Datasheet

LT6650
5
6650fa
Minimum Input-Output Voltage
Differential (Sinking)
Output Short-Circuit Current vs
Input Voltage
Output Short-Circuit Current vs
Input Voltage
FB Pin Current vs FB Pin Voltage FB Pin Current vs FB Pin Voltage Gain and Phase vs Frequency
Output Noise 0.1Hz to 10Hz Output Voltage Noise Spectrum Integrated Noise 10Hz to 1kHz
OUTPUT CURRENT(µA)
10 100 1000
INPUT-OUTPUT VOLTAGE (mV)
0
–400
–300
–200
–100
–500
6650 G10
V
OUT
= 1.425V - TYP (RF = 100k, RG = 39.2k)
0.1% V
OUT
125°C
–55°C
25°C
INPUT VOLTAGE (V)
0
OUTPUT CURRENT (mA)
6
8
14
12
10
16
6650 G11
4
2
4
8
12
20
14
2
6
10
18
OUTPUT SHORTED TO GND
125°C
–55°C
25°C
INPUT VOLTAGE (V)
0
OUTPUT CURRENT (mA)
6
8
14
12
10
16
6650 G12
4
2
4
8
12
20
14
2
6
10
18
OUTPUT SHORTED TO V
IN
125°C
25°C
–55°C
FB PIN VOLTAGE (V)
–0.6
–10
FB PIN CURRENT (nA)
0
2
4
6
–0.2 0.2
0.6
1.0
6650 G13
8
–2
–4
–6
–8
10
–0.4 0
0.4
0.8
125°C
V
FB
≠ V
OUT
CURRENT IS POSITIVE WHEN
IT ENTERS THE DEVICE
–55°C
25°C
FB PIN VOLTAGE (V)
13 795151311 17 19
FB PIN CURRENT (nA)
10
1
0.1
0.01
6650 G14
125°C
V
FB
≠ V
OUT
CURRENT IS POSITIVE WHEN
IT ENTERS THE DEVICE
–55°C
25°C
FREQUENCY (kHz)
GAIN (dB)
120
100
80
60
40
20
00
–20
–40
PHASE (DEG)
120
100
80
60
40
20
–20
–40
0.01 1 10 100
6650 G15
0.1
T
A
= 25°C
UNITY GAIN
R
L
= 2k
C
L
= 1µF
GAIN
PHASE
TIME (s)
0
OUTPUT NOISE (5µV/DIV)
8
6650 G16
2
4
6
10
7
1
3
5
9
V
IN
= 5V
FREQUENCY (Hz)
10
NOISE LEVEL (µV/√Hz)
20
100 1k 10k
6650 G17
V
IN
= 5V
C
L
= 1µF
I
OUT
= –40µA
I
OUT
= 0µA
0
5
10
15
I
OUT
= –200µA
FREQUENCY (Hz)
10
1
INTEGRATED NOISE (µV
RMS
)
10
100
100 1k
6650 G18
V
IN
= 5V
C
L
= 1µF
I
OUT
= –200µA
TYPICAL PERFOR A CE CHARACTERISTICS
UW
(See Applications, Figure 1)