intersil ISL9200 DATA SHEET

®

ISL9200

Data Sheet October 4, 2005

Charging System Safety Circuit

The ISL9200 is an integrated circuit (IC) optimized to provide
a Li-ion battery redundant safety protection from failures of a
charging system. The IC monitors the input voltage, the
battery voltage, and the charge current. When any of the
three parameters exceeds its limit, the IC turns off an internal
P-channel MOSFET to remove the power from the charging
system. In addition to the above protected parameters, the
IC also monitors its own internal temperature and turns off
the P-channel MOSFET when the die temperature exceeds
140°C. Together with the battery charger IC and the
protection module in a battery pack, the charging system
using the ISL9200 has triple-level protection and is two-fault
tolerant.

The IC is designed to turn on the internal PFET slowly to
avoid inrush current at power-up but will turn off the PFET
quickly when input overvoltage is detected, in order to
remove the power before any damage occurs. The ISL9200
has a logic warning output to indicate the fault and an enable
input to allow the system to remove the input power.

Ordering Information

PAR T

PAR T #

ISL9200IRZ*
(Note)

ISL9200EVAL1 ISL9200 Evaluation Board

*Add “-T” suffix for 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.

MARKING

00Z

TEMP.

RANGE (°C) PACKAGE

-40 to 85 12 Ld 4x3 DFN
(Pb-free)

PKG.

DWG. #

L12.4x3

Typical Application Circuit

FN9241.0

Features

• Fully Integrated Protection Circuit for Three Protection
Var iable s

- User Programmable Overcurrent Protection Threshold

- Input Overvoltage Protection in Less Than 1µs

- Battery Overvoltage Protection

• High Immunity of False Triggering Under Transients

• High Accuracy Protection Thresholds

• Warning Output to Indicate the Occurrence of Faults

• Enable Input

• Thermal Enhanced DFN Package

• Pb-Free Plus Anneal Available (RoHS Compliant)

Applications

• Cell Phones

• Digital Still Cameras

• PDAs and Smart Phones

• Portable Instruments

• Desktop 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

ISL9200 (4x3 DFN)

TOP VIEW

INPUT

R

C

ILIM

VIN

VIN

1

ISL9200

ILIM

GND

OUT

VB

EN

WRN

1

ISL6292

BATTERY

CHARGER

R

VB

BATTERY

PAC K

+

NOTE: EPAD must be electrically connected to the GND pin.

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.

1

2

VIN

3

GND

4

WRN

NC

5

NC EN

6 7

Copyright © Intersil Americas Inc. 2005. All Rights Reserved.

EPAD

NC

12

11

OUT

10

OUT

9

ILIM

VB

8

ISL9200

Absolute Maximum Ratings (Reference to GND) Thermal Information

Supply Voltage (VIN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to 30V

Output and VB Pin (OUT, VB) (Note 1) . . . . . . . . . . . . . . . -0.3 to 7V

Other Pins (ILIM, WRN

, EN) . . . . . . . . . . . . . . . . . . . . . -0.3 to 5.5V

ESD Rating

Human Body Model (Per JESD22-A114-B) . . . . . . . . . . . . .3000V

Machine Model (Per EIA/JESD22 A115-A) . . . . . . . . . . . . . .200V

Recommended Operating Conditions

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

1. The maximum voltage rating for the VB pin under continuous operating conditions is 5.5V. All other pins are allowed to operate continuously at
the absolute maximum ratings.

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

2. θ

JA

Tech Brief TB379.

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

3. θ

JC

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

guaranteed over the recommended operating conditions, unless otherwise noted.

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS

POWER-ON RESET

Rising VIN Threshold V

POR Hysteresis - 100 - mV

VIN Bias Current I

VIN Bias Current When disabled 30 60 100 µA

PROTECTIONS

Input Overvoltage Protection (OVP) V

Input OVP Hysteresis - 60 100 mV

Input OVP Falling Threshold 6.55 - - V

Input OVP Propagation Delay --1µs

Overcurrent Protection I

Overcurrent Protection Blanking Time BT

Battery Overvoltage Protection Threshold V

Battery OVP Threshold Hysteresis 75 - mV

Battery OVP Falling Threshold 4.225 - - V

Battery OVP Blanking Time BT

VB Pin Leakage Current V

Over Temperature Protection Rising Threshold 140 - °C

Over Temperature Protection Falling Threshold - 90 - °C

LOGIC

Input Logic HIGH 1.5 - - V

EN

EN Input Logic LOW --0.4V

EN Internal Pull Down Resistor 100 200 400 kΩ

WRN Output Logic Low Sink 5mA current - 0.35 0.8 V

WRN Output Logic High Leakage Current - - 1 µA

POWER MOSFET

On Resistance R

POR

VIN

OVP

OCP

OCP

BOVP

BOVP

DS(ON)

When enabled 0.75 0.9 1.05 mA

VVB = 3V, R

= 4.4V - 20 nA

VB

Measured at 500mA, 4.3V < V

Thermal Resistance (Notes 2, 3) θ

(°C/W) θJC (°C/W)

JA

4x3 DFN Package . . . . . . . . . . . . . . . . 41 3.5

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

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

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

2.4 2.58 2.7 V

6.65 6.8 7.0 V

= 25kΩ 0.93 1.0 1.07 A

ILIM

- 170 - µs

4.325 4.4 4.475 V

180 - µs

< 6.5V - 250 450 mΩ

IN

2

FN9241.0

October 4, 2005

ISL9200

Pin Descriptions

VIN (Pins 1, 2)

The input power source. The VIN can withstand 30V input.

GND (Pin 3)

System ground reference.

WRN (Pin 4)

WRN is an open-drain logic output that turns LOW when any
protection event occurs.

NC (Pins 5, 6, 12)

No connection and must be left floating.

EN (Pin 7)

Enable input. Pull this pin to low or leave it floating to enable
the IC and force it to high to disable the IC.

Typical Applications

INPUT

R

C

ILIM

1

VIN

ILIM

GND

ISL9200

OUT

VB

EN

WRN

ISL6292

BATTERY

CHARGER

R

VB

BATTERY

PACK

VB (Pin 8)

Battery voltage monitoring input. This pin is connected to the
battery pack positive terminal via an isolation resistor.

ILIM (Pin 9)

Overcurrent protection threshold setting pin. Connect a
resistor between this pin and GND to set the OCP threshold.

OUT (Pins 10, 11)

Output pin.

EPAD

The exposed pad at the bottom of the DFN package for
enhancing thermal performance. Must be electrically
connected to the GND pin.

PART DESCRIPTION

R

ILIM

R

VB

+

C1 1µF/16V X5R ceramic capacitor

25kΩ

200kΩ to 1MΩ

Block Diagram

INPUT

VIN

OUT

Q

1

Q

2 Q

POR

PRE-REG

WRN

1. 2V

REF

Q

CP1

4

R

1

R

2

GND

FET

DRIV ER

LOGIC

CP2

CP3

Q

5

R

5

EN

3

EA

0.8V

R

3

R

4

ILIM

VB

BUF

I SL6292

BATT ERY

CHARGE R

R

ILIM

R

VB

+

FIGURE 1. BLOCK DIAGRAM

3

FN9241.0

October 4, 2005

ISL9200

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

R

= 25.5kΩ, RVB = 200kΩ, Unless Otherwise Noted.

ILIM

VIN (1V/div)

OUT (1V/div)

Load Current

(200mA/div)

Time: 5ms/div

FIGURE 2. CAPTURED WAVEFORMS FOR POWER-UP. THE

OUTPUT IS LOADED WITH A 10Ω RESISTOR

Time: 200ms/div

VIN (2V/div)

FIGURE 3. CAPTURED WAVEFORMS WHEN THE INPUT

WRN (5V/div)

VOLTAGE STEPS FROM 6.5V TO 10.5V

VIN (2V/div)

= 5V, TA = 25°C,

IN

VIN (2V/div)

OUT (2V/div)

Time: 2µs/div

OUT (2V/div)

WRN (5V/div)

FIGURE 4. CAPTURED WAVEFORMS WHEN THE INPUT

GRADUALLY RISES TO THE INPUT
OVERVOLTAGE THRESHOLD

VIN (2V/div)

ILIM (1V/div)

WRN (5V/div)

OUT (2V/div)

Time: 500µs/div

OUT (2V/div)

WRN (5V/div)

FIGURE 5. TRANSIENT WHEN THE INPUT VOLTAGE STEPS

FROM 7.5V TO 6.5V

Time: 20s/div

Time: 5ms/div

VIN (1V/div)

VB (1V/div)

OUT (1V/div)

WRN (5V/div)

FIGURE 6. TRANSIENT WAVEFORMS WHEN INPUT STEPS

FROM ZERO TO 9V

4

FIGURE 7. BATTERY OVERVOLTAGE PROTECTION. THE IC

IS LATCHED OFF AFTER 16 COUNTS OF
PROTECTION. VB VOLTAGE VARIES BETWEEN

4.3V TO 4.5V

FN9241.0

October 4, 2005