Datasheet

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