MAX16920 Просмотр технического описания (PDF) - Maxim Integrated
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MAX16920
Maxim Integrated
MAX16920 Datasheet PDF : 20 Pages
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MAX16920
Automotive Power-Management IC with
Three Step-Down Converters and Linear Regulator
Typical Operating Characteristics (continued)
(VINA = VINB = 14V, TA = +25°C, unless otherwise noted. Data measured on MAX16920B, see Figure 5 for application circuit.)
ODRV SWITCH ON/OFF
SB_OUT IS THE “DRAIN” SIDE OF THE
EXTERNAL pMOS CONNECTED AT ODRV
MAX16920 toc15
VIN_
10V/div
0V VODRV
10V/div
10V/div
0V
VSB_OUT
(100kΩ
LOAD AT
SB_OUT)
100ms/div
DC-DC1 EFFICIENCY vs. LOAD CURRENT
100
90
VIN = 8V
80
70
60
VIN = 14V VIN = 18V
50
40
30
20
10
EN2 = EN3 = ENA = GND
0
0.1
1
10
100
1000
IOUT1 (mA)
DC-DC2 EFFICIENCY vs. LOAD CURRENT
100
90
80
70
VIN = 8V
60
VIN = 14V
VIN = 18V
50
40
30
20
10
0
60
EN3 = ENA = GND
120 180 240 300 360 420 480 540 600
IOUT2 (mA)
DC-DC3 EFFICIENCY vs. LOAD CURRENT
100
90
80
70 VIN = 8V
60
50
VIN = 14V
VIN = 18V
40
30
20
10
EN2 = ENA = GND
0
0.15 0.30 0.45 0.60 0.75 0.90 1.05 1.20 1.35 1.50
IOUT3 (A)
DC-DC1 STARTUP INTO FULL LOAD
MAX16920 toc19
10V/div
VIN
2V/div
VOUT1
100mA/div
2V/div
IOUT1
VPOR
2ms/div
DC-DC2 STARTUP INTO FULL LOAD
MAX16920 toc20
5V/div
VEN2
2V/div
200mA/div
5V/div
VOUT2
IOUT2
VPG2
1ms/div
DC-DC3 STARTUP INTO FULL LOAD
MAX16920 toc21
5V/div
2V/div
1A/div
5V/div
VEN3
VOUT3
IOUT3
VPG3
1ms/div
5V/div
LDOA STARTUP INTO FULL LOAD
MAX16920 toc22
VENA
VOUTA
2V/div
IOUTA
50mA/div
5V/div
VPGA
100µs/div
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