OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

LTC2979CY#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
LTC2979
4
2979f
For more information www.linear.com/LTC2979
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
J
= 25°C. V
DD33
= 3.3V, V
IN_SNS
= 12V, V
DD25
and REF pins floating, unless
otherwise indicated. (Notes 2, 3)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
f
IN_ADC
Input Sampling Frequency 62.5 kHz
I
IN_ADC
Input Leakage Current V
IN_ADC
= 0V, 0V ≤ V
COMMONMODE
≤ 6V,
Current Sense Mode
l
±0.5 µA
Differential Input Current V
IN_ADC
= 0.17V, Current Sense Mode
l
80 250 nA
V
IN_ADC
= 6V, Voltage Sense Mode
l
10 15 µA
DAC Output Characteristics
N_V
DACP
Resolution 10 Bits
V
FS_VDACP
Full-Scale Output Voltage
(Programmable)
DAC Code = 0x3FF
DAC Polarity = 1
Buffer Gain Setting_0
Buffer Gain Setting_1
l
l
1.32
2.53
1.38
2.65
1.44
2.77
V
V
INL_V
DACP
Integral Nonlinearity (Note 8)
l
±2 LSB
DNL_V
DACP
Differential Nonlinearity (Note 8)
l
±2.4 LSB
V
OS_VDACP
Offset Voltage (Note 8)
l
±20 mV
V
DACP
Load Regulation (V
DACPn
– V
DACMn
) V
DACPn
= 2.65V, I
VDACPn
Sourcing = 2mA 100 ppm/mA
V
DACPn
= 0.1V, I
VDACPn
Sinking = 2mA 100 ppm/mA
PSRR (V
DACPn
– V
DACMn
) DC: 3.13V ≤ V
DD33
≤ 3.47V 60 dB
100mV Step in 20ns with 50pF Load 40 dB
DC CMRR (V
DACPn
– V
DACMn
) –0.1V ≤ V
DACMn
≤ 0.1V 60 dB
Leakage Current V
DACPn
Hi-Z, 0V ≤ V
DACPn
≤ 6V
l
±100 nA
Short-Circuit Current Low V
DACPn
Shorted to GND
l
–10 –4 mA
Short-Circuit Current High V
DACPn
Shorted to V
DD33
l
4 10 mA
C
OUT
Output Capacitance V
DACPn
Hi-Z 10 pF
t
S_VDACP
DAC Output Update Rate Fast Servo Mode 500 µs
DAC Soft-Connect Comparator Characteristics
V
OS_CMP
Offset Voltage V
DACPn
= 0.2V
l
±1 ±18 mV
V
DACPn
= 1.3V
l
±2 ±26 mV
V
DACPn
= 2.65V
l
±3 ±52 mV
Voltage Supervisor Characteristics
V
IN_VS
Input Voltage Range (Programmable) V
IN_VS
= (V
SENSEPn
– V
SENSEMn
)
Low Resolution Mode
High Resolution Mode
l
l
0
0
6
3.8
V
V
Single-Ended Voltage: V
SENSEMn
l
–0.1 0.1 V
N_VS Voltage Sensing Resolution 0V to 3.8V Range: High Resolution Mode 4 mV/LSB
0V to 6V Range: Low Resolution Mode 8 mV/LSB
TUE_VS Total Unadjusted Error 2V ≤ V
IN_VS
≤ 6V, Low Resolution Mode
l
±1.25 % of
Reading
1.5V < V
IN_VS
≤ 3.8V, High Resolution
Mode
l
±1.0 % of
Reading
0.8V ≤ V
IN_VS
≤ 1.5V, High Resolution
Mode
l
±1.5 % of
Reading
t
S_VS
Update Period 12.21 µs
LTC2979
5
2979f
For more information www.linear.com/LTC2979
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
J
= 25°C. V
DD33
= 3.3V, V
IN_SNS
= 12V, V
DD25
and REF pins floating, unless
otherwise indicated. (Notes 2, 3)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN_SNS
Input Characteristics
V
VIN_SNS
V
IN_SNS
Input Voltage Range
l
0 15 V
R
VIN_SNS
V
IN_SNS
Input Resistance
l
70 90 110 kΩ
TUE
VIN_SNS
VIN_ON, VIN_OFF Threshold Total
Unadjusted Error
3V ≤ V
VIN_SNS
≤ 8V
l
±2.0 % of
Reading
V
VIN_SNS
> 8V
l
±1.0 % of
Reading
READ_VIN Total Unadjusted Error 3V ≤ V
VIN_SNS
≤ 8V
l
±1.5 % of
Reading
V
VIN_SNS
> 8V
l
±1.0 % of
Reading
Temperature Sensor Characteristics
TUE_TS Total Unadjusted Error ±1 °C
V
OUT
Enable Output (V
OUT_EN
[3:0]) Characteristics
I
VOUT_ENn
Output Sinking Current Strong Pull-Down Enabled,
V
VOUT_ENn
= 0.4V
l
3 5 8 mA
Weak Pull-Down Enabled, V
VOUT_ENn
= 0.4V
l
33 50 60 µA
Output Leakage Current Internal Pull-Up Disabled,
0V ≤ V
VOUT_ENn
≤ 6V
l
±1 µA
V
VOUT_VALID
Minimum V
DD33
when V
VOUT_ENn
Valid V
VOUT_ENn
≤ 0.4V
l
1.1 V
V
OUT
Enable Output (V
OUT_EN
[7:4]) Characteristics
I
VOUT_ENn
Output Sinking Current Strong Pull-Down Enabled,
V
OUT_ENn
= 0.1V
l
3 6 9 mA
Output Leakage Current 0V ≤ V
VOUT_ENn
≤ 6V
l
±1 µA
V
IN
Enable Output (V
IN_EN
) Characteristics
I
VIN_EN
Output Sinking Current V
VIN_EN
= 0.4V
l
3 5 8 mA
Leakage Current Internal Pull-Up Disabled,
0V ≤ V
VIN_EN
≤ 6V
l
±1 µA
V
VOUT_VALID
Minimum V
DD33
when V
VOUT_ENn
Valid V
VOUT_ENn
≤ 0.4V
l
1.1 V
EEPROM Characteristics
Endurance (Notes 10, 11) 0°C < T
J
< 85°C During EEPROM Write
Operations
l
10,000 Cycles
Retention (Notes 10, 11) T
J
< 105°C
l
20 Years
t
MASS_WRITE
Mass Write Operation Time (Note 12) STORE_USER_ALL, 0°C < T
J
< 85°C During
EEPROM Write Operations
l
440 4100 ms
Digital Inputs SCL, SDA, CONTROL0, CONTROL1, WDI/RESETB, FAULTB00, FAULTB01, FAULTB10, FAULTB11, WP
V
IH
High Level Input Voltage
l
2.1 V
V
IL
Low Level Input Voltage
l
1.5 V
V
HYST
Input Hysteresis 20 mV
I
LEAK
Input Leakage Current 0V ≤ V
PIN
≤ 5.5V, SDA, SCL, CONTROL
n
Pins Only
l
±2 µA
0V ≤ V
PIN
≤ V
DD33
+ 0.3V, FAULTB
zn
,
WDI/RESETB, WP Pins Only
l
±2 µA
LTC2979
6
2979f
For more information www.linear.com/LTC2979
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
J
= 25°C. V
DD33
= 3.3V, V
IN_SNS
= 12V, V
DD25
and REF pins floating, unless
otherwise indicated. (Notes 2, 3)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
t
SP
Pulse Width of Spike Suppressed FAULTB
zn
, CONTROL
n
Pins Only 10 µs
SDA, SCL Pins Only 98 ns
t
FAULT_MIN
Minimum Low Pulse Width for
Externally Generated Faults
110 ms
t
RESETB
Pulse Width to Assert Reset V
WDI/RESETB
≤ 1.5V
l
300 µs
t
WDI
Pulse Width to Reset Watchdog Timer V
WDI/RESETB
≤ 1.5V
l
0.3 200 µs
f
WDI
Watchdog Interrupt Input Frequency
l
1 MHz
C
IN
Digital Input Capacitance 10 pF
Digital Input SHARE_CLK
V
IH
High Level Input Voltage
l
1.6 V
V
IL
Low Level Input Voltage
l
0.8 V
f
SHARE_CLK_IN
Input Frequency Operating Range
l
90 110 kHz
t
LOW
Assertion Low Time V
SHARE_CLK
< 0.8V
l
0.825 1.1 µs
t
RISE
Rise Time V
SHARE_CLK
< 0.8V to V
SHARE_CLK
> 1.6V
l
450 ns
I
LEAK
Input Leakage Current 0V ≤ V
SHARE_CLK
≤ V
DD33
+ 0.3V
l
±1 µA
C
IN
Input Capacitance 10 pF
Digital Outputs SDA, ALERTB, PWRGD, SHARE_CLK, FAULTB00, FAULTB01, FAULTB10, FAULTB11
V
OL
Digital Output Low Voltage I
SINK
= 3mA
l
0.4 V
f
SHARE_CLK_OUT
Output Frequency Operating Range 5.49kΩ Pull-Up to V
DD33
l
90 100 110 kHz
Digital Inputs ASEL0,ASEL1
V
IH
Input High Threshold Voltage
l
V
DD33
– 0.5 V
V
IL
Input Low Threshold Voltage
l
0.5 V
I
IH
, I
IL
High, Low Input Current ASEL[1:0] = 0, V
DD33
l
±95 µA
I
HIZ
Hi-Z Input Current
l
±24 µA
C
IN
Input Capacitance 10 pF
Serial Bus Timing Characteristics
f
SCL
Serial Clock Frequency (Note 13)
l
10 400 kHz
t
LOW
Serial Clock Low Period (Note 13)
l
1.3 µs
t
HIGH
Serial Clock High Period (Note 13)
l
0.6 µs
t
BUF
Bus Free Time Between Stop and Start
(Note 13)
l
1.3 µs
t
HD,STA
Start Condition Hold Time (Note 13)
l
600 ns
t
SU,STA
Start Condition Setup Time (Note 13)
l
600 ns
t
SU,STO
Stop Condition Setup Time (Note 13)
l
600 ns
t
HD,DAT
Data Hold Time (LTC2979 Receiving
Data) (Note 13)
l
0 ns
Data Hold Time (LTC2979 Transmitting
Data) (Note 13)
l
300 900 ns
t
SU,DAT
Data Setup Time (Note 13)
l
100 ns
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

LTC2979CY#PBF

Mfr. #:
Buy LTC2979CY#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Power Management Specialized - PMIC 16-Channel PMBus Low-Voltage Power System Manager
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet