MAX16920 Datasheet, PDF (4/20 Pages) Maxim Integrated Products – Automotive Power-Management IC with Three Step-Down Converters and Linear Regulator

Automotive Power-Management IC with
Three Step-Down Converters and Linear Regulator
ELECTRICAL CHARACTERISTICS (continued)
(VINA = VINB = 14V, TA = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
DC-DC1 (0 to 150mA)
MIN
TYP MAX
1
DC-DC Load Regulation
LoREG DC-DC2 (0 to 600mA)
1.5
DC-DC3 (0 to 1.5A)
2.5
DC-DC1, VINA, VINB = 6V to 18V,
I_OUT1 = 15mA
3
DC-DC Line Regulation
LiREG
DC-DC2, VINA, VINB = 6V to 18V,
I_OUT2 = 60mA
5
DC-DC3, VINA, VINB = 6V to 18V,
I_OUT3 = 150mA
3
MAX16920A
8.5
10
11.5
Soft-Start Time
Spread-spectrum
t_SS
disabled
MAX16920B
Spread-spectrum
enabled
6.5
7.5
8.5
6.75
8
9.25
Duty-Cycle Range (Note 3)
DCR
MAX16920A
MAX16920B
3
97
11
96
MAX16920A, limited by minimum
Input Voltage to Maintain
duty cycle, DC-DC2 and DC-DC3
18
Constant Switching with
V_{OUT_} = 1.22V
VINDCL
only
MAX16920B, limited by minimum
(Note 3)
duty cycle, DC-DC2 and DC-DC3
8
only
Spread-Spectrum Range
SS
Spread-spectrum option only
10
LINEAR REGULATOR (LDO)
Output Voltage
VOUTA
Output in regulation, IOUTA < 100mA,
V_INA = 6V to 18V
4.85
5
5.15
Operating Current
ICCA
No load (excludes DC-DC_ operating
current)
100
Power-Good Threshold
PGTA Output rising
88.5
91.5 94.5
Power-Good Threshold Hysteresis PGTAH
2
Output Current Limit
ILIMA
200
300
Dropout Voltage
VDA
VINA = 5V, ILDOA = 100mA (Note 3)
0.5
Load Regulation
DI
IOUTA = 5mA to 100mA
30
Line Regulation
DV
VINA = 6V to 18V, IOUTA = 50mA
0.05
LOGIC LEVELS
POR, PG_, OT, and UVO Output
Voltage Low
V_OL
Sink current = 1mA
0.4
UNITS
%
mV/V
ms
%
V
%
V
FA
% of
V_OUTA
(nom)
%
mA
V
mV
mV/V
V
4