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MPQ4485 Datasheet(PDF) 5 Page - Monolithic Power Systems

Part # MPQ4485
Description  36V, 6A, Step-Down Converter with Dual USB Charging Ports Supporting Type-C 5V 3A DFP Mode and BC1.2 CDP Mode for Automotive, AEC-Q100 Qualified
PDF  22 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MPQ4485 Datasheet(HTML) 5 Page - Monolithic Power Systems

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MPQ4485
– STEP-DOWN CONVERTER WITH DUAL USB CHARGING PORTS
MPQ4485 Rev.1.0
www.MonolithicPower.com
5
9/18/2017
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2017 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 12V, VEN = 5V, CC1 to ground with 5.1kΩ resistor, TJ = -40°C to +125°C (6), typical value is
tested at TJ = +25°C, unless otherwise noted.
Parameter
Symbol
Condition
Min
Typ
Max
Units
Supply current (shutdown)
IIN
VEN = 0V
13
18
μA
Supply current (quiescent)
IQ
No switching
1
mA
EN rising threshold
VEN_Rising
-3%
1.235
+3%
V
EN hysteresis
VEN_HYS
230
mV
EN pull-up current
IEN
4
8
12
μA
Thermal shutdown (7)
TSTD
165
C
Thermal hysteresis (7)
TSTD_HYS
20
C
VCC regulator
VCC
4.3
4.6
4.9
V
VCC load regulation
VCC_LOG
ICC = 50mA
1
3
%
Step-Down Converter
VIN under-voltage lockout
threshold rising
VIN_UVLO
4.6
5
5.4
V
VIN under-voltage lockout
threshold hysteresis
VUVLO_HYS
700
mV
HS switch on resistance
RDSON_HS
18
40
m
Ω
LS switch on resistance
RDSON_LS
15
30
m
Ω
Output voltage
VOUT
TJ = +25°C
-1%
5.17
+1%
V
TJ = -40°C to+125°C
-2%
5.17
+2%
Output over-voltage protection
VOVP_R
5.45
5.85
6.25
V
Output OVP recovery
VOVP_F
5.3
5.7
6.1
V
Output to ground resistance
RFB
TJ = +25°C
100
160
220
k
Ω
Low-side current limit
ILS_LIMIT
-2
A
Switch leakage
SWLKG
VEN = 0V, VSW = 36V or 0V,
TJ = +25°C
1
μA
VEN = 0V, VSW = 36V or 0V,
TJ = -40°C to +125°C
5
High-side current limit
ILIMIT
VOUT = 0V
8
12
16
A
Oscillator frequency
fSW
360
450
540
kHz
Maximum duty cycle
DMAX
FREQ = 450kHz
91
95
99
%
Minimum off time
TOFF_MIN
110
ns
Minimum on time (7)
TON_MIN
130
ns
Soft-start time
tSS
Output from 10% to 90%
1
2
3.4
ms
USB Switch
Under-voltage lockout
threshold rising
VUSB_UVR
3.7
4
4.3
V
Under-voltage lockout
threshold hysteresis
VUSB_UVHYS
200
mV
Switch on resistance
RDSON_SW
18
35
m
Ω
Output discharge resistance
RDIS_USB
USB disabled, apply 5V voltage
on USB output
250
500
750
kΩ



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