Datasheet

LTC3375
5
3375fc
For more information www.linear.com/3375
elecTrical characTerisTics
The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T
A
= 25°C (Note 2). V
CC
= V
IN1-8
= 3.3V, unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
PGOOD(FALL)
Falling PGOOD Threshold Voltage Full-Scale (1, 1, 1, 1) Reference Voltage 92.5 %
V
PGOOD(HYS)
PGOOD Hysteresis 1 %
Buck Regulators Combined
I
FWD2
PMOS Current Limit 2 Buck Converters Combined (Note 5) 4.6 A
I
FWD3
PMOS Current Limit 3 Buck Converters Combined (Note 5) 6.9 A
I
FWD4
PMOS Current Limit 4 Buck Converters Combined (Note 5) 9.2 A
V
CC
Regulator
V
FBVCC
FBV
CC
Regulation Voltage 1.17 1.2 1.23 V
R
REG
Pull-Down Resistance for V
CC
(Regulator)
200 Ω
V
VSHNT_MAX
V
SHNT
Clamp Voltage I
SHNT
= 2mA, FBV
CC
= 0V 6.1 V
R
CLAMP
Pull-Down Resistance for V
SHNT
(Clamp) 200 Ω
I
2
C Port
ADDRESS I
2
C Address
l
0110100[R/WB]
V
IH
Input High Voltage SDA/SCL
l
1.2 V
V
IL
Input Low Voltage SDA/SCL
l
0.4 V
I
IH
Input High Current SDA/SCL 50 nA
I
IL
Input Low Current SDA/SCL 50 nA
V
OL_SDA
SDA Output Low Voltage I
SDA
= 3mA 0.4 V
f
SCL
Clock Operating Frequency 400 kHz
t
BUF
Bus Free Time Between Stop and Start
Condition
1.3 µs
t
HD_SDA
Hold Time After Repeated Start
Condition
0.6 µs
t
SU_STA
Repeated Start Condition Set-Up Time 0.6 µs
t
SU_STO
Stop Condition Set-Up Time 0.6 µs
t
HD_DAT(O)
Data Hold Time Output 0 900 ns
t
HD_DAT(I)
Data Hold Time Input 0 ns
t
SU_DAT
Data Set-Up Time 250 ns
t
LOW
SCL Clock Low Period 1.3 µs
t
HIGH
SCL Clock High Period 0.6 µs
t
f
Clock/Data Fall Time C
B
= Capacitance of One Bus Line (pF) 20+0.1C
B
300 ns
t
r
Clock/Data Rise Time C
B
= Capacitance of One Bus Line (pF) 20+0.1C
B
300 ns
Interface Logic Pins (ON, KILL, RST, IRQ, PB, WDI, WDO)
I
OH
Output High Leakage Current ON, RST, IRQ, WDO 5.5V at Pin -1 1 µA
V
OL
Output Low Voltage ON, RST, IRQ, WDO 3mA Into Pin 0.1 0.4 V
V
IH
Input High Threshold KILL, PB, WDI
l
1.2 V
V
IL
Input Low Threshold KILL, PB, WDI
l
0.4 V
t
WDI
Time From Last WDI 1.5 sec
t
WDO
WDO Low Time Absent a Transition at WDI 200 ms
t
WDRESET
Time From a WDI Transition Until the
WD Timer Is Reset
2 µs