MPQ5069
7mΩ Protection Switch with Current Monitor
for Automotive Battery Systems
AEC-Q100 Qualified
DESCRIPTION
FEATURES
The MPQ5069 is a hot-swap protection device
designed to protect circuitry on its output from
transients on its input. It also protects its input
from undesired shorts and transients coming
from its output.
During start-up, the slew rate at the output limits
the inrush current. An external capacitor at the
SS pin controls the slew rate.
The maximum output load is current-limited using
a sense FET topology whereby a low-power
resistor from the ISET pin to ground controls the
magnitude of the current limit. An internal charge
pump drives the gate of the power device,
allowing for a power FET with a very low on
resistance of 7mΩ. The MPQ5069 includes an
IMON option to produce a voltage proportional to
the current through the power device, as set by a
resistor from the IMON pin to ground.
Integrated 7mΩ Power MOSFET
Adjustable Current Limit (5A to 15A)
Output Current Measurement
±10% Current Monitor Accuracy
Fast Response (200ns) for Short Protection
PG Detector and FLTB Indication
PG Asserts Low when VIN = 0V
Damaged MOSFET Detection
External Soft Start
Under-Voltage Lockout
Thermal Protection
Available in a QFN-22 (3mmx5mm) Package
Available in AEC-Q100 Grade 1
APPLICATIONS
The MPQ5069’s fault protections include currentlimit protection, thermal shutdown, and damagedMOSFET detection. Both the current limit and
thermal shutdown offer configurable auto-retry
and latch-off mode. The device also features
under-voltage protection.
Automotive Infotainment
Automotive Clusters
Advanced Driver Assistance Systems
Automotive Systems
All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive.
For MPS green status, please visit the MPS website under Quality
Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are
trademarks of Monolithic Power Systems, Inc. or its subsidiaries.
The MPQ5069 is available in a QFN-22
(3mmx5mm) package and is AEC-Q100 qualified.
TYPICAL APPLICATION
VIN
21-22
VOUT
OUT
1
EN
13-20
VIN
R1
2
COUT
EN
AUTO
MPQ5069
PD
FB
4
12
5V
R3
11
R4
TIMER
PG
CT
5
R2
10
PG
ISET
FLTB
RSET
IMON
SS
6
CSS
9
R5
FAULT
8
IMON
GND
7
CMON
RMON
MPQ5069 Rev. 1.1
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MPQ5069 – 7mΩ PROTECTION SWITCH WITH CURRENT MONITOR
ORDERING INFORMATION
Part Number*
MPQ5069GQV-AEC1–Z
Package
QFN-22 (3mmx5mm)
Top Marking
See Below
MSL Rating**
1
* For Tape & Reel, add suffix –Z (e.g. MPQ5069GQV-AEC1–Z).
** Moisture Sensitivity Level Rating
TOP MARKING
MP: MPS prefix
Y: Year code
W: Week code
5069: First four digits of the part number
LLL: Lot number
PACKAGE REFERENCE
TOP VIEW
EN
1
AUTO
2
N/C
3
TIMER
4
ISET
5
SS
6
VIN
VIN
22
21
20 VOUT
VIN
19 VOUT
VIN
18 VOUT
17 VOUT
VIN
16 VOUT
15 VOUT
VIN
GND
7
IMON
8
FLTB
9
14 VOUT
13 VOUT
VIN
12 PD
10
11
PG
FB
QFN-22 (3mmx5mm)
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MPQ5069 – 7mΩ PROTECTION SWITCH WITH CURRENT MONITOR
PIN FUNCTIONS
Pin #
Name
Description
Enable input. Pull the EN pin above its threshold enable the chip. Pull it below its
threshold to shut down the chip.
Auto-reset enable. Float or pull above 2.5V to enable auto-reset upon fault removal.
Ground for the MPQ5069 to latch off when a fault occurs.
Not connected. Float this pin in application.
1
EN
2
AUTO
3
NC
4
TIMER
5
ISET
6
SS
7
GND
8
IMON
9
FLTB
10
PG
11
FB
12
PD
13–20
21, 22,
exposed
pads
OUT
Output current monitor. Provides a voltage proportional to the current flowing through
the power device. Place a resistor to ground to set the gain. Floating this pin is not
recommended.
Fault bar. This is an open-drain output that drives to ground when an over-current or a
thermal shutdown occurs. Pull up to an external power supply through a 100kΩ resistor.
Power good. This is an open-drain output. Pull up to an external power supply through
a resistor. High = power good. Low indicates output is outside the UVLO window. PG
starts to work when the pull-up supply is enabled, even if VIN and EN are still disabled.
Feedback. An external resistor divider from the output sets the output voltage where
the PG pin switches. The rising threshold is 0.6V, with a 60mV hysteresis.
Output discharge. Connect to the output to provide a 500Ω load to discharge the
output when VIN is below its UVLO threshold or the EN pin is within 0.6V of the rising
threshold. Floating PD disables this function.
Output. The output voltage is controlled by the IC.
VIN
Input power supply.
Timer set. An external capacitor sets the hot-plug insertion time delay, fault timeout
period, and restart time.
Current-limit set. Place a resistor to ground to set the value of the current limit.
Soft start. A connected external capacitor sets the soft-start time of the output voltage.
The internal circuit controls the slew rate of the output voltage during start-up. Float this
pin to set the soft-start time at its minimum of 1ms.
Ground.
MPQ5069 Rev. 1.1
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MPQ5069 – 7mΩ PROTECTION SWITCH WITH CURRENT MONITOR
θJA
θJC
ABSOLUTE MAXIMUM RATINGS (1)
Thermal Resistance
VIN .............................................. -0.3V to +36V
VIN (Max load dump voltage) …………… +39V (2)
OUT, PD ...................................... -0.3V to +30V
All other pins ............................... -0.3V to +6.5V
Continuous power dissipation (TA = 25°C) (3)
….. .. ..........................................................2.7W
Power dissipation (TA = 25°C, 10ms single pulse)
….. ........................................................... 215W
Maximum current (TA = 25°C)……………… 25A
Junction temperature ............................... 150°C
Lead temperature .................................... 260°C
Storage temperature ................ -65°C to +150°C
QFN-22 (3mmx5mm)
JESD51-7 (4)... ........................ 46 ...... 10 ... °C/W
EV5069-QV-00A (5)..................30.........2.... °C/W
Electrostatic Discharge (ESD) Rating
HBM (human body model) ........................ ±2kV
CDM (charged device model) ................. ±750V
Recommended Operating Conditions
Notes:
1) Absolute maximum ratings are rated under room temperature
unless otherwise noted. Exceeding these ratings may
damage the device.
2) Suppressed Load Dump acc. to ISO16750-2 (2012).
3) The maximum allowable power dissipation is a function of the
maximum junction temperature TJ (MAX), the junction-toambient thermal resistance θJA, and the ambient temperature
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD (MAX) = (TJ
(MAX) - TA) / θJA. Exceeding the maximum allowable power
dissipation will cause excessive die temperature, and the
regulator will go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
4) Measured on JESD51-7, 4-layer PCB.
5) Measured on MPS standard EVB, 8.5cmx8.5cm, 2-layer
PCB.
Input voltage operating range ........... 6V to 28V
Operating junction temp (TJ). ... -40°C to +125°C
MPQ5069 Rev. 1.1
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MPQ5069 – 7mΩ PROTECTION SWITCH WITH CURRENT MONITOR
ELECTRICAL CHARACTERISTICS
VIN = 12V, RSET = 10kΩ, COUT = 220μF, TJ = -40°C to +125°C, typical values are at TJ = 25°C, unless
otherwise noted.
Parameters
Supply Current
Quiescent current
Power FET
On resistance
Off-state leakage current
Symbol
IQ
Condition
Min
EN = high, no load
Fault latch-off
EN = 0V, VIN = 12V
RDS(ON)
IOFF
Thermal Shutdown
Shutdown temperature (6)
Hysteresis (6)
Under-Voltage Protection
VUVLO
UVLO hysteresis
AUTO Pin
Low-level input voltage
High-level input voltage
Soft Start
SS pull-up current
Current Limit
Current limit at normal operation
Current monitor accuracy
Current limit response time (6)
Secondary current limit (6)
Short-circuit protection response
time (6)
Timer
Upper threshold voltage
Lower threshold voltage
Fault restart duty cycle
Insertion delay charge current
Fault detection charge current
Fault restart sink current
Discharge RON
VUVLOHYS
VAUTOL
VAUTOH
ISS
ILIMIT_NO
ILIMIT_H
VTMRH
VTMRL
Max
Units
1
0.7
1
2
1.2
10
mA
mA
μA
7
12
mΩ
1
μA
VIN = 28V, EN = 0V,
OUT = 0V, TJ = 25°C
167
28
Auto-retry mode only
Under-voltage lockout threshold
Typ
Rising
Falling
2.7
Latch-off mode
Auto-retry mode
2.5
ISS changes with input
RSET = 10kΩ
6A < IOUT < 10A
ILIMIT = 3A, add a 3Ω load
Any value of RSET
Over-current restart cycles
IINSERT
IFLTD
IFLTS
IOUT < ILIMIT
4.15
3.8
250
°C
°C
5.5
5
V
V
mV
1
V
V
3
6
9
μA
10.5
-10
12.5
14.5
+10
20
25
A
%
μs
A
200
ns
1
0.09
0.1
15
80
0.15
15
1.23
0.20
0.25
40
200
0.5
35
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1.4
0.35
0.5
60
300
0.8
80
V
V
%
μA
μA
μA
Ω
5
MPQ5069 – 7mΩ PROTECTION SWITCH WITH CURRENT MONITOR
ELECTRICAL CHARACTERISTICS (continued)
VIN = 12V, RSET = 10kΩ, COUT = 220μF, TJ = -40°C to +125°C, typical values are at TJ = 25°C, unless
otherwise noted.
Parameters
Enable
Rising threshold
Falling threshold
Hysteresis
FB (Power Good Feedback)
Feedback rising threshold
Feedback falling threshold
Hysteresis
Fault Bar/Power Good
Low-level output voltage
Off-state leakage current
Fault bar propagation delay
Symbol
Min
Typ
Max
Units
VENRS
VENFS
VENHYS
1.4
1.2
1.8
1.6
200
2.2
2
V
V
mV
VFBRS
VFBFS
VFBHYS
0.51
0.45
0.6
0.54
60
0.69
0.63
V
V
mV
0.1
20
0.3
1
40
V
μA
μs
500
800
mV
600
800
mV
VOL
IFLT_LKG
VOL_100
PG low-level output voltage
VOL_10
Condition
1mA sink current
VFLTB = 5V
Pull up ISET from 0V to 1V
VIN = 0V, pull up to 3.3V
through a 100kΩ resistor
VIN = 0V, pull up to 3.3V
through a 10kΩ resistor
5
Note:
6) Derived from bench characterization. Not tested in production.
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MPQ5069 – 7mΩ PROTECTION SWITCH WITH CURRENT MONITOR
TYPICAL CHARACTERISTICS
VIN = 12V, COUT = 220μF, CT = 220nF, RSET = 10kΩ, unless otherwise noted.
MPQ5069 Rev. 1.1
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MPQ5069 – 7mΩ PROTECTION SWITCH WITH CURRENT MONITOR
TYPICAL PERFORMANCE CHARACTERISTICS
Performance waveforms are tested on the evaluation board of the Design Example section on
page 18. VIN = 12V, COUT = 220μF, CT = 220nF, CSS = 10nF, RSET = 10kΩ, TA = 25°C, unless
otherwise noted.
MPQ5069 Rev. 1.1
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MPQ5069 – 7mΩ PROTECTION SWITCH WITH CURRENT MONITOR
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Performance waveforms are tested on the evaluation board of the Design Example section on
page 18. VIN = 12V, COUT = 220μF, CT = 220nF, CSS = 10nF, RSET = 10kΩ, TA = 25°C, unless
otherwise noted.
MPQ5069 Rev. 1.1
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MPQ5069 – 7mΩ PROTECTION SWITCH WITH CURRENT MONITOR
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
Performance waveforms are tested on the evaluation board of the Design Example section on
page 18. VIN = 12V, COUT = 220μF, CT = 220nF, CSS = 10nF, RSET = 10kΩ, TA = 25°C, unless
otherwise noted.
MPQ5069 Rev. 1.1
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MPQ5069 – 7mΩ PROTECTION SWITCH WITH CURRENT MONITOR
FUNCTIONAL BLOCK DIAGRAM
VIN
VCC
Regulator
Charge
Pump
:
1
1
:
4331
4µA
VCC
IMON
OUT
Soft Start
ISET
6.9kΩ
450kΩ
230Ω
300Ω
1.32V
50kΩ
VIN/900 kΩ
Fast-Off Comp
Logic
Current-Limit
Amplifier
SS
615mV
PG
FLTB
UVLO
PD
Control Logic
500Ω
EN
VCC
VCC
VCC
200µA
Thermal
Sense
40µA
8µA
AUTO
TIMER
VREF_TSD
FB
0.5µA
0.6V
GND
Figure 1: Functional Block Diagram
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MPQ5069 – 7mΩ PROTECTION SWITCH WITH CURRENT MONITOR
OPERATION
The MPQ5069 protects circuitry on its output
from transients on its input. It also protects its
input from undesired shorts and transients
coming from its output. It provides an integrated
solution to monitor the input voltage, output
voltage, output current, and die temperature to
eliminate the need for an external current-sense
resistor, power MOSFET, and thermal sense
device.
Current Limit
The MPQ5069 provides a constant current limit
that can be programmed by an external resistor.
Once the device reaches its current limit
threshold, the internal circuit regulates the gate
voltage to hold the current in the MOSFET
constant. In order to limit the current, the gate-tosource voltage needs to drop from 5V to about
1V. The typical response time is about 20µs, and
the output current may have a small overshoot
during this time period.
When the current limit triggers, the fault timer
starts. If the output current falls below the
current-limit threshold before the end of the fault
timeout period, the MPQ5069 resumes normal
operation. If the current limit duration remains
beyond the fault timeout period, the MOSFET
turns off. The subsequent behavior relates to the
AUTO pin configuration. If the temperature
reaches the thermal protection threshold during
the fault timeout period, the MOSFET turns off.
When the AUTO pin is floating, the part functions
in auto-retry mode for over-current protection.
The part enters latch-off mode when the AUTO
pin pulls to ground (once it detects an overcurrent condition) and the duration exceeds the
preset value.
When the device reaches either its current limit
or its over-temperature threshold, the FLTB pin is
driven low with a 20μs propagation delay to
indicate a fault. The desired current limit during
normal operation is a function of the external
current-limit resistor.
Short-Circuit Protection
If the load current increases rapidly due to a
short circuit, the current may significantly exceed
the current-limit threshold before the control loop
can respond. If the current reaches the 25A
secondary current limit level, a fast turn-off circuit
activates to turn off the MOSFET using a 100mA
pull-down gate discharge current (see Figure 2).
This limits the peak current through the switch to
limit the input voltage drop. The total short circuit
response time is about 200ns. The FLTB
switches low once it reaches a 25A current limit,
and asserts low until the circuit resumes normal
operation.
Fault Timer and Restart
When the current reaches its over-current limit
threshold, a 200µA fault timer current source
charges the external capacitor (CT) at the TIMER
pin. If the current-limit state ceases before the
TIMER pin reaches 1.23V, the MPQ5069 returns
to normal operation mode and a low-value
resistor discharges CT after the TIMER voltage
reaches 1.23V. If the current-limit state continues
after the TIMER pin voltage reaches 1.23V, the
MOSFET switches off. The subsequent restart
procedure then depends on the selected retry
configuration.
If the AUTO pin connects to ground or is pulled
low, the MPQ5069 latches off. Restart the input
power or cycle the EN signal to resume
functioning.
Floating the AUTO pin or pulling it above 2.5V
causes the device to operate in hiccup mode
(see Figure 3). At the end of the fault timeout
period, the MOSFET turns off and a low-current
(0.5µA) sink discharges the external capacitor
(CT).
When the TIMER voltage reaches the low
threshold (0.2V), the part restarts. If the fault
condition remains, the fault timeout period and
restart timer repeat.
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MPQ5069 – 7mΩ PROTECTION SWITCH WITH CURRENT MONITOR
Figure 2: Over-Current Protection (Latch-Off Mode, AUTO = Low)
Figure 3: Over-Current Protection (Auto-Retry Mode, AUTO = High)
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MPQ5069 – 7mΩ PROTECTION SWITCH WITH CURRENT MONITOR
Power Good (PG)
Power good (PG) indicates whether the output
voltage is in the normal range relative to the input
voltage. It is the open drain of a MOSFET. Pull
the PG pin up to the external power supply
through a 100kΩ resistor. During start-up, PG’s
output is driven low. This directs the system to
remain off and minimizes the output load to
reduce inrush current and power dissipation
during start-up.
When the device reaches all the following
conditions:
VFB > 0.6V
VGS > 3V
VOUT > VIN - 1V
and EN is disabled. Use a 100kΩ pull-up resistor
for PG and FLTB.
Power-Up Sequence
For hot-swap capable applications, the
MPQ5069’s input can experience a voltage spike
or transient during the hot swap. This spike is
caused by the parasitic inductance of the input
trace and the input capacitor. An insertion delay
determined by the external capacitor at the
TIMER pin stabilizes the input voltage.
The input voltage rises immediately, and a 30Ω
resistor pulls the internal VGS voltage low (see
Figure 4).
The PG signal is pulled high. The system can
now draw full power.
When the FB voltage drops below 0.54V, the
MOSFET’s VGS voltage is less than 3V, or the
output voltage is less than VIN - 1V, PG is pulled
low.
The PG output is also pulled low when either the
EN pin is below its threshold or the input UVLO is
triggered.
With no input, PG remains at logic low in the
presence of a pull-up supply.
FLTB Pin
The fault bar (FLTB) pin is an open-drain output
used to indicate whether a fault has occurred.
Pull the FLTB pin up to the external power supply
through a 100kΩ resistor.
When the device reaches its current limit, the die
temperature exceeds the thermal shutdown
threshold, or the MOSFET is shorted before
power-up, the fault output is driven low with a
20µs propagation delay. If a short occurs and the
current reaches its 25A secondary current limit,
FLTB goes low with an ~8μs delay.
FLTB goes high when the MPQ5069 resumes
normal operation, which means the output
voltage exceeds the set voltage of the PG rising
threshold and the MOSFET is fully on (VGS > 3V).
Figure 4: Start-Up Sequence
The TIMER pin charges through a 40µA
constant-current source when the input voltage
reaches its UVLO threshold. When the TIMER
pin voltage reaches 1.23V, a 4µA current source
pulls up the MOSFET’s gate-source voltage.
Meanwhile, the TIMER pin voltage drops. Once
the gate voltage reaches its threshold (VGSTH),
the output voltage rises. The soft-start capacitor
determines the rise time.
Soft Start
A capacitor connected to the SS pin determines
the soft-start time: When the insertion delay time
ends, a constant-current source that is
proportional to the input voltage ramps up the
voltage on the SS pin. The output voltage rises at
a similar slew rate to the SS voltage.
External Pull-Up Voltage for PG and FLTB
PG and FLTB require an external power supply.
The open-drain output of PG can work well from
the external pull-up voltage, even when VIN = 0
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MPQ5069 – 7mΩ PROTECTION SWITCH WITH CURRENT MONITOR
The SS capacitor value is calculated with
Equation (1):
CSS
10 t SS
RSS
(1)
Where tSS is the soft-start time, and RSS = 2MΩ.
For example, a 100nF capacitor gives a soft-start
time of 20ms.
If the load capacitance is extremely large, the
current required to maintain the preset soft-start
time will exceed the current limit. At this point, the
load capacitor and the current limit control the
rise time.
Float the SS pin to generate a fast ramp-up
voltage. A 4μA current source pulls up the gate of
the MOSFET. The gate charge current controls
the output voltage rise time. The approximate
soft-start time is about 1ms, which is the
minimum soft-start time.
EN Pin
When the EN pin is above its rising threshold, the
part is enabled; when it is below that threshold,
the part is disabled.
When EN < 0.6V, the chip goes into the lowest
shutdown current mode. When EN is above 0.6V
but below its rising threshold, the chip remains in
shutdown mode with a slightly larger current.
When EN enables the part, the insertion delay
timer starts. When the insertion delay time ends,
the internal 4μA current source charges the
MOSFET’s gate. Charging takes about 1.5ms for
VGS to reach its threshold. Then the output
voltage rises following the SS-controlled slew
rate.
Damaged MOSFET Detection
The MPQ5069 can detect a shorted pass
MOSFET during start-up by treating an output
voltage that exceeds VIN - 1V during start-up as a
short on the MOSFET. The FLTB pin goes low to
indicate a fault condition, and the MOSFET
remains off. Once VOUT ≤ VIN - 1V, the device
starts up and resumes normal operation.
regulator takes the input voltage (VIN) and
operates in the full VIN range. When VIN is above
5.0V, the output of the regulator is in full
regulation. Lower VIN values result in lower output
voltages. The regulator is enabled when VIN
exceeds its UVLO threshold and EN is high. In
EN shutdown mode, the internal VCC regulator is
disabled to reduce power dissipation.
PD Pin
When the PD pin connects to the output, the part
is in pull-down mode. In this mode, when VIN is
below its UVLO or the EN pin is between 0.6V
and its rising threshold, an integrated 500Ω pulldown resistor attached to the output discharges
the output. Adding a resistor between the PD pin
and the output results in a slower output drop. If
the PD pin is floating, pull-down mode is disabled.
AUTO Pin
When the AUTO pin is floating, the part is in
auto-retry mode. In auto-retry mode, the part
turns off when it exceeds its thermal limit or
current limit timeout, and turns back on when the
part cools by 28°C or the restart timer completes.
When the AUTO pin is tied to ground, the part is
in latched-fault mode. In latched-fault mode, a
thermal fault or current limit fault latches the
output off until EN is toggled from low to high or
the input voltage restarts.
Under-Voltage Lockout (UVLO)
If the input supply falls below the under-voltage
lockout (UVLO) threshold, the output is disabled
and the PG pin goes low. When the supply
exceeds the UVLO threshold, the output is
enabled and PG is released.
Monitoring the Output Current
The IMON pin provides a voltage proportional to
the output current (the current through the power
device). Tie a resister to ground to set the gain of
the output. Place a 100nF capacitor from IMON
to GND to smooth the indicator voltage.
Internal VCC Sub-Regulator
The MPQ5069 has an internal 5V linear subregulator that powers low-voltage circuitry. This
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MPQ5069 – 7mΩ PROTECTION SWITCH WITH CURRENT MONITOR
APPLICATION INFORMATION
Setting the Current Limit (RSET)
The MPQ5069 current-limit value should exceed
the normal maximum load current, allowing for
the tolerances in the current-sense value.
Estimate the current limit using Equation (2):
ILIMIT =
0.6(V)
20 104 (A)
RSET
(2)
Table 1 shows the bench results from the
evaluation board.
Table 1: Current Limit vs. Current Limit Resistor
Current Limit Resistor (kΩ)
Current Limit (A)
7.5
15.9
10
12
20
6.08
Figure 5 shows the relationship between the set
resistance (RSET) and the current limit.
Current Monitoring
The MPQ5069 provides a MOSFET currentmonitoring function. Place a resistor (RMON) to
ground to set the gain of the output, calculated
with Equation (3):
IIMON
IPOWERFET
105
(3)
Where IPOWERFET is the power MOSFET current.
The IMON pin provides a voltage proportional to
the output current. Place a 10kΩ resistor from the
IMON pin to GND to obtain a 100mV/A, which is
the voltage proportional to the output current.
Place a 100nF capacitor from IMON to GND to
smooth the indicator voltage.
Design Example
Figure 7 shows the detailed application
schematic. For the typical performance and
circuit waveforms, see the Typical Performance
Characteristics section on page 8. For more
detailed device applications, refer to the related
evaluation board datasheet.
Figure 5: RSET vs. Current Limit
MPQ5069 Rev. 1.1
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11/19/2020
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MPQ5069 – 7mΩ PROTECTION SWITCH WITH CURRENT MONITOR
PCB Layout Guidelines (7)
Efficient PCB layout is crucial proper device
performance. For the best results, refer to Figure
6 and follow the guidelines below:
1. Place the high-current paths (GND, IN, and
OUT) very close to the device using short,
direct, and wide traces.
2. Place a small bypass capacitor to VIN to help
minimize transients that may occur on the
input supply line.
3. Place the external feedback resistors next to
the FB pin.
Bottom Layer & Bottom Silk
Figure 6: Recommended PCB Layout
4. Avoid placing any vias on the FB trace.
5. Connect the IN and GND pads to a large
copper plane to achieve better thermal
performance.
6. Place the input and output capacitors as
close to the device as possible to minimize
the effect of parasitic inductance.
7. Put vias in the thermal pad, and provide a
large copper area near the IN pin to improve
thermal performance. Ensure that all pins are
connected to get equal current distribution in
all legs.
8. Put vias in the thermal pad, and provide a
large copper area near the OUT pin to
improve thermal performance. Ensure that all
pins are connected to get equal current
distribution in all legs.
Note:
7) The recommended PCB layout is based on the Typical
Application Circuit (see Figure 7).
Top Layer & Top Silk
MPQ5069 Rev. 1.1
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11/19/2020
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MPQ5069 – 7mΩ PROTECTION SWITCH WITH CURRENT MONITOR
TYPICAL APPLICATION CIRCUIT
U1
VIN = 12V
21
C1A
10µF
C1 B
10µF
C1C
100nF
22
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
VIN
VIN
VOUT
20
19
18
17
16
15
14
13
R3
0
1
CN2
GND
3
2
1
2
AUTO
VCC
EN
PD
AUTO
FB
3
C5
220nF
4
R7
10k
5
12
MPQ5069
C3
220µF
CN1
GND
11
NC
PG
C2
4.7µF
R2
15.4k
1
EN
2
GND
R1
180k
10
R4 510k
9
R5 100k
GND
+5V
TIMER
GND
6
SS
IMON
8
IMON
R6
10k
GND
PG
Fault
GND
10nF
FLTB
7
C6
ISET
C4
100nF
GND
GND
Figure 7: Typical Application Circuit with 12A Current Limit
MPQ5069 Rev. 1.1
www.MonolithicPower.com
11/19/2020
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© 2020 MPS. All Rights Reserved.
18
MPQ5069 – 7mΩ PROTECTION SWITCH WITH CURRENT MONITOR
OUTLINE DRAWING FOR 22L FCQFN (3X5MM)
PACKAGEPACKAGE
INFORMATION
MF-PO-D-0136 revision 1.0
QFN-22 (3mmx5mm)
PIN 1 ID
0.125X45ºTYP
PIN 1 ID
MARKING
PIN 1 ID
INDEX AREA
BOTTOM VIEW
TOP VIEW
SIDE VIEW
NOTE:
0.125X45º
1) ALL DIMENSIONS ARE IN MILLIMETERS.
2) EXPOSED PADDLE SIZE DOES NOT
INCLUDE MOLD FLASH.
3) LEAD COPLANARITY SHALL BE 0.10
MILLIMETERS MAX.
4) JEDEC REFERENCE IS MO-220.
5) DRAWING IS NOT TO SCALE.
RECOMMENDED LAND PATTERN
MPQ5069 Rev. 1.1
www.MonolithicPower.com
11/19/2020
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19
MPQ5069 – 7mΩ PROTECTION SWITCH WITH CURRENT MONITOR
CARRIER INFORMATION
Part Number
MPQ5069GQV-AEC1–Z
Package
Description
QFN-22
(3mmx5mm)
Quantity/
Reel
Reel
Diameter
Carrier Tape
Width
Carrier Tape
Pitch
5000
13in
12mm
8mm
MPQ5069 Rev. 1.1
www.MonolithicPower.com
11/19/2020
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© 2020 MPS. All Rights Reserved.
20
MPQ5069 – 7mΩ PROTECTION SWITCH WITH CURRENT MONITOR
Revision History
1.0
Revision
Date
5/11/2020
1.1
11/16/2020
Revision #
Description
Initial Release
Delete the 28V description of the title
Add the comment:
“VIN (Max load dump voltage) ……………. +39V”
and add note (2)
Pages
Updated
Page 1
Page 4
NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications.
Users should warrant and guarantee that third-party Intellectual Property rights are not infringed upon when integrating MPS
products into any application. MPS will not assume any legal responsibility for any said applications.
MPQ5069 Rev. 1.1
www.MonolithicPower.com
11/19/2020
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2020 MPS. All Rights Reserved.
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