ISL9220BIRTZ-T

ISL9220BIRTZ-T Datasheet

ISL9220B

Part	Datasheet
ISL9220BIRTZ-T	ISL9220BIRTZ-T (pdf)

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ISL9220B Switching Charger for 1-Cell Li-ion Batteries ISL9220B The ISL9220B is a cost-effective and versatile battery charger for 1-cell Li-Polymer based portable applications. The device features synchronous PWM technology, maximizing power efficiency, thus minimizing charge time and heat. The 1.2MHz switching frequency allows use of small external inductors and capacitors. A simple charge current programming method is provided. External resistors program the fast charge and end-of-charge currents. The two status outputs can be used to drive LEDs, or can be connected to the host processor. A programmable charge timer provides the ability to detect defective batteries, and provides a secondary method of detecting charge termination. A thermistor interface is provided for battery presence detection, and for temperature qualified charging conditions. Additional features include preconditioning of an over-discharged battery, automatic recharge, and thermally enhanced QFN package. • PDAs and Smart Phones • MP3 and Portable Media Players • Handheld GPS Devices • Digital Still Cameras • Industrial Handheld Scanners • Highly Integrated Battery Charger IC • Charges 1 Li-ion or Li-Polymer Batteries • Up to 2A Charge Current • Synchronous Buck Topology, with Integrated Power FETs • 1.2MHz Switching Frequency • Charge Voltage Accuracy • Input Current Limit Programmable with One External Resistor • Thermistor Interface for Battery Detection and Temperature Qualified Charging • Two Status Outputs • Programmable Charge Safety Timer • Short-Circuit and Thermal Protection • Small 4x4mm TQFN Package • -40°C to +85°C Operating Temperature Range Related Literature • Technical Brief TB363 “Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices SMDs ” • Technical Brief TB379 “Thermal Characterization of Packaged Semiconductor Devices” • Technical Brief TB389 “PCB Land Pattern Design and Surface Mount Guidelines for QFN Packages” Pin Configuration ISL9220B 20 LD TQFN TOP VIEW July 2, 2010 FN7652.1 CAUTION These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 \| Intersil and design is a registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. All Rights Reserved All other trademarks mentioned are the property of their respective owners. ISL9220B Pin Descriptions PIN # NAME 1 STAT2 Open-drain indication pin. In conjunction with STAT1 this pin provides a unique indication for each charging state of the cycle. This pin is capable to sink 10mA minimum current to drive an LED. EN IC enable input. Drive this pin to logic LO to enable the charger. Drive this pin to logic HI to disable the charger. Do not leave this pin floating. 3 AGND Analog ground. 4 ISET1 Charge current programing pin. Connect a resistor between this pin and the GND pin to set the charge current. 5 ISET2 End-of-charge current programing pin. Connect a resistor between this pin and the GND pin to set the end-of-charge current. 6 VBAT Battery connection pin. Connect this pin to the battery. A 10uF or larger X5R ceramic capacitor is recommended for decoupling and stability purposes. 7 ISNS Output current sense pin. Connect a current sense resistor from this pin to VBAT. No decoupling capacitor is needed at this pin. CISP Input current sense positive connection pin. Connector a sense resistor from this pin the CISN. 9 CISN Input current sense negative connection pin. Connector a sense resistor from this pin the CISP. 10, 11 VIN Input supply voltage. Connect a 4.7uF ceramic capacitor from VIN to PGND. Ordering Information PART NUMBER Notes 1, 2, 3 PART MARKING TEMPERATURE RANGE °C PACKAGE Tape & Reel Pb-Free PKG. DWG. # ISL9220BIRTZ-T 922 0BIRTZ -40 to +85 20 Ld 4x4 TQFN L20.4x4E Please refer to TB347 for details on reel specifications. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations . Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. For Moisture Sensitivity Level MSL , please see device information page for ISL9220B. For more information on MSL please see techbrief TB363. FN7652.1 July 2, 2010 ISL9220B Absolute Maximum Ratings VIN, CISP, CISN. -0.3V to 18V SW -0.7V to 18V VHI. -0.3V to 24V VBAT, ISNS -0.3V to 10V ISET1, ISET2, RTH, VBIAS, STAT1, STAT2, EN. -0.3V to 5.5V TIME. -0.3V to 2.75V Input Current VIN .2.0A Output Current SW .2.2A ESD Rating Human Body Model Tested per JESD22-A114F 2500V Machine Model Tested per EIA/JESD22-A115-A 175V Charged Device Model Tested per JES22-C101D 1500V Latch-Up Tested per JESD-78B Class 2 +85°C , Level A 100mA Thermal Information Thermal Resistance Typical °C/W °C/W 4x4 QFN Package Notes 4, 5 40 Maximum Junction Temperature Plastic Package +150°C Maximum Storage Temperature Range -65°C to +150°C Pb-free reflow profile .see link below Recommended Operating Conditions Ambient Temperature Range -40°C to +85°C Supply Voltage, VIN 4.5V to 14V Programmable Charge Current 200mA to 2A CAUTION Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. NOTES is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech Brief TB379. “case temperature” location is at the center of the exposed metal pad on the package underside. Electrical Specifications PARAMETER Typical specifications are measured at the following conditions TA = +25°C VVIN = 5V. TEST CONDITIONS Note 6 TYP Note 6 UNITS POWER-ON RESET Rising VIN Threshold Falling VIN Threshold VIN-VBAT OFFSET VOLTAGE VPOR_R VPOR_F

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ISL9220B

Switching Charger for 1-Cell Li-ion Batteries

ISL9220B

The ISL9220B is a cost-effective and versatile battery charger for 1-cell Li-Polymer based portable applications.

The device features synchronous PWM technology, maximizing power efficiency, thus minimizing charge time and heat. The 1.2MHz switching frequency allows use of small external inductors and capacitors.

A simple charge current programming method is provided. External resistors program the fast charge and end-of-charge currents.

The two status outputs can be used to drive LEDs, or can be connected to the host processor.

A programmable charge timer provides the ability to detect defective batteries, and provides a secondary method of detecting charge termination.

A thermistor interface is provided for battery presence detection, and for temperature qualified charging conditions.

Additional features include preconditioning of an over-discharged battery, automatic recharge, and thermally enhanced QFN package.
• PDAs and Smart Phones
• MP3 and Portable Media Players
• Handheld GPS Devices
• Digital Still Cameras
• Industrial Handheld Scanners
• Highly Integrated Battery Charger IC
• Charges 1 Li-ion or Li-Polymer Batteries
• Up to 2A Charge Current
• Synchronous Buck Topology, with Integrated Power

FETs
• 1.2MHz Switching Frequency
• Charge Voltage Accuracy
• Input Current Limit Programmable with One External

Resistor
• Thermistor Interface for Battery Detection and

Temperature Qualified Charging
• Two Status Outputs
• Programmable Charge Safety Timer
• Short-Circuit and Thermal Protection
• Small 4x4mm TQFN Package
• -40°C to +85°C Operating Temperature Range

Related Literature
• Technical Brief TB363 “Guidelines for Handling and Processing Moisture Sensitive Surface Mount Devices SMDs ”
• Technical Brief TB379 “Thermal Characterization of Packaged Semiconductor Devices”
• Technical Brief TB389 “PCB Land Pattern Design and Surface Mount Guidelines for QFN Packages”

Pin Configuration

ISL9220B 20 LD TQFN

TOP VIEW

July 2, 2010 FN7652.1

CAUTION These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil and design is a registered trademark of Intersil Americas Inc.

Copyright Intersil Americas Inc. All Rights Reserved

All other trademarks mentioned are the property of their respective owners.

ISL9220B

Pin Descriptions

PIN # NAME
1 STAT2 Open-drain indication pin. In conjunction with STAT1 this pin provides a unique indication for each charging state of the cycle. This pin is capable to sink 10mA minimum current to drive an LED.

EN IC enable input. Drive this pin to logic LO to enable the charger. Drive this pin to logic HI to disable the charger.

Do not leave this pin floating.
3 AGND Analog ground.
4 ISET1 Charge current programing pin. Connect a resistor between this pin and the GND pin to set the charge current.
5 ISET2 End-of-charge current programing pin. Connect a resistor between this pin and the GND pin to set the end-of-charge current.
6 VBAT Battery connection pin. Connect this pin to the battery. A 10uF or larger X5R ceramic capacitor is recommended for decoupling and stability purposes.
7 ISNS Output current sense pin. Connect a current sense resistor from this pin to VBAT. No decoupling capacitor is needed at this pin.

CISP Input current sense positive connection pin. Connector a sense resistor from this pin the CISN.
9 CISN Input current sense negative connection pin. Connector a sense resistor from this pin the CISP.
10, 11 VIN Input supply voltage. Connect a 4.7uF ceramic capacitor from VIN to PGND.
Ordering Information

PART NUMBER Notes 1, 2, 3

PART MARKING

TEMPERATURE RANGE °C

PACKAGE Tape & Reel

Pb-Free

PKG. DWG. #

ISL9220BIRTZ-T
922 0BIRTZ
-40 to +85
20 Ld 4x4 TQFN

L20.4x4E

Please refer to TB347 for details on reel specifications.

These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations . Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

For Moisture Sensitivity Level MSL , please see device information page for ISL9220B. For more information on MSL please see techbrief TB363.

FN7652.1

July 2, 2010

ISL9220B

Absolute Maximum Ratings

VIN, CISP, CISN. -0.3V to 18V SW -0.7V to 18V VHI. -0.3V to 24V VBAT, ISNS -0.3V to 10V ISET1, ISET2, RTH, VBIAS, STAT1, STAT2, EN. -0.3V to 5.5V TIME. -0.3V to 2.75V Input Current VIN .2.0A Output Current SW .2.2A ESD Rating

Human Body Model Tested per JESD22-A114F 2500V Machine Model Tested per EIA/JESD22-A115-A 175V Charged Device Model Tested per JES22-C101D 1500V Latch-Up Tested per JESD-78B Class 2 +85°C , Level A 100mA

Thermal Information

Thermal Resistance Typical
°C/W °C/W
4x4 QFN Package Notes 4, 5 40

Maximum Junction Temperature Plastic Package +150°C

Maximum Storage Temperature Range -65°C to +150°C

Pb-free reflow profile .see link below

Recommended Operating Conditions

Ambient Temperature Range -40°C to +85°C Supply Voltage, VIN 4.5V to 14V Programmable Charge Current 200mA to 2A

CAUTION Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty.

NOTES is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach”
features. See Tech Brief TB379. “case temperature” location is at the center of the exposed metal pad on the package underside.

Electrical Specifications

PARAMETER

Typical specifications are measured at the following conditions TA = +25°C VVIN = 5V.

TEST CONDITIONS

Note 6 TYP Note 6 UNITS

POWER-ON RESET

Rising VIN Threshold Falling VIN Threshold VIN-VBAT OFFSET VOLTAGE

VPOR_R VPOR_F

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived ISL9220BIRTZ-T Datasheet file may be downloaded here without warranties.

Datasheet ID: ISL9220BIRTZ-T 639203