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MAX20745 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part # MAX20745
Description  Integrated, Step-Down Switching Regulator
PDF  26 Pages
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Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX20745 Datasheet(HTML) 4 Page - Maxim Integrated Products

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PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
OUTPUT-VOLTAGE PROTECTION (OVP)
Overvoltage-Protection Rising
Threshold
OVP
Relative to programmed VOUT
9.5
13
16.5
%
OVP Deglitch Filter Time
8
µs
Power Good Protection Falling
Threshold
PWRGD
Relative to programmed VOUT
6
9
12
%
Power Good Protection Rising
Threshold
3
6
9
%
Power Good Deglitch Filter Time
8
µs
OVERCURRENT PROTECTION (OCP)
Positive OCP Inception
Threshold (Inductor Valley
Current)
OCP
Selected by
R_SEL3
(Notes 5, 7, 8, 9)
Setting 0
9.3
13.0
16.7
A
Setting 1
11.8
16.6
21.3
Setting 2
15.1
20.1
25.0
Setting 3
18.1
23.6
29.1
Hysteresis of Positive OCP
20
%
Negative OCP Inception
Threshold (Inductor Valley
Current)
Selected by
R_SEL3
Setting 0
-19
A
Setting 1
-23
Setting 2
-26
Setting 3
-30
Hysteresis of Negative OCP
0
%
OVERTEMPERATURE PROTECTION (OTP)
OTP Inception Threshold
OTP
Selectable by PGM2 pin using R_SEL2
(Notes 7, 8, 9)
120
130
140
°C
140
150
160
Hysteresis
10
°C
OE MAXIMUM VOLTAGE
OE Max Voltage
OE
3.6
V
Rising Threshold
Measured at OE pin (Note 5)
0.83
0.9
0.97
V
Hysteresis
0.2
OE Pin Input Resistance
200
275
350
kΩ
OE Deglitch Filter Time
(Note 9)
0.9
2.2
µs
STARTUP TIMING
Enable Time from OE Rise to
Start of BST Charge
tOE
After tINIT
16
µs
Soft-Start Ramp Time
tSS
Set by R_SEL1 (Note 7)
1.5
ms
3
ms
BST Charging Time
tBST
8
µs
(Circuit of Figure 6, VDDH = 4.5V to 16V, unless otherwise specified. Typical values are at TA = +32°C. All devices 100% tested at room
temperature. Limits over temperature guaranteed by design.)
MAX20745
Integrated, Step-Down Switching Regulator
www.maximintegrated.com
Maxim Integrated │ 4
Electrical Characteristics (continued)



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