ISL94200IRZ Intersil, ISL94200IRZ Datasheet

IC MULTI LI-ION OC PROT 24-QFN

ISL94200IRZ

Manufacturer Part Number
ISL94200IRZ
Description
IC MULTI LI-ION OC PROT 24-QFN
Manufacturer
Intersil
Datasheet

Specifications of ISL94200IRZ

Function
Over/Under Voltage Protection
Battery Type
Lithium-Ion (Li-Ion)
Voltage - Supply
5 V ~ 10 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
24-VFQFN Exposed Pad
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ISL94200IRZ
Manufacturer:
Intersil
Quantity:
20
Multi-Cell Li-ion Battery Pack OCP/Analog
Front-End
The ISL94200 is an overcurrent protection device and
analog front end for a microcontroller in a multi-cell Li-ion
battery pack. The ISL94200 supports battery pack
configurations consisting of 4-cells to 7-cells in series and
1 or more cells in parallel. The ISL94200 provides integral
overcurrent protection circuitry, short circuit protection, an
internal 3.3V voltage regulator, cell voltage monitor level
shifters, and drive circuitry for external FET devices for
control of pack charge and discharge.
Selectable overcurrent and short circuit thresholds reside in
internal RAM registers. An external microcontroller sets the
thresholds by setting register values through an I
interface. Internal registers also contain the detection delays
for overcurrent and short circuit conditions.
Using an internal analog multiplexer the ISL94200 provides
monitoring of each cell voltage plus internal and external
temperature by a separate microcontroller with an A/D
converter. Software on this microcontroller implements all
battery pack control functionality, except for overcurrent and
short circuit shutdown.
Applications
• Power Tools
• Battery Backup Systems
• E-Bikes
• Portable Test Equipment
• Medical Systems
• Hybrid Vehicle
• Military Electronics
Ordering Information
NOTE: 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.
ISL94200IRZ
PART NUMBER
(Note)
942 00IRTZ
MARKING
PART
®
1
24 Ld 4x4 QFN
PACKAGE
(Pb-free)
Data Sheet
2
L24.4x4D
C serial
DWG. #
PKG.
1-888-INTERSIL or 1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• Software Selectable Overcurrent Protection Levels and
• Automatic FET Turn-Off On Reaching External (Battery) or
• Fast Short Circuit Pack Shutdown
• Can Use Current Sense Resistor, FET r
• Four Battery-Backed Software Controlled Flags
• Allows Three Different FET Controls:
• Integrated Charge/Discharge FET Drive Circuitry With
• 10% Accurate 3.3V Voltage Regulator (Minimum 25mA
• Monitored Cell Voltage Output Stable in 100µs
• Simple I
• Sleep Operation With Programmable Negative Edge or
• <10µA Sleep Mode
• Pb-Free (RoHS compliant)
Variable Protect Detection Times
- 4 Discharge Overcurrent Thresholds
- 4 Short Crcuit Thresholds
- 4 Charge Overcurrent Thresholds
- 8 Overcurrent Delay Times (Charge)
- 8 Overcurrent Delay Times (Discharge)
- 2 Short Circuit Delay Times (Discharge)
Internal (IC) Temperature Limit
FET for Overcurrent Detection
- Back-to-Back N-Channel FETs for Charge and
- Single N-Channel Discharge FET
- Single N-Channel FET for Discharge With Separate
130µA (Typ) Turn-On Current and 180mA (Typ) Discharge
FET Turn-Off Current
Out With External NPN Transistor Having Current Gain
Of 70)
Positive Edge Wake-Up
Discharge Control
Optional (Smaller) Back-to-Back N-Channel FETs for
Charge
All other trademarks mentioned are the property of their respective owners.
2
|
July 3, 2008
C Host Interface
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2008. All Rights Reserved
ISL94200
DS(ON)
FN6718.0
, or Sense

Related parts for ISL94200IRZ

ISL94200IRZ Summary of contents

Page 1

... PART NUMBER PART PACKAGE (Note) MARKING (Pb-free) ISL94200IRZ 942 00IRTZ 24 Ld 4x4 QFN NOTE: 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) ...

Page 2

Pinout Functional Diagram VC7/VCC CELL VCELL6 VOLTAGES VCELL5 LEVEL SHIFTERS VCELL4 VCELL3 VCELL2 VCELL1 BACKUP SUPPLY VSS 2 ISL94200 ISL94200 (24 LD QFN) TOP VIEW VC7/VCC 2 VCELL6 3 VCELL5 4 NC ...

Page 3

Pin Descriptions SYMBOL VC7/VCC Battery cell 7 voltage input/VCC supply. This pin is used to monitor the voltage of this battery cell externally at pin AO. This pin also provides the operating voltage for the IC circuitry. VCELLN Battery cell ...

Page 4

... VCELLN 4 ISL94200 Thermal Information Thermal Resistance (Typical, Notes 1, 2) θ 36. QFN . . . . . . . . . . . . . . . . . . . . . . Continuous Package Power Dissipation . . . . . . . . . . . . . . . . .400mW Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to +125°C Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . .see link below - 0 0.5V http://www.intersil.com/pbfree/Pb-FreeReflow.asp SS RGO - 22. Operating Conditions - 0. <27V Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85° Supply Voltage Range (Typical 10V Operating Voltage ...

Page 5

Operating Specifications Over the recommended operating conditions unless otherwise specified. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. (Continued) PARAMETER SYMBOL OVERCURRENT/SHORT CIRCUIT PROTECTION ...

Page 6

Operating Specifications Over the recommended operating conditions unless otherwise specified. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. (Continued) PARAMETER SYMBOL Over Charge Current ...

Page 7

Operating Specifications Over the recommended operating conditions unless otherwise specified. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. (Continued) PARAMETER SYMBOL Internal Temperature Monitor ...

Page 8

Operating Specifications Over the recommended operating conditions unless otherwise specified. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. (Continued) PARAMETER SYMBOL Start Condition Setup ...

Page 9

Wake-Up Timing (WKPOL = 0) V WKUP2 WKUP PIN t WKUP WKUP BIT Wake up timing (WKPOL = 1) <t V WKUP1 WKUP PIN t WKUP WKUP BIT Change in Voltage Source, FET Control SCL BIT SDA 3 AO DFET ...

Page 10

Automatic Temperature Scan AUTO TEMP CONTROL (INTERNAL ACTIVATION) MONITOR TIME = 5ms TEMP3V PIN EXTERNAL TEMPERATURE OVER-TEMPERATURE TMP3V/13 DELAY TIME = 1ms XOT BIT Discharge Overcurrent/Short Circuit Monitor OCD V DSENSE t SCD ‘0’ DOC BIT ‘0’ ...

Page 11

Charge Overcurrent Monitor V CSENSE V OCC ‘0’ COC BIT TEMP3V OUTPUT 12V CFET OUTPUT µC TURNS ON CFE Serial Interface Timing Diagrams Bus Timing SCL t SU:STA t HD:STA SDA (INPUT TIMING) SDA (OUTPUT TIMING) Symbol Table WAVEFORM INPUTS ...

Page 12

Registers ADDR REGISTER READ/WRITE 00H Config/Op Read only Status 01H Operating Read only Status (Note 10) 02H Not Used Read/Write 03H Analog Out Read/Write 04H FET Control Read/Write 05H Discharge Set Read/Write (Write only if DISSETEN bit set) 06H Charge ...

Page 13

Status Registers BIT FUNCTION 7 RESERVED Reserved for future expansion. 6 RESERVED Reserved for future expansion Indicates the device is an ISL94200. This bit is set in the chip and cannot be changed. Single AFE 4 WKUP This ...

Page 14

Control Registers TABLE 4. ANALOG OUT CONTROL REGISTER (ADDR: 03H) BITS FUNCTION 7 UFLG1 User Flag 1 6 UFLG0 User Flag 0 5:4 RESERVED BIT 3 BIT 2 AO3 AO2 ...

Page 15

TABLE 6. DISCHARGE SET CONFIGURATION REGISTER (ADDR: 05H) SETTING Bit 7 DENOCD Turn off automatic OC discharge control BIT 6 BIT 5 OCDV1 OCDV0 Bit 4 DENSCD Turn off automatic SC discharge ...

Page 16

TABLE 7. CHARGE/TIME SCALE CONFIG REGISTER (ADDR: 06H) SETTING Bit 7 DENOCC Turn off automatic OC charge control BIT 6 BIT 5 OCCV1 OCCV0 Bit 4 SCLONG Short circuit long delay Bit ...

Page 17

BIT FUNCTION 7 FSETEN When set to “1”, allows writes to the Feature Set register. When set to “0”, prevents writes to the Feature Enable discharge set writes Set register (Addr: 07H). Default on initial power up is “0”. ...

Page 18

WKUP Pin Operation There are two ways to design a wake up of the ISL94200 active LOW connection (WKPOL = “0” - default), the device wakes up when a charger is connected to the pack. This pulls the ...

Page 19

VSS OPEN POWER FETs ISL94200 V REF LDFAIL = 1 if VMON >V VMONH ℜ≤ VMON VMON LDMONEN VSS FIGURE 4. LOAD MONITOR CIRCUIT LOAD MONITORING The load monitor function in the ISL94200 (see Figure 4) ...

Page 20

Turning off the FETs in the event of an over-temperature condition prevents continued discharge or charge of the cells when they are over heated. In the event of an automatic over-temperature condition the FETs are held off until the temperature ...

Page 21

External VMON/CFET Protection Mechanisms When there is a single charge/discharge path, a blocking diode is recommended in the VMON to P- path in ISL94200 solution. See D in Figure 7. This diode is to protect against 1 a negative voltage ...

Page 22

In the read mode, the device transmits eight bits of data, releases the SDA line, then monitor the line for an acknowledge acknowledge is detected and no stop condition is generated by the master, the device will continues ...

Page 23

Random Read SLAVE REGISTER R BYTE ADDRESS T SDA BUS Write the CHSETEN bit (Addr 8:bit 6) to “1” to enable changes to the data in ...

Page 24

POWER FAILS AND ONE OR MORE OF THE SUPPLIES, VCC, V AND V CELL3 MAIN OPERATING STATE VOLTAGE REGULATOR IS ON LOGIC AND REGISTERS ARE POWERED BY RGO CFET, DFET OUTPUTS ARE OFF. (REQUIRE AN EXTERNAL COMMAND TO TURN ON) ...

Page 25

Applications Circuits The following application circuits are ideas to consider when developing a battery-pack implementation. There are many more ways that the pack can be designed. ISL94200 0.1µF VC7/VCC VCELL6 VCELL5 VCELL4 VCELL3 VCELL2 4.7µF VCELL1 MINIMIZE LENGTH MAXIMIZE GAUGE ...

Page 26

ISL94200 0.1µF VC7/VCC VCELL6 SCL SDA VCELL5 WKUP RGC VCELL4 RGO TEMP3V VCELL3 TEMPI VCELL2 AO 4.7µF VCELL1 VMON CFET MINIMIZE LENGTH DFET MAXIMIZE GAUGE V SS DSREF OPTIONAL B- FIGURE 15. 7-CELL APPLICATION CIRCUIT SEPARATE CHARGE/DISCHARGE 26 ISL94200 500 ...

Page 27

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

Page 28

Package Outline Drawing L24.4x4D 24 LEAD QUAD FLAT NO-LEAD PLASTIC PACKAGE Rev 2, 10/06 4.00 PIN 1 INDEX AREA (4X) 0.15 TOP VIEW ( TYP ) ( TYPICAL RECOMMENDED LAND PATTERN 28 ISL94200 ...

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