MPQ5480
Integrated Charger with 5V/100mA DCDC
Synchronous Regulator
END OF LIFE
DESCRIPTION
FEATURES
The MPQ5480 is a monolithic power
management solution for wearable device.
•
•
•
•
•
It contains a USB compatible, constant current/
constant voltage charger along with a high
efficiency synchronous step down regulator.
The MPQ5480 also features cell protection and
a separate power switch for powering additional
power devices.
•
•
•
•
The hysteresis control scheme provides fast
transient response and eases loop stabilization.
Fault condition protection includes cycle by
cycle current limiting, output short protection
and thermal shutdown.
•
Wide 4V to 6V Charger Input Range
100mA DC-DC Output Current
Feedback Voltage Accuracy: 1%
1.22V Default Output Voltage
Programmable Output Voltage via Resistor
Divider (For VOUT>1.22V)
Integrated Push-button De-bouncer
Cycle-by-Cycle Over Current Protection
On Die Thermal Protection
Stable with Low ESR Output Ceramic
Capacitors
Available in a WLCSP-16 (1.7mmx1.7mm)
Package
APPLICATIONS
The MPQ5480 requires a minimum number of
external components and is available in a
WLCSP-16 (1.7mmx1.7mm) package.
•
•
Wearable Device
Other Battery Based Portable Device
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” and “The Future of Analog IC Technology” are registered trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
BATT
C4
CH
CH
C1
MPQ5480
Battery
L1
SW
ICHG
C2
ICHG
VOUT
R1
IPK
VOUT
IPK
R2
C3
Vo2
PGND
EOL
AGND
EN/PB
SW
MPQ5480 Rev. 1.0
www.MonolithicPower.com
3/11/2016
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MPQ5480 – INTEGRATED CHARGER WITH 5V/100mA DCDC SYNC REGULATOR
END OF LIFE
ORDERING INFORMATION
Part Number*
Package
WLCSP-16
(1.7mmx1.7mm)
MPQ5480GC
Top Marking
See Below
* For Tape & Reel, add suffix –Z (e.g. MPQ5480GC–Z);
TOP MARKING
EN: product code of MPQ5480GC;
Y: year code;
LLL: lot number;
PACKAGE REFERENCE
TOP VIEW
1
2
3
4
A
CH
ICHG
NC
NC
B
BATT
VO2
NC
EN/
PB
C
PGND
AGND
EOL
NC
D
SW
VOUT
IPK
NC
WLCSP-16 (1.7mmx1.7mm)
MPQ5480 Rev. 1.0
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3/11/2016
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MPQ5480 – INTEGRATED CHARGER WITH 5V/100mA DCDC SYNC REGULATOR
END OF LIFE
ABSOLUTE MAXIMUM RATINGS (1)
Thermal Resistance (3)
Charger input (VCH) ............................. -1V to 7V
Battery supply voltage (VBATT) .......... -0.3V to 5V
Switch pin voltage (VSW)...... -0.3V to VBATT+0.3V
All other pins ................................. -0.3V to 6.5V
Continuous power dissipation (TA = +25°C) (2)
..................................................................1.3W
Junction temperature ............................... 150°C
Lead temperature .................................... 260°C
Storage temperature .................. -65°C to 150°C
WLCSP-16 (1.7mmx1.7mm) ... 95 ....... 1 .... C/W
Recommended Operating Conditions
Charger input (VCH) .............................. 4V to 6V
Battery supply voltage (VBATT) ........ 2.5V to 4.8V
Operating junction temp. (TJ) ... -40C to +125C
θJA
θJC
Notes:
1) Absolute maximum ratings are rated under room temperature
unless otherwise noted. Exceeding these ratings may
damage the device.
2) 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.
3) Measured on JESD51-7, 4-layer PCB.
MPQ5480 Rev. 1.0
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MPQ5480 – INTEGRATED CHARGER WITH 5V/100mA DCDC SYNC REGULATOR
END OF LIFE
ELECTRICAL CHARACTERISTICS
VBATT=3.8V, VCH=5V, L=10µH, CIN=10µF, COUT=10µF, TA=+30ºC, unless otherwise noted.
Parameters
Symbol Condition
Battery supply current (Shutdown)
ISHDN_BATT VBATT < Vth_UVLO
Battery supply current (OFF)
IOFF_BATT
Battery supply current (quiescent)
IQ_BATT
Charger supply current (quiescent)
IQ_CH
Min
Typ
Max
Units
200
350
nA
Push-button state: OFF
8
Push-button state: ON, no
switching
40
µA
55
170
μA
uA
DC/DC converter
Output voltage
VOUT
Vth_UVLO VBATT 4.5V
(default)
PFET switch on resistance
RDSON_P
950
mΩ
NFET switch on resistance
RDSON_N
375
mΩ
Switch leakage
SWLKG
Minimum on time(4)
TON_MIN
Soft-start time(4)
Peak current limit
DC/DC SW impedance when OFF
VBATT under-voltage lockout
threshold
tSS
IPK
RSW
-1%
1.22
+1%
100
V
nA
80
ns
VOUT from 10% to 90%
0.3
ms
RIPK=36.5kΩ
50
RIPK=17.8kΩ (4)
100
RIPK=7.87kΩ (4)
200
DC/DC shutdown
mA
kΩ
1
Vth_UVLO
2.95
3.05
3.11
V
Charger detection threshold-rising
Vth_CH
3.6
3.8
4
V
Charger detection thresholdhysteresis
Vhys_CH
Charger
Battery reverse current to CH pin
VREV
Battery charge termination voltage
VCV
300
VBATT = 4V, CH connected
to GND or float
-0.5%
RICHG = 169kΩ (4)
RICHG = 100kΩ
Constant current regulation
ICHG
mV
4.1
100
nA
+0.5%
V
7.8
-10%
12
mA
+10%
mA
RICHG = 8.25kΩ (4)
71
mA
RICHG = 0kΩ (4)
127
mA
MPQ5480 Rev. 1.0
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MPQ5480 – INTEGRATED CHARGER WITH 5V/100mA DCDC SYNC REGULATOR
END OF LIFE
Electrical Characteristics (continued)
VBATT=3.8V, VCH=5V, L=10µH, CIN=10µF, COUT=10µF, TA=+30ºC, unless otherwise noted.
Parameters
Symbol
Trickle threshold voltage (rising)
Vth_trich
Trickle voltage hysteresis
Vhys_trich
Trickle charge current
Itrich
Dropout voltage (VCH - VBATT) (5)
Min
Typ
Max
Units
2.83
2.93
3.08
V
180
VBATT < Vth_trich
5
10
ICHG =12mA
400
Thermal operation high limit (4)
Only for charger
49
(4)
Only for charger
Thermal operation low limit
VDROP
Condition
Thermal shutdown hysteresis (4)
Dead battery detection timer (4)
1
Only for charger
TDEAD_BATT
5.95
Charging termination current
mV
15
mV
54
°C
6
°C
6
°C
7
8.05
10
Charging termination timer (4)
%ICHG
min
%ICHG
3.6
hour
1.2
V
Push-button controller (No charger connected)
En pulse input high voltage
VEN_HIGH
En pulse input low voltage
VEN_LOW
0.3
V
Enable push on time (OFF ➔ ON)
TPUSH
1.7
2.2
2.7
s
Disable push time (ON ➔ OFF)
TPUSH
1.7
2.2
2.7
s
System extension Vo2
Vo2 switch on resistance
RDSON_Vo2
1100
Vo2 off impedance
mΩ
High Z
Vo2 over current threshold
Ith_OC
ICHG=12mA
3.8*ICHG
mA
Vo2 short circuit threshold
Ith_SC
ICHG=12mA
5*ICHG
mA
Vo2 over current detection delay (4)
TDOC
9
ms
Vo2 short circuit detection delay (4)
TDSC
300
us
Vo2 protection auto retry delay (4)
TDAR
75
ms
Notes:
4) Guaranteed by design, not tested.
5) VCH>VBATT+400mV to guarantee charger works well.
MPQ5480 Rev. 1.0
www.MonolithicPower.com
3/11/2016
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MPQ5480 – INTEGRATED CHARGER WITH 5V/100mA DCDC SYNC REGULATOR
END OF LIFE
TYPICAL PERFORMANCE CHARACTERISTICS
VBATT = 3.8V, VCH=5V, L=10µH, CIN= 10µF, COUT=10µF, TA=+30ºC, unless otherwise noted.
MPQ5480 Rev. 1.0
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3/11/2016
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MPQ5480 – INTEGRATED CHARGER WITH 5V/100mA DCDC SYNC REGULATOR
END OF LIFE
TYPICAL PERFORMANCE CHARACTERISTICS
VBATT = 3.8V, VCH=5V, L=10µH, CIN= 10µF, COUT=10µF, TA=+30ºC, unless otherwise noted.
DC/DC Section
Steady State
Steady State
Push-button On
IOUT=1mA
IOUT=30mA
IOUT=0A
CH3: VEN
2V/div.
CH3: VEN
2V/div.
CH3: VEN
2V/div.
CH2: VOUT
500mV/div.
CH2: VOUT
500mV/div.
CH2: VOUT
500mV/div.
CH1: VSW
2V/div.
CH1: VSW
2V/div.
CH1: VSW
2V/div.
CH4: IL
50mA/div.
CH4: IL
50mA/div.
CH4: IL
100mA/div.
10µs/div.
1µs/div.
400µs/div.
Push-button On
Push-button Off
Push-button Off
IOUT=30mA
IOUT=0A
IOUT=30mA
CH3: VEN
2V/div.
CH3: VEN
2V/div.
CH3: VEN
2V/div.
CH2: VOUT
500mV/div.
CH2: VOUT
500mV/div.
CH2: VOUT
500mV/div.
CH1: VSW
2V/div.
CH1: VSW
2V/div.
CH1: VSW
2V/div.
CH4: IL
50mA/div.
CH4: IL
100mA/div.
CH4: IL
50mA/div.
400µs/div.
20ms/div.
SCP Steady State
200µs/div.
SCP Entry
SCP Entry
IOUT=0A to Short Circuit
IOUT=30mA to Short Circuit
CH2: VOUT
500mV/div.
CH2: VOUT
1V/div.
CH2: VOUT
500mV/div.
CH1: VSW
2V/div.
CH1: VSW
2V/div.
CH1: VSW
2V/div.
CH3: IL
50mA/div.
CH3: IL
50mA/div.
CH3: IL
50mA/div.
10µs/div.
10µs/div.
MPQ5480 Rev. 1.0
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4µs/div.
7
MPQ5480 – INTEGRATED CHARGER WITH 5V/100mA DCDC SYNC REGULATOR
END OF LIFE
TYPICAL PERFORMANCE CHARACTERISTICS
VBATT = 3.8V, VCH=5V, L=10µH, CIN= 10µF, COUT=10µF, TA=+30ºC, unless otherwise noted.
DC/DC Section
SCP Recovery
SCP Recovery
Thermal Shutdown
Short Circuit to IOUT =0
Short Circuit to IOUT =30mA
IOUT =30mA
CH2: VOUT
500mV/div.
CH2: VOUT
500mV/div.
CH1: VSW
2V/div.
CH1: VSW
2V/div.
CH1: VSW
2V/div.
CH2: VOUT
1V/div.
CH3: IL
50mA/div.
CH3: IL
50mA/div.
CH3: VBATT
2V/div.
CH4: IL
50mV/div.
200µs/div.
200µs/div.
MPQ5480 Rev. 1.0
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1s/div.
8
MPQ5480 – INTEGRATED CHARGER WITH 5V/100mA DCDC SYNC REGULATOR
END OF LIFE
TYPICAL PERFORMANCE CHARACTERISTICS
VBATT = 3.8V, VCH=5V, RICHG=2.49kΩ, L=10µH, CIN= 10µF, COUT=10µF, TA=+30ºC, unless otherwise
noted.
Charger Section
MPQ5480 Rev. 1.0
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3/11/2016
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MPQ5480 – INTEGRATED CHARGER WITH 5V/100mA DCDC SYNC REGULATOR
END OF LIFE
TYPICAL PERFORMANCE CHARACTERISTICS
VBATT = 3.8V, VCH=5V, L=10µH, CIN= 10µF, COUT=10µF, TA=+30ºC, unless otherwise noted.
Vo2 Function
MPQ5480 Rev. 1.0
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MPQ5480 – INTEGRATED CHARGER WITH 5V/100mA DCDC SYNC REGULATOR
END OF LIFE
PIN FUNCTIONS (Pin arrangement refer to package top view on page 2)
Pin #
Name
A1
CH
A2
ICHG
A3
NC
A4
B1
NC
BATT
B2
Vo2
B3
NC
B4
EN/PB
C1
C2
PGND
AGND
C3
EOL
C4
D1
NC
SW
D2
VOUT
D3
IPK
D4
NC
Description
Charger input. USB compatible input voltage for CC/CV lithium-ion battery charger.
Charge current set. Connect resistor between this pin and ground to set maximum
charge current.
Do not connect. NC must be left floating.
Do not connect. NC must be left floating.
Connect to Lithium-Ion battery. A decoupling capacitor is needed here.
Extension output. Switched pin that provides battery power to external circuitry when
device is active.
Do not connect. NC must be left floating.
Enable input, push-button. Toggle control pin for enable/disable DC/DC converter
and Vo2. Connect a push-button between this pin and GND.
Power ground. Reference ground of the power device.
Analog ground. Reference ground of logic circuit.
Low battery voltage detection. Connect to a 0.1uF capacitor to provide filtered
battery voltage for battery UVLO protection.
Do not connect. NC must be left floating.
Switch output of DC/DC converter. Connect to step-down inductor.
Power output of DC/DC converter.
Peak current set of DC/DC converter. Connect resistor between this pin and ground
to set inductor peak current. There is an internal 2kΩ resistor in series with IPK to
ensure the peak current not too large even RIPK=0.
Do not connect. NC must be left floating.
Shutdown
Mode
VCH>3.8V &
VCH>VBATT+400mV
VBATT3.8V
Charging Mode
DC/DC, Vo2 and
Push-button
Disabled
Remove
Charger
&
VBATT>Vth_UVLO
MPQ5480 Rev. 1.0
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3/11/2016
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MPQ5480 – INTEGRATED CHARGER WITH 5V/100mA DCDC SYNC REGULATOR
END OF LIFE
BLOCK DIAGRAM
Vo2
current protected
switch
BATT
CH
charger
detection
ICHG
CC/CV charge
control
SET
UVLO
ref
DC/DC
Enable
DC/DC
SW
Vo
Ipeak
IPK
2kΩ
Min off
time
Ipeak
setting
VOUT
HD
R Q
PWM
S
FB
Divider
ZX LD
Feedback
comparator
EOL
PGND
Zero cross
SET
Vref
Softstart
IC Enable
Latch
2.2s
debounce
timer
EN/PB
AGND
Figure 1: Functional Block Diagram
MPQ5480 Rev. 1.0
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MPQ5480 – INTEGRATED CHARGER WITH 5V/100mA DCDC SYNC REGULATOR
END OF LIFE
OPERATION
Table 1: ICHG vs. RICHG
MPQ5480 is a complete power management
solution for Lithium-Ion battery powered device. It
integrates a CC/CV charger, cell protection
function, high efficiency synchronous buck
regulator and a push-button controller.
ICHG (mA)
7.8
10
11
12
21.2
34.4
51
71
100
127
MPQ5480 has following modes:
Shutdown: When VBATT < Vth_UVLO, system draws
only leakage current from battery and reactivation is only possible by connecting a
charger.
Normal Operation (ON/OFF): VBATT > Vth_UVLO
and no charger is connected. In this mode the
system can be turned ON or OFF by toggling the
push-button.
Charger
The MPQ5480 integrated linear charger provides
CC/CV charging algorithms. It changes charge
modes automatically depending on the battery
status. A typical charging profile is shown on
Figure 2.
ICHG vs. RICHG
140
120
100
80
ICHG
(mA)
Charging: Charger is connected to system.
DC/DC, Vo2 and push-button are de-activated.
After charger is removed system will be in
Normal Operation OFF condition.
RICHG (kΩ)
169
124
110
100
51
27
15
8.25
2.49
0
60
40
20
0
0
20
40
60
80
100 120 140 160 180
RICHG (kΩ)
Figure 3: ICHG vs. RICHG
Figure 2: Typical Charging Profile
The defined charging current, ICHG is
programmed through resistor RICHG from ICHG
pin to GND. The relationship of the charging
current and RICHG is shown in Table 1 and Figure
3.
When battery voltage falls below the trickle falling
threshold (Vth_trich with ~180mV hysteresis), the
charging current is limited to 10% of the
programmed value to trickle charge the fully
depleted battery. After the battery voltage
reaches the trickle rising threshold (Vth_trich), the
charger begins to charge at a constant current of
the programmed value (ICHG). ICHG is typically set
to C/2. This is referred to as Constant Current
(CC) mode. Once the battery voltage reaches
CV-Level VCV (e.g. 4.10V), the charger will
operate in Constant Voltage (CV) mode until the
battery is fully charged. Charging is terminated
when the current into the battery falls to 10% of
the defined charging current ICHG or the charge
termination timer (3.6h) expires.
MPQ5480 also provides an ON Chip temperature
sensor to prevent charging outside normal
battery temperature limits. The charger will only
start to charge when the die temperature is
between 6°C and 49°C.
MPQ5480 Rev. 1.0
www.MonolithicPower.com
3/11/2016
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MPQ5480 – INTEGRATED CHARGER WITH 5V/100mA DCDC SYNC REGULATOR
Dead Battery Detection
When the cell voltage is below trickle charge
level, the system will therefore start with trickle
charge. If the cell voltage will not rise above the
threshold within 7 minutes, the IC will consider
the battery is dead and stop charging.
High Efficiency DC/DC
The core of the MPQ5480 is a high efficiency
integrated synchronous buck to step down the
voltage of the battery to a regulated voltage. The
peak inductor current is always limited to prevent
the damage of the small cell. The default output
voltage is set to 1.22V. The max output voltage
ripple is controlled to be 2.2s, OFF➔ON; and TPUSH > 2.2s, ON➔
OFF.
Push times shorter than TPUSH will be ignored by
MPQ5480.
Battery Under-Voltage Protection
The capacitor on the EOL pin acts as a low pass
filter to obtain the average voltage of the battery
over 1ms (which is depending on the EOL
capacitor value). If the low pass filtered battery
voltage is lower than Vth_UVLO, the DC/DC will be
disabled. The MOSFET connected to the Vo2 will
also be turned off and the system will be in
shutdown mode. Push-button is inactive in this
condition. MPQ5480 is latched in this shutdown
mode until a valid external power source is
connected to CH pin (VCH > 3.8V). There is no
UVLO hysteresis.
System Extension
MPQ5480 offers a Vo2 pin to extend the power
system for more complex application. Additional
DC/DC converter can be connected to Vo2 to
draw the power from the battery while sharing the
power management function of MPQ5480.
When the battery voltage is lower than Vth_UVLO,
the MOSFET between Vo2 and VBATT will be
turned off. During the charge, when VCH > 3.8V,
the MOSFET is also turned off.
The extension switch also integrates the over
current protection and short circuit protection in
case too much current is drawn from the battery
resulting in cell damage.
When the output current is sensed higher than
the over current threshold (> 3.8 x ICHG) but lower
than the short circuit threshold (> 5 x ICHG), the
switch will turn off after the over current detection
delay time (TDOC=9ms). When the output current
is higher than short circuit threshold (> 5 x ICHG),
the switch will turn off after the short circuit
detection delay time (TDSC=300µs). The switch
will turn on again after the auto retry time delay
(TDAR=75ms). In case that the battery voltage is
lower than Vth_UVLO, the auto retry will not happen.
MPQ5480 Rev. 1.0
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MPQ5480 – INTEGRATED CHARGER WITH 5V/100mA DCDC SYNC REGULATOR
END OF LIFE
The timing charts are shown in Figure 6 and
Figure 7.
Four events can shut down Vo2: toggling the
push-button, charger is connected, VBATT <
Vth_UVLO, and thermal shutdown.
Figure 6: Vo2 over current detection
Figure 7: Vo2 short circuit detection
MPQ5480 Rev. 1.0
www.MonolithicPower.com
3/11/2016
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MPQ5480 – INTEGRATED CHARGER WITH 5V/100mA DCDC SYNC REGULATOR
END OF LIFE
PACKAGE INFORMATION
WLCSP-16 (1.7mmx1.7mm)
PIN 1 ID
PIN 1 ID
MARKING
PIN 1 ID
INDEX AREA
BOTTOM VIEW
TOP VIEW
SIDE VIEW
NOTE:
1) ALL DIMENSIONS ARE IN
MILLIMETERS.
2) BALL COPLANARITY SHALL BE 0.05
MILLIMETER MAX.
3) JEDEC REFERENCE IS MO-211.
4) DRAWING IS NOT TO SCALE.
RECOMMENDED LAND PATTERN
NOTICE: The information in this document is subject to change without notice. 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.
MPQ5480 Rev. 1.0
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3/11/2016
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Preliminary Specifications Subject to Change
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