ltc2978 Linear Technology Corporation, ltc2978 Datasheet - Page 6

• Manufacturer Part Number: ltc2978
• Description: Octal Pmbus Power Supply Monitor And Controller With Eeprom
• Manufacturer: Linear Technology Corporation

elecTrical characTerisTics
temperature range, otherwise specifications are at T
otherwise indicated. C
LTC2978
SYMBOL
I
V
I
V
V
I
EEPROM Characteristics
Endurance
Retention
Mass_Write
Digital Inputs SCL, SDA, CONTROL0, CONTROL1, WDI/RESETB, FAULTB00, FAULTB01, FAULTB10, FAULTB11, WP
V
V
V
I
t
t
t
f
C
Digital Input SHARE_CLK
V
V
f
t
t
I
C

VOUT_ENn
VOUT_ENn
VIN_EN
LEAK
SP
RESETB
WDI
WDI
SHARE_CLK_IN
LOW
RISE
LEAK
OUT
IN
VIN_EN
IH
IL
HYST
IN
IH
IL
IN
Enable Output (V
Enable Output (V
PARAMETER
Output Sourcing Current
Output Sinking Current
Output Leakage Current
Output Sinking Current
Output Leakage Current
Output High Voltage
Output Sourcing Current
Output Sinking Current
Leakage Current
(Note 8)
(Note 8)
Mass Write Operation Time (Note 9)
High Level Input Voltage
Low Level Input Voltage
Input Hysteresis
Input Leakage Current
Pulse Width of Spike Suppressed
Pulse Width to Assert Reset
Pulse Width to Reset Watchdog Timer
Watchdog Interrupt Input Frequency
Digital Input Capacitance
High Level Input Voltage
Low Level Input Voltage
Input Frequency Operating Range
Assertion Low Time
Rise Time
Input Leakage Current
Input Capacitance
IN_EN
OUT_EN
VDD33
) Characteristics
[7:4]) Characteristics
= 100nF , C
VDD25
= 100nF and C
CONDITIONS
V
Strong Pull-Down Enabled,
V
Weak Pull-Down Enabled, V
Internal Pull-Up Disabled,
0V ≤ V
Strong Pull-Down Enabled,
V
0V ≤ V
I
V
Strong Pull-Down Enabled, V
Weak Pull-Down Enabled, V
Internal Pull-Up Disabled,
0V ≤ V
0°C < T
Operations
T
STORE_USER_ALL, 0°C < T
EEPROM Write Operations
0V ≤ V
Pins Only
0V ≤ V
WDI/RESETB, WP Pins Only
FAULTBxx, CONTROLx Pins Only
SDA, SCL Pins Only
V
V
V
V
0V ≤ V
VIN_EN
A
VOUT_ENn
VOUT_ENn
WDI/RESETB
WDI/RESETB
OUT_ENn
IN_EN
SHARE_CLK
SHARE_CLK
< 85°C
A
= 25°C. V
VOUT_ENn
VOUT_ENn
VIN_EN
PIN
PIN
SHARE_CLK
Pull-Up Enabled, V
= –5µA, V
J
< 85°C During EEPROM Write
= 0.1V
≤ 5.5V, SDA, SCL, CONTROLx
≤ V
Pull-Up Enabled, V
= 0.4V
The
REF
< 0.8V
< 0.8V to V
≤ 1.5V
≤ 1.5V
≤ 15V
DD33
= 100nF .
l
≤ 15V
≤ 6V
PWR
DD33
≤ V
denotes the specifications which apply over the full operating
+ 0.3V, FAULTBxx,
DD33
= V
= 3.3V
SHARE_CLK
IN_SNS
VIN_EN
+ 0.3V
VOUT_ENn
VIN_EN
J
VIN_EN
VOUT_ENn
< 85°C During
= 1V
= 12V; V
> 1.6V
= 0.4V
= 0.4V
= 0.4V
= 1V
DD33
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
, V
DD25
10,000
0.825
11.6
MIN
300
2.1
0.3
1.6
–5
33
–5
33
10
90
3
3
3
and REF pins floating, unless
12.5
TYP
440
–6
50
–6
50
20
10
98
10
10
5
6
5
4100
MAX
14.7
200
110
450
1.5
0.8
1.1
–8
60
±1
±1
–8
60
±1
±2
±2
±1
8
9
8
1
UNITS
Cycles
Years
2978fa
MHz
kHz
mA
mA
mA
mV
ms
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µs
ns
µs
µs
pF
µs
ns
pF
V
V
V
V
V