Datasheet

AD5757 Data Sheet
Rev. D | Page 18 of 44
–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
09225-170
Figure 30. Output Current vs. Time with DC-to-DC Converter (See Figure 56)
8
7
6
5
4
3
2
1
0
0
5 10 15 20
HEADROOM VOLTAGE (V)
CURRENT (mA)
0mA TO 24mA RANGE
1kΩ LOAD
f
SW
= 410kHz
INDUCTOR = 10µH (XAL4040-103)
T
A
= 25°C
09225-067
Figure 31. DC-to-DC Converter Headroom vs. Output Current (See Figure 56)
0
–120
–100
–80
–60
–40
–20
10
100 1k 10k 100k 1M
10M
I
OUT_x
PSRR (dB)
FREQUENCY (Hz)
AV
DD
= 15V
V
BOOST
= 15V
T
A
= 25°C
09225-068
Figure 32. I
OUT_x
PSRR vs. Frequency