Datasheet

LTC4315
3
4315f
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Power Supply/Start-Up
V
CC
Input Supply Voltage
l
2.9 5.5 V
V
DD,BUS
2-Wire Bus Supply Voltage (Note 3)
l
1.4 5.5 V
V
CC2
Output Side Accelerator
Supply Voltage
l
2.25 5.5 V
I
CC
Input Supply Current V
ENABLE
= V
CC
= V
CC2
= 5.5V, V
SDAIN,SCLIN
= 0V (Note 4)
l
6 8.1 10 mA
I
CC(DISABLED)
Input Supply Current V
ENABLE
= 0V, V
CC
= V
CC2
= 5.5V, V
SDAIN,SCLIN
= 0V
l
2.3 3.3 4.3 mA
I
CC2
V
CC2
Supply Current V
ENABLE
= V
CC
= V
CC2
= 5.5V, V
SDAIN,SCLIN
= 0V (Note 4)
l
0.2 0.31 0.4 mA
I
CC2(DISABLED)
V
CC2
Supply Current V
ENABLE
= 0V, V
CC
= V
CC2
= 5.5V, V
SDAIN,SCLIN
= 0V
l
0.15 0.25 0.35 mA
V
TH_UVLO
V
CC
UVLO Threshold V
CC
Rising
l
2.55 2.7 2.85 V
V
CC_UVLO(HYST)
UVLO Threshold Hysteresis
Voltage
200 mV
V
PRE
Precharge Voltage SDA, SCL Pins Open
l
0.8 1 1.2 V
Buffers
V
OS(SAT)
Buffer Offset Voltage I
OL
= 4mA, Driven V
SDA,SCL
= 50mV
l
100 190 280 mV
I
OL
= 500µA, Driven V
SDA,SCL
= 50mV
l
15 60 120 mV
V
OS
Buffer Offset Voltage I
OL
= 4mA, Driven V
SDA,SCL
= 200mV
l
50 120 180 mV
I
OL
= 500µA, Driven V
SDA,SCL
= 200mV
l
15 60 115 mV
V
IL(FALLING)
Buffer Input Logic Low
Voltage
(Notes 5 and 6)
l
0.3 • V
MIN
0.33 • V
MIN
0.36 • V
MIN
V
V
IL(HYST)
V
IL
Hysteresis Voltage 50 mV
I
LEAK
Input Leakage Current SDA, SCL Pins = 5.5V, V
CC
= 5.5V, 0V
l
±10 µA
C
IN
Input Capacitance SDA, SCL Pins (Note 7)
l
10 pF
Rise Time Accelerators
dV
dt
(RTA)
Minimum Slew Rate
Requirement
SDA, SCL Pins, V
CC
= V
CC2
= 5V
l
0.1 0.2 0.4 V/µs
V
RTA(TH)
Rise Time Accelerator DC
Threshold Voltage
V
CC
= V
CC2
= 5V (Note 5)
l
0.38 • V
MIN
0.41 • V
MIN
0.44 • V
MIN
V
∆V
ACC
Buffers Off to Accelerator On
Voltage
SDA, SCL Pins, V
CC
= V
CC2
= 5V (Note 5)
l
0.05 • V
MIN
0.07 • V
MIN
V
I
RTA
Rise Time Accelerator Pull-Up
Current
SDA, SCL Pins
ACC Grounded, V
CC
= V
CC2
= 5V (Note 8)
l
15 25 40 mA
ACC Open, V
CC
= V
CC2
= 5V (Note 8)
l
1.5 2.5 3.5 mA
Enable/Control
V
EN(TH)
ENABLE Threshold Voltage
l
1 1.4 1.8 V
V
DISCEN(TH)
DISCEN Threshold Voltage
l
1 1.4 1.8 V
I
LEAK
Input Leakage Current DISCEN, ENABLE Pins, V
CC
= 5.5V
l
0.1 ±1 µA
V
ACC(L,TH)
ACC Input Low Threshold
Voltage
V
CC
= 5V
l
0.2 • V
CC
0.3 • V
CC
0.4 • V
CC
V
V
ACC(H,TH)
ACC Input High Threshold
Voltage
V
CC
= 5V
l
0.7 • V
CC
0.8 • V
CC
0.9 • V
CC
V
I
ACC(IN,HL)
ACC High, Low Input Current V
CC
= V
CC2
= 5V, V
ACC
= 5V, 0V
l
±23 ±40 µA
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= V
CC2
= 3.3V unless otherwise noted.