Datasheet

Automotive Power-Management IC with
Three Step-Down Converters and Linear Regulator
MAX16920
5
ELECTRICAL CHARACTERISTICS (continued)
(V
INA
= V
INB
= 14V, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 2)
Note 2: Operation at voltages outside the 5.5V to 18V range is guaranteed, but some parameters may be out of specification.
Note 3: Not production tested.
Note 4: The MAX16920BATJ/V+ with spread-spectrum disabled has a typical switching frequency of 2.2MHz, while the
MAX16920BATJS/V+ is centered at 2.025MHz typically.
Typical Operating Characteristics
(V
INA
= V
INB
= 14V, T
A
= +25°C, unless otherwise noted. Data measured on MAX16920B, see Figure 5 for application circuit.)
DC-DC2 LINE REGULATION
MAX16920 toc06
V
IN_
(V)
V
OUT2
(V)
24208 12 164 28
I
OUT2
= 400mA
4.85
4.90
4.95
5.00
5.05
5.10
5.15
5.20
4.80
DC-DC2 OUTPUT VOLTAGE
vs. TEMPERATURE
MAX16920 toc05
TEMPERATURE (°C)
V
OUT2
(V)
11095-25 -10 5 35 50 6520 80
4.85
4.90
4.95
5.00
5.05
5.10
5.15
5.20
4.80
-40 125
I
OUT2
= 400mA
MAX16920 toc04
I
OUT1
200ms/div
V
OUT1
(AC-COUPLED)
DC-DC1 LOAD REGULATION
(15mA TO 150mA TO 15mA)
200mA/div
50mV/div
DC-DC1 LINE REGULATION
MAX16920 toc03
V
IN_
(V)
V
OUT1
(V)
24208 12 16
3.15
3.20
3.25
3.30
3.35
3.40
3.45
3.50
3.10
4 28
I
OUT1
= 150mA
DC-DC1 OUTPUT VOLTAGE
vs. TEMPERATURE
MAX16920 toc02
TEMPERATURE (°C)
V
OUT1
(V)
11095-25 -10 5 35 50 6520 80
3.15
3.20
3.25
3.30
3.35
3.40
3.45
3.50
3.10
-40 125
I
OUT1
= 100mA
DC-DC1 SKIP MODE OPERATION
(I
OUT1
= 100mA)
MAX16920 toc01
V
LX1
V
OUT1
1µs/div
2V/div
10V/div
100mA/div
0V
MAX16920A
0V
0A
I
OUT1
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
EN2, EN3, ENA, SYNC Input Low
Voltage
V
IL
0.4 V
EN2, EN3, ENA, SYNC Input High
Voltage
V
IH
1.7 V
EN2, EN3, ENA, SYNC Input
Hysteresis
V
H
200 mV
SYNC Input Pulldown Resistor RSYNC 100 200 360
kI