Datasheet

LTC2928
11
2928f
FU CTIO AL DIAGRA
UU
W
OV
10uA
RST
10uA
CMP4
10uA
CMP3
10uA
CMP2
10uA
STMR
2uA
22uA
PTMR
2uA
22uA
–
+
RTMR
2µA
22µA
CMP1
10µA
V
CC
TIMER
CONTROL
3
OUTPUT
CONTROL
SEQUENCING
LOGIC
6
CAS
50µA
100µA
20µA
20µA
100µA
FLT
1V
DONE
EN4
EN3
EN2
EN1
ENABLE CONTROL
V
CP
10µA
4
FAULT
MANAGER
THRESHOLD
CONTROL
V1 POLARITY
CONTROL
GAIN
ADJUST
RT4
ON
8
5
4
4
TIME
POSITION
DECODERS
STATE
DECODERS
RT3
RT2
RT1
12k
12k
12k
12k
RDIS
MS2
MS1
SQT2
SQT1
VSEL
V4
UV/OV
COMPARATORS
V3
V2
V1
OVA
V
CC
V
CP
V
OVA(TH)
V
CC
V
CC
V
CC
V
CC
V
CC
HV
CC
REF
GND
REFERENCE
UVLO
CHARGE
PUMP
REGULATOR
2928 BD
and one negative adjustable input. Negative supplies are
monitored on the V1 input. See Applications Information
for configuration table.
V1-V4: Voltage Monitor Inputs. Connect these high imped-
ance inputs to external resistive dividers between each
monitored power supply and ground (or REF for negative
supplies monitored on V1). See Applications Information
for selecting resistors to configure the monitor thresholds.
Voltage monitor inputs operate with their respective RT
inputs and EN outputs.
PIN FUNCTIONS