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MAX20008 数据表(PDF) 3 Page - Maxim Integrated Products

部件名 MAX20008
功能描述  36V, 220kHz to 2.2MHz, 4A/6A/8A Fully Integrated Automotive Step-Down Converters
PDF  20 Pages
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制造商  MAXIM [Maxim Integrated Products]
网页  https://www.maximintegrated.com/en.html
标志 MAXIM - Maxim Integrated Products

MAX20008 数据表(HTML) 3 Page - Maxim Integrated Products

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(VSUP = VSUPSW = VEN = 14V. TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C under normal
conditions, unless otherwise noted.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
BIAS Undervoltage
Lockout
VUVBIAS
VBIAS falling
2.5
2.9
V
Thermal-Shutdown
Temperature
TSHDN
TJ rising
175
°C
Thermal-Shutdown
Hysteresis
THYST
15
°C
OUTPUT VOLTAGE
PWM-Mode Output
Voltage (Note 3)
VOUT_5V
VSUP = VSUPSW = 6V to 28V
4.9
5
5.1
V
Skip-Mode Output Voltage
(Note 4)
VSKIP_5V
Skip mode, no load, FB = BIAS
4.9
5
5.15
V
PWM-Mode Output
Voltage
VOUT_3.3V VSUP = VSUPSW = 6V to 28V
3.23
3.3
3.37
V
Skip-Mode Output Voltage
(Note 4)
VSKIP_3.3V Skip mode, no load, FB = BIAS
3.23
3.3
3.4
V
Load Regulation
LNREG
VFB = VBIAS, 30mA < ILOAD < 6A, PWM mode,
5V
0.6
%
Line Regulation
LDREG
VFB = VBIAS, 6V < VSUPSW < 36V, PWM mode
0.02
%/V
BST Input Current
IBST_ON
High-side MOSFET on, VBST - VLX = 5V
1.5
mA
BST Input Current
IBST_OFF
High-side MOSFET off, VBST - VLX = 5V
0.1
µA
LX Current Limit
ILX
MAX20004 (4A)
5.25
7
8.75
A
MAX20006 (6A)
7.5
10
12.5
MAX20008 (8A)
10.5
14
17.5
LX Rise Time (Note 4)
tLX_TR
2
ns
Spread Spectrum
SS
Spread spectrum enabled
±3
%
High-Side Switch
On-Resistance
RHS
VBIAS = 5V, ILX = 2A
38
76
mΩ
High-Side Switch Leakage
IHS_LKG
High-side MOSFET off, VSUPSW = 36V,
VLX = 0V, TA = +25°C
1
5
µA
Low-Side Switch
On-Resistance
RLS
VBIAS = 5V, ILX = 2A
18
36
mΩ
Low-Side Switch Leakage
ILS_LKG
Low-side MOSFET off, VSUPSW = 36V,
VLX = 36V, TA = +25°C
1
5
µA
FB Input Current
IFB
TA = +25°C
30
100
nA
FB Regulation Voltage
VFB
FB connected to an external resistive divider,
6V < VSUPSW < 36V
0.99
1.00
1.01
V
Transconductance
(from FB to COMP)
gm
VFB = 1V, VBIAS = 5V
500
780
1000
µS
Minimum On-Time
(Note 4)
tON_MIN
Load 500mA (Note 4)
75
ns
MAX20004/MAX20006/
MAX20008
36V, 220kHz to 2.2MHz, 4A/6A/8A
Fully Integrated Automotive
Step-Down Converters
www.maximintegrated.com
Maxim Integrated │ 3
Electrical Characteristics (continued)



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