MIC7401
Configurable Power Management Device for
Low-Power FPGA, ASICs, and Processors
Features
• Input Voltage: 2.4V to 5.5V
• Five Independent Synchronous Bucks up to 3A
• One Independent Non-Synchronous Boost
200 mA
• 200 µA Quiescent Current (All Regulators On)
• 5 µA Typical Shutdown Current
• 93% Peak Buck Efficiency, 85% Typical Efficiency
at 1 mA
• Dual Power Modes: Standby and Normal Mode
• I
2
C Interface up to 3.4 MHz
• I
2
C On-the-Fly EEPROM Programmability,
Featuring:
- Buck and Boost Output Voltage Scaling
- Power-on-Reset Threshold and Delay
- Power-Up Sequencing/Sequencing Delay
- Buck and Boost Current-Limit
- Buck and Boost Pull-Down when Disabled
- Individual ON, OFF, and Standby Modes
- Soft-Start and Global Power Good Masking
• 23 µA Buck Typical Quiescent Current
• 70 µA Boost Typical Quiescent Current
• 1.5% Output Accuracy over
Temperature/Line/Load
• 2.0 MHz Boost Switching Frequency
• 1.3 MHz Buck Operation in Continuous Mode
• Ultra-Fast Buck Transient Response
• 12 mm x 8.55 mm x 1.25 mm Solution Size (Top
Layer)
• Thermal Shutdown and Current-Limit Protection
• 36-Pin 4.5 mm x 4.5 mm x 0.85 mm FQFN
Package (0.4 mm Pitch)
• –40°C to +125°C Junction Temperature Range
General Description
The MIC7401 is a powerful, highly-integrated,
configurable, power-management IC (PMIC) featuring
five synchronous buck regulators, one boost regulator,
and high-speed I
2
C interface with an internal
EEPROM.
The device offers two distinct modes of operation,
Standby mode and Normal mode, intended to provide
an energy optimized solution suitable for portable
hand-held and infotainment applications.
In Normal mode, the programmable switching
converters can be configured to support a variety of
features, including start-up sequencing, timing,
soft-start ramp, output voltage levels, current-limit
levels, and output discharge for each channel.
In Standby mode, the PMIC can be configured in a low
power state by either disabling an output or by
changing the output voltage to a lower level.
Independent exit from Standby mode can be achieved
either by I
2
C communication or the external STBY pin.
The device has five synchronous buck regulators with
high-speed adaptive on-time control supporting even
the challenging ultra-fast transient requirement for core
supplies. The one boost regulator provides a Flash
memory programming supply that delivers up to
200 mA of output current. The boost is equipped with
an output disconnect switch that opens if a
short-to-ground fault is detected.
An internal EEPROM enables a single-chip solution
across many platforms by allowing the designer to
customize the PMIC for their design. Modifications can
be made without the need to re-approve a new PMIC,
saving valuable design resources and time.
All switchers provide light-load efficiency with
HyperLight Load
®
mode for buck and PFM mode for
boost. An additional benefit of this proprietary
architecture is very low output ripple voltage throughout
the entire load range with the use of small output
capacitors. The MIC7401 is designed for use with small
inductors (down to 0.47 µH for buck, 1.5 µH for boost),
and an output capacitor as small as 10 µF for buck,
enabling a total solution size of 12 mm × 8.5 mm and
less than 1 mm height on top layer.
Applications
•
•
•
•
•
Point-of-Sale (POS)
Servers
Network Systems
3D Glasses
Infotainment
2018 Microchip Technology Inc.
DS20005618A-page 1
MIC7401
1.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings †
Supply Voltages (PV
IN[1-6]
)........................................................................................................................... –0.3V to +6V
Analog Supply Voltage (AV
IN
) ...................................................................................................................... –0.3V to +6V
Buck Output Voltages (V
OUT[1-5]
) ................................................................................................................. –0.3V to +6V
Boost Output Voltage (V
OUT6
).................................................................................................................... –0.3V to +20V
Buck Switch Voltages (V
SW[1-5]
)................................................................................................................... –0.3V to +6V
Boost Switch Voltage (V
SW6
) ..................................................................................................................... –0.3V to +20V
Power Good Voltage (V
PG
) ......................................................................................................................... –0.3V to AV
IN
Power-On Reset Output (V
POR
) ................................................................................................................... –0.3V to +6V
Enable Voltage (V
EN
) ................................................................................................................................... –0.3V to +6V
Standby Voltage (V
STBY
).............................................................................................................................. –0.3V to +6V
I
2
C IO (V
SDA
, V
SCL
)..................................................................................................................................... –0.3V to AV
IN
AGND to PGND[1-6] ................................................................................................................................. –0.3V to +0.3V
ESD Rating (Note
1).......................................................................................................................HBM:
2 kV; MM: 200V
Operating Ratings ‡
Input Voltage (PV
IN[1-6]
) ............................................................................................................................ +2.4V to +5.5V
Analog Input Voltage (AV
IN
) ...................................................................................................................... +2.4V to +5.5V
Buck Output Voltage Range (V
OUT[1-5]
) .................................................................................................... +0.8V to +3.3V
Boost Output Voltage Range (V
OUT6
) ........................................................................................................... +7V to +14V
Power Good Voltage (V
PG
) .............................................................................................................................. 0V to AV
IN
Power-On Reset Output (V
POR
) ....................................................................................................................... 0V to AV
IN
POR Threshold Voltage (V
VSLT
)....................................................................................................................... 0V to AV
IN
Standby Voltage (V
STBY
).................................................................................................................................. 0V to AV
IN
I
2
C IO (V
SDA
, V
SCL
).......................................................................................................................................... 0V to AV
IN
† Notice:
Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of the device at those or any other conditions above those indicated
in the operational sections of this specification is not intended. Exposure to maximum rating conditions for extended
periods may affect device reliability. Specifications are for packaged product only.
‡ Notice:
The device is not guaranteed to function outside its operating ratings.
Note 1:
Devices are ESD sensitive. Handling precautions are recommended. Human body model, 1.5 kΩ in series
with 100 pF.
DS20005618A-page 4
2018 Microchip Technology Inc.
MIC7401
TABLE 1-1:
ELECTRICAL CHARACTERISTICS
Electrical Characteristics:
V
IN
= AV
IN
= PV
IN(1-6)
= 5.0V; V
OUT1
= 1.8V; V
OUT2
= 1.1V; V
OUT3
= 1.8V; V
OUT4
=
1.05V; V
OUT5
= 1.25V; V
OUT6
= 12V. T
A
= +25°C, unless otherwise noted.
Bold
values indicate –40°C
≤
T
J
≤
+125°C.
Note 1
Parameter
Input Supply (V
IN
)
Input Voltage Range (AV
IN
, PV
IN[1-6]
)
Operating Quiescent Current into AV
IN
(Note
2, Note 3)
Operating Quiescent Current into PV
IN
(Note
2)
Shutdown Current into (PV
IN
+ AV
IN
)
Undervoltage Lockout Threshold
Undervoltage Lockout Hysteresis
Standby Input (STBY)
Logic Level High
Logic Level Low
Bias Current into Pin
Bias Current out of Pin
Rising/Falling Edge Reset Deglitch
Enable Input (EN)
Logic Level High
Logic Level Low
Bias Current Into Pin
Bias Current Out of Pin
Power-On-Reset (POR) Comparator
POR Upper Comparator Range
POR Lower Comparator Range
Power Reset Output (POR) and Timer
POR Delay
POR Deglitch Delay
POR Output Low Voltage
POR Leakage Current
Global Power Good Output (PG)
Buck Power Good Threshold Voltage
Buck Hysteresis (Note
4)
Boost Power Good Threshold Voltage
Boost Hysteresis (Note
4)
Power Good Output Low Voltage
Power Good Leakage Current
Power Good Deglitch Delay
Output Sequencing Delay (Note
4)
Thermal Protection
Thermal Shutdown
Thermal Hysteresis
—
—
160
20
—
—
°C
°C
T
J
Rising
—
87
—
87
—
—
—
—
0.96
91
4
91
380
75
0.01
100
1
95
—
95
—
400
200
—
1.04
%V
OUT
%V
OUT
%V
OUT
mV
mV
nA
µs
ms
V
OUT[1-5]
Rising
V
OUT[1-5]
Falling
V
OUT[6]
Rising
V
OUT[6]
Falling
I
PG
= 10 mA (sinking)
V
PG
= 5.5V
V
OUT[1-6]
Falling
—
18
—
—
—
20
50
75
—
22
—
400
200
ms
µs
mV
nA
—
AV
IN
Falling
I
POR
= 10 mA (sinking)
V
POR
= 5.5V
2.646
2.548
2.7
2.6
2.754
2.652
V
V
AV
IN
Rising
AV
IN
Falling
1.2
—
—
—
—
—
—
—
—
0.4
200
200
V
V
nA
nA
V
EN
Rising, Regulator Enabled
V
EN
Falling, Regulator Shutdown
V
VSLT
= V
IN
V
VSLT
= 0V
1.2
—
—
—
—
—
—
—
—
100
—
0.4
200
200
—
V
V
nA
nA
µs
—
—
V
STBY
= V
IN
V
STBY
= 0V
—
2.4
—
—
—
2.15
—
—
200
0.3
5
2.25
150
5.5
240
1.0
—
2.35
—
V
µA
µA
µA
V
mV
—
V
IN
= 5.0V; I
OUT
= 0A
V
IN
= 5.0V; I
OUT
= 0A
V
IN
= 5.0V; V
EN
= 0V
AV
IN
Rising
—
Min.
Typ.
Max.
Units
Conditions
2018 Microchip Technology Inc.
DS20005618A-page 5
DSP and ARM Processors
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