Datasheet

Maxim Integrated │ 6
www.maximintegrated.com
MAX17501 60V, 500mA, 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
= 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.)
NO-LOAD SWITCHING CURRENT
vs. TEMPERATURE (PFM OPERATION)
MAX17501 toc10
TEMPERATURE (°C)
NO-LOAD SWITCHING CURRENT (µA)
100 120806040200-20
60
80
100
120
140
40
-40
NO-LOAD SWITCHING CURRENT vs. TEMPERATURE
(FORCED-PWM OPERATION)
MAX17501 toc11
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
MAX17501 toc12
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
NO-LOAD OUTPUT VOLTAGE
vs. TEMPERATURE (MAX17501E)
MAX17501 toc13
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
100 120806040200-20
3.275
3.300
3.325
3.350
3.250
-40
NO-LOAD OUTPUT VOLTAGE
vs. TEMPERATURE (MAX17501F)
MAX17501 toc14
TEMPERATURE (°C)
OUTPUT VOLTAGE (V)
100 120806040200-20
4.975
5.000
5.025
5.050
4.950
-40
FEEDBACK VOLTAGE
vs. TEMPERATURE
MAX17501 toc15
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
MAX17501 toc16
TEMPERATURE (°C)
CURRENT LIMIT (A)
100 120806040200-20
0.75
0.70
0.65
0.80
0.85
0.90
0.60
-40
PEAK
CURRENT
LIMIT
RUNAWAY
CURRENT
LIMIT
SWITCHING FREQUENCY
vs. TEMPERATURE
MAX17501 toc17
TEMPERATURE (°C)
SWITCHING FREQUENCY (kHz)
100 120806040200-20
400
300
500
600
700
200
-40
NO-LOAD SOFT-START FROM EN/UVLO
(MAX17501A)
MAX17501 toc18
1ms/div
EN/UVLO
2V/div
V
OUT
1V/div
RESET
2V/div