DIODES API9221FCG

API9221
Car/Wall or USB Supply Input Lithium Battery Charger
with OVP USB Bypass and 10mA LDO
Description
Pin Assignments
( Top View )
The PPR pin indicates to a host controller that a safe and
valid supply is connected to either VUSB or VDC. The higher
charge current option from VDC will take priority if both
supplies are connected. The host controller can control the
state of charging via the enable pin EN . The API9221
implements the constant current/constant voltage (CC/CV)
charge algorithm for Lithium based battery cells. The
connected cell will be charged to 4.2V with an accuracy of 1%
over the entire temperature range. The termination current is
programmable via an external resistor, RIMIN.
The CHG pin indicates when the termination current is
reached, and is reset by EN , power off, or battery below 3.9V.
The maximum charge current can be programmed
independently via the resistors RIUSB and RIVDC.
The API9221 comes with several protection features. To
prevent system damage, the VUSB pin uses over voltage
protection (OVP) at 5.4V, and the VDC OVP is at 6.9V. Above
these levels, the non-operating device is protected against
damage up to 28V. For control and system start-up the
API9221 has a current limited linear regulator.
To protect the chip against excessive power dissipation,
temperature monitoring is integrated, which folds back the
current to a safe level. As the temperature rises, this fold-back
begins at 125°C without completely interrupting charging.
Applications
•
•
•
•
•
Handheld Consumer Devices
Cell Phones, PDAs, MP3 Players
Handheld Test Equipment
Digital Still Cameras
Multimedia players
VDC
1
12
VUSB
2
11
BAT
PPR
3
10
USB_BYP
CHG
4
9
IVDC
EN
5
8
GND
IMIN
6
7
IUSB
Exposed Pad
VDC_LDO
DFN4030-12
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Linear Lithium Ion / Lithium Polymer charging IC
Supplied from USB host or car/wall adapter
Overvoltage protection USB: 5.4V, wall:6.9V
Supply inputs safe up to 28V
Fast charging with maximum current of 1.2A
Integrated linear regulator of 4.9V at 10mA with
current limit
Separate resistor-programmable charging
current for wall and USB
Resistor programmable end-of-charge
Current limit on USB bypass path
Indicator pins for charging and power present
Enable pin to enable host control charging
Reverse current protection
Thermal protection
DFN4030-12: Available in “Green” Molding Compound
(No Br, Sb)
Lead Free Finish/ RoHS Compliant (Note 1)
Note 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS
exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
Typical Application Circuit
DC Input
LDO Output
VDC_LDO
VDC
To Battery
USB Input
BAT
VUSB
OFF
ON
USB_BYP
API9221 USB_BYP
EN
PPR
To MCU
GND
CHG
API9221
Document number: DS32204 Rev. 1 - 2
IVDC
RIVDC
IUSB
RIUSB
IMIN
RIMIN
NEW PRODUCT
The API9221 has two supply inputs for highly integrated
portable applications, enabling charging from a USB host,
wall adapter, or car adapter.
I/O_VDD I/O_VDD
1 of 17
www.diodes.com
May 2010
© Diodes Incorporated
API9221
Car/Wall or USB Supply Input Lithium Battery Charger
with OVP USB Bypass and 10mA LDO
Pin Descriptions
NEW PRODUCT
( Top View )
VDC
1
12
VDC_LDO
VUSB
2
11
BAT
PPR
3
10
USB_BYP
CHG
4
9
IVDC
EN
5
8
GND
IMIN
6
7
IUSB
Exposed Pad
DFN4030-12
Name
Pin #
VDC
1
VUSB
2
PPR
3
CHG
4
EN
5
IMIN
6
IUSB
7
GND
8
IVDC
9
USB_BYP
10
BAT
11
VDC_LDO
12
Descriptions
The recommended input to this pin is 4.5V to 6.7V with a maximum safe value of
Input pin from a
28V. If a sufficient voltage is detected on VDC, no charge current is taken from the
wall AC/DC or car
VUSB pin. Internal OVP trips at 6.9V. The input current can be programmed with a
adapter
resistor at IVDC (pin 9). Decoupling with a 1μF ceramic capacitor is recommended.
The recommended input to this pin is 4.5V to 5.3V with a maximum safe value of
28V. Internal OVP trips at 5.4V. The supply current drawn at this pin is the sum of
USB Host device
the charge current and the USB_BYP current. Decoupling with a 1μF ceramic
input
capacitor is recommended. Special attention has to be given to the maximum
capacitance on the USB connection. Refer to the USB standard.
The power present pin can indicate to a host processor that an external source is
Power present
present and that current can be derived from the input. This is an open drain
signal output,
output pin, which goes LOW when a valid source voltage is connected to either
active-low
VUSB or VDC. If connected to a processor I/O a pull up resistor should be utilized.
Alternatively this pin can be used to drive an indicator LED up to 10mA.
Open drain pin is pulled LOW when charging is performed. Goes high when
charge current reaches IMIN. Remains high (including top-up), until the battery
Charge indicator
output, active-low voltage falls below 3.9V or the device is power cycled or EN is cycled. If
connected to a processor I/O a pull up resistor should be utilized.
Alternatively this pin can be used to drive an indicator LED up to 10mA.
Logic level input pin to control charging from an external processor. An internal
Charge enable
600kΩ (nominally) pull-down resistor is provided, This pin normally requires a pull
input, active-low
up resistor when connected to a processor I/O.
Current setting for The end-of-charge current is set by a resistor connected from this pin to GND.
end-of-charge
This applies to charging from either VDC or VUSB.
state
The USB input maximum charging current is set by a resistor connected from this
Current setting,
pin to GND. This current is also limited by a thermally controlled current fold-back
USB Power
circuit.
Ground
Ground return path.
Current setting,
VDC input maximum charging current is set by a resistor connected from this pin to
wall or car adapter GND. This current is also limited by a thermally controlled current fold-back circuit.
USB Bypass
Provides an external load path from the USB input, with current limiting. Protected
output
against reverse current.
Connect this pin to the positive terminal of the battery. This pin is also used to
Battery connector monitor the charge state of the battery. It is not recommended to operate the part
without a battery connected to this pin. Protected against reverse current.
Low current linear regulator for system supply, available when a valid VDC input
LDO output
supply is used. Stabilize with a 0.1μF to 1μF ceramic capacitor to ground.
Protected against reverse current.
API9221
Document number: DS32204 Rev. 1 - 2
2 of 17
www.diodes.com
May 2010
© Diodes Incorporated
API9221
Car/Wall or USB Supply Input Lithium Battery Charger
with OVP USB Bypass and 10mA LDO
Functional Block Diagram
USB_BYP
NEW PRODUCT
VUSB
VDC_LDO
BAT
VDC
IVDC
THERMAL
CURRENT
FOLDBACK
PROTECTION
CHARGER REGULATOR
IMIN
1.25V
REFERENCE
IUSB
CC/CV
OVPVDC
4.2V
VRCH
CHARGE
CONTROL
OVPVUSB
VMIN
VOSVDC
VOSVUSB
EN
CHARGE
CONDITION
COMPARATORS
3.9V
2.6V
VDC
VUSB
REN
PPR
CHG
GND
API9221
Document number: DS32204 Rev. 1 - 2
3 of 17
www.diodes.com
May 2010
© Diodes Incorporated
API9221
Car/Wall or USB Supply Input Lithium Battery Charger
with OVP USB Bypass and 10mA LDO
Absolute Maximum Ratings
NEW PRODUCT
Symbol
Parameter
Rating
-0.3 to 28V
-0.3 to 7V
-0.3 to 7V
-0.3 to 7V
Unit
V
V
V
V
2
200
kV
V
Rating
Unit
41
3.5
°C/W
Rating
Unit
Ambient Temperature Range
-40 to +85
°C
VUSB
Supply Voltage (VUSB)
4.5 to 5.3
V
VDC
Supply Voltage (VDC)
4.5 to 6.7
V
0.1 to 1.2
46.5 to 465
A
VDC, VUSB to GND
EN , IMIN, IVDC, IUSB, BAT
USB_BYP, VDC_LDO
CHG , PPR
ESD Susceptibility (Note 2)
HBM
Human Body Model
MM
Machine Model
Thermal Resistance (Note 3)
Symbol
θJA
θJC
Parameter
Junction to Ambient
Junction to Case
Recommended Operating Conditions (Note 4)
Symbol
Parameter
IVDC_CHRG
Typical Adapter Charge Current
IUSB_CHRG
Typical USB Charge Current
Typical USB Bypass Current
IUSB-BYP
ILDO
Notes:
Typical LDO Current
0 to 200
mA
mA
0 to 10
mA
2. Semiconductor devices are ESD sensitive and may be damaged by exposure to ESD events. Suitable ESD precautions should
be taken when handling and transporting this device.
3. Test condition for DFN4030-12: Measured on approximately 1” square of 1 oz copper.
4. The device function is not guaranteed outside of the recommended operating conditions.
API9221
Document number: DS32204 Rev. 1 - 2
4 of 17
www.diodes.com
May 2010
© Diodes Incorporated
API9221
Car/Wall or USB Supply Input Lithium Battery Charger
with OVP USB Bypass and 10mA LDO
Electrical Characteristics
API9221 is tested at VDC = VUSB = 5V at an ambient temperature of +25°C unless otherwise noted.
Symbol
Parameter
Test Conditions
Min
Typ.
Max
Unit
3.4
3.9
4.2
V
3.2
3.7
4.0
V
-
150
250
mV
20
80
-
mV
-
0.05
0.5
µA
-
380
460
µA
-
330
400
µA
-
0.63
1.1
mA
Load = 10mA
Load = 10mA
(TJ = +25°C)
VBAT =3.8V, IVDC =
0.3A, (TJ = +25°C)
VBAT = 3.8V, IUSB =
0.3A, (TJ = +25°C)
4.158
4.2
4.242
V
4.174
4.2
4.226
V
-
550
-
mΩ
-
550
-
mΩ
VBAT = 3.8V
1.22
1.25
1.28
V
RIVDC = 12.4kΩ, VBAT
= 2.7V to 3.8V
RIVDC = 12.4kΩ, VBAT
= 2.2V, given as a %
of the IVDC CHARGE
450
550
600
mA
15
17
19
%
NEW PRODUCT
CHARGER POWER-ON THRESHOLDS
Rising VUSB/VDC Threshold
VPOR
VPOF
Falling VUSB/VDC Threshold
INPUT VOLTAGE OFFSET
VOSHC
Rising VDC or VUSB, relative to
VBAT
VOSLC
Falling VDC or VUSB, relative to
VBAT
VBAT = 4.0V, use
CHG pin to indicate
the comparator
output
VBAT = 4.0V, use
CHG pin to indicate
the comparator
output
STANDBY CURRENT
ISTANDBY
BAT Pin Sink Current
IVDC
VDC Pin Supply Current
IVUSB
VUSB Pin Supply Current
IVDC_VUSB
VDC/VUSB Pin Supply Current
EN = HIGH or both
inputs are floating
EN = HIGH, ILDO = 0
EN = HIGH,
USB_BYP
disconnected
EN = LOW, ILDO = 0,
USB_BYP
disconnected
VOLTAGE REGULATION
VBATMAX
Final Output Voltage, BAT Pin
rDS(ON)_VDC
VDC Linear ON-resistance
rDS(ON)_VUSB
VUSB Linear ON-resistance
CHARGE CURRENT
VIVDC
VDC Pin Output Voltage
IVDC_CHRG
VDC Constant Current
IVDC_TRKL
VDC Trickle Charge Current
API9221
Document number: DS32204 Rev. 1 - 2
5 of 17
www.diodes.com
May 2010
© Diodes Incorporated
API9221
Car/Wall or USB Supply Input Lithium Battery Charger
with OVP USB Bypass and 10mA LDO
Electrical Characteristics (Continued)
API9221 is tested at VDC = VUSB = 5V at an ambient temperature of +25°C unless otherwise noted.
NEW PRODUCT
Symbol
VIUSB
Parameter
IUSB Pin Output Voltage
IUSB_CHRG
VUSB Constant Current
IUSB_TRKL
VUSB Trickle Charge Current
Test Conditions
VBAT = 3.8V
RIUSB = 29.4kΩ,
VBAT = 2.7V to 3.8V
RIUSB = 29.4kΩ,
VBAT = 2.2V and if
IUSB_CHRG ≤ IVDC_TRKL,
then given as a % of
the IUSB CHRG
If IUSB_CHRG ≤ IVDC_TRKL
DC and USB End-of-Charge
RMIN = 10kΩ
Threshold
PRECONDITIONING CHARGE THRESHOLD
Preconditioning Charge
VMIN
Threshold Voltage
RECHARGE THRESHOLD
Recharge Threshold Voltage
VRCH
PROTECTIONS
OVPVDC
VDC Overvoltage Level
HOVPVDC
VDC Overvoltage Hysteresis
OVPVUSB
VUSB Overvoltage Level
VUSB Overvoltage
HOVPVUSB
Hysteresis
IOCP
Short Circuit (USB_BYP)
BYPASS FETS
Resistance VUSB to
Measured at 200mA,
USB_rDS(ON)
USB_BYP
4.3V < VDC < 5.3V
IOUT = 150mA
Dropout VUSB to USB_BYP
VUSBDO
VVUSB > 4.3V
IMIN
API9221
Document number: DS32204 Rev. 1 - 2
6 of 17
www.diodes.com
Min
Typ.
Max
Unit
1.22
1.25
1.28
V
180
232
260
mA
15
17
19
%
-
IUSB_CHRG
-
%
40
55
70
mA
2.5
2.6
2.7
V
3.8
3.9
4.0
V
6.7
5.3
6.9
240
5.4
7.1
340
5.55
V
mV
V
-
150
200
mV
-
400
600
mA
-
1.16
2.0
Ω
-
200
-
mV
May 2010
© Diodes Incorporated
API9221
Car/Wall or USB Supply Input Lithium Battery Charger
with OVP USB Bypass and 10mA LDO
Electrical Characteristics (Continued)
API9221 is tested at VDC = VUSB = 5V at an ambient temperature of +25°C unless otherwise noted.
Symbol
Parameter
Test Conditions
Min
Typ.
Max
Unit
-
125
-
°C
1.4
-
0.4
V
V
600
850
kΩ
-
0.8
V
-
4.94
-
V
-1
-
+1
%
-2.8
-
+2.8
%
-2.8
-
+2.8
%
-
20
50
mV
12
-
-
mA
INTERNAL TEMPERATURE MONITORING
NEW PRODUCT
TFOLD
Current Fold Back Threshold
LOGIC INPUT AND OUTPUT
VIH
EN Pin Logic Input HIGH
VIL
EN Pin Logic Input LOW
EN Pin Internal Pull-down
Resistance
CHG and PPR output voltage
VOL
LOW
LINEAR REGULATOR
VLDO
Output Voltage
350
REN
VREG
Voltage Regulation Accuracy
VDO
Dropout (VDC to VLDO)
ILIMIT
Current Limit
API9221
Document number: DS32204 Rev. 1 - 2
Pin Current = 10mA
Initial Accuracy, ILDO
= 10mA; TJ = +25°C
Line regulation
VDC = VLDO + 0.5V to
6.5V
TJ = -40°C to +125°C
Load regulation
ILDO = 10µA to 10mA,
VDC = VLDO + 0.5V to
6.5V
TJ = -40°C to +125°C
ILDO = 10mA, VLDO=
4.9V, VDC >
VLDO+0.5V
For ILDO = 10mA,
VDC = 5.5V
7 of 17
www.diodes.com
May 2010
© Diodes Incorporated
API9221
Car/Wall or USB Supply Input Lithium Battery Charger
with OVP USB Bypass and 10mA LDO
Functional Description
Logic Description
A Logic State Table and diagrams of timing and charge profile are given at the end of this description.
NEW PRODUCT
The battery charge function is disabled when the EN input is pulled to logic HIGH. This normally requires an
external pull-up resistor connected to the system microcontroller I/O power supply. The API9221 has an internal
resistor connected from this pin to GND, typically 600kΩ. In many applications a suitable pull-up resistor value is
100kΩ. When EN is pulled LOW or left open circuit, charging is enabled as described below.
There are two open-drain logic outputs, PPR and CHG . Each of these can use an external pull-up resistor to an
appropriate supply such as the microcontroller I/O supply, or can be left open circuit. A suitable value is 100kΩ.
Alternatively these can each be used to drive an indicator LED up to a maximum of 10mA.
The output PPR is LOW when a valid power supply voltage is present at the VDC input or at the VUSB input,
independent of EN . One of the two input voltages must be greater than the power-on threshold and less than the
overvoltage protection threshold.
The output CHG is LOW when the battery is charging, but only until the End-of-Charge (EOC) condition is
reached. Together with other conditions as described below, the voltage at the battery connection BAT is used to
control the charging current. In the EOC state, CHG is HIGH to indicate that the charging phase has completed
and the battery voltage has reached 4.2V (± 1%). In this state, the charger remains active and is able to supply
load current and top up the battery as necessary. CHG may be re-set as described below under Charge
Conditions.
Auxiliary Outputs
The USB_BYP and VDC_LDO outputs are available independently of the EN input state. This allows a host
controller to power up initially.
USB Bypass, USB_BYP
The output USB_BYP provides power from the USB input when a valid power supply voltage is present at the
VUSB input. It is current limited to 400mA (nominally). It is therefore safely limited in current and voltage within
the USB standard.
VDC Low dropout regulator VDC_LDO
This output provides a regulated 4.94V supply, up to 10mA, when a valid power supply voltage is present at the
VDC input.
Charge Conditions
Before charging can begin, one of the two input voltages must also exceed the battery voltage enough to
overcome the input-output comparator offset. When one of the supplies satisfies these conditions, and EN is
LOW, charging begins regardless of the state of the other supply. The valid input conditions are:
for VDC:
for VUSB:
VPOR < VDC < OVPVDC
VPOR < VUSB < OVPVUSB
and
and
VDC > VBAT + VOSHC
VUSB > VBAT + VOSHC
where VPOR is the rising power-on threshold voltage, and VOSHC is the rising input offset voltage relative to VBAT.
All these threshold voltages have defined hysteresis.
API9221
Document number: DS32204 Rev. 1 - 2
8 of 17
www.diodes.com
May 2010
© Diodes Incorporated
API9221
Car/Wall or USB Supply Input Lithium Battery Charger
with OVP USB Bypass and 10mA LDO
Functional Description (Continued)
When the charge current falls below IMIN, CHG goes HIGH (provided it has an external pull-up). This state is
latched and is not re-set until one of the following events occurs:
NEW PRODUCT
1. EN is driven HIGH and LOW again
2. The active supply is removed and re-applied
3. VBAT falls below the re-charge threshold of 3.9V (nominally)
Note that the outputs, BAT, USB_BYP and VDC_LDO are reverse current protected. If an external voltage higher
than the supply voltage is connected to one of these outputs, that output will be disabled.
Charging from Adapter Power (VDC pin)
The battery can be charged from an AC powered wall adapter or in-car adapter at a current of up to 1.2A using
this input pin. The maximum charge current is set by an external resistor, RIVDC connected between the IVDC and
GND pins. If VDC is greater than the power-on threshold voltage (VPOR) and less than the over-voltage protection
threshold (OVPVDC), the battery will begin to charge at a rate dependent on the battery voltage.
When VDC input is as recommended, (4.5V to 6.7V), no charge current is drawn from the VUSB input as VDC
takes precedence. Input operation below 4.5V is also possible, but the charging rate may be affected.
The resistor RIVDC determines the charge current according to
IVDC =
6820 Amp
RIVDC
For example, a resistor value of 13kΩ sets a charge current of 0.525A. The recommended IVDC setting is 100mA
to 1200mA.
The maximum charge current available may be otherwise limited by the car/wall adapter current limit, by thermal
protection within the API9221, or by the rDS(ON) of the FET in the VDC charging path. For example, if IVDC is set
to 1A, there is a voltage drop of 0.6V due the typical rDS(ON) of 600mΩ at room temperature. Therefore, the voltage
at the VDC input must be at least 4.8V to charge the battery to 4.2V in the minimum time.
The VDC input is safe from damage up to 28V.
Charging from USB Power (VUSB pin)
The battery can be charged at a current of up to 0.5A from this pin. In this case the maximum available charge
current is set by an external resistor RIUSB connected between the IUSB and GND pins. If VUSB is greater than
the power-on threshold voltage (VPOR) and less than the over-voltage protection threshold (OVPVUSB), the battery
will begin to charge at a rate dependent on the battery voltage.
The resistor RIUSB resistor determines the charge current according to
IUSB =
6820 Amp
RIUSB
API9221
Document number: DS32204 Rev. 1 - 2
9 of 17
www.diodes.com
May 2010
© Diodes Incorporated
API9221
Car/Wall or USB Supply Input Lithium Battery Charger
with OVP USB Bypass and 10mA LDO
Functional Description (Continued)
For example, a resistor value of 22kΩ sets a charge current of 0.31A.
The recommended IUSB setting is 46.5mA to 465mA.
NEW PRODUCT
The maximum charge current available may be otherwise limited by the external USB current limit, or by thermal
protection within the API9221.
The rDS(ON) of the FET in the USB charging path is typically 600mΩ at room temperature. At the IUSB limit of
465mA, there is a voltage drop of nearly 0.3V. Therefore, the voltage at the VUSB input must be at least 4.5V to
charge the battery to 4.2V in the minimum time.
The VUSB input is safe from damage up to 28V.
Trickle Charge
When the battery voltage is below the Preconditioning Threshold, VMIN, the charger is in the Trickle Charge state
and the charge current is limited to 18% of the available charge current set by RIVDC or RIUSB. If the USB charge
current is programmed to a value less than the VDC trickle charge, then this value of the USB current is used in
trickle mode (no derating).
When the battery voltage reaches VMIN, the charge current increases to 100% of the available charge current.
End-of-Charge Current
During charging, as the battery voltage approaches the regulated value of 4.2V, the charging current will begin to
decrease. Eventually the charging current settles to a value just low enough to maintain the regulated voltage.
When the current becomes less than the End-of-Charge threshold current, IMIN, the logic output CHG goes HIGH.
The threshold current is set by an external resistor connected between the IMIN and GND pins. This is
independent of whether the VDC or VUSB input is valid.
The resistor at IMIN determines the EOC threshold current according to
IMIN =
550
Amp
R IMIN
For example, a resistor value of 10kΩ sets the EOC threshold current to 55mA.
Accuracy
When the constant voltage phase has been reached, the battery is charged to 4.2V ±1%. This is the maximum
error over the ambient temperature range from -40°C to +85°C.
API9221
Document number: DS32204 Rev. 1 - 2
10 of 17
www.diodes.com
May 2010
© Diodes Incorporated
API9221
Car/Wall or USB Supply Input Lithium Battery Charger
with OVP USB Bypass and 10mA LDO
Functional Description (Continued)
Fault Summary and Protection
Overvoltage protection: If VDC is greater than OVPVDC (6.9V), the VDC charging path is turned off until VDC falls
below OVPVDC - HOVPVDC, where HOVPVDC is the OVP hysteresis. Similarly, if VUSB is greater than OVPVUSB
(5.4V), the USB charging path is turned off until VUSB falls below OVPVUSB – HOVPVUSB.
USB_BYP current limit: The USB_BYP load current is limited to 400mA (nominally).
NEW PRODUCT
USB_BYP reverse blocking: If the voltage at USB_BYP is greater than VUSB, the USB bypass path is turned off.
BAT reverse blocking: If the battery voltage is greater than either VDC or VUSB, the relevant charge path is
turned off.
VDC_LDO reverse blocking: If the voltage at VDC_LDO is greater than VDC, the linear regulator is turned off.
Thermal protection: When the junction temperature reaches 125°C, a current foldback circuit is activated. This
effectively limits the power dissipation to a safe level.
Power Supply Filtering and Stability
At each of the inputs VDC and VUSB, a local decoupling capacitor is required to be connected to GND. A
minimum value of 1µF is recommended, ceramic type X7R. (The USB standard sets an upper bound of
capacitance somewhat larger than this.)
At the linear regulator output VDC_LDO, a local decoupling capacitor is required, connected to GND. A value of
1µF is recommended, ceramic type X7R.
At the battery connection BAT, a local decoupling capacitor is required, connected to GND. A value of 1µF is
recommended, ceramic type X7R.
API9221
Document number: DS32204 Rev. 1 - 2
11 of 17
www.diodes.com
May 2010
© Diodes Incorporated
API9221
Car/Wall or USB Supply Input Lithium Battery Charger
with OVP USB Bypass and 10mA LDO
Timing Diagram
6.9V OVPVDC
OVPVDC - HOVPVDC
PO
VDC
NEW PRODUCT
5.4V OVPVUSB
OVPVUSB - HOVPVUSB
PO
VUSB
PPR
EN
ENABLED
CHG
ILDO+ICHRG
ILDO
IVDC
IUSB_BYP+ICHRG
IUSB_BYP
IUSB
VBAT
USB_BYP
4.94V
VDC_LDO
0V
PO = Power-ON
ICHRG = Battery Charging Current
API9221
Document number: DS32204 Rev. 1 - 2
12 of 17
www.diodes.com
May 2010
© Diodes Incorporated
API9221
Car/Wall or USB Supply Input Lithium Battery Charger
with OVP USB Bypass and 10mA LDO
Logic State Table
EN
X
HIGH
NEW PRODUCT
LOW
HIGH
LOW
HIGH
LOW
INPUTS
VDC INPUT
VALID*
No
Yes
Yes
No
No
Yes
Yes
VUSB INPUT
VALID*
No
No
No
Yes
Yes
Yes
Yes
PPR
CHG
Hi Z
LOW
Hi Z
Hi Z
LOW
LOW
LOW
Hi Z
LOW
LOW
LOW
Hi Z
LOW
LOW
OUTPUTS
Charging State
VDC_LDO
USB_BYP
Off
Off
On (VDC)
Off
On (VUSB)
Off
On (VDC)
Off
On
On
Off
Off
On
On
Off
Off
Off
On
On
On
On
* Valid VDC input: VPOR < VDC < OVPVDC
* Valid VUSB input: VPOR < VUSB < OVPVUSB
X = don’t care
When the charging state is On, the charge current also depends on the battery terminal voltage as described in the text.
Charging Profile Diagram
API9221
Document number: DS32204 Rev. 1 - 2
13 of 17
www.diodes.com
May 2010
© Diodes Incorporated
API9221
Car/Wall or USB Supply Input Lithium Battery Charger
with OVP USB Bypass and 10mA LDO
Ordering Information
API9221 FC G - 13
NEW PRODUCT
Device
API9221FCG-13
Notes:
Package
Green
Packing
FC :DFN4030-12
G : Green
13 : Tape & Reel
Package
Code
FC
13” Tape and Reel
Quantity
Part Number Suffix
3000/Tape & Reel
-13
Packaging
(Note 5)
DFN4030-12
5. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
Marking Information
( Top View )
XX
Y WX
Part Number
API9221FCG
API9221
Document number: DS32204 Rev. 1 - 2
XX : BF : API9221
Y : Year : 0~9
W : Week : A~Z : 1~26 week;
a~z : 27~52 week;
z : represents 52 and 53
X : A~Z : Green
Package
DFN4030-12
14 of 17
www.diodes.com
Identification Code
BF
May 2010
© Diodes Incorporated
API9221
Car/Wall or USB Supply Input Lithium Battery Charger
with OVP USB Bypass and 10mA LDO
Package Outline Dimensions (All Dimensions in mm)
0.15
TOP MARK
0.10 C
0.08 C
0.25 A
0/0.05
Side View
2X-
NEW PRODUCT
0.55/0.65
Seating Plane
C
3.95/4.05
3.2/3.4
B
A
2X-
0.3/0.4
1.6/1.8
2.95/3.05
(Pin #1 ID)
0.25 B
0.50Typ.
0.20/0.30
0.10
C A B
Bottom View
API9221
Document number: DS32204 Rev. 1 - 2
15 of 17
www.diodes.com
May 2010
© Diodes Incorporated
API9221
Car/Wall or USB Supply Input Lithium Battery Charger
with OVP USB Bypass and 10mA LDO
NEW PRODUCT
Taping Orientation (Note 6)
Notes:
6. The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf
API9221
Document number: DS32204 Rev. 1 - 2
16 of 17
www.diodes.com
May 2010
© Diodes Incorporated
API9221
Car/Wall or USB Supply Input Lithium Battery Charger
with OVP USB Bypass and 10mA LDO
IMPORTANT NOTICE
DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS
DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).
NEW PRODUCT
Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other
changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability
arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any
license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described
herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies
whose products are represented on Diodes Incorporated website, harmless against all damages.
Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized
sales channel.
Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall
indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application.
Products described herein may be covered by one or more United States, international or foreign patents pending. Product names
and markings noted herein may also be covered by one or more United States, international or foreign trademarks.
LIFE SUPPORT
Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without
the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein:
A. Life support devices or systems are devices or systems which:
1. are intended to implant into the body, or
2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided
in the labeling can be reasonably expected to result in significant injury to the user.
B.
A critical component is any component in a life support device or system whose failure to perform can be reasonably expected
to cause the failure of the life support device or to affect its safety or effectiveness.
Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or
systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements
concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems,
notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further,
Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes
Incorporated products in such safety-critical, life support devices or systems.
Copyright © 2010, Diodes Incorporated
www.diodes.com
API9221
Document number: DS32204 Rev. 1 - 2
17 of 17
www.diodes.com
May 2010
© Diodes Incorporated