ISL88731A Datasheet PDF - Intersil Corporation


www.Datasheet-PDF.com

ISL88731A
Intersil Corporation

Part Number ISL88731A
Description SMBus Level 2 Battery Charger
Page 23 Pages

ISL88731A datasheet pdf
View PDF for PC
ISL88731A pdf
View PDF for Mobile


No Preview Available !

SMBus Level 2 Battery Charger
ISL88731A
The ISL88731A is a highly integrated Lithium-ion battery
charger controller, programmable over the SMBus system
management bus (SMBus). The ISL88731A is intended to be
used in a smart battery charger (SBC) within a smart battery
system (SBS) that throttles the charge power such that the
current from the AC-adapter is automatically limited. High
efficiency is achieved with a DC/DC synchronous-rectifier buck
converter, equipped with diode emulation for enhanced light
load efficiency and system bus boosting prevention. The
ISL88731A charges one to four Lithium-ion series cells, and
delivers up to 8A charge current. Integrated MOSFET drivers
and bootstrap diode result in fewer components and smaller
implementation area. Low offset current-sense amplifiers
provide high accuracy with 10mΩ sense resistors. The
ISL88731A provides 0.5% end-of-charge battery voltage
accuracy.
The ISL88731A provides a digital output that indicates the
presence of the AC-adapter as well as an analog output which
indicates the adapter current within 4% accuracy.
The ISL88731A is available in a small 5mmx5mm 28 Ld thin
(0.8mm) QFN package. An evaluation kit is available to reduce
design time. The ISL88731A is available in Pb-Free packages.
Pin Configuration
ISL88731A
(28 LD TQFN)
TOP VIEW
Features
• 0.5% Battery Voltage Accuracy
• 3% Adapter Current Limit Accuracy
• 3% Charge Current Accuracy
• SMBus 2 Wire Serial Interface
• Battery Short Circuit Protection
• Fast Response for Pulse-Charging
• Fast System-Load Transient Response
• Monitor Outputs
- Adapter Current (3% Accuracy)
- AC-Adapter Detection
• 11-Bit Battery Voltage Setting
• 6 Bit Charge Current/Adapter Current Setting
• 8A Maximum Battery Charger Current
• 11A Maximum Adapter Current
• +8V to +28V Adapter Voltage Range
• Pb-Free (RoHS compliant)
Applications
• Notebook Computers
• Tablet PCs
• Portable Equipment with Rechargeable Batteries
Ordering Information
28 27 26 25 24 23 22
NC 1
21 VDDP
ACIN 2
20 LGATE
VREF 3
19 PGND
ICOMP 4
NC 5
18 CSOP
17 CSON
VCOMP 6
NC 7
16 NC
15 VFB
8 9 10 11 12 13 14
PART
NUMBER
(Notes 1, 2, 3)
PART
MARKING
TEMP
RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL88731AHRZ ISL887 31AHRZ -10 to +100 28 Ld 5x5 TQFN L28.5x5B
NOTES:
1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on
reel specifications.
2. 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.
3. For Moisture Sensitivity Level (MSL), please see device information
page for ISL88731A. For more information on MSL please see
techbrief TB363.
June 8, 2011
FN6738.3
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Copyright Intersil Americas Inc. 2008, 2009, 2011. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.



No Preview Available !

ISL88731A
DCIN
VCC
VDDSMB
SDA
SCL
CSSP
CSSN
ICOMP
CSOP
CSON
VFB
VCOMP
11
6
SMBUS
6
DACV
DACS
DACI
EN
DACV
DACS
DACI
LINEAR
REGULATOR
VDDP
REFERENCE
REF +
-
LEVEL
SHIFTER
20x
-
GMS
DACS +
LEVEL
SHIFTER
20x
DACI
-
GMI
+
DACV +
GMV
-
500k 100k
EN
BUFF
EN
CSO
DC/DC
CONVERTER
LVB LVB
CSSP
FIGURE 1. FUNCTIONAL BLOCK DIAGRAM
VREF
ACOK
ACIN
ICM
BOOT
UGATE
PHASE
VDDP
LGATE
PGND
GND
AC ADAPTER
RS1
TO SYSTEM
AGND
2
CSSP
ACIN
DCIN
CSSN
UGATE
PHASE
ISL88731A
BOOT
LGATE
ICOMP
VCOMP
VDDP
CSOP
CSON
VFB
PGND
VREF
ACOK
ICM
SDA
SCL
VCC
GND
VDDSMB
AGND
FIGURE 2. TYPICAL APPLICATION CIRCUIT
RS2
TO BATTERY
PGND
FN6738.3
June 8, 2011



No Preview Available !

ISL88731A
Absolute Maximum Ratings
DCIN, CSSP, CSSN, CSOP, CSON, VFB . . . . . . . . . . . . . . . . . . . -0.3V to +28V
CSSP-CSSN, CSOP-CSON, PGND-GND . . . . . . . . . . . . . . . . . . -0.3V to +0.3V
PHASE to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -6V to +30V
BOOT to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +33V
BOOT to PHASE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
UGATE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . PHASE - 0.3V to BOOT +0.3V
LGATE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PGND - 0.3V to VDDP +0.3V
ICOMP, VCOMP, VREF, to GND . . . . . . . . . . . . . . . . . . . . . -0.3V to VCC +0.3V
VDDSMB, SCL, SDA, ACIN, ACOK . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6V
VDDP, ICM, VCC to GND, VDDP to PGND . . . . . . . . . . . . . . . . . . -0.3V to +6V
Thermal Information
Thermal Resistance (Typical, Notes 4, 5) θJA (°C/W) θJC (°C/W)
QFN Package . . . . . . . . . . . . . . . . . . . . . . . .
36
6
Junction Temperature Range . . . . . . . . . . . . . . . . . . . . . . . -55°C to +150°C
Operating Temperature Range . . . . . . . . . . . . . . . . . . . . . . -10°C to +100°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
4. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379
5. For θJC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications DCIN = CSSP = CSSN = 18V, CSOP = CSON = 12V, VDDP = 5V, BOOT-PHASE = 5.0V, GND = PGND = 0V,
CVDDP = 1µF, IVDDP = 0mA, TA = -10°C to +100°C. Boldface limits apply over the operating temperature range, -10°C to +100°C.
PARAMETER
CONDITIONS
MIN MAX
(Note 6) TYP (Note 6) UNITS
CHARGE VOLTAGE REGULATION
Battery Full Charge Voltage and Accuracy
ChargeVoltage = 0x41A0
16.716 16.8 16.884 V
-0.5 0.5 %
ChargeVoltage = 0x3130
12.529 12.592 12.655 V
-0.5 0.5 %
ChargeVoltage = 0x20D0
8.350 8.4 8.450 V
-0.6 0.6 %
ChargeVoltage = 0x1060
4.163 4.192 4.221 V
-0.7 0.7 %
Battery Undervoltage Lockout Trip Point for Trickle VFB rising
Charge
2.55 2.7 2.85 V
Battery Undervoltage Lockout Trip Point Hysteresis
100 250 400 mV
CHARGE CURRENT REGULATION
CSOP to CSON Full-Scale Current-Sense Voltage
78.22 80.64 83.06 mV
Charge Current and Accuracy
RS2 = 10mΩ (see Figure 2)
ChargingCurrent = 0x1f80
7.822
-3
8.064
8.306
3
A
%
RS2 = 10mΩ (see Figure 2)
ChargingCurrent = 0x0f80
3.809
-4
3.968
4.126
4
A
%
RS2 = 10mΩ (see Figure 2)
ChargingCurrent = 0x0080
64 128 220 mA
Charge Current Gain Error
Based on charge current = 128mA and 8.064A
-1.6 1.4 %
CSOP/CSON Input Voltage Range
0 19 V
3 FN6738.3
June 8, 2011



No Preview Available !

ISL88731A
Electrical Specifications DCIN = CSSP = CSSN = 18V, CSOP = CSON = 12V, VDDP = 5V, BOOT-PHASE = 5.0V, GND = PGND = 0V,
CVDDP = 1µF, IVDDP = 0mA, TA = -10°C to +100°C. Boldface limits apply over the operating temperature range, -10°C to +100°C. (Continued)
PARAMETER
CONDITIONS
MIN MAX
(Note 6) TYP (Note 6) UNITS
Battery Quiescent Current
Adapter Quiescent Current
INPUT CURRENT REGULATION
Adapter present, not charging,
ICSOP + ICSON + IPHASE + ICSSP + ICSSN + IFB
VPHASE = VCSON = VCSOP = VDCIN = 19V, VACIN = 5V
Adapter Absent
ICSOP + ICSON + IPHASE + ICSSP + ICSSN + IFB
VPHASE = VCSON = VCSOP = 19V, VDCIN = 0V
IDCIN+ICSSP+ICSSN
VADAPTER = 8V to 26V, VBATTERY 4V to 16.8V
135 400 µA
-1 0.2 4 µA
3 10 mA
CSSP to CSSN Full-Scale Current-Sense Voltage CSSP = 19V
106.7 110 113.3 mV
Input Current Accuracy
RS1 = 10mΩ (see Figure 2)
Adapter Current = 11004mA or 3584mA
-3 3 %
RS1 = 10mΩ (see Figure 2)
Adapter Current = 2048mA
-5 5 %
Input Current Limit Gain Error
Based on InputCurrent = 1024mA and 11004mA
-1.5
1.5 %
Input Current Limit Offset
-1 1 mV
CSSP/CSSN Input Voltage Range
8 26 V
ICM Gain
ICM Accuracy
ICM Max Output Current
SUPPLY AND LINEAR REGULATOR
VCSSP-CSSN = 110mV
VCSSP-CSSN = 110mV
VCSSP-CSSN = 55mV or 35mV
VCSSP-CSSN = 20mV
VCSSP-CSSN = 0.1V
20 V/V
-2.5 2.5 %
-4 4 %
-8 8 %
500 µA
DCIN, Input Voltage Range
8 26 V
VDDP Output Voltage
VDDP Load Regulation
VDDSMB Range
8.0V < VDCIN < 28V, no load
0 < IVDDP < 30mA
4.9 5.1 5.3 V
35 100 mV
2.7 5.5 V
VDDSMB UVLO Rising
2.4 2.5 2.6 V
VDDSMB UVLO Hysteresis
40 100 150 mV
VDDSMB Quiescent Current
VDDP = SCL = SDA = 5.5V
20 27 µA
V REFERENCE
VREF Output Voltage
ACOK
0 < IVREF < 300µA
3.1 3.2 3.3 V
ACOK Sink Current
ACOK Leakage Current
ACIN
VACOK = 0.4V, ACIN = 1.5V
VACOK = 5.5V, ACIN = 3.7V
28
mA
1 µA
ACIN Rising Threshold
3.1 3.2 3.3 V
ACIN Threshold Hysteresis
40 60 90 mV
ACIN Input Bias Current
-1 1 µA
SWITCHING REGULATOR
Frequency
330 400 440 kHz
4 FN6738.3
June 8, 2011




ISL88731A datasheet pdf
Download PDF
ISL88731A pdf
View PDF for Mobile


Similiar Datasheets : ISL88731 ISL88731A ISL88731C ISL88731C

Index :   0   1   2   3   4   5   6   7   8   9   A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z   

This is a individually operated, non profit site. If this site is good enough to show, please introduce this site to others.
Since 2010   ::   HOME   ::   Privacy Policy + Contact