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参数资料
| 型号： | LTC2912IDDB-3 |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封装： | 3 X 2 MM, PLASTIC, MO-229WECD-1, DFN-8 |
| 文件页数： | 6/12页 |
| 文件大小： | 168K |
| 代理商： | LTC2912IDDB-3 |
LTC2912
3
2912fa
ELECTRICAL CHARACTERISTICS
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.
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
●
1V
VCC(UVLO)
Supply Undervoltage Lockout
DIS = 0V, VCC Rising
●
1.9
2
2.1
V
ΔVCC(UVHYST) Supply Undervoltage Lockout Hysteresis
DIS = 0V
●
525
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
Output Delay
VHn = VUOT – 5mV or VLn = VUOT + 5mV
●
50
125
500
μs
IVHL
VH, VL Input Current
●
±15
nA
–40°C < TA < 125°
●
±30
nA
tUOTO
UV/OV Time-Out Period
CTMR = 1nF
●
6
8.5
12.5
ms
–40°C < TA < 125°
●
6
8.5
14
ms
VLATCH(VIH)
OV Latch Clear Input High
●
1.2
V
VLATCH(VIL)
OV Latch Clear Input Low
●
0.8
V
ILATCH
LATCH Input Current
VLATCH > 0.5V
●
±1
μA
IDIS
DIS Input Current
VDIS > 0.5V
●
1
2
3.3
μA
VDIS(VIH)
DIS Input High
●
1.2
V
VDIS(VIL)
DIS Input Low
●
0.8
V
ITMR(UP)
TMR Pull-Up Current
VTMR = 0V
●
–1.3
–2.1
–2.8
μA
–40°C < TA < 125°
●
–1.2
–2.1
–2.8
μA
ITMR(DOWN)
TMR Pull-Down Current
VTMR = 1.6V
●
1.3
2.1
2.8
μA
–40°C < TA < 125°
●
1.2
2.1
2.8
μA
VTMR(DIS)
Timer Disable Voltage
Referenced to VCC
●
–180
–270
mV
VOH
Output Voltage High UV/OV/OV
VCC = 2.3V, IUV/OV = –1μA
●
1V
VOL
Output Voltage Low UV/OV/OV
VCC = 2.3V, IUV/OV = 2.5mA
VCC = 1V, IUV = 100μA
●
0.10
0.01
0.30
0.15
V
The ● denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VCC = 3.3V, VL = 0.45V, VH = 0.55V, LATCH = VCC unless otherwise
noted. (Note 2)
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.
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