LTC4306I Просмотр технического описания (PDF) - Linear Technology
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LTC4306I Datasheet PDF : 20 Pages
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LTC4306
ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full specified temperature
range, otherwise specifications are at TA = 25°C. VCC = 3.3V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
VUVLOHYST
UVLO Threshold Hysteresis Voltage
VTH EN
ENABLE Falling Threshold Voltage
VENHYST
ENABLE Threshold Hysteresis Voltage
tPHLEN
ENABLE Delay, On-Off
tPLHEN
ENABLE Delay, Off-On
IINEN
ENABLE Input Leakage Current
VLOWREADY
READY Pin Logic Low Output Voltage
IOFFREADY
READY Off State Input Leakage Current
Upstream-Downstream Buffers
VENABLE = 0V, 5.5V, VCC = 5.5V
IPULL-UP = 3mA, VCC = 2.7V
VREADY = 0V, 5.5V, VCC = 5.5V
● 100 175 250
mV
● 0.8
1.0
1.2
V
60
mV
60
ns
20
ns
●
0
±1
µA
●
0.18 0.4
V
●
0
±1
µA
VOS,BUF
Buffer Offset Voltage
RBUS = 10k, VCC = 2.7V, 5.5V (Note 4) ●
25
60
100
mV
VOS,UP-BUF
Upstream Buffer Offset Voltage
VIN, BUFFER = 0V
VCC = 2.7V, RBUS = 2.7k (Note 4)
● 40
80
120
mV
VCC = 5.5V, RBUS = 2.7k (Note 4)
●
70
110
150
mV
VOS,DOWN-BUF
Downstream Buffer Offset Voltage
VIN, BUFFER = 0V
VCC = 2.7V, RBUS = 2.7k (Note 4)
●
60
110
160
mV
VCC = 5.5V, RBUS = 2.7k (Note 4)
●
80
140
200
mV
VOL
Output Low Voltage, VIN,BUFFER = 0V
SDA, SCL Pins; ISINK = 4mA,
●
VCC = 3V, 5.5V
400
mV
Output Low Voltage, VIN,BUFFER = 0.2V
SDA, SCL Pins; ISINK = 500µA,
●
VCC = 2.7V, 5.5V
320
mV
VIL,MAX
Buffer Input Logic Low Voltage
VCC = 2.7V, 5.5V
● 0.4 0.52 0.64
V
VTHSDA,SCL
Downstream SDA, SCL Logic Threshold Voltage
● 0.8
1.0
1.2
V
ILEAK
Input Leakage Current
SDA, SCL Pins; VCC = 0V to 5.5V;
●
Buffers Inactive
0
±5
µA
Rise Time Accelerators
VSDA,SCL slew
Minimum Slew Requirement to Activate
Rise Time Accelerator Currents
SDAIN, SCLIN, SDA1-4, SCL1-4 Pins ●
0.4
0.8
V/µs
VRISE,DC
Rise Time Accelerator DC Threshold Voltage SDAIN, SCLIN, SDA1-4, SCL1-4 Pins ● 0.7
0.8
1
V
IBOOST
Rise Time Accelerator Pull-Up Current
SDAIN, SCLIN, SDA1-4, SCL1-4 Pins
4
5.5
mA
(Note 3)
GPIOs
VGPIO(TH)
GPIO Pin Input Threshold
VGPIO(OL)
GPIO Pin Output Low Voltage
VGPIO(OH)
GPIO Pin Output High Voltage
IGPIO(IN)
GPIO Pin Input Leakage Current
Stuck Low Timeout Circuitry
IGPIO = 5mA, VCC = 2.7V
IGPIO = –200µA, VCC = 2.7V
VGPIO = 0V, 5.5V, VCC = 5.5V
● 0.8
1
1.2
V
●
0.2
0.4
V
● VCC – 0.3
V
●
0
±1
µA
VTIMER(L)
VTIMER(HYST)
TTIMER1
TTIMER2
TTIMER3
ALERT
Stuck Low Falling Threshold Voltage
Stuck Low Threshold Hysteresis Voltage
Timeout Time #1
Timeout Time #2
Timeout Time #3
VCC = 2.7V, 5.5V
TIMSET1,0 = 01
TIMSET1,0 = 10
TIMSET1,0 = 11
● 0.4 0.52 0.64
V
80
mV
● 25
30
35
ms
● 12.5
15
17.5
ms
● 6.25 7.5 8.75
ms
VALERT(OL)
IOFF,ALERT
IIN,ALERT1-4
ALERT Output Low Voltage
ALERT Off State Input Leakage Current
ALERT1-ALERT4 Input Current
IALERT = 3mA, VCC = 2.7V
VALERT = 0V, 5.5V
VALERT1-4 = 0V, 5.5V
●
0.2
0.4
V
●
0
±1
µA
●
0
±1
µA
4306f
3
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