LTC3704 Datasheet, PDF (4/28 Pages) Linear Technology – Wide Input Range, No RSENSE Positive-to-Negative DC/DC Controller

LTC3704
TYPICAL PERFOR A CE CHARACTERISTICS
NFB Voltage vs Temp
–1.25
–1.24
–1.23
–1.22
–1.21
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3704 G01
Shutdown Mode I_Q vs V_IN
30
20
10
0
0
10
20
30
40
V_IN (V)
3704 G04
Burst Mode I_Q vs Temperature
500
400
300
200
100
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3704 G07
NFB Voltage Line Regulation
–1.231
–1.230
–1.229
0 5 10 15 20 25 30 35
V_IN (V)
3704 G02
Shutdown Mode I_Q vs Temperature
20
V_IN = 5V
15
10
5
0
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
3704 G05
Dynamic I_Q vs Frequency
18
C_L = 3300pF
16 ^IQ(TOT) ^{= 550µA + Qg • f}
14
12
10
8
6
4
2
0
0 200 400 600 800 1000 1200
FREQUENCY (kHz)
3704 G08
NFB Pin Current vs Temperature
8.0
7.9
7.8
7.7
7.6
7.5
7.4
7.3
7.2
7.1
7.0
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
3704 G03
Burst Mode I_Q vs V_IN
600
500
400
300
200
100
0
0
10
20
30
40
V_IN (V)
3704 G06
Gate Drive Rise and Fall Time
vs C_L
60
50
40
RISE TIME
30
20
FALL TIME
10
0
0 2000 4000 6000 8000 10000 12000
C_L (pF)
3704 G09
4
sn3704 3704fs