Datasheet

LTC2995
3
2995f
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C, V
CC
= 3.3V, unless otherwise noted.
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All currents into pins are positive; all voltages are referenced to
GND unless otherwise noted.
Note 3: Remote diode temperature, not LTC2995 temperature.
Note 4: Guaranteed by design and test correlation.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
T
conv
Temperature Update Interval
l
3.5 5 ms
K
T
V
PTAT
Slope
Ideality Factor η = 1.004
4mV/K
V
PTAT
Load Regulation I
LOAD
= ±200A ±1.5 mV
T
int
Internal Temperature Accuracy
T
AMB
= –40°C to 125°C
±0.5
±2
±1 °C
°C
T
RMT
Remote Temperature Error, η = 1.004
0°C to 85°C (Notes 3, 4)
–40°C to 0°C (Notes 3, 4)
85°C to 125°C (Notes 3, 4)
±0.25
±0.25
±0.25
±1
±1.5
±1.5
°C
°C
°C
Temperature Noise 0.15
0.01
°C
RMS
°C
RMS
/√Hz
T
VCC
Temperature Error vs Supply
l
±0.5 °C/V
T
RS
Series Resistance Cancellation Error R
SERIES
= 100
l
±0.25 ±1 °C
Temperature and Voltage Monitoring
V
UOT
Undervoltage/Overvoltage Threshold
l
492 500 508 mV
T
OFF
VT1, VT2 Offset
l
–3 –1 1 °C
∆T
HYST
VT1, VT2 Temperature Hysteresis
l
2 5 10 °C
t
UOD
UV, OV Input 5mV Above/Below Threshold
l
0.5 2 ms
I
IN
VH1, VL1, VH2, VL2, VT1, VT2, Input Current
l
±20 nA
t
UOTO
UV/OV Time-Out-Period C
TMR
= TMR Open
C
TMR
= 1nF
l
5
0.5
10 20
ms
ms
I
TMR
TMR Current
l
±2.5 µA
Three State Pins DS, PS
V
DS,PS(H,TH)
PS, DS Input High Threshold
l
V
CC
– 0.4 V
CC
– 0.1 V
V
DS,PS(H,TL)
PS, DS Input Low Threshold
l
0.1 0.4 V
I
DS,PS(IN,HL)
PS, DS High, Low Input Current DS, PS at 0V or V
CC
l
±4 µA
I
DS,PS(IN,Z)
Allowable Leakage Current
l
±1 µA
Digital Outputs
V
OH
High Level Output Voltage,
TO1, TO2, UV, OV
I = –0.5A
l
V
CC
– 1.2 V
V
OL
Low Level Output Voltage,
TO1, TO2, UV, OV
I = 3mA
l
0.4 V