intersil ISL9203R5220 DATA SHEET

®

ISL9203R5220

Data Sheet January 3, 2006

Li-ion/Li Polymer Battery Charger

The ISL9203R5220 is an integrated single-cell Li-ion or
Li-polymer battery charger capable of operating with an input
voltage as low as 2.4V. This charger is designed to work with
various types of AC adapters.

The ISL9203R5220 operates as a linear charger when the
AC adapter is a voltage source. The battery is charged in a
CC/CV (constant current/constant voltage) profile. The
charge current is programmable with an external resistor up
to 1.5A. The ISL9203R5220 can also work with a current­limited adapter to minimize the thermal dissipation, in which
case the ISL9203R5220 combines the benefits of both a
linear charger and a pulse charger.

The ISL9203R5220 features charge current thermal
foldback to guarantee safe operation when the printed circuit
board is space limited for thermal dissipation. Additional
features include preconditioning of an over-discharged
battery and thermally enhanced DFN package.

FN9242.1

Features

• Complete Charger for Single-Cell Li-ion Batteries

• Very Low Thermal Dissipation

• Integrated Pass Element and Current Sensor

• No External Blocking Diode Required

• 1% Voltage Accuracy

• Programmable Current Limit up to 1.5A

• Charge Current Thermal Foldback

• Accepts Multiple Types of Adapters

• Guaranteed operation down to VIN = 2.65V after start up

• Ambient Temperature Range: -20

°C to 70°C

• Thermally-Enhanced DFN Packages

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

Typical Application Circuit

5V

Input

Floating

to Enable

C

C

TIME

1

STATUS

EN

TIME

VBATVIN

ISL9203

VSEN

GND

V2P8

IREF

R

C

2

IREF

C

3

Ordering Information

PART NUMBER

(Note)

ISL9203CRZR5220 03CZ -20 to 70 10 Ld 3x3 DFN L10.3x3

ISL9203CRZ-TR5220 10 Ld 3x3 DFN Tape and Reel

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.

PAR T

MARKING

TEMP.

RANGE (°C)

PACKAGE

(Pb-free)

PKG

DWG. #

• Handheld Devices including Medical Handhelds

• PDAs, Cell Phones and Smart Phones

• Portable Instruments, MP3 Players

• Self-Charging Battery Packs

• Stand-Alone Chargers

• USB Bus-Powered Chargers

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”

Pinout

ISL9203R5220

(3x3 DFN)

TOP VIEW

VIN

NC

STATUS

TIME

GND

1

2

3

4

5

10

VBAT

VSEN

9

IREF

8

V2P8

7

EN

6

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. 2005, 2006. All Rights Reserved.

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

ISL9203R5220

Absolute Maximum Ratings Thermal Information

Supply Voltage (VIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to 7V

Output Pin Voltage (BAT, VSEN, V2P8). . . . . . . . . . . . . -0.3 to 5.5V

Signal Input Voltage (TIME, IREF). . . . . . . . . . . . . . . . . -0.3 to 3.2V

Output Pin Voltage (STATUS) . . . . . . . . . . . . . . . . . . . . . . -0.3 to 7V

Charge Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.6A

ESD Rating

Human Body Model (Per MIL-STD-883 Method 3015.7) . . .4500V

Machine Model (Per EIAJ ED-4701 Method C-111). . . . . . . . 200V

Recommended Operating Conditions

Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . -20°C to 70°C

Supply Voltage, VIN. . . . . . . . . . . . . . . . . . . . . . . . . . . 4.3V to 6.5V

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

JA

Tech Brief TB379.

2. θ

, “case temperature” location is at the center of the exposed metal pad on the package underside. See Tech Brief TB379.

JC

Electrical Specifications Typical values are tested at VIN = 5V and 25°C Ambient Temperature, maximum and minimum values are

guaranteed over 0°C to 70°C Ambient Temperature with a supply voltage in the range of 4.3V to 6.5V, unless
otherwise noted.

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS

Thermal Resistance (Typical, Notes 1, 2) θ

(°C/W) θJC (°C/W)

JA

3x3 DFN Package . . . . . . . . . . . . . . . . 46 4

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

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

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

POWER-ON RESET

Rising VIN Threshold 3.0 3.4 4.0 V

Falling VIN Threshold 2.3 2.4 2.65 V

STANDBY CURRENT

VBAT Pin Sink Current I

STANDBY

VIN Pin Supply Current I

VIN Pin Supply Current I

VIN

VIN

VIN floating or EN = LOW - - 3.0 µA

VBAT floating and EN pulled low - 30 250 µA

VBAT floating and EN floating - 1 2 mA

VOLTAGE REGULATION

Output Voltage V

CH

4.158 4.20 4.242 V

Dropout Voltage VBAT = 3.7V, Charge current = 1A - 320 550 mV

CHARGE CURRENT

Constant Charge Current (Note 3) I

Constant Charge Current I

Trickle Charge Current I

Trickle Charge Current I

CHARGERIREF

CHARGERIREF

TRICKLE

TRICKLE

End-of-Charge Threshold I

End-of-Charge Threshold I

MIN

MIN

= 80kΩ, V

= 1.21MΩ, V

R

= 80kΩ, V

IREF

R

= 1.21MΩ, V

IREF

R

= 80kΩ 85 110 135 mA

IREF

R

= 1.21MΩ 2-30mA

IREF

= 3.7V 0.9 1.0 1.1 A

BAT

= 3.7V 33 66 100 mA

BAT

= 2.0V 85 110 135 mA

BAT

= 2.0V 2 7 15 mA

BAT

RECHARGE THRESHOLD

Recharge Voltage Threshold V

RECHRG

TRICKLE CHARGE THRESHOLD

Trickle Charge Threshold Voltage V

2

MIN

3.85 4.00 4.10 V

2.7 2.8 3.0 V

FN9242.1

January 3, 2006

ISL9203R5220

Electrical Specifications Typical values are tested at VIN = 5V and 25°C Ambient Temperature, maximum and minimum values are

guaranteed over 0°C to 70°C Ambient Temperature with a supply voltage in the range of 4.3V to 6.5V, unless
otherwise noted. (Continued)

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS

V2P8 PIN VOLTAGE

V2P8 Pin Voltage V

V2P8

TEMPERATURE MONITORING

Charge Current Foldback Threshold (Note 4) T

Current Foldback Gain (Note 5) G

FOLD

FOLD

-100-mA/°C

OSCILLATOR

C

Oscillation Period T

OSC

= 15nF 2.4 3.0 3.6 ms

TIME

LOGIC OUTPUTS

STATUS Logic Low Sink Current Pin Voltage = 0.8V 5 - - mA

STATUS Leakage Current V

VIN

= V

= 5V - - 1 µA

STATUS

EN Input Logic High 2.0 - 3.3 V

EN Input Logic Low --0.8V

EN Pin Current When Driven Low - - 100 µA

NOTES:

3. The accuracy includes all errors except the programming resistance tolerance. The actual charge current may be affected by the thermal
foldback function if the thermal dissipation capability is not enough or by the on resistance of the power MOSFET if the charger input voltage is
too close to the output voltage.

4. Guaranteed by design and characterization to be typically 100°C ±15%

5. Guaranteed by design and characterization.

2.7 2.9 3.1 V

-100- °C

Typical Operating Performance The test conditions for the Typical Operating Performance are: V

= R

R

IREF

4.2015

4.201

R

4.2005

4.2

(V)

4.1995

BAT

V

4.199

4.1985

4.198

4.1975
0 0.3 0.6 0.9 1.2 1.5

CHARGE CURRENT (A)

IREF

= 40kΩ

FIGURE 1. CHARGER OUTPUT VOLTAGE vs CHARGE

CURRENT

IMIN

= 80kΩ, V

= 3.7V, unless otherwise noted.

BAT

4.210

4.208

4.206

4.204

4.202

(V)

4.200

BAT

4.198

V

4.196

4.194

4.192

4.190
0 20 40 60 80 100 120

CHARGE CURRENT = 50mA

TEMPERATURE (°C)

FIGURE 2. CHARGER OUTPUT VOLTAGE vs TEMPERATURE

= 5V, TA = 25°C,

IN

3

FN9242.1

January 3, 2006

ISL9203R5220

Typical Operating Performance The test conditions for the Typical Operating Performance are: V

R

IREF

4.3

CHARGE CURRENT = 50mA

4.25

(V)

4.2

BAT

V

4.15

4.1

4.2 4.5 4.8 5.1 5.4 5.7 6 6.3

VIN (V)

FIGURE 3. CHARGER OUTPUT VOLTAGE vs INPUT

VOLTAGE CHARGE CURRENT IS 50mA

1.6

1.4

1.2

1.0

0.8

0.6

0.5A

0.4

CHARGE CURRENT (A)

0.2

0.0
0 20 40 60 80 100 120

1.5A

1.0A

TEMPERATURE (°C)

= R

IMIN

= 80kΩ, V

= 3.7V, unless otherwise noted. (Continued)

BAT

2.0

CHARGE CURRENT (A)

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0

2A

1.5A

3.0 3.2 3.4 3.6 3.8 4.0

FIGURE 4. CHARGE CURRENT vs OUTPUT VOLTAGE

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

0.4

CHARGE CURRENT (A)

0.2

0.0

4.3 4.5 4.7 4.9 5.1 5.3 5.5 5.7 5.9 6.1 6.3 6.5

1.5A

= 5V, TA = 25°C,

IN

1A

V

(V)

VBAT

1A

VIN (V)

0.5A

0.5A

FIGURE 5. CHARGE CURRENT vs AMBIENT TEMPERATURE FIGURE 6. CHARGE CURRENT vs INPUT VOLTAGE

2.93

2.928

)
V

(
E

2.926

G

TA
L

O

2.924

V
8

2P
V

2.922

2.92

3.5 4 4.5 5 5.5 6 6.5

V2P8 PIN LOADED WITH 2mA

V

(V)

IN

3

2.95

2.9

2.85

2.8

V2P8 VOLTAGE (V)

2.75

2.7
0246810

V2P8 LOAD CURRENT (mA)

FIGURE 7. V2P8 OUTPUT vs INPUT VOLTAGE FIGURE 8. V2P8 OUTPUT vs ITS LOAD CURRENT

4

FN9242.1

January 3, 2006

ISL9203R5220

Typical Operating Performance The test conditions for the Typical Operating Performance are: V

= R

R

IREF

700
650
600
550
500

(mΩ)

450
400

DS(ON)

r

350
300
250
200

FIGURE 9. r

1.8

1.6

1.4

1.2

1.0

0.8

0.6

LEAKAGE CURRENT (µA)

0.4

BAT

V

0.2

0.0

THERMAL FOLDBACK STARTS
NEAR 100°C

0 20406080100120

TEMPERAT URE (°C)

vs TEMPERATURE AT 3.7V OUTPUT FIGURE 10. r

DS(ON)

0 20 40 60 80 100 120

TEMPERATURE (°C)

FIGURE 11. REVERSE CURRENT vs TEMPERATURE FIGURE 12.

IMIN

= 80kΩ, V

= 3.7V, unless otherwise noted. (Continued)

BAT

420
400
380
360

(mΩ)

340
320

DS(ON)

r

300
280
260

3.0 3.2 3.4 3.6 3.8 4.0
V

vs OUTPUT VOLTAGE USING CURRENT

DS(ON)

LIMITED ADAPTERS

50

EN = GND

45

40

35

30

25

20

15

QUIESCENT CURRENT (µA)

10

IN

V

5

0

0 20406080100120

TEMPERATURE (°C)

INPUT QUIESCENT CURRENT vs TEMPERATURE

= 5V, TA = 25°C,

IN

500mA CHARGE
CURRENT, R

(V)

BAT

IREF

= 40K

32

30

EN = GND

28

26

24

22

20

18

16

14

QUIESCENT CURRENT (µA)

IN

V

12

10

3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5

VIN (V)

FIGURE 13. INPUT QUIESCENT CURRENT vs INPUT

VOLTAGE WHEN SHUTDOWN

5

1.10

1.05

1.00

0.95

0.90

QUIESCENT CURRENT (mA)

0.85

IN

V

0.80

4.3 4.6 4.9 5.2 5.5 5.8 6.1 6.4

BOTH VBAT AND EN
PINS FLOATING

VIN (V)

FIGURE 14. INPUT QUIESCENT CURRENT vs INPUT

VOLTAGE WHEN NOT SHUTDOWN

January 3, 2006

FN9242.1