LTC3770_15 Datasheet, PDF (5/24 Pages) Linear Technology – Fast No RSENSE Step-Down Synchronous Controller with Margining, Tracking and PLL

TYPICAL PERFORMANCE CHARACTERISTICS
LTC3770
On-Time vs Temperature
300
I_ION = 30μA
V_VON = 0V
250
200
150
100
50
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3770 G04
Maximum Current Sense
Threshold vs V_RNG Voltage
300
250
200
150
100
50
0
0.5 0.75 1.0 1.25 1.5 1.75 2.0
V_RNG VOLTAGE (V)
3770 G05
Maximum Current Sense
Threshold vs Temperature
150
V_RNG = 1V
140
130
120
110
100
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3770 G06
Error Amplifier g_m vs Temperature
1.6
1.4
1.2
1.0
0.8
0.6
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3770 G07
Input Current vs Input Voltage
2.5
2.0
1.5
1.0
0.5
0
05
10 15 20 25 30 35
INPUT VOLTAGE (V)
3770 G08
INTV_CC Load Regulation
0
–0.1
–0.2
–0.3
–0.4
0
10
20
30
40
INTV_CC LOAD CURRENT (mA)
50
3770 G10
FCB Pin Current vs Temperature
0
–0.25
–0.50
–0.75
–1.00
–1.25
–1.50
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3770 G11
Shutdown Current vs Input Voltage
60
50
40
30
20
10
0
0 5 10 15 20 25 30 35
INPUT VOLTAGE (V)
3770 G09
Undervoltage Lockout Threshold
vs Temperature
4.0
3.5
3.0
2.5
2.0
–50 –25
0 25 50 75
TEMPERATURE (C)
100 125
3770 G12
3770fc
5