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参数资料
| 型号： | SP6648EB |
| 厂商： | Exar Corporation |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR SP6648 |
| 标准包装： | 1 |
| 系列： | * |
PIN DESCRIPTION
PIN NUMBER
1
2
3
4
5
6
7
8
9
10
PIN NAME
V BATT
LBI
LBON
R LIM
SHDN
FB
GND
PGND
LX
V OUT
DESCRIPTION
Battery Voltage. The startup circuitry is powered by this pin. Battery
Voltage is used to calculate switch off time: t OFF = K OFF / (V OUT - V BATT ).
When the battery voltage drops below 0.61V the SP6648 goes into an
undervoltage lockout mode (UVLO), where the part is shut down.
Low Battery Input. LBI below 0.61V causes the SP6648 pin to pull LBON
pin down to ground. Use a resistor divider to program the low voltage
threshold for a specific battery configuration.
Low Battery Output Not. Open drain NMOS output that sinks current to
ground when LBI is below 0.61V.
Current Limit Resistor. By connecting a resistor R LIM from this pin to
ground the inductor peak current is set by I PEAK =1600/R LIM . The range for
R LIM is 9k Ω (for 180mA) to 1.K Ω (for 1.6A).
Shutdown Not. Tie this pin high to V BATT, for normal operation. Pull this
pin to ground to disable all circuitry inside the chip. In shutdown the
output voltage will float down to a diode drop below the battery voltage.
Feedback. Connect this pin to GND for fixed +3.3V operation. Connect
this pin to a resistor voltage divider between V OUT and GND for
adjustable output operation.
Ground. Connect to ground plane.
Power Ground. The inductor charging current flows out of this pin.
Inductor Switching Node. Connect one terminal of the inductor to the
positive terminal of the battery. Connect the second terminal of the
inductor to this pin. The inductor charging current flows into LX, through
the internal charging N-channel FET, and out the PGND pin.
Output Voltage. The inductor current flows out of this pin during switch
off-time. It is also used as the internal regulator voltage supply. Connect
this pin to the positive terminal of the output capacitor.
Date: 6/7/06 Rev B
SP6648 Ultra-low Quiescent Current, High Efficiency Boost Regulator
3
? 2006 Sipex Corporation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP6648ER | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Ultra-low Quiescent Current, High Efficiency Boost Regulator |
| SP6648ER/TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Ultra-low Quiescent Current, High Efficiency Boost Regulator |
| SP6648ER-L | 功能描述:DC/DC 开关控制器 Efficiency Boost Regulator RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| SP6648ER-L/TR | 功能描述:DC/DC 开关控制器 Ultra-low Quiescent High Efficiency RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| SP6648EU | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
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