Datasheet

AD5737 Data Sheet
Rev. C | Page 18 of 44
DC-TO-DC CONVERTER
90
85
80
75
70
65
60
55
50
0 2420161284
V
BOOST_x
EFFICIENCY (%)
OUTPUT CURRENT (mA)
0mA TO 24mA RANGE
1kΩ LOAD
EXTERNAL R
SET
f
SW
= 410kHz
INDUCTOR = 10µH (XAL4040-103)
T
A
= 25°C
AV
CC
= 4.5V
AV
CC
= 5V
AV
CC
= 5.5V
10067-016
Figure 32. Efficiency at V
BOOST_x
vs. Output Current (See Figure 55)
90
85
80
75
70
65
60
55
50
–40 10040 60 80200–20
V
BOOST_x
EFFICIENCY (%)
TEMPERATURE (°C)
0mA TO 24mA RANGE
1kΩ LOAD
EXTERNAL R
SET
AV
CC
= 5V
f
SW
= 410kHz
INDUCTOR = 10µH (XAL4040-103)
T
A
= 25°C
20mA OUTPUT
10067-017
Figure 33. Efficiency at V
BOOST_x
vs. Temperature (See Figure 55)
80
70
60
50
40
30
20
0 2420161284
I
OUT_x
EFFICIENCY (%)
OUTPUT CURRENT (mA)
0mA TO 24mA RANGE
1kΩ LOAD
EXTERNAL R
SET
f
SW
= 410kHz
INDUCTOR = 10µH (XAL4040-103)
T
A
= 25°C
AV
CC
= 4.5V
AV
CC
= 5V
AV
CC
= 5.5V
10067-018
Figure 34. Output Efficiency vs. Output Current (See Figure 55)
80
70
60
50
40
30
20
–40 10040 60 80200–20
I
OUT_x
EFFICIENCY (%)
TEMPERATURE (°C)
0mA TO 24mA RANGE
1kΩ LOAD
EXTERNAL R
SET
AV
CC
= 5V
f
SW
= 410kHz
INDUCTOR = 10µH (XAL4040-103)
20mA OUTPUT
10067-019
Figure 35. Output Efficiency vs. Temperature (See Figure 55)
0
0.1
0.2
0.3
0.4
0.5
0.6
–40 –20 0
20 40 60 80 100
SWITCH RESISTANCE (Ω)
TEMPERATURE (°C)
10067-123
Figure 36. Switch Resistance vs. Temperature