Datasheet

Maxim Integrated │ 5
www.maximintegrated.com
MAX17502 60V, 1A, Ultra-Small, High-Efciency,
Synchronous Step-Down DC-DC Converter
Typical Operating Characteristics
(V
IN
= 24V, V
GND
= V
PGND
= 0V, C
VIN
=2.2μF,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 refer-
encedtoGND,unlessotherwisenoted.)
MAX17502E
EFFICIENCY vs. LOAD CURRENT
LOAD CURRENT (mA)
EFFICIENCY (%)
900800600 700300 400 500200
60
70
80
90
100
100 1000
V
IN
= 36V
V
IN
= 24V
V
IN
= 12V
MAX17502 toc01
MAX17502F
EFFICIENCY vs. LOAD CURRENT
LOAD CURRENT (mA)
EFFICIENCY (%)
900800600 700300 400 500200
60
70
80
90
100
50
100 1000
V
IN
= 12V
V
IN
= 24V
V
IN
= 36V
V
IN
= 48V
MAX17502 toc02
MAX17502E
LOAD AND LINE REGULATION
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
3.285
3.290
3.295
3.300
3.305
3.310
3.280
V
IN
= 24V
V
IN
= 12V
V
IN
= 36V
9008007006005004003002001000 1000
MAX17502 toc03
MAX17502F
LOAD AND LINE REGULATION
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)
900800600 700200 300 400 500100
4.96
4.97
4.98
4.99
5.00
5.01
5.02
5.03
5.04
5.05
4.95
0 1000
V
IN
= 12V
V
IN
= 24V
V
IN
= 36V
V
IN
= 48V
MAX17502 toc04
SHUTDOWN CURRENT
vs. TEMPERATURE
MAX17502 toc05
TEMPERATURE (°C)
SHUTDOWN CURRENT (µA)
100 120806040200-20
0.75
0.80
0.85
0.90
0.95
1.00
1.05
1.10
0.70
-40
NO-LOAD SWITCHING CURRENT
vs. TEMPERATURE
MAX17502 toc06
TEMPERATURE (°C)
NO-LOAD SWITCHING CURRENT (mA)
100 120806040200-20
4.85
4.90
4.95
5.00
4.80
-40
EN/UVLO THRESHOLD
vs. TEMPERATURE
MAX17502 toc07
TEMPERATURE (°C)
EN/UVLO THRESHOLD VOLTAGE (V)
100 120806040200-20
1.13
1.14
1.16
1.18
1.20
1.23
1.22
1.21
1.19
1.17
1.15
1.12
-40
RISING
THRESHOLD
FALLING
THRESHOLD
OUTPUT VOLTAGE
vs. TEMPERATURE (MAX17502E)
MAX17502 toc08
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
100 120806040200-20
3.275
3.300
3.325
3.350
3.250
-40
OUTPUT VOLTAGE
vs. TEMPERATURE (MAX17502F)
MAX17502 toc09
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
100 120806040200-20
4.975
5.000
5.025
5.050
4.950
-40