LT3015 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
LT3015 Datasheet PDF : 26 Pages
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LT3015 Series
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted.
RMS Output Noise
vs Feedforward Capacitor (CFF)
250
IL = –1.5A
225
COUT = 10µF
200
f = 10Hz TO 100kHz
IFB-DIVIDER = 100µA
175
TJ = 25°C
150
125
100
75 VOUT = –1.22V
50
VOUT = –5V
LT3015 10Hz to 100kHz Output
Noise
VOUT
100µV/DIV
25
0
10p 100p 1n
10n 100n 1µ
FEEDFORWARD CAPACITANCE, CFF (F)
3015 G46
COUT = 10µF
VOUT = –1.22V
IL = –1.5A
1ms/DIV
3015 G47
LT3015 10Hz to 100kHz Output
Noise, CFF = 0
VOUT
200µV/DIV
COUT = 10µF
VOUT = –5V
IL = –1.5A
CFF = 0
1ms/DIV
3015 G48
LT3015 10Hz to 100kHz Output
Noise, CFF = 10nF
SHDN Transient Response,
IL = –5mA, CFF = 0
SHDN Transient Response,
IL = –1.5A, CFF = 0
VSHDN
1V/DIV
VSHDN
1V/DIV
VOUT
200µV/DIV
COUT = 10µF
VOUT = –5V
IL = –1.5A
CFF = 10nF
1ms/DIV
VOUT
2V/DIV
RL = 1kΩ
3015 G49
COUT = 10µF
VOUT = –5V
CFF = 0
25ms/DIV
VOUT
2V/DIV
RL = 3.3Ω
3015 G50
COUT = 10µF
VOUT = –5V
CFF = 0
250µs/DIV
3015 G51
SHDN Transient Response,
IL = –1.5A, CFF = 10nF
VSHDN
1V/DIV
Start-Up Time vs CFF
100
IL = –1.5A
IFB-DIVIDER = 100µA
VOUT = –12V
10 TJ = 25°C
VOUT = –15V
1.0
LT3015 Transient Response,
COUT = 10µF
VOUT
100mV/DIV
VOUT
2V/DIV
RL = 3.3Ω
COUT = 10µF
VOUT = –5V
CFF = 10nF
250µs/DIV
12
3015 G52
0.1
0.01
VOUT = –1.22V
VOUT = –5V
VOUT = –3V
0.001
100p
1n
10n
100n
FEEDFORWARD CAPACITOR, CFF (F)
3015 G53
IOUT
1A/DIV
COUT = 10µF
25µs/DIV
VOUT = –1.22V
VIN = –3V
∆IOUT = –50mA TO –1.5A
3015 G54
3015fb
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