Datasheet

Data Sheet AD5757
Rev. D | Page 17 of 44
0
5
10
15
20
25
30
OUTPUT CURRENT (mA)
–0.50 –0.25 0 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00
TIME (ms)
0mA TO 24mA RANGE
1kΩ LOAD
f
SW
= 410kHz
INDUCTOR = 10µH (XAL4040-103)
AV
CC
= 5V
T
A
= 25°C
I
OUT
V
BOOST
09225-167
Figure 26. Output Current and V
BOOST_x
Settling Time with DC-to-DC
Converter (See Figure 56)
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)
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
09225-168
Figure 27. Output Current Settling with DC-to-DC Converter vs. Time and
Temperature (See Figure 56)
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)
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
09225-169
Figure 28. Output Current Settling with DC-to-DC Converter vs. Time and
AV
CC
(See Figure 56)
0
5
10
15
20
25
–5
50
10
15
20
TOTAL UNADJUSTED ERROR (%FSR)
TIME (µs)
09225-189
I
OUT
(4mA TO 20mA STEP)
I
OUT
(20mA TO 4mA STEP)
T
A
= 25°C
EXTERNAL PMOS (NTLJS4149)
4mA TO 20mA RANGE
R
LOAD
= 300Ω
V
BOOST_X
= 24V
Figure 29. Output Current Settling Time with External PMOS Transistor