Datasheet

LTC4306
3
4306f
The ● denotes specifications which apply over the full specified temperature
range, otherwise specifications are at T
A
= 25°C. V
CC
= 3.3V unless otherwise noted.
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
UVLOHYST
UVLO Threshold Hysteresis Voltage ● 100 175 250 mV
V
TH EN
ENABLE Falling Threshold Voltage ● 0.8 1.0 1.2 V
V
ENHYST
ENABLE Threshold Hysteresis Voltage 60 mV
t
PHLEN
ENABLE Delay, On-Off 60 ns
t
PLHEN
ENABLE Delay, Off-On 20 ns
I
INEN
ENABLE Input Leakage Current V
ENABLE
= 0V, 5.5V, V
CC
= 5.5V ● 0 ± 1 µA
V
LOWREADY
READY Pin Logic Low Output Voltage I
PULL-UP
= 3mA, V
CC
= 2.7V ● 0.18 0.4 V
I
OFFREADY
READY Off State Input Leakage Current V
READY
= 0V, 5.5V, V
CC
= 5.5V ● 0 ± 1 µA
Upstream-Downstream Buffers
V
OS,BUF
Buffer Offset Voltage R
BUS
= 10k, V
CC
= 2.7V, 5.5V (Note 4) ● 25 60 100 mV
V
OS,UP-BUF
Upstream Buffer Offset Voltage V
CC
= 2.7V, R
BUS
= 2.7k (Note 4) ● 40 80 120 mV
V
IN, BUFFER
= 0V V
CC
= 5.5V, R
BUS
= 2.7k (Note 4) ● 70 110 150 mV
V
OS,DOWN-BUF
Downstream Buffer Offset Voltage V
CC
= 2.7V, R
BUS
= 2.7k (Note 4) ● 60 110 160 mV
V
IN, BUFFER
= 0V V
CC
= 5.5V, R
BUS
= 2.7k (Note 4) ● 80 140 200 mV
V
OL
Output Low Voltage, V
IN,BUFFER
= 0V SDA, SCL Pins; I
SINK
= 4mA, ● 400 mV
V
CC
= 3V, 5.5V
Output Low Voltage, V
IN,BUFFER
= 0.2V SDA, SCL Pins; I
SINK
= 500µA, ● 320 mV
V
CC
= 2.7V, 5.5V
V
IL,MAX
Buffer Input Logic Low Voltage V
CC
= 2.7V, 5.5V ● 0.4 0.52 0.64 V
V
THSDA,SCL
Downstream SDA, SCL Logic Threshold Voltage ● 0.8 1.0 1.2 V
I
LEAK
Input Leakage Current SDA, SCL Pins; V
CC
= 0V to 5.5V; ● 0 ± 5 µA
Buffers Inactive
Rise Time Accelerators
V
SDA,SCL slew
Minimum Slew Requirement to Activate SDAIN, SCLIN, SDA1-4, SCL1-4 Pins ● 0.4 0.8 V/µs
Rise Time Accelerator Currents
V
RISE,DC
Rise Time Accelerator DC Threshold Voltage SDAIN, SCLIN, SDA1-4, SCL1-4 Pins ● 0.7 0.8 1 V
I
BOOST
Rise Time Accelerator Pull-Up Current SDAIN, SCLIN, SDA1-4, SCL1-4 Pins 4 5.5 mA
(Note 3)
GPIOs
V
GPIO(TH)
GPIO Pin Input Threshold ● 0.8 1 1.2 V
V
GPIO(OL)
GPIO Pin Output Low Voltage I
GPIO
= 5mA, V
CC
= 2.7V ● 0.2 0.4 V
V
GPIO(OH)
GPIO Pin Output High Voltage I
GPIO
= –200µA, V
CC
= 2.7V ● V
CC
– 0.3 V
I
GPIO(IN)
GPIO Pin Input Leakage Current V
GPIO
= 0V, 5.5V, V
CC
= 5.5V ● 0 ± 1 µA
Stuck Low Timeout Circuitry
V
TIMER(L)
Stuck Low Falling Threshold Voltage V
CC
= 2.7V, 5.5V ● 0.4 0.52 0.64 V
V
TIMER(HYST)
Stuck Low Threshold Hysteresis Voltage 80 mV
T
TIMER1
Timeout Time #1 TIMSET1,0 = 01 ● 25 30 35 ms
T
TIMER2
Timeout Time #2 TIMSET1,0 = 10 ● 12.5 15 17.5 ms
T
TIMER3
Timeout Time #3 TIMSET1,0 = 11 ● 6.25 7.5 8.75 ms
ALERT
V
ALERT(OL)
ALERT Output Low Voltage I
ALERT
= 3mA, V
CC
= 2.7V ● 0.2 0.4 V
I
OFF,ALERT
ALERT Off State Input Leakage Current V
ALERT
= 0V, 5.5V ● 0 ± 1 µA
I
IN,ALERT1-4
ALERT1-ALERT4 Input Current V
ALERT1-4
= 0V, 5.5V ● 0 ± 1 µA