LT3495B-1_15 Datasheet, PDF (6/16 Pages) Linear Technology – 650mA/350mA Micropower Low Noise Boost Converter with Output Disconnect

LT3495/LT3495B/
LT3495-1/LT3495B-1
TYPICAL PERFORMANCE CHARACTERISTICS ^TA ^{= 25°C unless otherwise noted.}
Line Regulation
0.30
0.25
0.20
0.15
0.10
0.05
0
0
4
8
12
16
V_CC VOLTAGE (V)
3495 G19
Output Disconnect PMOS Current
vs CAP to V_OUT Voltage Difference
600
500
400
AFTER START-UP
300
200
IN START-UP
100
IN SHUTDOWN
0
–100
0
2
4
6
8 10 12
CAP TO V_OUT VOLTAGE DIFFERENCE (V)
3495 G20
LT3495 Start-Up Waveforms
SHDN VOLTAGE
5V/DIV
INDUCTOR CURRENT
500mA/DIV
CAP VOLTAGE
5V/DIV
V_OUT VOLTAGE
5V/DIV
50µs/DIV
V_CC = 3.6V
V_OUT = 16V
FIGURE 7 CIRCUIT
3495 G21
LT3495 Transient Response
20mA → 60mA → 20mA LOAD PULSE
V_OUT VOLTAGE
200mV/DIV
AC COUPLED
INDUCTOR CURRENT
500mA/DIV
LT3495-1 Transient Response
10mA → 30mA → 10mA LOAD PULSE
V_OUT VOLTAGE
200mV/DIV
AC COUPLED
INDUCTOR CURRENT
200mA/DIV
LOAD CURRENT
20mA/DIV
20µs/DIV
V_CC = 3.6V
V_OUT = 16V
FIGURE 7 CIRCUIT
6
3495 G22
LOAD CURRENT
20mA/DIV
20µs/DIV
V_CC = 3.6V
V_OUT = 16V
FIGURE 9 CIRCUIT
3495 G23
3495b1b1fa