Datasheet

Maxim Integrated │ 6
www.maximintegrated.com
MAX17502 60V, 1A, Ultra-Small, High-Efciency,
Synchronous Step-Down DC-DC Converter
Typical Operating Characteristics (continued)
(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.)
FEEDBACK VOLTAGE
vs. TEMPERATURE
MAX17502 toc10
TEMPERATURE (°C)
FEEDBACK VOLTAGE (V)
100 120806040200-20
0.89
0.90
0.91
0.92
0.88
-40
PEAK AND RUNAWAY CURRENT LIMIT
vs. TEMPERATURE
MAX17502 toc11
TEMPERATURE (°C)
CURRENT LIMIT (A)
100 120806040200-20
1.7
1.6
1.5
1.8
1.9
2.0
1.4
-40
PEAK
CURRENT
LIMIT
RUNAWAY
CURRENT
LIMIT
SWITCHING FREQUENCY
vs. TEMPERATURE
MAX17502 toc12
TEMPERATURE (°C)
SWITCHING FREQUENCY (kHz)
100 120806040200-20
400
300
500
600
700
200
-40
SOFT-START/SHUTDOWN FROM EN/UVLO
(MAX17502E)
MAX17502 toc13
1ms/div
EN/UVLO
2V/div
V
OUT
1V/div
I
OUT
500mA/div
RESET
2V/div
SOFT-START/SHUTDOWN FROM EN/UVLO
(MAX17502F)
MAX17502 toc14
1ms/div
EN/UVLO
2V/div
V
OUT
2V/div
I
OUT
500mA/div
RESET
5V/div
FULL-LOAD SOFT-START FROM V
IN
(MAX17502E)
MAX17502 toc15
400µs/div
V
IN
20V/div
V
OUT
1V/div
I
OUT
500mA/div
RESET
2V/div
FULL-LOAD SOFT-START FROM V
IN
(MAX17502F)
MAX17502 toc16
400µs/div
V
IN
20V/div
V
OUT
2V/div
I
OUT
500mA/div
RESET
5V/div