Datasheet

MAX17503 4.5V-60V, 2.5A, High-Efciency,
Synchronous Step-Down DC-DC Converter
With Internal Compensation
Maxim Integrated │ 8
www.maximintegrated.com
Typical Operating Characteristics (continued)
(V
IN
= V
EN/UVLO
= 24V, V
PGND
= V
SGND
= 0V, C
VIN
= C
VCC
= 2.2µF, C
BST
= 0.1µF, C
SS
=5600pF,RT=MODE=open.,T
A
= T
J
= -40ºC
to +125ºC, unless otherwise noted. Typical values are at T
A
=+25ºC.AllvoltagesarereferencedtoGND,unlessotherwisenoted.)
5V OUTPUT, PWM MODE (LOAD CURRENT
STEPPED FROM NO-LOAD TO 1A),
FIGURE 4a CIRCUIT
MAX17503 toc24
I
OUT
1A/div
V
OUT
(AC)
100mV/div
40µs/div
MODE = SGND
5V OUTPUT, PFM MODE (LOAD CURRENT
STEPPED FROM 5mA TO 1A),
FIGURE 4a CIRCUIT
MAX17503 toc26
I
OUT
500mA/div
V
OUT
(AC)
100mV/div
2ms/div
MODE = OPEN
5V OUTPUT, DCM MODE (LOAD CURRENT
STEPPED FROM 50mA TO 1A),
FIGURE 4a CIRCUIT
MAX17503 toc28
I
OUT
500mA/div
V
OUT
(AC)
100mV/div
200µs/div
MODE = V
CC
3.3V OUTPUT, PWM MODE (LOAD CURRENT
STEPPED FROM NO-LOAD TO 1A),
FIGURE 4b CIRCUIT
MAX17503 toc25
I
OUT
1A/div
V
OUT
(AC)
50mV/div
40µs/div
MODE = SGND
3.3V OUTPUT, PFM MODE (LOAD CURRENT
STEPPED FROM 5mA TO 1A),
FIGURE 4b CIRCUIT
MAX17503 toc27
I
OUT
500mA/div
V
OUT
(AC)
50mV/div
2ms/div
MODE = OPEN
3.3V OUTPUT, DCM MODE (LOAD CURRENT
STEPPED FROM 50mA TO 1A),
FIGURE 4b CIRCUIT
MAX17503 toc29
I
OUT
500mA/div
V
OUT
(AC)
100mV/div
200µs/div
MODE = V
CC