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| 型号： | ADUM3070ARQZ-RL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC REG PUSH-PLL CTRLR ISO 16SSOP |
| 标准包装： | 1,000 |
| 类型： | 推挽式控制器，隔离式 |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 3.3 V ~ 24 V |
| 输入电压： | 3V，5V |
| 频率 - 开关： | 200kHz ~ 1MHz |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 供应商设备封装： | 16-QSOP |
Isolated Switching Regulator
With Integrated Feedback
Data Sheet
FEATURES
FUNCTIONAL BLOCK DIAGRAM
Isolated PWM feedback with built in compensation
V DD1
RECT
V ISO
Primary side transformer driver for up to 2.5 W output power
with 5 V input voltage
Regulated adjustable output: 3.3 V to 24 V
Up to 80% efficiency
X1
X2
ADuM3070
V REG
REG
V DD2
200 kHz to 1 MHz adjustable oscillator
Soft start function at power-up
V DDA
PRIMARY
CONVERTER/
DRIVER
SECONDARY
CONTROLLER
FB
5V
Pulse-by-pulse overcurrent protection
Thermal shutdown
2500 V rms isolation
GND 1
INTERNAL
FEEDBACK
GND 2
OC
High common-mode transient immunity: >25 kV/μs
16-lead QSOP package
High temperature operation: 105°C
APPLICATIONS
Power supply startup bias and gate drives
Isolated sensor interfaces
Process controls
GENERAL DESCRIPTION
The ADuM3070 1 isolator is a regulated dc-to-dc isolated power
supply controller with an internal MOSFET driver. The dc-to-
dc controller has an internal isolated PWM feedback from the
secondary side based on the i Coupler? chip scale transformer
technology and complete loop compensation. This eliminates
the need to use an optocoupler for feedback and compensates
the loop for stability.
NOTES
1. V DD1 IS THE POWER SUPPLY FOR THE PUSH-PULL TRANSFORMER.
2. V DDA IS THE POWER SUPPLY OF SIDE 1 OF THE ADuM3070.
Figure 1.
The ADuM3070 isolator provides a more stable output voltage and
higher efficiency compared to unregulated isolated dc-to-dc power
supplies. The fully integrated feedback and loop compensation
in a small QSOP package provides a smaller form factor than any
discrete solution. The regulated feedback provides a relatively flat
efficiency curve over the full output power range. The ADuM3070
enables a dc-to-dc converter with a 3.3 V to 24 V isolated output
voltage range from either a 5.0 V or a 3.3 V input voltage, with
an output power of up to 2.5 W.
1
Protected by U.S. Patents 5,952,849; 6,873,065; and 7075 329 B2. Other patents are pending.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ?2012 Analog Devices, Inc. All rights reserved.
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| ADUM3100BRZ | 功能描述:IC ISOLATOR DGTL 1CH ESD 8-SOIC RoHS:是 类别:隔离器 >> 数字隔离器 系列:iCoupler® 标准包装:66 系列:iCoupler® 输入 - 1 侧/2 侧:2/2 通道数:4 电源电压:3.3V，5V 电压 - 隔离:2500Vrms 数据速率:25Mbps 传输延迟:60ns 输出类型:逻辑 封装/外壳:20-SSOP（0.209"，5.30mm 宽） 供应商设备封装:20-SSOP 包装:管件 工作温度:-40°C ~ 105°C |
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