APW8855 Datasheet, PDF (14/43 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
13.2 VR1 Electrical Characteristics
These specifications apply over V_VSYS = 12V, V_{5V_ALW} = 5.06V, TA = 25^oC, unless otherwise noted.
S ymb ol
Parame ter
Test Conditions
AP W8855 (VR1)
Min
Typ
Max
LDO REGULATO R
VSYS_UVLO
VSYS Und er-voltage Lo ckou t
( UV LO)
VVSYS Rising , ena ble 5V_ LDO
Hysteresis
3.85
0.1
4.0
0 .15
4.15
0 .2
L DO Re gulator Unde r-voltage
V5V_LDO_POR _{L ockout (UV LO)}
V5V_LDO Rising , enab le other VRs
Hysteresis
4.15
0.1
4.3
0 .15
4.45
0 .2
V5 V_ LDO
L DO Re gulator Outp ut
Vo ltag e Accuracy
L DO Dro pout Voltage
L DO Cu rrent Limit
VVSYS=5.5V to 20V, 10mA
IOUT=1 00mA, V 5V_LD O= 5.06V
-2
+2
0 .4
15 0
200
25 0
L DO Di schar ge Resistance
10
L DO Power-o n De lay
V THBYP_5V B ypass Threshol d
V_SYS>V _{SYS_POR} to 5V_L DO soft-start starting
20
PWM Vol tag e Rising
91
94
97
Hysteresis
2
3
4
Bypass Switch On Resistance
-
L DO Soft-start Time
COUT=4.7 uF
Bypass Le akage Curre nt
V5V_ALW_BYP=5 .5V, V VSYS= 0V
-
EFFICIENCY
VOUT=5 V, IOUT=5mA to 50mA, DCR<10 mΩ
Efficiency (Re fe r to th e typical
cir cu it)
VOUT=5 V, IOUT=50mA to 500mA , DCR<10m
Ω
VOUT=5 V, IOUT=2 A, DCR<10mΩ
VOUT=5 V, IOUT=4 A, DCR<10mΩ
1.5
3
100
-
10 0
93
93
92
90
Unit
V
V
V
V
%
V
mA
Ω
µs
%V R 1
%V R 1
Ω
us
nA
%
%
%
%
13.3 VR2 Electrical Characteristics
These specifications apply over V_VSYS = 12V, V_OUT = 3.3V, T_A = 25^oC, unless otherwise noted.
S ymb ol
Parame ter
Test Conditions
AP W8855 (VR2)
Min
Typ
Max
PWM OUTPUT V OLTAGE
Output Vo ltag e Accuracy
TA = 25°C
-
-
±0.8
Output Vo ltag e Line/Lo ad
Re gulation
Vin=7.5V to 2 0V, I_OUT=2.16A to 8 A
±0.2
L oad Transient Drop Volta ge
Tr=200n s, IO UT=2.16A to 8A, Refe r to the
typical circuit
-4
L oad Transient Overshoo t
Vo ltag e
Tf=200n s, IO UT=8A to 2.16A, Refe r to the
typical circuit
+4
Output Step Ramp Rate
Accu racy
-1 0
+1 0
Output Vo ltag e Soft-start Rate
9
10
11
Output Dischar ge Re sistance
10
Fe edback Leakag e Cu rrent
V3V3_ALW_FBP = 5.5V
-
-
10 0
Unit
%
%
%
%
%
mV/µs
Ω
nA
Copyright © ANPEC Electronics Corp.
14
Rev. A.1 - Dec., 2015
www.anpec.com.tw