Datasheet

LTC3883/LTC3883-1
7
3883fa
For more information www.linear.com/LTC3883
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
IN
= 12V, V
RUN
= 3.3V, f
SYNC
= 500kHz (externally
driven) unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Temperature Readback (T0, T1)
T
RES_T
Resolution 0.25 °C
T0_TUE External TSNS TUE V
TSNS
= 72mV (Note 8)
l
±3 °C
TI_TUE Internal TSNS TUE V
RUN
= 0.0V, f
SYNC
= 0kHz (Note 8) ±1 °C
t
CONVERT_T
Update Rate (Note 6) 90 ms
INTV
CC
Regulator
V
INTVCC
Internal V
CC
Voltage No Load (LTC3883 Only) 6V < V
IN
< 24V
l
4.8 5 5.2 V
V
LDO_INT
INTV
CC
Load Regulation (LTC3883 Only) I
CC
= 0mA to 50mA 0.5 ±2 %
V
DD33
Regulator
V
DD33
Internal V
DD33
Voltage 4.5V < V
INTVCC
/V
EXTVCC
l
3.2 3.3 3.4 V
I
LIM
V
DD33
Current Limit V
DD33
= GND, V
IN
= INTV
CC
= 4.5V 100 mA
V
DD33_OV
V
DD33
Overvoltage Threshold 3.5 V
V
DD33_UV
V
DD33
Undervoltage Threshold 3.1 V
V
DD25
Regulator
V
DD25
Internal V
DD25
Voltage
l
2.25 2.5 2.75 V
I
LIM
V
DD25
Current Limit V
DD25
= GND, V
IN
= INTV
CC
= 4.5V 80 mA
Oscillator and Phase-Locked Loop
f
OSC
Oscillator Frequency Accuracy 250kHz < f
SYNC
< 1MHz Measured Falling
Edge-to-Falling Edge of SYNC with
SWITCH_FREQUENCY = 250.0.and 1000.0
l
±7.5 %
V
TH,SYNC
SYNC Input Threshold V
CLKIN
Falling
V
CLKIN
Rising
1
1.5
V
V
V
OL,SYNC
SYNC Low Output Voltage I
LOAD
= 3mA
l
0.2 0.4 V
I
LEAKSYNC
SYNC Leakage Current in Slave Mode 0V ≤ V
PIN
≤ 3.6V ±5 µA
SYNC- SYNC to Channel Phase Relationship Based
on the Falling Edge of Sync and Rising Edge
of TG
MFR_PWM_CONFIG_
LT C 3883[2:0] = 0
MFR_PWM_CONFIG_LT C 3883[2:0] = 1
MFR_PWM_CONFIG_LT C 3883[2:0] = 2
MFR_PWM_CONFIG_LT C 3883[2:0] = 3
MFR_PWM_CONFIG_LT C 3883[2:0] = 4
MFR_PWM_CONFIG_LT C 3883[2:0] = 5
MFR_PWM_CONFIG_LT C 3883[2:0] = 6
MFR_PWM_CONFIG_LT C 3883[2:0] = 7
0
90
180
270
60
120
240
300
Deg
Deg
Deg
Deg
Deg
Deg
Deg
Deg
EEPROM
Characteristics
Endurance
(Note 13) 0°C < T
J
< 85°C During EEPROM Write
Operations
l
10,000 Cycles
Retention (Note 13) T
J
< 125°C
l
10 Years
Mass_Write Mass Write Operation Time STORE_USER_ALL, 0°C < T
J
≤ 85°C
During EEPROM Write Operations
l
440 4100 ms
Digital Inputs SCL, SDA, RUN, GPIO
V
IH
Input High Threshold Voltage SCL, SDA, RUN, GPIO, PGOOD
l
2.0 V
V
IL
Input Low Threshold Voltage SCL, SDA, RUN, GPIO, PGOOD
l
1.4 V
V
HYST
Input Hysteresis SCL, SDA 0.08 V
C
PIN
Input Capacitance 10 pF
Digital Input WP
I
PUWP
Input Pull-Up Current WP 10 µA
Open-Drain Outputs SCL, SDA, GPIO, ALERT, RUN, SHARE_CLK, PGOOD
V
OL
Output Low Voltage I
SINK
= 3mA
l
0.4 V