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MAX16974 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part No. MAX16974
Description  High-Voltage, 2.2MHz, 2A Automotive Step- Down Converter with Low Operating Current
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX16974 Datasheet(HTML) 4 Page - Maxim Integrated Products

 
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High-Voltage, 2.2MHz, 2A Automotive Step-
Down Converter with Low Operating Current
4_ _ _______________________________________________________________________________________
Typical Operating Characteristics
(VSUP = VSUPSW = 14V, VOUT = 5V, FSYNC = GND, fOSC = 400kHz, TA = +25NC, unless otherwise noted. See Figure 1.)
Note_2: Guaranteed by design; not production tested.
ELECTRICAL_CHARACTERISTICS_(continued)
(VSUP = VSUPSW = 14V, L1 = 4.7FH, VEN = 14V, CIN = 10FF, COUT = 22FF, CBIAS = 1FF, CBST = 0.1FF, CCRES = 1nF, RFOSC =
12.1kI, TA = TJ = -40NC to +125NC, unless otherwise noted. Typical values are at TA = +25NC.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
CRES Source Current
ICRES
VOUT in regulation
9.5
10
10.5
F
A
CRES Pulldown Current
ICRES_PD VOUT out of regulation
1
mA
RES Sink Current
VRES pulls low, VRES > 0.4V
1
mA
RES Leakage Current (Open-
Drain Output)
VOUT in regulation, TA = +25NC
1
F
A
Reset Debounce Time
tRES_DEB VRESETI falling
25
F
s
EFFICIENCY vs. ILOAD
(SKIP MODE)
ILOAD (C)
0.01
0.001
0.0001
10
20
30
40
50
60
70
80
90
100
0
0.00001
0.1
VSUP = 14V
5V/400kHz
5V/2.2MHz
EFFICIENCY vs. ILOAD
ILOAD (A)
1
0.1
10
20
30
40
50
60
70
80
90
100
0
0.01
10
VSUP = 14V
5V/400kHz
5V/2.2MHz
SUPPLY CURRENT vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
26
24
20 22
10 12 14 16 18
8
10
20
30
40
50
60
70
80
90
100
0
6
28
5V/400kHz
5V/2.2MHz
SHUTDOWN CURRENT
vs. INPUT VOLTAGE
INPUT VOLTAGE (V)
26
24
20 22
8 10 12 14 16 18
6
1
2
3
4
5
6
7
8
9
10
11
12
13
14
0
4
28
TA = -40°C
TA = +25°C
TA = +125°C
STARTUP INTO HEAVY LOAD
MAX16974 toc05
0V
2A/div
SF = 400kHz
5V/div
5V/div
0A
0V
VSUP
VOUT
ILOAD
10ms/div


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