Datasheet

LTC2930
3
2930fa
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
I
V1
V1 Input Current V1 = 5V, I
VREF
= 12μA (Note 4)
●
52 75 μA
I
V2
V2 Input Current V2 = 3.3V
●
0.8 2 μA
I
V3
V3 Input Current V3 = 2.5V
V3 = 0.55V (ADJ Mode)
●
●
0.52 1.2
±15
μA
nA
I
V4
V4 Input Current V4 = 1.8V
V4 = 0.55V (ADJ Mode)
V4 = –0.02V (–ADJ Mode)
●
●
●
0.34 0.8
±15
±15
μA
nA
nA
I
V5
, I
V6
V5, V6 Input Current V5, V6 = 0.55V
●
±15 nA
I
CRT(UP)
CRT Pull-Up Current V
CRT
= GND
●
–1.4 –2 –2.6 μA
I
CRT(DN)
CRT Pull-Down Current V
CRT
= 1.3V
●
10 20 30 μA
t
RST
Reset Timeout Period C
RT
= 1500pF
●
234 ms
t
UV
V
n
Undervoltage Detect to RST V
n
Less Than Reset Threshold by More
than 1%
150 μs
V
OL
Voltage Output Low RST I
SINK
= 3mA, V
CC
= 3V
I
SINK
= 100μA, V
CC
= 1V
●
●
0.15
0.05
0.4
0.3
V
V
V
OH
Voltage Output High RST (Note 5) I
SOURCE
= –1μA
●
V2-1 V
V
IL
MR Input Threshold Low V
CC
= 3.3V to 5.5V
●
0.4 V
V
IH
MR Input Threshold High V
CC
= 3.3V to 5.5V
●
1.6 V
t
MRW
MR Input Pulse Width V
CC
= 3.3V
●
150 ns
t
MRD
Manual Reset Propagation Delay V
CC
= 3.3V, V
MR
Falling
●
0.1 1 μs
I
MR
MR Pull-Up Current V
MR
= 1V
●
–4 –10 –16 μA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device reliability
and lifetime.
Note 2: All currents into pins are positive, all voltages are referenced to GND
unless otherwise noted.
Note 3: The greater of V1, V2 is the internal supply voltage (V
CC
).
Note 4: Under static no-fault conditions, V1 will necessarily supply quiescent
current. If at any time V2 is larger than V1, V2 must be capable of supplying
the quiescent current, programming (transient) current and reference load
current.
Note 5: The output pin RST has a diode protected internal pull-up to V2 of
typically 6μA. However, an external pull-up resistor may be used when faster
rise times are required or for V
OH
voltages greater than V2.
ELECTRICAL CHARACTERISTICS
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
CC
= 5V, unless otherwise specifi ed. (Note 3)
V
n
Monitor Timing
t
RST
t
RST
t
MRW
2930 TD
V
RT
V
n
RST
MR
t
UV
t
MRD
TIMING DIAGRAM