LTC3773 Datasheet, PDF (9/32 Pages) Linear Technology – Triple Output Synchronous 3-Phase DC/DC Controller with Up/Down Tracking

TYPICAL PERFORMANCE CHARACTERISTICS
LTC3773
V_CC Undervoltage Reset Voltage
vs Temperature
4.4
4.3
4.2
POWER UP
4.1
4.0
SHUTDOWN
3.9
3.8
3.7
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3773 G24
TRACK and SDB Pull-Up Current
vs Temperature
1.2
I_TRACK
0.9
0.6
I_SDB2
0.3
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3773 G25
PGOOD Delay vs Temperature
180
170
160
150
PGOOD ↑
140
130
PGOOD ↓
120
110
100
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3773 G26
SDB2 Threshold Voltage
vs Temperature
2
V_CC = 5V
CHANNEL 2 ENABLE
1.5
CHANNEL 2 DISABLE
PLLIN/FC, PHASEMD, PLLFLTR,
Threshold Voltage vs Temperature
3.3
V_CC = 5V
2.9 _{HIGH THRESHOLD}
2.5
2.1
1.7 ^{FLOATING THRESHOLD}
1.3
0.9 LOW THRESHOLD
0.5
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
3773 G27
1
SDB2 SHUTDOWN
0.5
0
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
3773 G28
3773fb
9