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| 型号： | ADP1864-EVALZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION ADP1864 |
| 产品培训模块： | Power Line Monitoring |
| 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： | 3.3V |
| 电流 - 输出： | 3A |
| 输入电压： | 9 ~ 12V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 580kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | ADP1864 |
| 产品目录页面： | 791 (CN2011-ZH PDF) |
| 相关产品： | ADP1864AUJZ-R7DKR-ND - IC REG CTRLR BUCK PWM TSOT23-6 ADP1864AUJZ-R7CT-ND - IC REG CTRLR BUCK PWM TSOT23-6 ADP1864AUJZ-R7TR-ND - IC REG CTRLR BUCK PWM TSOT23-6 |
Constant Frequency Current-Mode
Step-Down DC-to-DC Controller in TSOT
Data Sheet
FEATURES
Wide input voltage range: 3.15 V to 14 V
Wide output voltage range: 0.8 V to input voltage
Pin-to-pin compatible with LTC1772, LTC3801
Up to 94% efficiency
0.8 V ± 1.25% reference accuracy over temperature
Internal soft start
100% duty cycle for low dropout voltage
Current-mode operation for good line and load
transient response
7 μA shutdown supply current
235 μA quiescent supply current
Short-circuit and overvoltage protection
Small 6-lead TSOT package
Supported by ADIsimPower ? design tool
APPLICATIONS
Wireless devices
1- to 3-cell Li-Ion battery-powered applications
Set-top boxes
Processor core power supplies
GENERAL DESCRIPTION
The ADP1864 is a compact, inexpensive, constant-frequency,
current-mode, step-down dc-to-dc controller. The ADP1864
drives a P-channel MOSFET that regulates an output voltage as
low as 0.8 V with ±1.25% accuracy, for up to 5 A load currents,
from input voltages as high as 14 V.
The ADP1864 provides system flexibility by allowing accurate
setting of the current limit with an external resistor, and the
output voltage is easily adjustable using two external resistors.
The ADP1864 includes an internal soft start to allow quick
power-up while preventing input inrush current. Additional
safety features include short-circuit protection, output overvoltage
protection, and input undervoltage protection. Current-mode
control provides fast and stable load transient performance,
while the 580 kHz operating frequency allows a small inductor
to be used in the system. To further the life of a battery source,
the controller turns on the external P-channel MOSFET 100%
of the duty cycle during dropout.
The ADP1864 operates over the ?40°C to +125°C temperature
range and is available in a small, low profile, 6-lead TSOT package.
Hard disk drives
TYPICAL APPLICATIONS DIAGRAM
25k?
1
COMP
PGATE 6
V IN = 3.15V TO 14V
470pF
68pF
2
ADP1864
GND
IN 5
0.03?
10μF
80.6k?
3
FB
CS 4
5μH
2.5V, 2.0A
174k?
Rev. C
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.
Figure 1.
47μF
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 ?2005–2012 Analog Devices, Inc. All rights reserved.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADP1870 | 制造商:AD 制造商全称:Analog Devices 功能描述:Synchronous Buck Controller with Constant On-Time and Valley Current Mode |
| ADP1870-0.3-EVALZ | 功能描述:BOARD EVAL FOR ADP1870-0.3 RoHS:是 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 |
| ADP1870-0.6-EVALZ | 功能描述:BOARD EVAL FOR ADP1870-0.6 RoHS:是 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 |
| ADP1870-1.0-EVALZ | 功能描述:BOARD EVAL FOR ADP1870-1.0 RoHS:是 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 |
| ADP1870ACPZ-0.3-R7 | 功能描述:IC REG CTRLR BUCK PWM CM 10LFCSP 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) |
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