Datasheet

Data Sheet AD5755-1
Rev. E | Page 23 of 52
0
5
10
15
20
25
30
OUTPUT CURRENT (mA)
–0.25 0 0.25 0.50 0.75 1.00 1.25 1.50 1.75
TIME (ms)
09226-168
I
OUT
, T
A
= –40°C
I
OUT
, T
A
= +25°C
I
OUT
, T
A
= +105°C
0mA TO 24mA RANGE
1kΩ LOAD
f
SW
= 410kHz
INDUCTOR = 10µH (XAL4040-103)
AV
CC
= 5V
Figure 50. Output Current Settling with DC-to-DC Converter vs. Time and
Temperature (See Figure 80)
0
5
10
15
20
25
30
OUTPUT CURRENT (mA)
–0.25 0 0.25 0.50 0.75 1.00 1.25 1.50 1.75
TIME (ms)
09226-169
I
OUT
, AV
CC
= 4.5V
I
OUT
, AV
CC
= 5.0V
I
OUT
, AV
CC
= 5.5V
0mA TO 24mA RANGE
1kΩ LOAD
f
SW
= 410kHz
INDUCTOR = 10µH (XAL4040-103)
T
A
= 25°C
Figure 51. Output Current Settling with DC-to-DC Converter vs. Time and
AV
CC
(See Figure 80)
–10
–8
–6
–4
–2
0
2
4
6
8
10
0 2 4 6 8 10 12 14
CURRENT (AC COUPLED) (µA)
TIME (µs)
AV
CC
= 5V
f
SW
= 410kHz
INDUCTOR = 10µH (XAL4040-103)
0mA TO 24mA RANGE
1kΩ LOAD
EXTERNAL R
SET
T
A
= 25°C
20mA OUTPUT
10mA OUTPUT
09226-170
Figure 52. Output Current vs. Time with DC-to-DC Converter (See Figure 80)
8
7
6
5
4
3
2
1
0
0 5 10 15 20
HEADROOM VOLTAGE (V)
CURRENT (mA)
09226-067
0mA TO 24mA RANGE
1kΩ LOAD
F
SW
= 410kHz
INDUCTOR = 10µH (XAL4040-103)
T
A
= 25°C
Figure 53. DC-to-DC Converter Headroom vs. Output Current (See Figure 80)
0
–120
–100
–80
–60
–40
–20
10 100 1k 10k 100k 1M 10M
I
OUT_x
PSRR (dB)
FREQUENCY (Hz)
09226-068
AV
DD
= +15V
V
BOOST
= +15V
AV
SS
= –15V
T
A
= 25°C
Figure 54. I
OUT_x
PSRR vs. Frequency