Datasheet

LTC2928
3
2928f
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C, V
CC
= 3.3V unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Supply Pins: V
CC
, HV
CC
V
VCC
V
CC
Input Supply Range
●
2.9 6 V
I
VCC
V
CC
Input Supply Current HV
CC
= GND
●
1 2.5 mA
V
UVL
V
CC
Input Supply Undervoltage Lockout V
CC
Rising
●
2.75 2.8 2.85 V
V
UVL(HYST)
Undervoltage Lockout Hysteresis
●
50 100 150 mV
V
HVCC
High Voltage Input Supply Range
●
7.2 12 16.5 V
V
CC(REG)
Regulated V
CC
from HV
CC
V
HVCC
= 12V
●
3.2 3.3 3.4 V
I
REG
Regulated V
CC
Output Current to
External Load (Note 2)
●
–10 mA
I
HVCC
HV
CC
Input Supply Current I
REG
= 0mA, V
HVCC
= 12V
●
1 2 mA
Sequence Up/Down Pin: ON
V
ON
ON Threshold Voltage V
ON
Rising
●
0.985 1.00 1.015 V
V
ON(HYST)
ON Hysteresis
●
20 30 40 mV
I
ON(LKG)
ON Leakage Current V
ON
= 1V
●
±50 nA
Voltage Monitor Pins: V1, V2, V3, V4
V
MON(TH)
Reset Threshold Voltage
V1 Negative Threshold Voltage VSEL = V
CC
●
●
0.4925 0.500 0.5075
±18
V
mV
V
SEQ(TH)
Sequencing Thresholds
0.67 V
MON(TH)
0.33 V
MON(TH)
0.10 V
MON(TH)
See Table 4
●
●
●
0.315
0.149
0.032
0.333
0.167
0.05
0.351
0.185
0.068
V
V
V
I
MON(LKG)
Monitor Pin Leakage Current V
MON
= 0.55V
●
±15 nA
t
MON(UV)
Undervoltage Pulse Width Required to
Trip Comparators
V
MON
below V
MON(TH)
by 1% 225 µs
t
MON(OV)
Overvoltage Pulse Width Required to
Trip
`
O
`
V
V
MON
above Overvoltage Threshold by
1%
225 µs
Supply Enable Pins: EN1, EN2, EN3, EN4
V
EN
Enable Pin Voltage Output in On State I
EN
= –1µA
●
V
CC
+ 4.5 V
CC
+
5.5
V
CC
+ 6 V
I
EN(UP)
Enable Pin Pull-Up Current Enable Pin On, V
EN
≤ (V
CC
+ 4V)
●
–7.5 –10 –12.5 µA
V
EN(OL)
Enable Pin Voltage Output Low I
EN
= 2.5mA
●
0.25 0.4 V
Comparator Outputs: CMP1, CMP2, CMP3, CMP4
V
CMP(OL)
Comparator Voltage Output Low I
CMP
= 2.5mA
●
0.15 0.3 V
V
CMP(OH)
Comparator Voltage Output High
(Note 4)
I
CMP
= –1µA
●
V
CC
– 1 V
Three-State Selection Inputs: SQT1, SQT2, MS1, MS2, RDIS
V
IL
Voltage Input Low Threshold
●
0.4 V
V
IH
Voltage Input High Threshold
●
1.4 V
I
HZ
High Z Pin Current V
HZ
= 0.7V
V
HZ
= 1.1V
●
●
–10
10
µA
µA
Positive/Negative Selection Input: VSEL
V
IL
Voltage Input Low Threshold
●
0.4 V
V
IH
Voltage Input High Threshold
●
1.4 V
ELECTRICAL CHARACTERISTICS