LTC3882-1
6
Rev A
For more information
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
Input Voltage Supervisor
V
ON_TOL
Input ON/OFF Threshold Error
15V ≤ V
IN_ON
≤ 35V
l
–2
2
%
N
VON
Input ON/OFF Threshold Resolution
143
mV
Output Voltage Supervisors
V
UVOV_R0
Range 0 Maximum Threshold
Range 0 Error
Range 0 Threshold Resolution
Range 0 Threshold Hysteresis
2V ≤ V
OUT
≤ 5V (Falling for UV and Rising for OV)
l
–1
5.5
11
1
54
V
%
mV
mV
V
UVOV_R1
Range 1 Maximum Threshold
Range 1 Error
Range 1 Threshold Resolution
Range 1 Threshold Hysteresis
1V ≤ V
OUT
≤ 2.5V (Falling for UV and Rising for OV)
l
–1
2.75
5.5
1
27
V
%
mV
mV
Output Current Supervisors
V
ILIM_TOL
Output Current Limit Tolerance
I
SENSE
+
– I
SENSE
–
15mV < I
SENSE
+
– I
SENSE
–
≤ 30mV
30mV < I
SENSE
+
– I
SENSE
–
≤ 50mV
50mV < I
SENSE
+
– I
SENSE
–
≤ 70mV
l
l
l
–1.7
–2.5
–5.2
1.7
2.5
5.2
mV
mV
mV
N
lLIM
I
SENSE
+
– I
SENSE
–
Threshold
Resolution
1LSB
0.4
mV
ADC Readback Telemetry (Note 8)
N
VIN
VINSNS Readback Resolution
(Note 9)
10
Bits
V
IN_TUE
VINSNS Total Unadjusted Readback Error 4.5V ≤ VINSNS ≤ 38V
l
0.5
2
%
%
N
DC
PWM Duty Cycle Resolution
(Note 9)
10
Bits
DC
TUE
PWM Duty Cycle Total Unadjusted
Readback Error
PWM Duty Cycle = 12.5%
–2
2
%
N
VOUT
V
OUT
Readback Resolution
244
µV
V
OUT_TUE
V
OUT
Total Unadjusted Readback Error
0.6V ≤ V
OUT
≤ 5.5V, Constant Load
l
–0.5
±0.2
0.5
%
%
N
ISENSE
I
OUT
Readback Resolution
LSB Step Size (at I
SENSE
±
)
(Note 9)
0mV ≤ |I
SENSE
+
– I
SENSE
–
| < 16mV
16mV ≤ |I
SENSE
+
– I
SENSE
–
| < 32mV
32mV ≤ |I
SENSE
+
– I
SENSE
–
| < 63.9mV
63.9mV ≤ |I
SENSE
+
– I
SENSE
–
| ≤ 70mV
10
15.625
31.25
62.5
125
Bits
µV
µV
µV
µV
I
SENSE_TUE
I
OUT
Total Unadjusted Readback Error
|I
SENSE
+
– I
SENSE
–
| ≥ 6mV, 0V ≤ V
OUT
≤ 5.5V
l
–1
1
%
I
SENSE_OS
I
OUT
Zero-Code Offset Voltage
±32
µV
N
TEMP
Temperature Resolution
0.25
°C
T
EXT_TUE
External Temperature Total Unadjusted
Readback Error
TSNS0, TSNS1 ≤ 1.85V (Note 10)
MFR_PWM_MODE_LTC3882-1[6] = 0
MFR_PWM_MODE_LTC3882-1[6] = 1
l
l
–3
–7
3
7
°C
°C
T
INT_TUE
Internal Temperature Total Unadjusted
Readback Error
Internal Diode (Note 10)
±1
°C
t
CONVERT
Update Rate
(Note 11)
90
ms
Internal EEPROM (Notes 4, 6)
Endurance
Number of Write Operations
0°C ≤ T
J
≤ 85°C During All Write Operations
10,000
Cycles
Retention
Stored Data Retention
T
J
≤ 125°C
10
Years
Mass Write Time STORE_USER_ALL Execution Duration
0°C ≤ T
J
≤ 85°C During All Write Operations
0.2
2
s
The
l
denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T
J
= 25°C (Note 2). V
CC
= 5V, V
SENSE0
+
= V
SENSE1
+
= 1.8V, V
SENSE0
–
=
V
SENSE1
–
= I
AVG_GND
= GND = 0V, f
SYNC
= 500kHz (externally driven) unless otherwise specified.
