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부품번호 | ISL88731A 기능 |
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기능 | SMBus Level 2 Battery Charger | ||
제조업체 | Intersil Corporation | ||
로고 | |||
전체 23 페이지수
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.
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
4페이지 ISL88731A
Typical Operating Performance DCIN = 20V, 3S2P Li-Battery, TA = +25°C, unless otherwise noted.
UGATE
LGATE
UGATE
PHASE
INDUCTOR
CURRENT
FIGURE 9. SWITCHING WAVEFORMS AT DIODE EMULATION
CSON/
VBATTERY
INDUCTOR
CURRENT
LGATE
PHASE
FIGURE 10. SWITCHING WAVEFORMS IN CC MODE
CSON/
VBATTERY
BATTERY
CURRENT
BATTERY
CURRENT
FIGURE 11. BATTERY REMOVAL
ADAPTER
CURRENT
SYSTEM
LOAD
BATTERY
VOLTAGE
CHARGE
CURRENT
FIGURE 13. LOAD TRANSIENT RESPONSE
7
FIGURE 12. BATTERY INSERTION
100
95
90
16.8VBATTERY
85
12.6VBATTERY
80
8.4VBATTERY
75
70 4.2VBATTERY
0 24 6 8
CHARGE CURRENT (A)
FIGURE 14. EFFICIENCY vs CHARGE CURRENT AND BATTERY
VOLTAGE (EFFICIENCY DCIN = 20V)
FN6738.3
June 8, 2011
7페이지 | |||
구 성 | 총 23 페이지수 | ||
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부품번호 | 상세설명 및 기능 | 제조사 |
ISL88731 | SMBus Level 2 Battery Charger | Intersil Corporation |
ISL88731A | SMBus Level 2 Battery Charger | Intersil Corporation |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |