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MP8843 Datasheet(PDF) 3 Page - Monolithic Power Systems

Part # MP8843
Description  6V, 3A, Synchronous, Step-Down Switcher with I2C Interface
PDF  22 Pages
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Manufacturer  MPS [Monolithic Power Systems]
Direct Link  http://www.monolithicpower.com
Logo MPS - Monolithic Power Systems

MP8843 Datasheet(HTML) 3 Page - Monolithic Power Systems

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MP8843 – 6V, 3A, SYNCHRONOUS, STEP-DOWN SWITCHER WITH I
2C INTERFACE
MP8843 Rev. 1.0
www.MonolithicPower.com
3
7/15/2016
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2016 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VIN = 3.6V, TJ = -40°C to +125°C. Typical value is tested at TJ = 25°C, unless otherwise
noted.
Parameter
Symbol
Condition
Min
Typ
Max
Units
Input voltage range
VIN
2.6
6
V
Quiescent current
IQ
VEN = 1.8V, no switching,
PFM mode
60
μA
Io = 0A, switching,
PWM mode
(5)
7
mA
Shutdown current
IS
VEN = GND, TJ = 25°C
1
μA
Internal reference voltage
VREF
TJ = 25°C
0.594
0.6
0.606
V
VREF
0.591
0.6
0.609
V
Lowest output voltage
VLOW
Register = 00h, TJ = 25°C
0.594
0.6
0.606
V
Highest output voltage
VHIGH
Register = 7Fh, TJ = 25°C
1.089
1.1
1.111
V
Output voltage step
VSTEP
3.9
mV
High-side switch on resistance
RHSON
55
mΩ
Low-side switch on resistance
RLSON
35
mΩ
UVLO rising threshold
VUVLOR
2.35
2.55
V
UVLO hysteresis
VUVLOHY
170
mV
VIN over-voltage
VOVP
6.3
V
VIN over-voltage hysteresis
VOVPHY
250
mV
Switching frequency
fSW
1
2
MHz
Minimum on time
(5)
τMINON
50
ns
Minimum off time
τMINOFF
90
ns
Switch leakage
ISW
VEN = 0V, VIN = 6V,
VSW = 0V or 6V, TJ = 25°C
1
2
μA
EN logic high
VENL
1.2
V
EN logic low
VENH
0.4
V
EN input current
IEN
VEN = 2V
2
μA
PG rising threshold
VPGH
VOUT refer to I
2C setting target
voltage,
VOUT from 80% to 100%
85
%VTARGET
PG falling threshold
VPGFTH
VOUT refer to I
2C setting target
voltage,
VOUT from 100% to 120%
115
%VTARGET
PG hysteresis
VPGHY
20
mV
PG pull-down voltage
VPGL
Isink = 2mA
0.4
V
PG delay
τPGd
PG_DELAY = 0
30
μs
τPGd
PG_DELAY = 1
17
ms
High-side switch peak current
limit (source)
(5)
Ipeak
3.6
4.8
6
A
Low-side switch valley current
limit (source)
(5)
Ivalley
3.6
A



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