Datasheet

LTC3880/LTC3880-1
8
3880fc
For more information www.linear.com/LTC3880
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
RUN0,1
= 3.3V, f
SYNC
= 500kHz (externally
driven) unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
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
θSYNC-θ0
SYNC to Ch0 Phase Relationship Based on
the Falling Edge of Sync and Rising Edge of
TG0
MFR_PWM_CONFIG_LTC3880[2:0] = 0, 2, 3
MFR_PWM_CONFIG_LTC3880[2:0] = 5
MFR_PWM_CONFIG_LTC3880[2:0] = 1
MFR_PWM_CONFIG_LTC3880[2:0] = 4, 6
0
60
90
120
Deg
Deg
Deg
Deg
θSYNC-
θ1
SYNC to Ch1 Phase Relationship Based on
the Falling Edge of Sync and Rising Edge of
TG1
MFR_PWM_CONFIG_LTC3880[2:0] = 3
MFR_PWM_CONFIG_LTC3880[2:0] = 0
MFR_PWM_CONFIG_LTC3880[2:0] = 2, 4, 5
MFR_PWM_CONFIG_LTC3880[2:0] = 1
MFR_PWM_CONFIG_LTC3880[2:0] = 6
120
180
240
270
300
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
< T
JMAX
l
10 Years
Mass_Write Mass Write Operation Time STORE_USER_ALL, 0°C < TJ < 85°C During
EEPROM Write Operations
l
440 4100 ms
Digital Inputs SCL, SDA, RUN0, RUN1, GPIO0, GPIO1
V
IH
Input High Threshold Voltage SCL, SDA, RUN0, RUN1, GPIO0, GPIO1
l
2.0 V
V
IL
Input Low Threshold Voltage SCL, SDA, RUN0, RUN1, GPIO0, GPIO1
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, GPIO0, GPIO1, ALERT, RUN0, RUN1, SHARE_CLK
V
OL
Output Low Voltage I
SINK
= 3mA
l
0.4 V
Digital Inputs SHARE_CLK, WP
V
IH
Input High Threshold Voltage
l
1.5 1.8 V
V
IL
Input Low Threshold Voltage
l
0.6 1 V
Leakage Current SDA, SCL, ALERT, RUN0, RUN1
I
OL
Input Leakage Current 0V ≤ V
PIN
≤ 5.5V
l
±5 µA
Leakage Current GPIO0, GPIO1
I
GL
Input Leakage Current 0V ≤ V
PIN
< 3.6V
l
±2 µA