Diodes API9221 User Manual

API9221

CAR/WALL or USB SUPPLY INPUT LITHIUM BATTERY

CHARGER with OVP USB BYPASS and 10mA LDO

Description

The API9221 has two supply inputs for highly integrated
portable applications, enabling charging from a USB host,
wall adapter, or car adapter.

The

pin indicates to a host controller that a safe and

PPR

valid supply is connected to either VUSB or VDC. The hig her
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

. The API9221

EN

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, R
The

reached, and is reset by

pin indicates when the termination current is

CHG

EN , power off, or battery below

3.9V. The maximum charge current can be programmed
independently via the resistors R

IUSB

and R

IVDC

The API9221 comes with several protection features. To
prevent system damage, the VUSB pin uses over voltage

NEW PRODUCT

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 fold­back 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

Pin Assignments

(Top View)

1

VDC

PPR

CHG

EN

IMIN

2
3

Exposed Pad

4
5

6

VUSB

U-DFN4030-12

IMIN

.

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

• U-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.

12

VDC_LDO

11

BAT

10

USB_BYP

9

IVDC

8

GND

7

IUSB

Typical Application Circuit

DC Input

USB Input

OFF

ON

API9221

Document number: DS32204 Rev. 2 - 2

VDC

VUSB

EN

GND

API9221

IMIN IUSB IVDC

IMIN

R

IUSB

R

VDC_LDO

BAT

USB_BYP

PPR

CHG

IVDC

R

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To Battery

I/O_VDD

To MCU

I/O_VDD

LDO Output

USB_BYP

© Diodes Incorporated

November 2011

Pin Descriptions

Name Pin # Descriptions

VDC 1

VUSB 2

PPR

NEW PRODUCT

CHG

EN

IMIN 6

IUSB 7

GND 8 Ground Ground return path.

IVDC 9

USB_BYP 10

BAT 11 Battery connector

VDC_LDO 12 LDO output

API9221

CAR/WALL or USB SUPPLY INPUT LITHIUM BATTERY

CHARGER with OVP USB BYPASS and 10mA LDO

The recommended input to this pin is 4.5V to 6.7V with a maximum safe value of
Input pin from a
wall AC/DC or car
adapter

USB Host device
input

Power present

3

signal output,
active-low

Charge indicator

4

output, active-low

Charge enable

5

input, active-low
Current setting for

end-of-charge
state

Current setting,
USB Power

Current setting,
wall or car adapter

USB Bypass
output

28V. If a sufficient voltage is detected on VDC, no charge current is taken from

the VUSB pin. Internal OVP trips at 6.9V. The input current can be programmed

with a 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 the charge current and the USB_BYP current. Decoupling with a 1μF ceramic

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

present and that current can be derived from the input. This is an open drain

output pin, which goes LOW when a valid source voltage is connected to either

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

EN

voltage falls below 3.9V or the device is power cycled or

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

600kΩ (nominally) pull-down resistor is provided, This pin normally requires a

pull up resistor when connected to a processor I/O.

The end-of-charge current is set by a resistor connected from this pin to GND.

This applies to charging from either VDC or VUSB.

The USB input maximum charging current is set by a resistor connected from this

pin to GND. This current is also limited by a thermally controlled current fold-

back circuit.

VDC input maximum charging current is set by a resistor connected from this pin

to GND. This current is also limited by a thermally controlled current fold-back

circuit.

Provides an external load path from the USB input, with current limiting. Protected

against reverse current.

Connect this pin to the positive terminal of the battery. This pin is also used to

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

supply is used. Stabilize with a 0.1F to 1F ceramic capacitor to ground.

Protected against reverse current.

is cycled. If

API9221

Document number: DS32204 Rev. 2 - 2

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Functional Block Diagram

API9221

CAR/WALL or USB SUPPLY INPUT LITHIUM BATTERY

CHARGER with OVP USB BYPASS and 10mA LDO

NEW PRODUCT

API9221

Document number: DS32204 Rev. 2 - 2

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Absolute Maximum Ratings

Symbol Parameter Rating Unit

VDC, VUSB to GND -0.3 to 28V V

USB_BYP, VDC_LDO -0.3 to 7V V

ESD Susceptibility (Note 2)

HBM Human Body Model 2 kV

MM Machine Model 200 V

Thermal Resistance (Note 3)

Symbol Parameter Rating Unit



JA

NEW PRODUCT



JC

EN

CHG

Junction to Ambient 41
Junction to Case 3.5

CAR/WALL or USB SUPPLY INPUT LITHIUM BATTERY

CHARGER with OVP USB BYPASS and 10mA LDO

, IMIN, IVDC, IUSB, BAT -0.3 to 7V

,

PPR

-0.3 to 7V

API9221

V

V

°C/W

Recommended Operating Conditions (Note 4)

Symbol Parameter Rating Unit

Ambient Temperature Range -40 to +85 °C

VUSB

VDC

I

VDC_CHRG

I

USB_CHRG

I

Notes: 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 U-DFN4030-12: Measured on approximately 1” square of 1 oz copper.

4. The device function is not guaranteed outside of the recommended operating conditions.

USB-BYP

I

LDO

Supply Voltage (VUSB) 4.5 to 5.3 V
Supply Voltage (VDC) 4.5 to 6.7 V
Typical Adapter Charge Current
Typical USB Charge Current
Typical USB Bypass Current

Typical LDO Current

0.1 to 1.2

46.5 to 465
0 to 200

0 to 10

A
mA
mA
mA

API9221

Document number: DS32204 Rev. 2 - 2

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© Diodes Incorporated

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

CHARGER POWER-ON THRESHOLDS

Rising VUSB/VDC Threshold
Falling VUSB/VDC Threshold

Rising VDC or VUSB, relative
to V

BAT

Falling VDC or VUSB, relative
to V

BAT

BAT Pin Sink Current
VDC Pin Supply Current
VUSB Pin Supply Current

VDC/VUSB Pin Supply Current

Final Output Voltage, BAT Pin

VDC Linear ON-resistance
VUSB Linear ON-resistance

VDC Pin Output Voltage
VDC Constant Current

VDC Trickle Charge Current

V

= 4.0V, use

BAT

CHG

pin to indicate the
comparator output

= 4.0V, use

V

BAT

CHG

pin to indicate the
comparator output

= HIGH or both inputs

EN

are floating

= HIGH, I

EN

= HIGH, USB_BYP

EN

LDO

= 0

disconnected

EN

= LOW, I

LDO

= 0,

USB_BYP disconnected

Load = 10mA 4.158 4.2 4.242 V
Load = 10mA
(T

= +25°C)

J

V

BAT

=3.8V, I

VDC

= 0.3A,

(TJ = +25°C)

= 3.8V, I

V

BAT

= +25°C)

(T

J

V

= 3.8V

BAT

R

= 12.4k,

IVDC

V

= 2.7V to 3.8V

BAT

= 12.4k,

R

IVDC

V

= 2.2V, given as a %

BAT

of the I

VDC_CHARGE

USB

= 0.3A,

NEW PRODUCT

VPO

R

VPO

F

INPUT VOLTAGE OFFSET

VOSHC

VOSLC

STANDBY CURRENT
I

STANDBY

I

VDC

I

VUSB

I

VDC_VUSB

VOLTAGE REGULATION

V

R

R

BATMAX

DS(ON)_VDC

DS(ON)_VUSB

CHARGE CURRENT
V

IVDC

I

VDC_CHRG

I

VDC_TRKL

API9221

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

4.174 4.2 4.226 V

- 550 - m

- 550 - m

1.22 1.25 1.28 V
450 550 600 mA

15 17 19 %

API9221

Document number: DS32204 Rev. 2 - 2

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© Diodes Incorporated

CAR/WALL or USB SUPPLY INPUT LITHIUM BATTERY

CHARGER with OVP USB BYPASS and 10mA LDO

Electrical Characteristics (cont.)

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

V

NEW PRODUCT

IUSB

I

USB_CHRG

I

USB_TRKL

I

MIN

IUSB Pin Output Voltage
VUSB Constant Current

VUSB Trickle Charge Current

DC and USB End-of-Charge
Threshold

PRECONDITIONING CHARGE THRESHOLD
V

MIN

Preconditioning Charge

Threshold Voltage
RECHARGE THRESHOLD
V

RCH

Recharge Threshold Voltage 3.8 3.9 4.0 V
PROTECTIONS
OVP
HOVP
OVP
HOVP
I

OCP

VDC

VDC

VUSB

VUSB

VDC Overvoltage Level 6.7 6.9 7.1 V

VDC Overvoltage Hysteresis - 240 340 mV

VUSB Overvoltage Level 5.3 5.4 5.55 V

VUSB Overvoltage Hysteresis - 150 200 mV

Short Circuit (USB_BYP) - 400 600 mA

BYPASS FETS

USB_R

VUSBDO

DS(ON)

Resistance VUSB to USB_BYP

Dropout VUSB to USB_BYP

V

= 3.8V

BAT

R

= 29.4k,

IUSB

V

= 2.7V to 3.8V

BAT

R

= 29.4k,

IUSB

V

= 2.2V and if

BAT

I

USB_CHRG

 I

VDC_TRKL

1.22 1.25 1.28 V
180 232 260 mA

15 17 19 %

,
then given as a % of the
I

USB_CHRG

If I

USB_CHRG

I

VDC_TRKL

R

MIN

= 10k



40 55 70 mA

2.5 2.6 2.7 V

Measured at 200mA,

4.3V < V
I

OUT

V

VUSB

< 5.3V

DC

= 150mA

> 4.3V

API9221

I

-

USB_CHRG

- 1.16 2.0 

- 200 - mV

- %

API9221

Document number: DS32204 Rev. 2 - 2

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November 2011

© Diodes Incorporated

CAR/WALL or USB SUPPLY INPUT LITHIUM BATTERY

CHARGER with OVP USB BYPASS and 10mA LDO

Electrical Characteristics (cont.)

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

INTERNAL TEMPERATURE MONITORING

T

NEW PRODUCT

FOLD

LOGIC INPUT AND OUTPUT

VIH
VIL

R

EN

V

OL

LINEAR REGULATOR

V

LDO

V

REG

VDO Dropout (VDC to V

I

LIMIT

Current Fold Back Threshold - 125 -

EN

Pin Logic Input HIGH

EN

Pin Logic Input LOW

EN

Pin Internal Pull-down

Resistance

and

CHG

LOW

Output Voltage - 4.94 - V

Voltage Regulation Accuracy

Current Limit

output voltage

PPR

LDO

)

1.4 - V

- 0.4 V
350 600 850 k

Pin Current = 10mA - 0.8 V

Initial Accuracy,
I

= 10mA; TJ = +25°C

LDO

Line regulation
V

= V

DC

TJ = -40°C to +125°C
Load regulation

I

LDO

VDC = V

= -40°C to +125°C

T

J

I

LDO

VDC > V
For I
V

DC

+ 0.5V to 6.5V

LDO

= 10µA to 10mA,

+ 0.5V to 6.5V

LDO

= 10mA, V

+0.5V

LDO

= 10mA,

LDO

= 5.5V

LDO

= 4.9V,

API9221

°C

-1 - +1 %

-2.8 - +2.8 %

-2.8 - +2.8 %

- 20 50 mV

12 - - mA

API9221

Document number: DS32204 Rev. 2 - 2

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Functional Characteristics

Logic Description

A Logic State Table and diagrams of timing and charge
profile are given at the end of this description.

The battery charge function is disabled when the
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
600k. In many applications a suitable pull-up resistor

value is 100k. When EN is pulled LOW or left open
circuit, charging is enabled as described below.

There are two open-drain logic outputs,
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
100k. Alternatively these can each be used to drive an
indicator LED up to a maximum of 10mA.

NEW PRODUCT

The output

PPR

is LOW when a valid power supply

voltage is present at the VDC input or at the VUSB input,

EN

independent of

. 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

EN

independently of the

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.

API9221

Document number: DS32204 Rev. 2 - 2

PPR

API9221

CAR/WALL or USB SUPPLY INPUT LITHIUM BATTERY

CHARGER with OVP USB BYPASS and 10mA LDO

Charge Conditions

Before charging can begin, one of the two input voltages
must also exceed the battery voltage enough to

EN

andCHG .

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overcome the input-output comparator offset. When one
of the supplies satisfies these conditions, and

EN

LOW, charging begins regardless of the state of the other
supply. The valid input conditions are:

for VDC: VPOR < VDC < OVP
for VUSB: VPOR < VUSB < OVP

and VDC > V

VDC

and VUSB > V

VUSB

BAT

+VOS

+ VOSHC

BAT

HC

where VPO
and VOS
V

. All these threshold voltages have defined

BAT

is the rising power-on threshold voltage,

R

is the rising input offset voltage relative to

HC

hysteresis.

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:

1. EN is driven HIGH and LOW again

2. The active supply is removed and re-applied

3. V

falls below the re-charge threshold of 3.9V

BAT

(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, R
GND pins. If VDC is greater than the power-on threshold

voltage (VPO
threshold (OVP

) and less than the over-voltage protection

R

VDC

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 R
according to

For example, a resistor value of 13k sets a charge
current of 0.525A. The recommended IVDC setting is
100mA to 1200mA.

connected between the IVDC and

IVDC

), the battery will begin to charge at a

determines the charge current

IVDC

6820

R

IVDC

Amp

November 2011

© Diodes Incorporated

IVDC =

is

Functional Characteristics (cont.)

API9221

CAR/WALL or USB SUPPLY INPUT LITHIUM BATTERY

CHARGER with OVP USB BYPASS and 10mA LDO

Charging from Adapter Power (VDC pin) (cont.)

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 r
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

r

of 600m at room temperature. Therefore, the

DS(ON)

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 R

IUSB

between the IUSB and GND pins. If VUSB is greater than
the power-on threshold voltage (VPO
over-voltage protection threshold (OVP

NEW PRODUCT

will begin to charge at a rate dependent on the battery

) and less than the

R

VUSB

voltage.

The resistor R

resistor determines the charge current

IUSB

according to

6820

R

Amp

IUSB

IUSB =

For example, a resistor value of 22k sets a charge
current of 0.31A.

The recommended IUSB setting is 46.5mA to 465mA.
The maximum charge current available may be otherwise

limited by the external USB current limit, or by thermal
protection within the API9221.

The R

of the FET in the USB charging path is

DS(ON)

typically 600m 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, V

state and the charge current is limited to 18% of the
available charge current set by R

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).

, the charger is in the Trickle Charge

MIN

or R

IVDC

of the

DS(ON)

connected

), the battery

. If the

IUSB

When the battery voltage reaches V

, the charge

MIN

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, I

the logic output CHG goes

MIN,

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

MIN

R

550

IMIN

I = Amp

For example, a resistor value of 10k 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.

Fault Summary and Protection

Overvoltage protection: If VDC is greater than OVP
(6.9V), the VDC charging path is turned off until VDC falls

below OVP

VDC

- HOVP

, where HOVP

VDC

is the OVP

VDC

hysteresis. Similarly, if VUSB is greater than OVP
(5.4V), the USB charging path is turned off until VUSB

falls below OVP

VUSB

– HOVP

VUSB

.

USB_BYP current limit: The USB_BYP load current is
limited to 400mA (nominally).

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.

VDC

VUSB

API9221

Document number: DS32204 Rev. 2 - 2

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CAR/WALL or USB SUPPLY INPUT LITHIUM BATTERY

CHARGER with OVP USB BYPASS and 10mA LDO

Functional Characteristics (cont.)

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.)

Timing Diagram

API9221

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.

NEW PRODUCT

VDC

VUSB

PPR

EN

CHG

IVDC

IUSB

VBAT

PO

I

LDO

I

LDO+ICHRG

6.9V OVP

5.4V OVP

PO

ENABLED

I

USB_BYP+ICHRG

I

USB_BYP

VDC

VUSB

OVP

VDC

OVP

-HOVP

-HOVP

VUSB

VDC

VUSB

USB_BYP

VDC_LDO

PO = Power-ON
I

= Battery Charging Current

CHRG

API9221

Document number: DS32204 Rev. 2 - 2

4.94V
0V

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Logic State Table

EN

X No No Hi Z Hi Z Off Off Off

HIGH Yes No LOW Hi Z Off On Off

LOW Yes No LOW LOW On (VDC) On Off

HIGH No Yes LOW Hi Z Off Off On

LOW No Yes LOW LOW On (VUSB) Off On

HIGH Yes Yes LOW Hi Z Off On On

LOW Yes Yes LOW LOW On (VDC) On On

* Valid VDC input: VPOR < VDC < OVP
* Valid VUSB input: VPOR < VUSB < OVP

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

NEW PRODUCT

VDC INPUT

VALID*

CAR/WALL or USB SUPPLY INPUT LITHIUM BATTERY

CHARGER with OVP USB BYPASS and 10mA LDO

INPUTS OUTPUTS

VUSB INPUT

VALID*

VDC

VUSB

PPR

CHG

Charging State VDC_LDO USB_BYP

API9221

API9221

Document number: DS32204 Rev. 2 - 2

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© Diodes Incorporated

Ordering Information

API9221

CAR/WALL or USB SUPPLY INPUT LITHIUM BATTERY

CHARGER with OVP USB BYPASS and 10mA LDO

API9221 FC G - 13

Package

FC : U-DFN4030-12

Device

API9221FCG-13 FC U-DFN4030-12 3000/Tape & Reel -13

Notes: 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.

Package

Code

Packaging

(Note 5)

G : Green

Quantity Part Number Suffix

PackingGreen

13 : Tape & Reel

13” Tape and Reel

Marking Information

NEW PRODUCT

( Top View )

XX

Y

W

Part Number Package Identification Code

API9221FCG U-DFN4030-12 BF

: BF : API9221

XX

Y

: Year : 0~9
: Week : A~Z : 1~26 week;

W

X

a~z : 27~52 week;

z : represents 52 and 53

: A~Z : Green

X

API9221

Document number: DS32204 Rev. 2 - 2

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© Diodes Incorporated

CAR/WALL or USB SUPPLY INPUT LITHIUM BATTERY

CHARGER with OVP USB BYPASS and 10mA LDO

Package Outline Dimensions (All Dimensions in mm)

A

A1

D
e

E

D2

b (12x)Z (4x)

E2

L (12x)

NEW PRODUCT

A3

API9221

U-DFN4030-12

Dim Min Max Typ

A 0.55 0.65 0.60
A1 0 0.05 0.02
A3 - - 0.15

b 0.20 0.30 0.25

D 3.95 4.05 4.00
D2 3.20 3.40 3.30

e - - 0.50

E 2.95 3.05 3.00
E2 1.60 1.80 1.70

L 0.30 0.40 0.35

Z - - 0.625

All Dimensions in mm

Suggested Pad Layout

Y1

Pin1

C

API9221

Document number: DS32204 Rev. 2 - 2

(All Dimensions in mm)

X2

Y (12x)

X1

Y2

X (12x)

www.diodes.com

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Dimensions

C 0.500

X 0.300
X1 2.800
X2 3.350

Y 0.600
Y1 1.750
Y2 3.400

Value

(in mm)

November 2011

© Diodes Incorporated

Taping Orientation (Note 6)

API9221

CAR/WALL or USB SUPPLY INPUT LITHIUM BATTERY

CHARGER with OVP USB BYPASS and 10mA LDO

NEW PRODUCT

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. 2 - 2

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© Diodes Incorporated

API9221

CAR/WALL or USB SUPPLY INPUT LITHIUM BATTERY

CHARGER with OVP USB BYPASS and 10mA LDO

NEW PRODUCT

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).

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 o r 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 e xpected

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 sup port 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 © 2011, Diodes Incorporated

www.diodes.com

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Document number: DS32204 Rev. 2 - 2

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© Diodes Incorporated