LT1964 查看數據表（PDF） - Linear Technology
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LT1964 Datasheet PDF : 12 Pages
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LT1964
TYPICAL PERFOR A CE CHARACTERISTICS
Input Ripple Rejection
60
VIN = VOUT(NOMINAL) – 1V +
58
0.5VP-P RIPPLE AT f = 120Hz
IL = –200mA
56
54
52
50
48
46
44
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1964 G19
Load Regulation
30
IL = –1mA TO –200mA
25
20
LT1964-5
15
10
5
LT1964-BYP, LT1964-SD
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
1964 G22
RMS Output Noise vs Load
Current
140
COUT = 10µF
120
LT1964-5
100
80
LT1964-BYP,
CBYP = 0
LT1964-SD
60
40
20
0
–0.01
LT1964-5
LT1964-BYP
CBYP = 0.01µF
–0.1 –1 –10 –100 –1k
LOAD CURRENT (mA)
1964 G25
6
LT1964-BYP
Minimum Input Voltage
–3.0
–2.5
–2.0
IL = –200mA
–1.5
IL = –1mA
–1.0
NOTE: THE MINIMUM INPUT VOLTAGE
ACCOUNTS FOR THE OPERATING
–0.5 THRESHOLD OF THE SHDN PIN WHICH
IS TIED TO THE IN PIN INTERNALLY
0
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
1964 G20
Output Noise Spectral Density
10
CBYP = 1000pF CBYP = 100pF
1
CBYP = 0
0.1
CBYP = 0.01µF
COUT = 10µF
IL = 200mA
LT1964-5
LT1964-BYP
0.01
10
100
1k
10k
100k
FREQUENCY (Hz)
1964 G23
LT1964-5, 10Hz to 100kHz Output
Noise, CBYP = 0
COUT = 10µF
ILOAD = – 200mA
1ms/DIV
1964 G26.tif
LT1964-SD
Minimum Input Voltage
–3.0
–2.5
–2.0
IL = –200mA
–1.5
IL = –1mA
–1.0
NOTE: THE SHDN PIN THRESHOLD
–0.5 MUST BE MET TO ENSURE
DEVICE OPERATION
0
–50 –25
0 25 50 75 100 125
TEMPERATURE (°C)
1964 G21
RMS Output Noise vs Bypass
Capacitor
140
COUT = 10µF
120
IL = –200mA
f = 10Hz TO 100kHz
LT1964-5
100
80
60
40
LT1964-BYP
20
0
10
100
1k
CBYP (pF)
10k
1964 G24
LT1964-5, 10Hz to 100kHz Output
Noise, CBYP = 100pF
COUT = 10µF
ILOAD = – 200mA
1ms/DIV
1964 G27.tif
1964f
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