LTC3526LEDC 查看數據表（PDF） - Linear Technology
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LTC3526LEDC Datasheet PDF : 16 Pages
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LTC3526L/LTC3526LB
TYPICAL PERFORMANCE CHARACTERISTICS
VFB vs Temperature
0.50
NORMALIZED TO 25°C
0.25
0
–0.25
–0.50
–0.75
–1.00
–60 –40 –20 0 20 40 60 80 100
TEMPERATURE (°C)
3526 G13
Fixed Frequency Switching
Waveform and VOUT Ripple
Start-Up Voltage vs Temperature
0.80
0.75
1mA LOAD
0.70
0.65
NO LOAD
0.60
0.55
0.50
–50
25 0 25 50
TEMPERATURE (°C)
75 100
3526 G14
Burst Mode Waveforms
(LTC3526L)
Burst Mode Quiesent Current
vs VOUT (LTC3526L)
10.0
9.5
9.0
8.5
8.0
7.5
7.0
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VOUT (V)
3526 G15
VOUT and IIN During Soft-Start
SW PIN
2V/DIV
VOUT
10mV/DIV
AC COUPLED
VIN = 1.2V
500ns/DIV
VOUT = 3.3V AT 100mA
COUT = 10μF
3526 G16
SW PIN
2V/DIV
VOUT
20mV/DIV
AC COUPLED
INDUCTOR
CURRENT
0.2A/DIV
VIN = 1.2V
VOUT = 3.3V
COUT = 10μF
10μs/DIV
VOUT
1V/DIV
3526 G17
INPUT
CURRENT
0.2A/DIV
SHDN PIN
1V/DIV
VOUT = 3.3V
COUT = 10μF
200μs/DIV
3526 G18
Load Step Response (from Burst
Mode Operation) (LTC3526L)
VOUT
100mV/DIV
AC COUPLED
LOAD
CURRENT
50mA/DIV
VIN = 3.6V
100μs/DIV
VOUT = 5V
20mA TO 170mA STEP
COUT = 10μF
3526 G19
Load Step Response
(Fixed Frequency)
VOUT
100mV/DIV
AC COUPLED
LOAD
CURRENT
50mA/DIV
VIN = 3.6V
100μs/DIV
VOUT = 5V
50mA TO 150mA STEP
COUT = 10μF
3526 G20
3526lfb
5
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