参数资料
| 型号： | ISL6423BEVEZ-T |
| 厂商： | Intersil |
| 文件页数： | 7/16页 |
| 文件大小： | 0K |
| 描述： | IC VREG SGL LNB W/I2C 28-EPTSSOP |
| 标准包装： | 2,500 |
| 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： | 1 |
| 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： | 28-SOIC（0.173"，4.40mm 宽）裸露焊盘 |
| 供应商设备封装： | 28-TSSOP 裸露焊盘 |
| 包装： | 带卷 (TR) |
Electrical Specifications
V CC = 12V, T A = -20°C to +85°C, unless otherwise noted. Typical values are at T A = +25°C. EN = H, VTOP
VBOT = L, ENT = L, DCL = 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
OSCILLATOR
Oscillator Frequency
f o
Fixed at (20)(f tone )
396
440
484
kHz
Thermal Shutdown
Temperature Shutdown Threshold
Temperature Shutdown Hysteresis
-
-
150
20
-
-
°C
°C
OTFI
FLT (released)
FLT (asserted)
V O = 6V
I SINK = 3.2mA
-
-
-
-
10
0.4
μ A
V
NOTES:
5. Internal digital soft-start
6. EXTM, TXT and SELVTOP and addr 0/1 pins have 200k internal pulldown resistors.
7. 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 current limit duty ratio during a back current fault 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
8. In the Dynamic current limit mode the output is ON for 51ms and OFF for 900ms. But remains continuously ON in the Static mode. When tone
is ON the minimum current limit is 50mA lower the values indicated in the table.
Tone Waveform
ENT
I 2 C
MSEL
I 2 C
EXTM
PIN
VOUT
PIN
22kHz
22kHz
22kHz
22kHz
22kHz
22kHz
INTERNAL TONE
INTERNAL TONE
Tr = 10μs TYP
EXTERNAL TONE
Tr = 10μs TYP
RETURNS TO NOMINAL V OUT ~1 PERIOD
AFTER THE LAST EXTM RISING EDGE
T > 55μs;
NOTES:
9. The signal pin TXT changes the decoder threshold during tone transmit and receive. TTH allows threshold control through I 2 C.
10. The tone rise and fall times are not shown due to resolution of graphics. It is 10μs typ for 22kHz.
11. The EXTM pins have input thresholds of Vil(max) = 0.8V and Vih(min) = 1.7V
FIGURE 1. TONE WAVEFORM
7
FN6412.1
April 10, 2007
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| ISL6423ERZ | 功能描述:电流型 PWM 控制器 NOTCOMENDED FOR NEW DESIGN 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 |
| ISL6423ERZ-T | 功能描述:电流型 PWM 控制器 NOTCOMENDED FOR NEW DESIGN 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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| ISL6423EVEZ-T | 功能描述:电流型 PWM 控制器 NOTCOMENDED FOR NEW DESIGN 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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