- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98050 > P95020ZLLG8 (INTEGRATED DEVICE TECHNOLOGY INC) 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA124 PDF資料下載
參數(shù)資料
| 型號： | P95020ZLLG8 |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 電源管理 |
| 英文描述： | 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA124 |
| 封裝： | LLGA-124 |
| 文件頁數(shù)： | 93/137頁 |
| 文件大小： | 3533K |
| 代理商： | P95020ZLLG8 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁當前第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁第131頁第132頁第133頁第134頁第135頁第136頁第137頁
P95020 / Preliminary Datasheet
Revision 0.7.10
59
2010 Integrated Device Technology, Inc.
current limit configuration registers. If INT_ILIM (bit7) of current limit configuration register (0xA090) is 1, the current limit
is defined by I_ILIM[2:0]. If INT_ILIM is 0, the current limit is defined by GPIO4/CHRG_ILIM pin. Low stands for 500mA
current limit while high stands for 1.5A current limit. The default setting is 100mA when VSYS is not ready at start up.
When VSYS is ready, the current limit value is obtained from the internal register setting, which can be a default setting
(power up) or dynamic setting (after the external application processor programs it).
VSYS drives both the system load and the battery charger. If the combined load does not cause the switching regulator to
exceed the programmed input current limit, VSYS will track approximately 0.3V above the battery. By keeping the voltage
across the battery charger low, efficiency is optimized because power lost to the linear battery charger is minimized.
Power available to the external load is therfore optimized.
If the combined system load at VSYS is large enough to cause the switching power supply to reach the programmed input
current limit, VSYS will drop. Depending on the configuration, the battery charger will reduce its charge current when the
VSYS drop below 3.6V to enable the external load to be satisfied.
If the voltage at VBAT is below 3.3V and the load requirement does not cause the switching regulator to exceed the
programmed input current limit, VSYS will regulate at 3.6V. If the load exceeds the available power, VSYS will drop to a
voltage between 3.6V and the battery voltage. Figure 10 shows the range of possible voltages at VSYS as function of
battery voltage.
For very low battery voltage, due to limited input power, charging current will tend to pull VSYS below the 3.6V “instant-on”
voltage. If instant-on operation under low battery conditions is a requirement then DIS_INST_ON of Charger Special
Control Register (0xA094) should be set to 0. An under voltage circuit will automatic detects that VSYS is falling below 3.6V
and disable the battery charging. If maximun charge current at low battery voltage is preferred, the instant-on function
should be disabled by setting DIS_INST_ON to 1. If the load exceed the current limit at VBUS and the system is not in the
instant-on mode, the battery charger will reduce its charge current when under voltage circuit detects VSYS is falling below
3.6V.
4.2V
3.9V
3.6V
3.3V
3.0V
2.7V
2.4V
4
.2
V
3
.9
V
3
.6
V
3
.3
V
3
.0
V
2
.7
V
2
.4
V
VBAT
VSYS
4
.5
V
Figure 13
– V
SYS Regulation Curve (Tracking VBAT )
3.7
IDEAL DIODE FROM VBAT TO VSYS
The charger has and internal ideal diode as well as a controller for an optional external ideal diode. The ideal diode
controller is always on and will respond quickly whenever VSYS drops below VBAT. If the load current increases beyond the
power allowed from the switching regulator, additional power will be pulled from the battery via the ideal diode.
Furthermore, if power to VBUS (USB or wall power) is removed, then all of the application power will be provided by the
battery via the ideal diode. The ideal diode consists of a precision amplifier that enables a large on-chip P-channel
MOSFET transistor whenever the voltage at VSYS is approximately 15mV below the voltage at VBAT. The resistance of the
internal ideal diode is approximately 180m
If this is sufficient for the application, then no external components are
necessary. However, if more current is needed, an external P-channel MOSFET transistor can be added from VBAT to
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| P95020ZLLGI8 | 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA124 |
| PBL3717A | STEPPER MOTOR CONTROLLER, 1.2 A, PDIP16 |
| PC13892AJVL | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA186 |
| PC13892BJVK | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA139 |
| PC13892AJVK | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA139 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| P95021NQG | 功能描述:PMIC 解決方案 Integrates Audio, LED B/Light Pwr Mgt RoHS:否 制造商:Texas Instruments 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel |
| P95021NQG8 | 制造商:Integrated Device Technology Inc 功能描述:POWER MANAGEMENT, AUDIO & CONT 制造商:Integrated Device Technology Inc 功能描述:132-VFQFPN - Tape and Reel 制造商:Integrated Device Technology Inc 功能描述:Integrates Audio, LED B/Light Pwr Mgt |
| P950-36I | 制造商:Tripp Lite 功能描述:SERIAL ATA II SIGNAL CABLE, 2X7-PIN STRAIGHT CONNECTOR - 39" - Bulk |
| P9508- | 制造商:ROEBUCK 功能描述:ROEBUCK DISH WASHING BRUSH |
| P9-511121 | 功能描述:按鈕開關(guān) Flush Dome Solder 5A SPST-DB, SPDT-DB RoHS:否 制造商:OTTO 觸點形式: 開關(guān)功能: 電流額定值: 電壓額定值 AC: 電壓額定值 DC: 功率額定值: 安裝風(fēng)格: 照明: 照明顏色: IP 等級: 端接類型: 觸點電鍍: 執(zhí)行器: 蓋顏色: 封裝: 可燃性等級: |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。