LTC1705 Datasheet, PDF (4/28 Pages) Linear Technology – Dual 550kHz Synchronous Switching Regulator Controller with 5-Bit VID and 150mA LDO

LTC1705
TYPICAL PERFOR A CE CHARACTERISTICS
V_SENSEC vs Temperature
1.315
1.310
V_CC = 5V
V_OUT = 1.3V
1.305
1.300
1.295
1.290
1.285
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1705 G01
V_SENSEC Load Regulation
0.8
0.05
T_A = 25°C
V_OUT = 1.6V
0
0
–0.8
–0.05
–1.6
–0.10
–2.4
–0.15
–3.2
0
3
6
9
I_LOAD (A)
V_FBIO vs Temperature
0.810
V_CC = 5V
0.806
–0.20
12
15
1705 G03
0.802
0.798
0.794
0.790
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1705 G05
V_SENSEC Line Regulation
1.30
1.04 ^TA ^{= 25°C}
0.78
0.52
0.26
0
–0.26
–0.52
–0.78
–1.04
–1.30
3 3.5 4 4.5 5
V_CC (V)
0.10
0.08
0.06
0.04
0.02
0
–0.02
–0.04
–0.06
–0.08
–0.10
5.5 6
1705 G02
Core Supply Efficiency
100
V_OUT = 2V
90
V_OUT = 1.6V
80
V_OUT = 0.9V
70
60
V_IN = 5V, T_A = 25°C, I/O DISABLED
QTC = QBC = 2× FDS6670A
50
0
3
6
9
12
15
I_LOAD (A)
1705 G04
V_FBIO Line Regulation
0.80
0.64 ^TA ^{= 25°C}
0.48
0.32
0.16
0
–0.16
–0.32
–0.48
–0.64
–0.80
3 3.5 4 4.5 5
V_CC (V)
0.10
0.08
0.06
0.04
0.02
0
–0.02
–0.04
–0.06
–0.08
–0.10
5.5 6
1705 G06
4