LTC2912IDDB-1 データシートの表示（PDF） - Linear Technology
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LTC2912IDDB-1 Datasheet PDF : 12 Pages
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LTC2912
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 3.3V, VL = 0.45V, VH = 0.55V, LATCH = VCC unless otherwise
noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VSHUNT
VCC Shunt Regulator Voltage
ICC = 5mA
● 6.2
6.6
7.2
V
–40°C < TA < 125°
● 6.2
6.6
7.3
V
ΔVSHUNT
VCC Shunt Regulator Load Regulation
ICC = 2mA to 10mA
●
200 300
mV
VCC
Supply Voltage (Note 3)
● 2.3
VSHUNT
V
VCCR(MIN)
Minimum VCC Output Valid
DIS = 0V
●
1
V
VCC(UVLO)
Supply Undervoltage Lockout
DIS = 0V, VCC Rising
● 1.9
2
2.1
V
ΔVCC(UVHYST) Supply Undervoltage Lockout Hysteresis DIS = 0V
●
5
25
50
mV
ICC
Supply Current
VCC = 2.3V to 6V
●
29
70
μA
VUOT
Undervoltage/Overvoltage Threshold
● 492
500
508
mV
tUOD
Undervoltage/Overvoltage Threshold to
VHn = VUOT – 5mV or VLn = VUOT + 5mV
● 50
125 500
μs
Output Delay
IVHL
VH, VL Input Current
tUOTO
UV/OV Time-Out Period
VLATCH(VIH)
VLATCH(VIL)
ILATCH
OV Latch Clear Input High
OV Latch Clear Input Low
LATCH Input Current
–40°C < TA < 125°
CTMR = 1nF
–40°C < TA < 125°
VLATCH > 0.5V
●
±15
nA
●
±30
nA
●
6
8.5
12.5
ms
●
6
8.5
14
ms
● 1.2
V
●
0.8
V
●
±1
μA
IDIS
VDIS(VIH)
VDIS(VIL)
ITMR(UP)
DIS Input Current
DIS Input High
DIS Input Low
TMR Pull-Up Current
ITMR(DOWN) TMR Pull-Down Current
VTMR(DIS)
VOH
VOL
Timer Disable Voltage
Output Voltage High UV/OV/OV
Output Voltage Low UV/OV/OV
VDIS > 0.5V
VTMR = 0V
–40°C < TA < 125°
VTMR = 1.6V
–40°C < TA < 125°
Referenced to VCC
VCC = 2.3V, IUV/OV = –1μA
VCC = 2.3V, IUV/OV = 2.5mA
VCC = 1V, IUV = 100μA
●
1
2
3.3
μA
● 1.2
V
●
0.8
V
● –1.3 –2.1 –2.8
μA
● –1.2 –2.1 –2.8
μA
● 1.3
2.1
2.8
μA
● 1.2
2.1
2.8
μA
● –180 –270
mV
●
1
V
●
0.10 0.30
V
●
0.01 0.15
V
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: VCC maximum pin voltage is limited by input current. Since the
VCC 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.
2912fa
3
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