Datasheet

6 Maxim Integrated
High-Efficiency, 4A, Step-Down DC-DC
Regulators with Internal Power Switches
MAX15066/MAX15166
Typical Operating Characteristics (continued)
(V
IN
= 12V, V
OUT
= 1.8V, C
VDD
= 1FF, C
IN
= 22FF, C
OUT
= 47FF, T
A
= +25NC (Figure 1, MAX15066), unless otherwise noted.)
SHUTDOWN WAVEFORM
MAX15066 toc17
V
EN
10V/div
V
OUT
1V/div
I
LOAD
2A/div
V
PGOOD
5V/div
1ms/div
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
SUPPLY CURRENT (µA)
2.2
2.4
2.6
2.8
3.0
2.0
MAX15066 toc16
TEMPERATURE (°C)
-15 10 35 60-40 85
SHUTDOWN SUPPLY CURRENT
vs. INPUT VOLTAGE
MAX15066 toc15
INPUT VOLTAGE (V)
SUPPLY CURRENT (µA)
14.512.510.58.56.5
1
2
3
4
5
0
4.5 16.5
EN = 0V
INPUT CURRENT vs. INPUT VOLTAGE
(MAX15066)
MAX15066 toc14
INPUT VOLTAGE (V)
INPUT CURRENT (mA)
14.512.510.58.56.5
1.2
1.4
1.6
1.8
2.0
1.0
4.5 16.5
L = 2.2µH
NO LOAD
SWITCHING FREQUENCY
vs. INPUT VOLTAGE (MAX15066)
MAX15066 toc13
INPUT VOLTAGE (V)
FREQUENCY (kHz)
14.512.510.58.56.5
485
495
505
515
525
475
4.5 16.5
T
A
= -40°C
T
A
= +25°C
T
A
= +85°C
1A LOAD
FB SET POINT vs. TEMPERATURE
MAX15066 toc12
TEMPERATURE (°C)
FB (mV)
603510-15
605.2
605.4
605.6
605.8
606.0
606.2
606.4
606.6
606.8
607.0
605.0
-40 85