LTC3261
TYPICAL PERFORMANCE CHARACTERISTICS
(TA = 25°C, CFLY = 1μF, CIN = COUT = 10μF unless otherwise noted)
Voltage Loss (VIN – |VOUT|)
Effective Open-Loop Resistance
vs Supply Voltage
V
OUT Load Transient Burst Mode
vs Output Current
Operation (MODE = H)
(Constant Frequency Mode)
90
80
70
60
50
40
30
20
10
0
3.0
2.5
2.0
1.5
1.0
0.5
0.0
f
f
f
= 50kHz
= 200kHz
= 500kHz
V
= 12V
IN
OSC
OSC
OSC
V
OUT
f
= 200kHz
= 500kHz
OSC
OSC
500mV/DIV
AC-COUPLED
–5mA
f
I
OUT
–50mA
3261 G11
V
OSC
= 12V
2ms/DIV
IN
f
= 500kHz
0
5
10
15
20
25
30
35
0.1
1
10
100
SUPPLY VOLTAGE (V)
OUTPUT CURRENT (mA)
3261 G10
3261 G09
VOUT Transient
(MODE = Low to High)
Average Input Current
vs Output Current
V
OUT Ripple
100
10
1
V
OUT
V
OUT
MODE = L
500mV/DIV
10mV/DIV
AC-COUPLED
AC-COUPLED
MODE = L
V
MODE = H
OUT
200mV/DIV
MODE
MODE = H
AC-COUPLED
3261 G12
3261 G14
V
= 12V
= 500kHz
= –5mA
2ms/DIV
IN
100μs/DIV
V
f
= 12V
OSC
IN
f
I
OSC
OUT
= 500kHz
V
= 15V
IN
0.1
f
I
= 500kHz
= 5mA
OSC
OUT
0.1
1
10
100
OUTPUT CURRENT (mA)
3261 G13
3261f
5
Linear Systems [ Linear Systems ]
