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| 型号： | ZXLB1600X10TC |
| 厂商： | Diodes Inc |
| 文件页数： | 12/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BST FLYBK ADJ 10MA 10MSOP |
| 标准包装： | 4,000 |
| 类型： | 升压，反激式 |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.6 V ~ 28 V |
| 输入电压： | 1.6 V ~ 5.5 V |
| 频率 - 开关： | 最高 500kHz |
| 电流 - 输出： | 10mA |
| 同步整流器： | 无 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 10-MSOP |
LAST TIME BUY
ZXLB1600
Gated mode
The ZXLB1600 contains a timing circuit that switches
the device on a few microseconds after the application
of a rising edge to EN and turns it back off again
nominally 120 s after the falling edge of EN. So, if a
lower frequency of 1kHz or less is applied to the EN pin,
the device will be gated on and off at a duty cycle (D)
corresponding to that of the input signal. The average
output voltage is then given by:
V OUT(avg) ~ 28 x D
Output voltage can be adjusted all the way down to the
input voltage by means of PWM control, but for best
results, the duty cycle range should be kept within the
specified range of 0.4 to 1. Lower duty cycles may
result in increased output ripple and non-linearity in
the relationship between duty cycle and output
voltage. If a greater control range, or reduced ripple is
required, the nominal output can be adjusted by one of
the other methods before the PWM signal is applied.
Negative output
The ZXLB1600 can be used to provide a negative
output voltage (in addition to the normal positive
output) as shown in the application circuit below. In
this circuit, the external resistors R3 an R4 are used to
set the output voltage to 22V as described in the
C2 have relatively low values in this circuit in order to
give a short time constant. This improves the
regulation of the negative voltage.
Capacitor selection
A low ESR ceramic capacitor grounded close to the
GND pin of the package is recommended at the output
of the device. Surface mount types offer the best
performance due to their lower inductance. A
minimum value of 1 F is advised, although higher
values will lower switching frequency and improve
efficiency especially at lower load currents. A higher
value will also minimize ripple when using the device
to provide an adjustable dc output voltage.
A good quality, low ESR capacitor should also be used for
input decoupling, as the ESR of this capacitor is effectively
in series with the source impedance and lowers overall
efficiency. This capacitor has to supply the relatively high
peak current to the coil and smooth the current ripple on
the input supply. A minimum value of 3.3 F is acceptable
if the input source is close to the device, but higher values
are recommended at lower input voltages, when the
source impedance is high. The input capacitor should be
mounted as close as possible to the IC.
For maximum stability over temperature, capacitors
with X7R dielectric are recommended, as these have a
much smaller temperature coefficient than other types.
previous section. These resistors and output capacitor
ISSUE 3 - SEPTEMBER 2003
SEMICONDUCTORS
12
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| ZXLD100 | 制造商:OMRON AUTOMATION AND SAFETY 功能描述:SENS HEAD RFLCTV SPOT BEAM 100MM 制造商:OMRON INDUSTRIAL AUTOMATION 功能描述:DIFFUSE RFLCT SPOT BEAM 100mm |
| ZX-LD100 | 功能描述:光电传感器 DIFFUSE RFLCT SPOT BEAM 100mm RoHS:否 制造商:Omron Industrial 感应方式:Retroreflective 感应距离:2 m 光源:Infrared LED 放大器类型: 连接:Prewired Cable 输出配置:Light ON |
| ZXLD100L | 制造商:OMRON AUTOMATION AND SAFETY 功能描述:SENS HEAD RFLCTV LINE BEAM 100MM 制造商:OMRON INDUSTRIAL AUTOMATION 功能描述:DIFFUSE RFLCT LINE BEAM 100mm |
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