Datasheet

LTC2910
3
2910fc
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CC(MIN)
Minimum V
CC
Output Valid DIS = 0V
●
1V
V
CC(UVLO)
Supply Undervoltage Lockout V
CC
Rising, DIS = 0V
●
1.9 2 2.1 V
ΔV
CC(UVHYST)
Supply Undervoltage Lockout Hysteresis DIS = 0V
●
52550 mV
I
CC
Supply Current V
CC
= 2.3V to 6V
●
50 100 μA
V
REF
Reference Output Voltage I
VREF
= ±1mA
●
0.985 1 1.015 V
–40°C < T
A
< 125°C
●
0.985 1 1.020 V
V
RT
Vn Input Voltage Threshold
●
492 500 508 mV
t
PROP
Vn Input Threshold to Output Delay V
n
= V
RT
– 5mV
●
50 125 500 μs
I
VN
Vn Input Current
●
±15 nA
–40°C < T
A
< 125°C
●
±30 nA
t
RST
Reset Timeout Period C
TMR
= 1nF
●
6 8.5 12.5 ms
–40°C < T
A
< 125°C
●
6 8.5 14 ms
V
DIS(VIH)
DIS Input Threshold Voltage High
●
1.2 V
V
DIS(VIL)
DIS Input Threshold Voltage Low
●
0.8 V
I
DIS
DIS Input Current V
DIS
> 0.5V
●
123 μA
I
TMR(UP)
TMR Pull-Up Current V
TMR
= 0V
●
–1.3 –2.1 –2.8 μA
–40°C < T
A
< 125°C
●
–1.2 –2.1 –2.8 μA
I
TMR(DOWN)
TMR Pull-Down Current V
TMR
= 1.6V
●
1.3 2.1 2.8 μA
–40°C < T
A
< 125°C
●
1.2 2.1 2.8 μA
V
TMR(DIS)
Timer Disable Voltage Referenced to V
CC
●
–180 –270 mV
V
OH
Output Voltage High RST/RST V
CC
= 2.3V, I
RST/RST
= –1μA
●
1V
V
OL
Output Voltage Low RST/RST V
CC
= 2.3V, I
RST/RST
= 2.5mA
V
CC
= 1V, I
RST
= 100μA
●
0.1
0.01
0.3
0.15
V
V
Three-State Input SEL
V
IL
Low Level Input Voltage
●
0.4 V
V
IH
High Level Input Voltage
●
1.4 V
V
Z
Pin Voltage when Left in Hi-Z State I
SEL
= ±10μA
●
0.6 0.9 1.1 V
–40°C < T
A
< 125°C
●
0.6 0.9 1.2 V
I
SEL
SEL High, Low Input Current
●
±25 μA
I
SEL(MAX)
Maximum SEL Input Current SEL tied to either V
CC
or GND
●
±30 μA
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
= 3.3V, Vn = 0.55V, SEL = V
CC
, DIS = OPEN unless otherwise noted.
(Note 2)
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: V
CC
maximum pin voltage is limited by input current. Since the
V
CC
pin has an internal 6.5V shunt regulator, a low impedance supply that
exceeds 6V may exceed the rated terminal current. Operation from higher
voltage supplies requires a series dropping resistor. See Applications
Information.