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参数资料
| 型号： | L6924U013 |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PQCC16 |
| 封装： | 3 X 3 MM, ROHS COMPLIANT, VFQFPN-16 |
| 文件页数： | 25/37页 |
| 文件大小： | 789K |
| 代理商： | L6924U013 |
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L6924U
Additional applications information
Doc ID 14716 Rev 2
31/37
Figure 25.
Demonstration board schematic
Table 7.
Demonstration board components description
Name
Value
Description
R1
24 k
Ω AC mode fast-charge current resistor. Used to set the charging current in AC mode.
R2
24 k
Ω
USB mode fast-charge current resistor. Used to set the charging current in USB
mode.
R3
3.3 k
Ω
End of Charge current resistor. Used to set the termination current and, as a “gas
gauge” when measuring the voltage across on it.
R4
1 k
Ω
Pull up resistor. Connected between VREF and TH pin.
R5
1 k
Ω
Pull up resistor. To be used when the ST1 is connected to a LED
R6
1 k
Ω
Pull up resistor. To be used when the ST2 is connected to a LED.
RT1
470
Ω
If a NTC is not used, a half value of R4 must be mounted to keep the TH voltage in
the correct window.
C1
1 F
Input capacitor.
C2
4.7 F
Output capacitor.
C3
10 nF
TMAX capacitor. Used to set the maximum charging time.
C4
1 nF
VREF filter capacitor.
D1
GREEN ST1 LED.
D2
RED
ST2 LED.
J1
ST2 jumper. Using to select the LED or the external microcontroller.
J2
ST1 jumper. Using to select the LED or the external microcontroller.
J3
SD jumper. If open, the device is in shutdown mode; when closed, the device starts
to work.
J4
Low power/ high power USB mode selection jumper.
J5
AC/USB mode selection jumper.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| L6924U013TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:USB compatible battery charger system with integrated power switch for Li-Ion/Li-Polymer |
| L6924UTR | 功能描述:电池管理 Battery Charger USB Compatible RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| L6925 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS STEP DOWN REGULATOR |
| L6925013TR | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS STEP DOWN REGULATOR |
| L6925D | 功能描述:直流/直流开关调节器 Synchronous Step-Dwn RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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