Datasheet

Maxim Integrated │ 5
www.maximintegrated.com
MAX17501 60V, 500mA, Ultra-Small, High-Efciency,
Synchronous Step-Down DC-DC Converter
Typical Operating Characteristics
(V
IN
= 24V, V
GND
= V
PGND
= 0V, C
VIN
= C
VCC
=1μF,V
EN
= 1.5V, C
SS
= 3300pF, V
FB
= 0.98 x V
OUT
, LX = unconnected, RESET =
unconnected, T
A
= T
J
= -40°C to +125°C, unless otherwise noted. Typical values are at T
A
=+25°C.AllvoltagesarereferencedtoGND,
unless otherwise noted.)
EFFICIENCY vs. LOAD CURRENT
(MAX17501A)
LOAD CURRENT (mA)
EFFICIENCY (%)
10010
40
50
60
70
80
90
100
30
1
V
IN
= 12V
V
IN
= 24V
V
IN
= 36V
MAX17501 toc01
EFFICIENCY vs. LOAD CURRENT
(MAX17501B)
LOAD CURRENT (mA)
EFFICIENCY (%)
10010
40
50
60
70
80
90
100
30
1
V
IN
= 12V
V
IN
= 24V
V
IN
= 36V
V
IN
= 48V
MAX17501 toc02
EFFICIENCY vs. LOAD CURRENT
(MAX17501E)
LOAD CURRENT (mA)
EFFICIENCY (%)
450400300 350150 200 250100
50
55
60
65
70
75
80
85
90
95
45
50 500
V
IN
= 36VV
IN
= 24V
V
IN
= 12V
MAX17501 toc03
EFFICIENCY vs. LOAD CURRENT
(MAX17501F)
LOAD CURRENT (mA)
EFFICIENCY (%)
450400300 350150 200 250100
50
60
70
80
90
100
40
50 500
V
IN
= 48V
V
IN
= 12V
V
IN
= 36V
V
IN
= 24V
MAX17501 toc04
OUTPUT VOLTAGE vs. LOAD CURRENT
(MAX17501A)
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
45040035030025020015010050
3.30
3.35
3.40
3.45
3.25
0 500
V
IN
= 36V
V
IN
= 24V
V
IN
= 12V
MAX17501 toc05
OUTPUT VOLTAGE vs. LOAD CURRENT
(MAX17501B)
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
45040035030025020015010050
4.95
5.15
5.10
5.05
5.00
5.20
4.90
0 500
V
IN
= 12V
V
IN
= 24V
V
IN
= 36V
V
IN
= 48V
MAX17501 toc06
OUTPUT VOLTAGE vs. LOAD CURRENT
(MAX17501E)
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
450400350300250200150100500 500
3.295
3.300
3.305
3.310
3.315
3.320
3.290
V
IN
= 24V
V
IN
= 12V
V
IN
= 36V
MAX17501 toc07
OUTPUT VOLTAGE vs. LOAD CURRENT
(MAX17501F)
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
450400350300250200150100500 500
4.97
4.96
4.98
4.99
5.00
5.01
5.03
5.02
5.04
5.05
4.95
V
IN
= 48V V
IN
= 36V V
IN
= 24V V
IN
= 12V
MAX17501 toc08
SHUTDOWN CURRENT
vs. TEMPERATURE
MAX17501 toc09
TEMPERATURE (°C)
SHUTDOWN CURRENT (µA)
100120806040200-20
0.75
0.80
0.85
0.90
0.95
1.00
1.05
1.10
0.70
-40