
Ze ro Cu rrent Offset
-5
5
PWM OUTPUT V OLTEGE
Output Vo ltag e Accuracy
TA = 25°C
-
±0.8
Output Vo ltag e Load
Re gulation
L oad Transient Drop Volta ge
L oad Transient Overshoo t
Vo ltag e
Output Step Ramp Rate
Accu racy
Output Vo ltag e Soft-start Rate
Tr=200n s, IOUT=0 .81 A to 3A, Refer to the
typical circuit
Tf=200n s, IOUT=3A to 0.81 A, Refer to the
typical circuit
±0.2
-3
+3
-1 0
+1 0
9
10
11
Output Dischar ge Re sistance CTL=0V
10
Fe edback Leakag e Cu rrent
PR O TE CTI ON
V1V8_ALW_FBP = 5.5V
-
-
10 0
Un der-voltage Protectio n
( UV P)
65
70
75
UV P Deb ounce Time
-
2
-
Over-voltage Pro te ction
( OVP )
OVP Debo unce Time
12 5
130
13 5
2
-
IOC P3
Hig h-side MOS FE T
Over-curre nt-
Protection(O CP )
4
5
6
OCP De boun ce TIme
2
Th ermal Shu tdo wn P rotectio n TJ Rising
150
Unit
%
%
ns
mΩ
mΩ
µA
µA
mV
%
%
%
%
%
mV/µs
Ω
nA
%
µs
%
µs
A
µs
?
Copyright © ANPEC Electronics Corp.
16
Rev. A.1 - Dec., 2015
www.anpec.com.tw