NCV8855
http://onsemi.com
10
ELECTRICAL CHARACTERISTICS (V
IN_SW
= V
IN
= V
ISNS1+
= V
ISNS1−
= V
ISNS2+
= V
ISNS2−
= 13.2 V, SYS_EN = LDO_EN =
HS_EN = 5 V, VOUT3 = 3.3 V, VOUT4 = 8.5 V, IOUT[1:4] = 0 A) Min/Max values are valid for the temperature range −40°C v T
J
v
150°C unless noted otherwise. Min/Max values are guaranteed by test, design or statistical correlation.
Parameter UnitMaxTypMinConditionsSymbol
LOW DROPOUT LINEAR REGULATOR CONTROLLER (LDO1, VOUT3) SPECIFICATIONS
Current Limit
ISNS1+ leakage current I
ISNS1+
SYS_EN = 0, T
J
= 25°C, V
ISNS1+
= 13.2 V 100 500 nA
ISNS1− leakage current I
ISNS1−
SYS_EN = 0, T
J
= 25°C, V
ISNS1−
= 13.2 V 100 500 nA
Short circuit threshold voltage V
LR_FB1
% of V
REF
60 70 80 %
Short circuit blanking time From rising edge of LDO_EN 10 12 14 ms
Error Amplifier
Feedback bias current LR_FB1 = 0.5 V 100 500 nA
Maximum |V
GS
| 2 mA, internally clamped 10 11.7 13.5 V
LOW DROPOUT LINEAR REGULATOR CONTROLLER (LDO2, VOUT4) SPECIFICATIONS
Output Voltage Regulation
Output voltage accuracy V
LR_FB2
tied to VOUT4 directly,
NTD20P06L pass device
− 2 2 %
Output voltage line regulation IOUT4 = 10 mA, 9 V v V
ISNS2+
v 18 V,
NTD20P06L pass device
−0.25 0.01 0.25 %
Output voltage load regulation 1 mA v IOUT4 v 500 mA, NTD20P06L
pass device
−0.5 0.2 0.5 %
Output load capacitance range C
OUT4
(Note 1) 10 100
mF
Output load capacitance ESR range (Note 1) 0.01 5
W
Power supply ripple rejection PSRR2 NTD20P06L pass device (Note 1) 60 dB
Current Limit
Current limit threshold voltage V
SNS2
V
ISNS2+
– V
ISNS2−
90 110 130 mV
ISNS2+ leakage current I
ISNS2+
SYS_EN = 0, T
J
= 25°C, V
ISNS2+
= 13.2 V 100 500 nA
ISNS2− leakage current I
ISNS2−
SYS_EN = 0, T
J
= 25°C, V
ISNS2−
= 13.2 V 100 500 nA
Short circuit threshold voltage V
LR_FB2
% of V
REF
60 70 80 %
Short circuit blanking time From rising edge of LDO_EN 10 12 14 ms
Error Amplifier
Feedback bias current LR_FB2 = 0.5 V 100 500 nA
Maximum |V
GS
| 2 mA, internally clamped 10 11.7 13.5 V
High−side Load Switch (HSS)
Current Limit
Peak current limit I
HSSLIM
2.00 2.80 3.64 A
Short circuit timeout t
SCP
1.300 1.506 1.800 ms
Short circuit threshold voltage V
SCP(HS_S)
4.0 4.5 5.0 V
Current overload threshold voltage V
DS
V
IN
– V
HS_S
3.3 3.95 4.6 V
Current overload timeout 2.600 3.012 3.600 ms
Voltage Clamp
Source output positive clamping voltage V
CLAMP+
1 mA v I
HS_S
v 2 A
V
CLAMP+
v V
IN
v V
OVP
15.4 16.0 16.6 V
Source output negative clamping voltage V
CLAMP−
I
LOADSW
= 50 mA −1.6 V
1. Guaranteed by design, not fully tested in production.
2. Indirectly guaranteed by test coverage of other parameters.
