Datasheet > ADP1864AUJZ-R7

ADP1864AUJZ-R7

更新时间： 2024-02-23 22:35:28

品牌	Logo	应用领域
亚德诺 - ADI		控制器
页数	文件大小	规格书
16页	252K
描述
Constant Frequency Current-Mode Step-Down DC/DC Controller in TSOT

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ADP1864AUJZ-R7 技术参数

是否无铅：	含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	TSSOP
包装说明：	VSSOP, TSOP6,.11,37	针数：	6
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	1.71
模拟集成电路 - 其他类型：	SWITCHING CONTROLLER	控制模式：	CURRENT-MODE
控制技术：	PULSE WIDTH MODULATION	最大输入电压：	14 V
最小输入电压：	3.15 V	标称输入电压：	5 V
JESD-30 代码：	R-PDSO-G6	JESD-609代码：	e3
长度：	2.9 mm	湿度敏感等级：	1
功能数量：	1	端子数量：	6
最高工作温度：	125 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	VSSOP
封装等效代码：	TSOP6,.11,37	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH	峰值回流温度（摄氏度）：	260
认证状态：	Not Qualified	座面最大高度：	1 mm
子类别：	Switching Regulator or Controllers	表面贴装：	YES
切换器配置：	SINGLE	最大切换频率：	650 kHz
温度等级：	AUTOMOTIVE	端子面层：	Matte Tin (Sn)
端子形式：	GULL WING	端子节距：	0.95 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	40
宽度：	1.6 mm	Base Number Matches：	1

ADP1864AUJZ-R7 数据手册

Constant Frequency Current-Mode

Step-Down DC/DC Controller in TSOT

ADP1864

FEATURES

GENERAL DESCRIPTION

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

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 ±±2 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, while 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 over-

voltage protection, and input under voltage 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 1002 of the duty cycle in dropout.

100% duty cycle for low dropout voltage

Current-mode operation for good line and load transient

response

7 μA shutdown current

235 μA quiescent supply current

Short-circuit and overvoltage protection

Small 6-lead TSOT package

APPLICATIONS

Wireless devices

1- to 3-cell Li-Ion battery-powered applications

Set-top boxes

Processor core power supplies

Hard disk drives

The ADP1864 operates over the −40°C to +85°C temperature

range and is available in a small, low profile, 6-lead TSOT

package.

MOSFET = FDC638P

VOUT = 2.5V

100

ADP1864

VIN = 3.3V to 10V

10μF

15kΩ

COMP

470pF

0.03Ω

3.3V

GND

5μH

80.6kΩ

2.5V, 2.0A

PGATE

4.2V

47μF

174kΩ

5.0V

0.01

0.1

1.0

10.0

EFFICIENCY vs. LOAD CURRENT FOR APPLICATION

Figure 1. Typical Applications Diagram

Figure 2. Efficiency vs. Load Current

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

Fax: 781.461.3113

www.analog.com

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