LTC2909_15 Datasheet, PDF (3/16 Pages) Linear Technology – Precision Triple/Dual Input UV, OV and Negative Voltage Monitor

LTC2909
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_CC = 2.5V (LTC2909-2.5), V_CC = 3.3V (LTC2909-3.3), V_CC = 5V
(LTC2909-5), ADJ1 = ADJ2 = 0.55V, SEL = floating, unless otherwise noted. (Note 2)
SYMBOL
V_CC(MIN)
V_CC(SHUNT)
I_CC
V_RT
ΔV_RT
I_ADJ
V_CC(UVLO)
PARAMETER
Operating Supply Voltage
V_CC Shunt Regulation Voltage
V_CC Input Current
ADJ Input Threshold
ADJ Hysteresis (Note 4)
ADJ Input Current
V_CC UVLO Threshold
ΔV_CC(UVLO)
V_REF
I_TMR(UP)
I_TMR(DOWN)
t⎯_R⎯_S⎯_T(EXT)
t⎯_R⎯_S⎯_T(INT)
V_TMR(DIS)
ΔV_TMR(DIS)
V_TMR(INT)
ΔV_TMR(INT)
t_PROP
t_UV
V_OL(⎯_R⎯_S⎯_T)
UVLO Hysteresis (Note 4)
Buffered Reference Voltage
TMR Pull-Up Current
TMR Pull-Down Current
Reset Timeout Period, External
Reset Timeout Period, Internal
Timer Disable Voltage
Timer Disable Hysteresis
Timer Internal Mode Voltage
Timer Internal Mode Hysteresis
ADJx Comparator Propagation Delay
to ⎯R⎯S⎯T
V_CC Undervoltage Detect to ⎯R⎯S⎯T
⎯R⎯S⎯T Output Voltage Low
I_OH(⎯_R⎯_S⎯_T)
⎯R⎯S⎯T Output Voltage High Leakage
Three-State Input SEL
V_IL
V_IH
V_Z
I_SEL(Z)
Low Level Input Voltage
High Level Input Voltage
Pin Voltage when Left in Open State
Allowable Leakage in Open State
I_SEL
SEL Input Current
CONDITIONS
⎯R⎯S⎯T in Correct State
I_VCC = 1mA, I_VREF = 0
2.175 < V_CC < 6V
TMR = V_CC
V_ADJ = 0.55V
LTC2909-2.5
LTC2909-3.3
LTC2909-5
TMR = V_CC
V_CC > 2.175V, I_VREF = ±1mA
V_TMR = 1V
V_TMR = 1V
C_TMR = 2.2nF
V_TMR = 0V
V_TMR Rising
V_TMR Falling
V_TMR Falling
V_TMR Rising
ADJx Driven Beyond Reset Threshold
(V_RTX) by 5mV
V_CC Less Than UVLO Threshold
(V_CC(UVLO)) by 1%
V_CC = 0.5V, I = 5μA
V_CC = 1V, I = 100μA
V_CC = 3V, I = 2500μA
⎯R⎯S⎯T = V_CC
I_SEL = 0μA
SEL = V_CC or SEL = GND
MIN TYP MAX
● 0.5
● 6.0
6.5
6.9
●
50
150
● 0.4925 0.5000 0.5075
1.5
3.5
10.0
●
±15
● 2.175
● 2.871
● ^4.350
2.213
2.921
4.425
2.250
2.970
4.500
0.3
0.7
2.0
● 0.985 1.000 1.015
● –1.5 –2.1 –2.7
● 1.5
2.1
2.7
● 16
20
25
● 150
200
260
● V_CC
V_CC
V_CC
– 0.36 – 0.25 – 0.16
● 60
110
150
● 0.14 0.21 0.27
● 40
70
110
● 50
150
500
UNITS
V
V
μA
V
mV
nA
V
V
V
%
V
μA
μA
ms
ms
V
mV
V
mV
μs
● 50
150
500
μs
●
0.01 0.15
V
●
0.01 0.15
V
●
0.10 0.30
V
●
±1
μA
●
0.4
V
● 1.4
V
0.9
V
● ±5
μA
±10
μA
●
±25
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: 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
which exceeds 6V may exceed the rated terminal current. Operation
from higher voltage supplies requires a series dropping resistor. See
Applications Information.
Note 4: Threshold voltages have no hysteresis unless the part is in
comparator mode. Hysteresis is one-sided, affecting only invalid-to-valid
transitions. See Applications Information.
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