LTC2934 Ver la hoja de datos (PDF) - Linear Technology
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LTC2934 Datasheet PDF : 12 Pages
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LTC2934
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C, VCC = 3.6V, unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VCC
VCC Input Supply Voltage
ICC
VCC Input Supply Current
Threshold Adjustment Inputs: ADJ, PFI
l 1.6
5.5
V
l 225
500 1000
nA
VTH
VTHM
VADJ(HYST)
Input Threshold (Monitored Voltage Falling)
ADJ to PFI Threshold Matching
Reset Threshold Hysteresis
(Monitored Voltage Rising)
l 394
400
406
mV
l
±2
±8
mV
l 18
20
25
mV
VPFI(HYST)
Power-Fail Threshold Hysteresis
(Monitored Voltage Rising)
tUV
Undervoltage Detect to RST or PFO Falling
ITH(LKG)
Threshold Adjustment Input Leakage Current
Control Inputs: MR, RT
VADJ or VPFI = VTH – 4mV (Note 3)
VADJ or VPFI = 420mV
l
8
10
15
mV
1
ms
l
0.1
±1
nA
VIN(TH)
Control Input Threshold
tPW
Input Pulse Width
tPD
Propagation Delay to RST Falling
RPU
Internal Pull-Up Resistance
ILK
Input Leakage Current (RT Input)
Reset and Power Fail Outputs: RST, PFO
RT
MR
MR
Manual Reset Falling
MR
RT = VCC or GND
l 0.3 • VCC
l 0.4
0.7 • VCC
V
1.4
V
l 20
μs
l
2
5
20
μs
l 600
900 1200
kΩ
l
±1
±10
nA
VOL
Voltage Output Low
VCC = 1V, 200μA Pull-Up Current
l
VCC = 3V, 3mA Pull-Up Current
l
25
100
mV
50
150
mV
VOH
Voltage Output High (LTC2934-2)
–200μA Pull-Down Current
l 0.7 • VCC
V
IOH
Leakage Current, Output High (LTC2934-1) VRST, VPFO = 3.6V
l
±1
±10
nA
tRST
Reset Timeout Period
RT Input High
RT Input Low
l 140
200
260
ms
l 10
15
25
ms
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. Guaranteed by design. Characterized, but not production tested.
2934f
3
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