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ISL6295CV

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P25
1
®
FN9074.2
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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| Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005, 2011. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
ISL6295
Low Voltage Fuel Gauge
The ISL6295 is a cost-effective, highly accurate IC that
measures, stores, and reports all of the critical parameters
required for rechargeable battery monitoring with a minimum
of external components. It precisely measures charge/
discharge current as well as voltage and temperature of a
battery pack. In addition, the ISL6295 accurately
accumulates both charge and discharge current as
independent parameters. Temperature history can also be
maintained for calculating self-discharge effects.
The ISL6295 integrates a highly accurate 16-bit (15-bit plus
sign) integrating A/D converter that performs calibrated
current measurement to within ±0.5% error. On-chip
counters precisely track battery charge/discharge and
temperature history. Also included are an on-chip voltage
regulation circuit, non-crystal time base, and on-chip
temperature sensor. The operating voltage range of the
ISL6295 is optimized to allow a direct interface to a single
cell Li-Ion/Li-Poly pack. 256 bytes of general-purpose
nonvolatile EEPROM storage are provided to store factory
programmed, measured, and user defined parameters.
Efficient communication is provided through an industry
standard SMBus/I
2
C™ compatible 2-wire communications
interface. This interface allows the host to determine
accurate battery status for effective system power
management and for communication to the end user. A
battery management solution utilizing the ISL6295 delivers
both space and total system component cost savings for a
wide variety of battery operated applications.
Features
• Measures, maintains, and reports all critical rechargeable
battery parameters with high accuracy
• Supports Lithium Ion and Lithium Polymer battery packs
• Current measurement with 16-bit (15-bit plus sign)
integrating A/D accurate to less than ±0.5% error
• Calibrated temperature measurement accurate to within
±3°C absolute using on-chip temp sensor or external
thermistor
• Accumulation of charge current, discharge current,
temperature, and voltage in independent 32-bit registers
• 256-byte nonvolatile EEPROM stores factory
programmed, measured, and user-defined parameters
• In-system offset calibration compensates for offset error in
current measurement
• Industry standard SMBus/I
2
C™ compatible 2-wire
communications interface
- SMBus V1.1 with PEC/CRC-8 communication
• -20°C to +85°C operating temperature range
• NTC pin can be configured as a thermistor input or GPIO
• GPAD pin can be configured as an independent A/D input
or GPIO
• Flexible power operating modes allow low-power
monitoring of battery conditions during system full
operating and standby conditions:
- Run: Continuous Conversion; 85µA typ.
- Sample: Sample interval from 0.5-64s @ 45µA typ.
- Sample-Sleep: Sample interval from 0.5-138s min. @
20µA typ.
• Shelf-Sleep mode reduces power consumption to pack
storage conditions to 300nA typ., with automatic wake-up
upon pack insertion.
• Pb-free plus anneal available (RoHS compliant)
Applications
• Notebook PC, PDAs, Hand Held Devices
Pinout
ISL6295 (TSSOP)
TOP VIEW
Ordering Information
PART
NUMBER
PART
MARKING
TEMP
RANGE (°C) PACKAGE
PKG.
DWG. #
ISL6295CV 6295CV -20°C to 85 8 Ld TSSOP M8.173
ISL6295CV-T 6295CV -20°C to 85 8 Ld TSSOP M8.173
ISL6295CVZ
(Note)
6295CVZ -20°C to 85 8 Ld TSSOP
(Pb-free)
M8.173
ISL6295CVZ-T
(Note)
6295CVZ -20°C to 85 8 Ld TSSOP
(Pb-free)
M8.173
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.
1
2
3
45
6
7
8
GPAD/IO1
VP
SCL
SDA
SR
GND
NTC/IO0
ROSC
Data Sheet February 8, 2011
N
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R
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C
O
M
M
E
N
DE
D
F
O
R
N
E
W
DE
S
I
G
N
S
N
O
R
E
CO
M
M
E
ND
E
D
R
E
P
L
AC
E
M
E
N
T
2
FN9074.2
February 8, 2011
Absolute Maximum Ratings
Supply Voltage V
P
. . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 10V
Input Voltage or IO Voltage . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V
Recommended Operating Conditions
Ambient Temperature Range. . . . . . . . . . . . . . . . . . . .-20°C to 85°C
Operating Supply Voltage (VP Pin) . . . . . . . . . . . . . . . . . 2.8V to 7V
Thermal Information
Thermal Resistance (Typical, Note 1) θ
JA
(°C/W)
TSSOP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Maximum Junction Temperature (Plastic Package) . . . . . . . . 120°C
Maximum Storage Temperature Range. . . . . . . . . . .-35°C to 120°C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300°C
CAUTION: Stress 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 section of this specification is not implied.
NOTE:
1. θ
JA
is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
Electrical Specifications Typical Values Are Tested at V
P
= 5V and ambient temperature is at 25°C, All Maximum and Minimum Values
Are Guaranteed Under the Recommended Operating Conditions., Unless Otherwise Noted.
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS
DC CHARACTERISTICS
Supply Voltage V
P
For SMBus and register access 2.8 7.0 V
For EEPROM write 3.3 7.0 V
For guaranteed analog parametrics 3.0 7.0 V
Supply Current Run Mode I
DD
A/D Active (Note 1) 85 120 μA
Supply Current Sample Mode I
DDINS
A/D Inactive (Notes 1, 2) 45 85 μA
Supply Current Sample - Sleep Mode I
DDSLP
Sample -Sleep Mode (Note 1) 20 40 μA
Supply Current Shelf Sleep Mode I
DDSSLP
Shelf Sleep Mode (Note 1) 400 800 nA
Input Low Voltage IO0, IO1 V
IL
0.6 V
Input High Voltage IO0, IO1 V
IH
2.4 V
GPIO Input Low Current Pull-up mode I
IL-IO0PU
7 μA
Leakage Current IO pin programmed
as outputs or inputs without pullup
I
L-IO
1 600 nA
Output low voltage for IO0, IO1 V
OL-IO
I
OL
= 0.5mA 0.4 V
Output high voltage for IO0 configured
as push-pull
V
OH-IO
I
OH
= 100μA2.1 V
Thermistor Output Current I
NTC
ROSC = 221kΩ ± 0.1% 8 13 16 μA
Input Low Voltage for SMBus pins V
IL-SMB
0.8 V
Input High Voltage for SMBus pins V
IH-SMB
2.0 5.5 V
Output Low Voltage for SMBus pins V
OL-SMB
I
PULLUP
= 4mA 0.4 V
Output High Voltage for SMBus pins V
OH-SMB
(Note 3) 2.1 5.5 V
Input leakage current SMBus pins I
LEAK-SMB
-5.0 +5.0 μA
AC CHARACTERISTICS (T
A
= -20°C to +85°C; V
P
= 3.0V to 7.0V; ROSC = 221kΩ ± 0.1%)
Internal main oscillator frequency f
RC
ROSC = 221kΩ ± 0.1% 130.8 131.5 132.2 kHz
Internal auxiliary oscillator frequency f
AUX
118 131 144 kHz
Accumulator Time Base Accuracy
(internal 2Hz clock)
f
ACC
During Run and Sample mode
(Note 3)
-0.6 +0.6 %
During Sample-Sleep mode (Note 3) -10 +10 %
Internal A/D operating clock f
A/D
(Note 3) f
RC
/4 kHz
Power-on-Reset Threshold V
POR
Voltage at VP 2.4 2.75 V
Delay to entry of Shelf-Sleep mode t
SHELF
(Shent = 1 or VP < VPtrip) and (SDA
and SCL go low)
10 ms
ISL6295
3
FN9074.2
February 8, 2011
A/D CONVERTER CHARACTERISTICS (T
A
= -20°C to +85°C; V
P
= 3.0V to 7.0V, Note 3, 4)
A/D Converter Resolution N Magnitude only (Note 5) 8 15 bits
A/D Conversion Measurement Time tconv N-bit + sign 2
(N+1)
/f
A/D
s
A/D Converter Input Voltage Range
(internal)
V
ADIN
Differential -152 +152 mV
Single-Ended 0 309 mV
Internal Temperature Accuracy T
ACC
-3 3 °K
Calibrated Voltage Measurement
Gain Error
E
VGAIN
Max deviation over supply voltage
and temperature range (assumed
ideal under the calibration condition)
0.60 %
Calibrated Current Measurement
Gain Error (with ideal ZTC current
sense resistor)
E
IGAIN
Max deviation over supply voltage
and temperature range (assumed
ideal under the calibration condition)
0.50 %
Calibrated Temperature Measurement
Gain Error (internal sensor)
E
TEMP
Max deviation over supply voltage
and temperature range (assumed
ideal under the calibration condition)
0.60 %
Calibrated ADC Offset Error E
VOFFSET
Max deviation over supply voltage
and temperature range (assumed
ideal under the calibration condition)
V
REF
= 170mV 0.30 %
V
REF
= 340mV 0.15 %
Integrated Nonlinearity Error E
INL
0.01 %
NOTES:
1. Does not include current consumption due to external loading on pins. No EEPROM access.
2. Sample mode current is specified during an A/D inactive cycle. Sample mode average current can be calculated using the formula: Average
Sample Mode Supply Current = (IDDRUN + (n-1)*IDDINS)/Ns; where Ns is the programmed sample rate.
3. Guaranteed by characterization or correlation to other test.
4. The max calibrated gain and offset errors are based on a 15-bit calibration procedure to generate the calibration factors. These calibration
factors are then applied to correct the ADC results.
5. Voltage is internal at A/D converter inputs. VSR is measured directly. VP and GPAD inputs are measured using internal level-translation circuitry
that scales the input voltage range appropriately for the converter.
Electrical Specifications Typical Values Are Tested at V
P
= 5V and ambient temperature is at 25°C, All Maximum and Minimum Values
Are Guaranteed Under the Recommended Operating Conditions., Unless Otherwise Noted. (Continued)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS
ISL6295
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P25

ISL6295CV

Mfr. #:
Buy ISL6295CV
Manufacturer:
Renesas / Intersil
Description:
Battery Management 8LD FUEL GAUGE FOR BATTERY MONITORING
Lifecycle:
New from this manufacturer.
Delivery:
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