MPQ5411 [MPS]
100mA sync regulator with Li-ion battery charger;
| 型号： | MPQ5411 |
| 厂家： | 
MONOLITHIC POWER SYSTEMS |
| 描述： | 100mA sync regulator with Li-ion battery charger |
| 文件： | 总21页 (文件大小：970K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MPQ5411
CARGO IC
100mA sync regulator
with Li-ion battery charger
DESCRIPTION
FEATURES
The MPQ5411 CARGO IC is a monolithic
power management solution for hearing
instruments.
Wide 4V to 6V Charger Input Range
100mA Output Current
76% Efficiency Typical
Feedback Voltage Accuracy: 1%
Integrated Push-button De-bouncer
Cycle-by-Cycle Over Current Protection
On Die Thermal Protection
1.22V Output Voltage (Fix Mode)
Stable with Low ESR Output Ceramic
Capacitors
It contains a USB compatible, constant current/
constant voltage charger along with a high
efficiency synchronous step down regulator for
powering digital devices.
The MPQ5411 CARGO IC also features cell
protection, a battery life indicator and a
separate power switch for powering additional
power devices.
WLCSP-16 (1.7mmx1.7mm) Package
APPLICATIONS
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.
Hearing Instruments
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.
The MPQ5411 CARGO IC requires a minimum
number of external components and is available
in a WLCSP-16 (1.7mmx1.7mm) package.
TYPICAL APPLICATION
Vbatt
C4
B1
A4
VBAT
Battery
A1
VCH
ISET
VCH
ST
C1
L1
D1
SW
VO
C2
A2
ICHG
D2
A3
VOUT
LEDEN
MODE
LED
R1
C4
B3
D3
IPK
IPK
R2
C3
C3
C2
B4
TEOL
AGND
EN/PB
LED
B2
VO2
SW
C4=10µF, L1=10µH, C2=10µF, C1=1µF, C3= 100nF
MPQ5411 Cargo IC Rev. 1.02
6/24/2016
www.MonolithicPower.com
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© 2016 MPS. All Rights Reserved.
1
MPQ5411 CARGO IC – 100mA SYNC REGULATOR WITH BATTERY CHARGER
ORDERING INFORMATION
Part Number*
Package
Top Marking
WLCSP-16
(1.7mmx1.7mm)
MPQ5411GC
See Below
* For Tape & Reel, add suffix –Z (e.g. MPQ5411GC–Z);
TOP MARKING
CR: product code of MPQ5411GC:
Y: year code;
LLL: lot number;
PACKAGE REFERENCE
TOP VIEW
WLCSP-16 (1.7mmx1.7mm)
MPQ5411 Cargo IC Rev. 1.02
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© 2016 MPS. All Rights Reserved.
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MPQ5411 CARGO IC – 100mA SYNC REGULATOR WITH BATTERY CHARGER
ABSOLUTE MAXIMUM RATINGS (1)
Symbol
VCH
Parameters
Charger input
Condition
Min
-0.7
-0.3
Max
7
Units
V
Vbatt
Battery Supply Voltage
Switch pin voltage
All other pins
5V
V
Vsw
-0.3 Vbatt+0.3
V
-0.3
6.5
1.3
V
PD
Tj
Continuous Power Dissipation TA = +25°C
Junction temperature
W
150
260
150
C
C
C
TL
Lead Temperature
TSTD
Storage Temperature
-65
Electro-static Discharge voltage-
ESD-HBM
All pins, JESD22-A114 B 2000
V
human body model
ESD-machine model
ESD-charged device model
Latch up current
ESD-MM
ESD-CDM
ILU
All pins, JESD22-A115 A
All pins, JESD22-C101 A
JESD78 B
180
750
100
V
V
mA
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MPQ5411 CARGO IC – 100mA SYNC REGULATOR WITH BATTERY CHARGER
Recommended Operating Conditions (3)
Charger Input VCH ................................ 4V to 6V
Battery Supply Voltage Vbatt ........... 2.5V to 4.8V
Junction Temperature..............-40C to +125C
Notes:
1) 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-to-
ambient 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.
Thermal Resistance (4)
WLCSP-16 (1.7mmx1.7mm)..95........1 ....C/W
θJA θJC
3) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on JESD51-7, 4-layer PCB.
MPQ5411 Cargo IC Rev. 1.02
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MPQ5411 CARGO IC – 100mA SYNC REGULATOR WITH BATTERY CHARGER
ELECTRICAL CHARACTERISTICS
Vbatt =3.8V, VCH=5V, L=10µH, CIN=10µF, COUT=10µF, No LED connected, TA=+30 º C, unless
otherwise noted.
Parameters
Symbol Condition
Min
Typ
200
8
Max
Units
nA
Battery Supply Current (Shutdown)
Battery Supply Current (OFF)
Ishbatt
IC in stock condition
350
IOFFbatt
Push-Button state: OFF
µA
Battery Supply Current
(Quiescent)
Push-Button state: ON, no
switching
Iqbatt
Iqch
40
55
μA
Charger Supply Current
(Quiescent)
170
uA
DC/DC converter
VthEOL Vbatt 4.5V,
-1%
-1%
1.22
+1%
+1%
V
V
VO
(step
mode)
MODE connected to Vbatt
VthUVLO Vbatt VthEOL
MODE connected to Vbatt
,
1.17
1.1+
Output Voltage
Vo
(adaptive)
VthUVLO Vbatt 4.5V
MODE connected to GND
-1%
-1%
(Vbatt
-
+1%
+1%
V
V
3)/10
Vo
(fixed)
VthUVLO Vbatt 4.5V,
MODE float
1.22
PFET Switch On Resistance
NFET Switch On Resistance
Switch Leakage
RDSON
_
_
950
375
mΩ
mΩ
nA
P
RDSON
N
100
Minimum On Time(5)
TON
80
ns
Fix mode,
Vout from 10% to 90%
Soft-Start Time(5)
TSS-ON
0.3
ms
RIPK = 36.5 kΩ
50
mA
mA
I_peak (With 2kΩ peak current
resistor internal)
RIPK = 17.8 kΩ (5)
100
200
IPK
RIPK =7.87 kΩ (5)
Adaptive Mode
Step-Mode
mA
V
0.3
DC/DC Output Mode
Mode
V_batt
Float
High-Z
1
Fixed Output
MODE Pin Input Impedance
ZMODE
RSW
DC/DC SW Impedance when OFF
DCDC shutdown
kΩ
Vbatt Under Voltage Lockout
Threshold Falling. T_EOL filtered
Vbatt is valid
VthUVLO
IC entering stock mode
2.95
3.6
3.05
3.11
4
V
Charger
Charger Detection Threshold
Rising
Vthch
Vhysch
VREV
3.8
V
Charger Detection Threshold
Hysteresis
300
mV
nA
Battery Reverse Current to VCH
Pin
Vbatt = 4V,
Input = GND or Float
100
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MPQ5411 CARGO IC – 100mA SYNC REGULATOR WITH BATTERY CHARGER
Electrical Characteristics (continued)
Vbatt =3.8V, VCH=5V, L=10µH, CIN=10µF, COUT=10µF, No LED connected, TA=+30º C, unless
otherwise noted.
Parameters
Symbol Condition
Min
Typ
4.1
7.8
12
Max
Units
V
Battery Charge Termination Voltage CV
VCV
-0.5%
+0.5%
RISET = 169kΩ(5)
mA
mA
mA
mA
RISET = 100kΩ
RISET = 8.25kΩ(5)
RISET = 0kΩ(5)
-10%
+10%
Constant Current Regulation
Trickle Charge Current
ICHG
71
127
VCH = 5V,
Vbatt <Vthtrich
%ICH
G
Itrich
5
10
15
Trickle Threshold Voltage (Rising)
Vthtrich
When UVLO= 3.05V
2.83
2.93
180
3.08
V
Trickle Voltage Hysteresis
Vhystrich
mV
ICHG =12mA,
Vbatt = 3.8V
(6)
Dropout Voltage (VCH - Vbatt
)
Vdrop
400
mV
Thermal Operation High Limit (5)
Thermal Operation Low Limit (5)
Thermal Shutdown Hysteresis (5)
Dead (short) Battery Detection Timer(5)
Only for Charger
Only for Charger
Only for Charger
49
6
54
°C
°C
1
6
°C
Tsbatt
5.95
7
8.05
min
ICHG
/10
Charge Termination Current
Charging Termination Timer(5)
3.6
1.2
hour
Push-button controller (No charger connected)
En Pulse Input High Voltage
VHiEN
VLoEN
V
V
s
En Pulse Input Low Voltage
0.3
2.7
2.7
Enable Push On Time (OFF ON)
Disable Push time (ON OFF)
Power management
T_Push LED blink 1x
T_Push LED blink 2x
1.7
1.7
2.2
2.2
s
Vbatt EOL Threshold (falling)
VthEOL
Default value
3.52
0.8
3.59
100
1.1
3.66
V
Vth, EOL,
Hyst
Vth,EOL Hysteresis
mV
ms
T_EOL Low Pass Filter Time Constant
TEOL
C_ TEOL =0.1µF
1.4
LED Interface
LED Output Current for Batt Mode
IoSOC
Sourcing
Sourcing
80
100
300
120
uA
LED Output Current for CHRG Mode
LED Disable Threshold
IoSOC
240
360
0.3
uA
V
LEDDISTH
LEDENTH
LED Enable Threshold
1.2
1.4
V
LED EN pin pulldown resistor
Stock Condition
1
MΩ
Valid for Vbatt
>VthUVLO
Stock condition entering threshold on ST Pin
ST pin pull down resistor
VthST
RST
1.65
1
1.81
V
MΩ
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6/24/2016
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MPQ5411 CARGO IC – 100mA SYNC REGULATOR WITH BATTERY CHARGER
ELECTRICAL CHARACTERISTICS (continued)
Vbatt =3.8V, VCH=5V, L=10µH, CIN= 10µF, COUT=10µF , No LED connected, TA=+30ºC, unless
otherwise noted.
Parameters
Symbol Condition
T_ST_ST
Min
35
Typ
Max
Units
ms
ST pin entering Stock condition pulse width
Stock condition entering threshold on VCH
VCH_ST
-0.7
-0.4
V
T_ST_
VCH
VCH Pin negative pulse width for ST mode
190
3.8
ms
V
Stock condition leaving
System Extension Vout 2
Vo2 switch Rdson
VCH
RonVo2
1100
mΩ
System OFF or in
Shutdown mode
Vo2 off impedance
High Z
Vo2 Over current threshold
IthOC
IthSC
ICHG=12mA
3.8*ICHG
5*ICHG
9
mA
mA
ms
us
Vo2 short circuit threshold
ICHG=12mA
Vo2 Over current detection delay(5)
Vo2 short circuit detection delay(5)
Vo2 protection auto retry delay(5)
TDOC
TDSC
TDAR
300
75
ms
Notes:
5) Guaranteed by design, not tested.
6) VCH>Vbatt+400mV to guarantee charger works well
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© 2016 MPS. All Rights Reserved.
MPQ5411 CARGO IC – 100mA SYNC REGULATOR WITH BATTERY CHARGER
TYPICAL PERFORMANCE CHARACTERISTICS
Vbatt = 3.8V, VCH=5V, L=10µH, CIN= 10µF, COUT=10µF, TA=+30ºC, unless otherwise noted.
MPQ5411 Cargo IC Rev. 1.02
6/24/2016
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MPQ5411 CARGO IC – 100mA SYNC REGULATOR WITH BATTERY CHARGER
TYPICAL PERFORMANCE CHARACTERISTICS
Vbatt = 3.8V, VCH=5V, L=10µH, CIN= 10µF, COUT=10µF, TA=+30ºC, unless otherwise noted.
DC DC SECTION
Steady State
IOUT=1mA
Steady State
IOUT=30mA
Push-Button On
IOUT=0A
CH3: VEN
2V/div.
CH3: VEN
2V/div.
CH3: VEN
2V/div.
CH2: VOUT
CH2: VOUT
CH2: VOUT
500mV/div.
500mV/div.
500mV/div.
CH1: VSW
2V/div.
CH1: VSW
2V/div.
CH1: VSW
2V/div.
CH4: IL
CH4: IL
CH4: IL
50mA/div.
100mA/div.
50mA/div.
10µs/div.
1µs/div.
400µs/div.
Push-Button On
IOUT=30mA
Push-Button Off
IOUT=0A
Push-Button Off
IOUT=30mA
CH3: VEN
2V/div.
CH3: VEN
2V/div.
CH3: VEN
2V/div.
CH2: VOUT
CH2: VOUT
CH2: VOUT
500mV/div.
500mV/div.
500mV/div.
CH1: VSW
2V/div.
CH1: VSW
2V/div.
CH1: VSW
2V/div.
CH4: IL
CH4: IL
CH4: IL
50mA/div.
100mA/div.
50mA/div.
400µs/div.
20ms/div.
200µs/div.
SCP Steady State
SCP Entry
IOUT=0A to Short Circuit
SCP Entry
IOUT=30mA to Short Circuit
CH2: VOUT
CH2: VOUT
1V/div.
CH2: VOUT
500mV/div.
500mV/div.
CH1: VSW
2V/div.
CH1: VSW
2V/div.
CH1: VSW
2V/div.
CH3: IL
CH3: IL
CH3: IL
50mA/div.
50mA/div.
50mA/div.
10µs/div.
10µs/div.
4µs/div.
MPQ5411 Cargo IC Rev. 1.02
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MPQ5411 CARGO IC – 100mA SYNC REGULATOR WITH BATTERY CHARGER
TYPICAL PERFORMANCE CHARACTERISTICS
Vbatt = 3.8V, VCH=5V, L=10µH, CIN= 10µF, COUT=10µF, TA=+30ºC, unless otherwise noted.
DC DC SECTION
SCP Recovery
Short Circuit to IOUT =0
SCP Recovery
Short Circuit to IOUT =30mA
LED Blinks when
DCDC On
CH1: VOUT
2V/div.
CH2: VOUT
CH2: VOUT
500mV/div.
500mV/div.
CH3: LED
2V/div.
CH1: VSW
2V/div.
CH1: VSW
2V/div.
CH3: IL
CH3: IL
50mA/div.
50mA/div.
200µs/div.
200µs/div.
400ms/div.
LED Blinks when
DCDC Off
CH1: VOUT
2V/div.
CH3: LED
2V/div.
400ms/div.
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MPQ5411 CARGO IC – 100mA SYNC REGULATOR WITH BATTERY CHARGER
TYPICAL PERFORMANCE CHARACTERISTICS
Vbatt = 3.8V, VCH=5V, L=10µH, CIN= 10µF, COUT=10µF, TA=+30ºC, unless otherwise noted.
CHARGER SECTION
VCH On
VCH Off
Short Battery
CH2: VCH
2V/div.
CH2: VCH
2V/div.
CH2: VCH
1V/div.
CH1: Vbatt
2V/div.
CH1: Vbatt
2V/div.
CH1: Vbatt
2V/div.
CH4: ICHG
10mA/div.
CH4: ICHG
10mA/div.
CH4: ICHG
10mA/div.
CH3: LED
2V/div.
CH3: LED
2V/div.
CH3: LED
2V/div.
1s/div.
1s/div.
2s/div.
Open Battery
VCH Plug In when
DCDC Working
Charging at TC Mode
CH2: VCH
5V/div.
CH2: VCH
5V/div.
CH2: VCH
2V/div.
CH1: Vbatt
2V/div.
CH4: ICHG
10mA/div.
CH1: Vbatt
2V/div.
CH4: ICHG
10mA/div.
CH4: ICHG
10mA/div.
CH1: VOUT
2V/div.
CH3: LED
2V/div.
CH3: LED
2V/div.
CH3: LED
2V/div.
400ms/div.
2s/div.
1s/div.
End of Charge
Charger
(Out of Thermal)
ST Entering through
ST Pin
CH2: VCH
2V/div.
CH2: VCH
5V/div.
CH3: VST
1V/div.
CH1: Vbatt
2V/div.
CH3: LED
2V/div.
CH2: VOUT
1V/div.
CH1: VSW
2V/div.
CH4: ICHG
10mA/div.
CH1: Vbatt
2V/div.
CH4: ICHG
10mA/div.
CH3: LED
2V/div.
2s/div.
2s/div.
200ms/div.
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MPQ5411 CARGO IC – 100mA SYNC REGULATOR WITH BATTERY CHARGER
TYPICAL PERFORMANCE CHARACTERISTICS
Vbatt = 3.8V, VCH=5V, L=10µH, CIN= 10µF, COUT=10µF, TA=+30ºC, unless otherwise noted.
CHARGER SECTION
ST Entering through
VCH Pin
CH3: VCH
500mV/div.
CH2: VOUT
1V/div.
CH1: VSW
2V/div.
200ms/div.
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MPQ5411 CARGO IC – 100mA SYNC REGULATOR WITH BATTERY CHARGER
TYPICAL PERFORMANCE CHARACTERISTICS
Vbatt = 3.8V, VCH=5V, L=10µH, CIN= 10µF, COUT=10µF, TA=+30ºC, unless otherwise noted.
VO2 FUNCTION
Steady State
IOUT2=100mA
Push-Button On
IOUT=0A
Push-Button Off
IOUT=0A
CH1: Vbatt
2V/div.
CH1: Vbatt
2V/div.
CH1: Vbatt
2V/div.
CH3: VEN
2V/div.
CH3: VEN
2V/div.
CH3: VEN
2V/div.
CH2: VOUT2
2V/div.
CH2: VOUT2
2V/div.
CH2: VOUT2
2V/div.
CH4: LED
2V/div.
CH4: LED
2V/div.
CH4: LED
2V/div.
1s/div.
1s/div.
400ms/div.
VCH Plug In when
DCDC Working
CH1: Vbatt
2V/div.
CH3: VCH
2V/div.
CH2: VOUT2
2V/div.
CH4: LED
2V/div.
1s/div.
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MPQ5411 CARGO IC – 100mA SYNC REGULATOR WITH BATTERY CHARGER
PIN FUNCTIONS (Pin arrangement refer to package top view on page 2)
Pin #
A1
Name
VCH
Description
USB compatible input voltage for CC/CV lithium-ion battery charger
Connect resistor between this pin and ground to set maximum charge current
Input pin to control LED ON/OFF for EOL signaling
A2
ISET
A3
LED EN
Asserting this pin will place the device into the Shutdown mode. The system is latched
in this condition until a valid charger voltage is applied to the VCH pin.
A4
ST
B1
B2
B3
VBAT
VO2
LED
Connect Lithium-Ion battery here with 10uF decoupling capacitor
Switched pin that provides battery power to external circuitry when device is active
Current source output to drive LED. Signals Charging, Push-Button and EOL
Toggle control pin for enable/disable DC/DC converter and VO2. Connect a push-
button between this pin and GND
B4
EN
C1
C2
C3
PGND
AGND
T_EOL
Power ground
Signal ground
Connect to a 0.1uF capacitor to provide voltage filtering for low battery detection
Connect to Vbatt for step mode. Connect to GND for adaptive mode. Float this pin for fix
output mode.
C4
MODE
D1
D2
SW
Output of DC/DC converter. Connect to step-down inductor
Regulated output voltage pin for step down converter.
VOUT
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.
D3
D4
IPK
NC/VCTRL Not connected. Backup for PLL loop compensation cap, leave float.
Stock Condition
Activation*
Shutdown
Mode
Iq~100/200nA
V
CH>3.8V
V
CH>3.8V
Charging Mode
DC/DC, Vo2 and
Push-Button
Disabled
V
CH>Vbatt+400mV
Vbatt<
VthUVLO
Vbatt
VthUVLO
>
Normal Operation
System can be toggled
between OFF/ON
by Push-Button
Charger
OFF
*Stock Condition Activation: ST pin=High or
VCH negative pulse (s. EC Table)
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MPQ5411 CARGO IC – 100mA SYNC REGULATOR WITH BATTERY CHARGER
BLOCK DIAGRAM
2kΩ
Figure 1 – Functional Block Diagram
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MPQ5411 CARGO IC – 100mA SYNC REGULATOR WITH BATTERY CHARGER
OPERATION
MPQ5411 CARGO IC is a complete power
management solution for Lithium-Ion battery
powered device. It integrates a CC/CV charger,
Table 1 – ICHG vs. RISET
ICHG (mA)
RISET (kohm)
7.8
10
11
169
124
110
100
51
cell
protection
function,
high
efficiency
synchronous buck regulator, and a push button
controller.
12
MPQ5411 CARGO IC has following modes:
21.2
34.4
51
Shutdown: System draws only leakage current
from battery and re-activation is only possible by
connecting a charger. This mode is entered by
battery under voltage or activation of stock
condition.
27
15
71
127
8.25
0
ICHG vs. RISET
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 Mode-OFF condition.
140
120
100
80
Normal Operation: Vbatt > VthUVLO and no charger
is connected. In this mode the system can be
turned ON and OFF by toggling the push-button.
60
40
20
0
0
20
40
60
80 100 120 140 160 180
RISET (kohm)
CHARGER
The MPQ5411 CARGO IC 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.
Figure 3 – ICHG vs. RISET
When battery voltage falls below the trickle falling
threshold (Vthtrich minus 180mV hysteresis - 2.75V
typ.), 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 (Vthtrich), the
charger begins to charge at the 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 the 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 charge current ICHG or the
charge termination timer (>3.6h) expires.
Figure 2 – Typical Charging Profile
MPQ5411 CARGO IC 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.
The charging current, ICHG is programmed
through resistor RISET from ISET pin to GND. The
relationship of the charging current and RISET is
shown in Table 1 and Figure 3.
.
MPQ5411 Cargo IC Rev. 1.02
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16
MPQ5411 CARGO IC – 100mA SYNC REGULATOR WITH BATTERY CHARGER
CHARGING INDICATION
low side FET turns on to discharge the inductor
current. The low side FET turns off when zero
inductor current is detected. The converter is
entering DCM mode and waiting for the Vo
dropping below the threshold. When Vo drops
below the threshold, the high side FET turns on
again and start another cycle. The converter is
normally worked as DCM; While during the load
transient, it is able to go into CCM for a fast
transient response. This operation will minimize
the output cap and still always limit the max input
current close to peak current to protect the
battery cell. The peak current is set by the
resistor on the IPK pin. The relationship of the
peak current and RIPK is shown in Table 2 and
Figure 5. There is an internal 2kohm resistor in
series with RIPK to ensure the peak current is not
too large even RIPK=0.
During charging process LED will blink slowly
with a 2s period and 50% duty cycle. LED will be
turned on continuously when charge process is
finished.
DEAD BATTERY DETECTION
The cell voltage will be below trickle charge level,
the system will therefore start with trickle charge
current. If the cell voltage will not rise above the
threshold within 7 minutes, the IC will consider
the battery is dead and stop charging. LED will
blink fast with a period of 0.5s with 50% duty
cycle.
Table 2 – IPK vs. RIPK
Figure 4 – LED pattern for dead battery
IPK (mA)
30
RIPK (kohm)
100
LED is powered from charger when charger is
connected.
45
42.2
50
36.5
100
200
17.8
7.87
HIGH EFFICIENCY DC/DC
The core of the MPQ5411 CARGO IC is a high
efficiency integrated synchronous buck (η>76%)
to step down the voltage of the battery to a
regulated fix 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 for
Step-Mode and fixed Mode. The max output
voltage ripple is controlled to be <80mV for load
transients of 45mA/5ms. The over shoot voltage
during the startup is controlled to be < 150mV.
The max output capacitor is up to 250uF. The
DC/DC is automatically disabled when charger is
connected (when VCH >3.8V). And can be
enabled through push button when the charger is
disconnected. (VCH<3.5V). When the DC/DC is
off, the output impedance is active low to
discharge the capacitor.
Ipk vs. RIpk
200
180
160
140
120
100
80
60
40
20
0
0
20
40
Ipk (mA)
60
80
100
Figure 5 – IPK vs. RIPK
The effective switching frequency at a given load
can be influenced by the inductor value and IPK
setting.
The DC/DC converter is controlled through the
current limit comparator, Vo comparator and the
zero current comparator. If the Vo is below the
reference and the min off time is passed, the high
side FET turns on, and then the current through
high side FET is sensed and compared with the
current limit threshold. When the current reaches
the threshold, the high side FET turns off and the
During the light load, the switching frequency will
decrease. To prevent the frequency entering the
audible band, a proper inductor is needed (when
Ipk and load is fixed) to keep switching frequency
over 20kHz.
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17
MPQ5411 CARGO IC – 100mA SYNC REGULATOR WITH BATTERY CHARGER
The DC/DC features internal soft starts function.
The soft start time is about 0.3ms.
voltage change on its input to process the end of
battery life event. For example, to toggle the LED
EN pin thus blinks the LED with certain pattern.
The soft start voltage slowly ramps up from 0V to
Vref. When the soft start voltage is lower than the
Vref, soft start voltage overrides the Vref. With
large output cap, it is possible that Vo is not
charged to the regulated voltage during the soft
start time. At this condition, the converter will
charge the output cap with its max current as set
by IPK.
In fixed output mode:
The output of DC/DC is simply regulated at
1.22V.
PUSH BUTTON CONTROL
The push button is a toggle switch input: If the IC
is OFF a push action of longer than T_Push will
cause the IC to turn ON. Additional pressing of
longer than T_Push will cause the IC to turn
OFF. The push button controller contains an
internal timer, and a flip-flop. The debounce timer
will start counting when the output of the
debouncer is equal to the EN. And resets
whenever the EN pin bounce. The output flips
when the time is out. When the output of the
debouncer is not equal to the EN, the timer will
start to count as the idle mode delay timer. When
time elapsed, the debouncer goes to idle mode
and consumes no power until the EN pin
bounces again.
Thermal shutdown is implemented to prevent
thermal run away. If the die temperature is higher
than the upper threshold, the IC will shut down
until the die temperature is recovered.
END OF BATTERY LIFE INDICATION
The DC/DC can be set as adaptive mode by
connecting MODE to Vbatt; set as step mode by
connecting MODE to GND; and set as fix output
voltage mode by floating MODE. The capacitor
on the T_EOL pin acts as a low pass filter to
obtain the average voltage of the battery over
1ms. (which is depending on T_EOL capacitor
C3)
In adaptive mode:
The output of the debouncer then feeds the
signal to a flip-flop which is triggered by rising
edge to enable/disable the DC/DC and the Vo2
MOSFET.
The low pass filtered cell voltage is in the range
of 4.1V to 3V. The delta voltage of the slope is
1.1V.and will be divided by 10 = 110mV. This
slope voltage shifted by 1.1V generates the
The output of the flip-flop is forced to low when
VCH is connected (VCH>3.8V). it forces the DC/DC
and Vo2 MOSFET to be disabled. Toggling the
push button cannot turn on the DC/DC and the
Vo2 MOSFET at this condition. When charger is
removed (VCH<3.8V), the output of the flip-flop
will stay low, but will flip when push button is
toggled.
DC/DC
adaptive
reference
voltage
of
1.22V….1.1V. By doing so, the load device will
be able to determine the end of battery life. And it
can toggle the LED EN pin to indicate the end of
battery life through LED.
Cell
Voltage
dVBatt
Appr
1100mV
4.1V
3V
HI
Voltage
1.22V
To
The push button is also disabled when the IC is
in Shutdown Mode due to Stock Condition
activation or Battery voltage is below under
dVBatt
/10
1.10V
voltage threshold, Vbatt <(VthUVLO -VhysUVLO
)
Figure 6 – adaptive mode
T_Push > 2.2s OFFON and T_Push > 2.2s
ON OFF
In step mode:
When the averaged Vbatt is smaller than EOL
threshold, the internal reference of DC/DC will
drop ~5% to indicate the END of battery life. The
default output voltage is fixed at 1.22V. So when
Vbatt< VthEOL, the output voltage will be ~1.17V.
The load IC needs to have way to sense the
Push times shorter than T_Push will be ignored
by MPQ5411 CARGO IC.
MPQ5411 Cargo IC Rev. 1.02
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18
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MPQ5411 CARGO IC – 100mA SYNC REGULATOR WITH BATTERY CHARGER
not happen. The system will shut down until the
charger is connected.
POWER ON/OFF INDICATION
LED will blink once for 0.25s to indicate power
ON. And blink twice for 0.25s (tp=0.5s, 50% duty
cycle) to indicate Power OFF. LED blink routine
always starts on active low.
BATTERY
UNDER
VOLTAGE
PROTECTION
If the low pass filtered battery voltage is lower
than VthUVLO the DC/DC will be disabled. There is
NO UVLO hysteresis. The MOSFET to the Vo2
will also be turned off and the system will be in
Shutdown mode. Push-button is in-active in this
condition. MPQ5411 CARGO IC is latched in this
Shutdown mode until a valid external power
source is connected to VCH pin. (VCH > 3.8V).
5*ICHG
3.8*ICHG
Figure 7 – VO2 over current detection
SYSTEM EXTENTION
MPQ5411 CARGO IC 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
share the power management function of
MPQ5411 CARGO IC.
System extension Vo2 is independent of output
MODE pin setting.
5*ICHG
3.8*ICHG
When battery voltage is lower than UVLO
threshold, the MOSFET between Vo2 and Vbatt
will turn OFF. During the charge, when VCH is
>3.8V, the MOSFET also turns 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.
Figure 8 – VO2 short circuit detection
STOCK CONDITION SETTING
MPQ5411 CARGO IC offers a stock condition
setting to set the IC into shut down mode that
consumes only ~200nA current. Once the ST pin
is pulled HIGH with a positive pulse for longer
than T_ST_ST or VCH pin is pulled negative to
VCH<-0.4V with a negative pulse for longer than
T_ST_VCH, the IC turns off all the function and
can only be enabled when a valid external power
source is connected(VCH>3.8V). MPQ5411
CARGO IC has option to disable stock condition
activation via a negative pulse at VCH pin, in case
this function creates trouble due ringing.
When the discharging current is sensed higher
than the over current threshold (>3.8x ICHG) but
lower than the short circuit threshold (>5x ICHG),
the switch will turn off after the over current
detection delay time (TDOC=9ms). When the
discharging current is higher than short circuit
threshold (>5x ICHG), the switch will turn off within
the short circuit detection delay time
(TDSC=300µs). The switch will turn on again after
the auto retry time delay (TRAR=100ms). The
timing charts are shown in figure 7 and figure 8.
In the case that the battery voltage is discharged
lower than the UVLO threshold, the auto retry will
MPQ5411 Cargo IC Rev. 1.02
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19
MPQ5411 CARGO IC – 100mA SYNC REGULATOR WITH BATTERY CHARGER
LED FUNCTION
Depending on the system status LED has
different function. In line with the process
tolerances, a variation of up to ±20% should be
accounted for the LED timing parameters.
1. Charging
LED blinks slowly with tp=2s and 50% duty-
cycle to indicate charging process.
LED blinks fast with tp=0.5s and 50% duty-
cycle to indicate a battery fault.
LED is continuously ON to indicate END of
charge.
2. Push-Button
Blink 1x to indicate OFF to ON transition.
Blink 2x to indicate ON to OFF transition.
tp=0.5s with 50% duty cycle.
3. EOL indication controlled by LED_EN
HI system IC can steer the LED to indicate
EOL if needed.
4. Charger Out of Thermal Operation Limit
Blink twice with 250ms on and 250ms off, and
then wait for 1.25s. Pattern repeats at 2s
period.
LED blink cycle always starts with a LOW (OFF)
indication.
MPQ5411 Cargo IC Rev. 1.02
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20
MPQ5411 CARGO IC – 100mA SYNC REGULATOR WITH BATTERY CHARGER
PACKAGE INFORMATION
WLCSP-16 (1.7mmx1.7mm)
PIN 1 ID
PIN 1 ID
MARKING
PIN 1 ID
INDEX AREA
TOP VIEW
BOTTOM 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.
MPQ5411 Cargo IC Rev. 1.02
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21
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