参数资料
| 型号： | ISL6422BEVEZ |
| 厂商： | Intersil |
| 文件页数： | 7/18页 |
| 文件大小： | 0K |
| 描述： | IC VREG DUAL LNB W/I2C 38EPTSSOP |
| 标准包装： | 1,000 |
| 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： | 38-TFSOP （0.173"，4.40mm 宽）裸露焊盘 |
| 供应商设备封装： | 38-TSSOP 裸露焊盘 |
| 包装： | 管件 |
ISL6422B
Electrical Specifications
V CC = 12V, T A = -20°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C. EN1/2 = H,
VTOP1/2 = L, VBOT1/2 = L, ENT1/2 = L, DCL = L, MSEL1/2 = L, I OUT = 12mA, unless otherwise noted. See
software description section for I 2 C access to the system. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
TXT1/2, EXTM1/2, SELVTOP1/2 and ADDR0/1 INPUT PINs (Note 9)
Asserted LOW
Asserted HIGH
Input Current
-
1.7
-
-
-
25
0.8
-
-
V
V
μ A
CURRENT SENSE (CS pin )
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
(Note 6)
(Note 6)
-
-
93
14
-
-
dB
MHz
PWM
Maximum Duty Cycle
90
93
-
%
Minimum Pulse Width
(Note 6)
-
20
-
ns
OSCILLATOR
Oscillator Frequency
f o
Fixed at (20)(f tone )
396
440
484
kHz
Thermal Shutdown
Temperature Shutdown Threshold
Temperature Shutdown Hysteresis
(Note 6)
(Note 6)
-
-
150
20
-
-
FLT
FLT (released)
FLT (asserted)
V O = 6V
I SINK = 3.2mA (1.5k pull-up resistor to 5V)
-
-
-
-
10
0.4
μ A
V
NOTES:
5. Internal digital soft-start.
6. Limits established by characterization and are not production tested.
7. The EXTM1, EXTM2, SELVTOP1, SELVTOP2, TXT1, TXT2 and ADDR0, ADDR1 pins have 200k internal pull-downs
8. On exceeding this backward current limit threshold for a period of 2ms the device enters the backward dynamic current limit mode (350mA typ)
and the BCF I 2 C bit is set. The dynamic back current limit duty ratio during a BCF is ON = 2ms/OFF = 50ms. The output will remain clamped
to the fault output voltage till released. On removal of the fault condition the device returns to normal operation.
9. In the Dynamic current limit mode the output is ON for 51ms and OFF for 900ms. But remains continously ON in the Static mode. When tone is
ON the minimum current limit is 50mA lower the values indicated in the table.
7
FN6486.1
August 10, 2007
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| ISL6422BEVEZ-T | 功能描述:直流/直流开关转换器 DL LNB SUPPLY + CONT VAGEG W/I2C RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| ISL6422ERZ | 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 |
| ISL6422ERZ-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 |
| 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 |
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