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参数资料
| 型号： | ADP1822-EVAL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR ADP1822 |
| 标准包装： | 1 |
| 主要目的： | DC/DC，步降 |
| 输出及类型： | 1，非隔离 |
| 输出电压： | 1.8V |
| 电流 - 输出： | 10A |
| 输入电压： | 9 ~ 15 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 300kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | ADP1822 |
| 相关产品： | ADP1822ARQZ-R7DKR-ND - IC REG CTRLR BUCK PWM VM 24-QSOP ADP1822ARQZ-R7CT-ND - IC REG CTRLR BUCK PWM VM 24-QSOP ADP1822ARQZ-R7TR-ND - IC REG CTRLR BUCK PWM VM 24-QSOP |
PWM, Step-Down DC-to-DC Controller
with Margining and Tracking
Data Sheet
FEATURES
Wide power input voltage range: 1 V to 24 V
Chip supply voltage range: 3.7 V to 5.5 V
Wide output voltage range: 0.6 V to 85% of input voltage
1% accuracy, 0.6 V reference voltage
Output voltage margining control
Output voltage tracking
All N-channel MOSFET
300 kHz, 600 kHz, or up to 1.2 MHz synchronized frequency
No current sense resistor required
Power-good output
Programmable soft start with reverse current protection
Current-limit protection
Thermal overload protection
Overvoltage protection
Undervoltage lockout
1 μA shutdown supply current
Small, 24-lead QSOP package
APPLICATIONS
Telecommunications and networking systems
The ADP1822 regulated output can track another power supply
and can be dynamically adjusted up or down with the controller’s
margining-control inputs, making it ideal for high reliability
applications. It is well suited for a wide range of high power
applications, such as DSP power and processor core power in
telecommunications, medical imaging, high performance
servers, and industrial applications. It operates from a 3.7 V to
5.5 V supply with power input voltage ranging from 1.0 V to 24 V.
The ADP1822 can operate at any frequency between 300 kHz
and 1.2 MHz, either by synchronizing with an external source
or an internally generated, logic-controlled clock of 300 kHz or
600 kHz. It includes an adjustable soft start to allow sequencing
and quick power-up while preventing input inrush current. Output
reverse-current protection at startup prevents excessive output
voltage excursions. The adjustable, virtually lossless current-
limit scheme reduces external part count and improves efficiency.
The ADP1822 operates over the ?40°C to +125°C junction
temperature range and is available in a 24-lead QSOP package.
97
96
High performance servers
Medical imaging systems
DSP core power supplies
Microprocessor core power supplies
Mobile communication base stations
Distributed power
GENERAL DESCRIPTION
The ADP1822 is a versatile and inexpensive synchronous voltage-
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94
93
92
91
90
89
88
3.3V OUTPUT
1.8V OUTPUT
mode PWM step-down controller. It drives an all N-channel power
stage to regulate an output voltage as low as 0.6 V.
87
0
2
4
6 8 10
LOAD CURRENT (A)
12
14
16
Figure 1. Efficiency vs. Load Current, 5 V Input
BIAS INPUT
CMOSH-3
POWER INPUT
5V
1μF
10?
VCC
PVCC
BST
180μF
20V
2.25V TO 24V
ADP1822
1μF
SHDN
FREQ
SYNC
PWGD
DH
SW
CSL
DL
PGND
0.1μF
6.18k?
2.2pF
IRF3711
1μH
IRF3711
20k?
1000μF
4V
OUTPUT
1.8V, 15A
MAR
MSEL
COMP
FB
TRKP
TRKN
MDN
1nF
158k?
10k?
15pF
80.6k?
309pF
100nF
SS AGND DGND MUP
316k?
TRACKING
SIGNAL INPUT
Figure 2. Typical Operating Circuit
Rev. D
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 ?2006–2011 Analog Devices, Inc. All rights reserved.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADP1823 | 制造商:AD 制造商全称:Analog Devices 功能描述:Dual, Interleaved, Step-Down DC-to-DC Controller with Tracking |
| ADP1823ACPZ | 制造商:Analog Devices 功能描述:IC CONTROLLER STEP DOWN DUAL SMD |
| ADP1823ACPZ-R7 | 功能描述:IC REG CTRLR BUCK PWM VM 32LFCSP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| ADP1823-EVAL | 功能描述:BOARD EVAL FOR ADP1823 RoHS:否 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:- 标准包装:1 系列:- 主要目的:DC/DC，步降 输出及类型:1，非隔离 功率 - 输出:- 输出电压:3.3V 电流 - 输出:3A 输入电压:4.5 V ~ 28 V 稳压器拓扑结构:降压 频率 - 开关:250kHz 板类型:完全填充 已供物品:板 已用 IC / 零件:L7981 其它名称:497-12113STEVAL-ISA094V1-ND |
| ADP1828 | 制造商:AD 制造商全称:Analog Devices 功能描述:Synchronous Buck PWM, Step-Down, DC-to-DC Controller |
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