intersil ISL9204 DATA SHEET

ISL9204

Data Sheet October 4, 2005

High Input Voltage Charger

The ISL9204 is a cost-effective, fully integrated high input voltage single-cell Li-ion battery charger. This charger performs the CC/CV charge function required by Li-ion batteries. The charger accepts an input voltage up to 28V but is disabled when the input voltage exceeds the OVP threshold, minimum 10V, to prevent excessive power dissipation. The 28V rating eliminates the overvoltage protection circuit required in a low input voltage charger.

The charge current and the end-of-charge (EOC) current are programmable with external resistors. When the battery voltage is lower than a typical value of 2.8V, the charger preconditions the battery with typically 17% of the programmed charge current. When the charge current reduces to the programmable EOC current level during the CV charge phase, an EOC indication is provided by the CHG pin, which is an open-drain output. An internal thermal foldback function protects the charger from any thermal failure.

Two indication pins (PPR and CHG) allow simple interface to a microprocessor or LEDs. When no adapter is attached or when disabled, the charger draws less than 1µA leakage current from the battery.

FN9207.0

Features

• Complete Charger for Single-Cell Li-ion/Polymer Batteries

• Integrated Pass Element and Current Sensor

• No External Blocking Diode Required

• Low Component Count and Cost

• 1% Voltage Accuracy

• Programmable Charge Current

• Programmable End-of-Charge Current

• Charge Current Thermal Foldback for Thermal Protection

• Trickle Charge for Fully Discharged Batteries

• 28V Maximum Voltage for the Power Input

• Power Presence and Charge Indications

• Less than 1µA Leakage Current Off the Battery when No Input Power Attached or Charger Disabled

• Ambient Temperature Range: -40°C to 85°C

• 2x3 DFN 8 Ld Packages

• Pb-Free Plus Anneal Available (RoHS Compliant)

Ordering Information

PAR T

NUMBER

ISL9204IRZ-T (Note)

Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are 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.

PART

MARKING

04Z -40 to 85 8 Ld 2x3 DFN

TEMP.

RANGE (°C) PACKAGE

Tape and Reel (Pb-free)

PKG.

DWG. #

L8.2x3

Applications

• Mobile Phones

• Blue-Tooth Devices

•PDAs

• MP3 Players

• Stand-alone Chargers

• Other Handheld Devices

Pinout

(8 LD 2x3 DFN)

VIN

PPR

CHG

ISL9204

TOP VIEW

BAT

IREF

IMIN

GND

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.

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

ISL9204

Absolute Maximum Ratings (Reference to GND) Thermal Information

VIN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 30V

IMIN, IREF, BAT, CHG, EN, PPR. . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 7V

Recommended Operating Conditions

Ambient Temperature Range. . . . . . . . . . . . . . . . . . . .-40°C to 85°C

Maximum Supply Voltage (VIN Pin). . . . . . . . . . . . . . . . . . . . . . 28V

Operating Supply Voltage (VIN Pin). . . . . . . . . . . . . . . . 4.3V to 10V

Programmed Charge Current . . . . . . . . . . . . . . . . . 50mA to 350mA

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

NOTES:

is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See

1. θ

Tech Brief TB379.

2. For theta θ

the "case temp." location is the center of the exposed metal pad on the package underside.

Electrical Specifications Typical Values Are Tested at VIN = 5V and the Ambient Temperature at 25°C. All Maximum and Minimum

Values Are Guaranteed Under the Recommended Operating Supply Voltage Range and Ambient Temperature Range, Unless Otherwise Noted.

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS

POWER-ON RESET

Rising POR Threshold V

Falling POR Threshold V

VIN-BAT OFFSET VOLTAGE

Rising Edge V

Falling Edge V

OVER VOLTAGE PROTECTION

Over Voltage Protection Threshold V

OVP Threshold Hysteresis 200 400 500 mV

STANDBY CURRENT

BAT Pin Sink Current I

VIN Pin Supply Current I

VOLTAGE REGULATION

Output Voltage V

PMOS On Resistance r

CHARGE CURRENT (Note 5)

IREF Pin Output Voltage I

Constant Charge Current I

Trickle Charge Current I

End-of-Charge Current I

EOC Rising Threshold R

PRECONDITIONING CHARGE THRESHOLD

Preconditioning Charge Threshold Voltage

Preconditioning Voltage Hysteresis V

POR

OVP

STANDBY

VIN

DS(ON)VBAT

IREF

CHG

TRK

MIN

MINHYS

V output.

V output (Note 3)

Use PPR to indicate the comparator output (Note 4)

Charger disabled or the input is floating - - 1.0 µA

Charger disabled - 300 400 µA

Charger enabled - 500 700 µA

4.3V < V

Charge current = 20mA

MIN

= 3.0V, use PPR to indicate the comparator

BAT

= 4.0V, use CHG pin to indicate the comparator

BAT

< 10V

= 3.8V, charge current = 0.3A - 0.6 - Ω

= 3.8V 1.165 1.210 1.245 V

BAT

= 29.4kΩ, V

IREF

= 29.4kΩ, V

IREF

= 137kΩ 20 30 40 mA

IMIN

= 29.4kΩ 90 110 130 mA

IREF

Thermal Resistance (Typical, Notes 1, 2) θ

(°C/W) θJC (°C/W)

DFN Package. . . . . . . . . . . . . . . . . . . . 59 4.5

Maximum Junction Temperature (Plastic Package) . . . . . . . . 150°C

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

Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300°C

(SOIC, PLCC, etc. Lead Tips Only)

3.3 3.9 4.3 V

3.1 3.6 4.15 V

- 90 150 mV

10 50 - mV

10 10.5 13 V

4.158 4.20 4.242 V

= 2.8V - 4.0V 135 150 165 mA

BAT

= 2.4V 18 25 32 mA

BAT

2.7 2.8 2.9 V

40 100 150 mV

FN9207.0

October 4, 2005

ISL9204

Electrical Specifications Typical Values Are Tested at VIN = 5V and the Ambient Temperature at 25°C. All Maximum and Minimum

Values Are Guaranteed Under the Recommended Operating Supply Voltage Range and Ambient Temperature Range, Unless Otherwise Noted. (Continued)

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS

INTERNAL TEMPERATURE MONITORING

Charge Current Foldback Threshold (Note 6)

LOGIC INPUT AND OUTPUTS

EN Pin Logic Input High 1.3 - - V

EN Pin Logic Input Low --0.5V

EN Pin Internal Pull Down Resistance

CHG Sink Current When LOW Pin Voltage = 1V 10 20 - mA

CHG Leakage Current When HIGH V

PPR Sink Current When LOW Pin Voltage = 1V 10 20 - mA

PPR Leakage Current When HIGH V

NOTES:

3. The 4.0V V

is selected so that the CHG output can be used as the indication for the offset comparator output indication. If the V

BAT

than the POR threshold, no output pin can be used for indication.

4. For junction temperature from -40°C to120°C.

5. The charge current can be affected by the thermal foldback function if the IC under the test setup cannot dissipate the heat.

6. Guaranteed by characterization or correlation to other test.

FOLD

100 115 130 °C

100 200 400 kΩ

= 6.5V - - 1 µA

CHG

= 6.5V - - 1 µA

PPR

BAT

is lower

Typical Characteristics

4.5

4.3

4.1

3.9

3.7 CONSTANT

3.5 CURRENT

3.3

3.1

BAT VOLTAGE (V)

2.9

2.7

2.5

0 1K2K3K4K5K6K

CONSTANT VOLTAGE

TIME (S)

0.20

0.18

0.16

0.14

0.12

0.10

0.08

0.06

0.04

0.02

0.00

Ichg (A)

FIGURE 1. COMPLETE CHARGE CYCLE (130mAh BATTERY) FIGURE 2. CONSTANT VOLTAGE vs CHARGE CURRENT

4.26

4.24

4.22

4.20

(V)

4.18

BAT

4.16

4.14

4.12

4.10 0 50 100 150 200 250 300 350

VIN = 5V

= 25°C

= 12.8K

IREF

(mA)

BAT

FN9207.0

October 4, 2005

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