参数资料
| 型号： | ISL6422ERZ-T |
| 厂商： | Intersil |
| 文件页数： | 7/19页 |
| 文件大小： | 0K |
| 描述： | IC VREG DUAL LNB W/I2C 40-QFN |
| 标准包装： | 4,000 |
| 应用： | 转换器，卫星信号接收机顶盒设计 |
| 输入电压： | 8 V ~ 14 V |
| 输出数： | 2 |
| 输出电压： | 13.3 V ~ 18.3 V，14.3 V ~ 19.3 V |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-VFQFN 裸露焊盘 |
| 供应商设备封装： | 40-QFN（6x6） |
| 包装： | 带卷 (TR) |
ISL6422
Electrical Specifications
V CC = 12V, T A = -20°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C. EN1 = EN2 = H,
VTOP1 = VTOP2 = L, ENT1 = ENT2 = L, DCL = L, DSQIN1 = DSQIN2 = L, I OUT = 12mA, unless otherwise
noted. See “ISL6422 Software Description” on page 12 for I 2 C access to the system. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
TXT1 AND TXT2, EXTM1 AND EXTM2, SELVTOP1 AND SELVTOP2, ADDR0 AND ADDR1 INPUT PINs (Note 8)
Asserted LOW
Asserted HIGH
Input Current
CURRENT SENSE (CS pin)
1.7
25
0.8
V
V
μ A
Input Bias Current
I BIAS
700
nA
Overcurrent Threshold
V CS
Static current mode, DCL = H
325
450
500
mV
ERROR AMPLIFIER
Open Loop Voltage Gain
Gain Bandwidth Product
A OL
GBP
88
14
dB
MHz
PWM
Maximum Duty Cycle
Minimum Pulse Width
90
93
20
%
ns
OSCILLATOR
Oscillator Frequency
f o
Fixed at (20) (f tone )
396
440
484
kHz
Thermal Shutdown
Temperature Shutdown Threshold
Temperature Shutdown Hysteresis
FLT
150
20
°C
°C
FLT (released)
FLT (asserted)
V O = 6V
I SINK = 3.2mA (1.5k pull-up resistor to 5V)
10
0.4
μA
V
NOTES:
5. Internal digital soft-start.
6. The EXTM1 and EXTM2, SELVTOP1 and SELVTOP2, TXT1 and TXT2, and ADDR0 and ADDR1 pins have 200k internal pull-downs.
7. On exceeding this dynamic back current limit threshold for a period of 100μs, the device enters the dynamic current limit mode, and the BCF I 2 C
bit is set. The dynamic back current limit duty during a BCF is ON = 100μs or OFF = 5ms.
8. In the dynamic back current limit mode, the output is ON for 20ms and OFF for 900ms, but remains continuously ON in the Static mode. When
tone is ON, the minimum current limit is 50mA lower than the values indicated in the table. While in the dynamic mode of current limit, the trip
level is momentarily increased to 990mA during the 20ms ON time to facilitate recovery from overload conditions.
7
FN9190.2
August 10, 2007
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相关代理商/技术参数 |
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|---|---|
| ISL6422EVEZ | 功能描述:电流型 PWM 控制器 DL LNB SUPPLY + CONT VAGEG W/I2C RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| ISL6422EVEZ-T | 功能描述:电流型 PWM 控制器 DL LNB SUPPLY + CONT VAGEG W/I2C RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| ISL6423BERZ | 功能描述:电流型 PWM 控制器 SINGLE LNB SUPPLY + CONTROL VAGEG W/I2C RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| ISL6423BERZ-T | 功能描述:电流型 PWM 控制器 SINGLE LNB SUPPLY + CONTROL VAGEG W/I2C RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| ISL6423BEVEZ | 功能描述:电流型 PWM 控制器 SINGLE LNB SUPPLY + CONTROL VAGEG W/I2C RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
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