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ADP1878ACPZ-0.6-R7 PDF预览

ADP1878ACPZ-0.6-R7

更新时间： 2024-01-02 15:15:37
品牌 Logo 应用领域
亚德诺 - ADI 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管输出元件
页数 文件大小 规格书
40页 2501K
描述
Synchronous Buck Controller

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ADP1878ACPZ-0.6-R7 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：End Of Life零件包装代码：SON
包装说明：HVSON, SOLCC14,.12,20针数：14
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.73
其他特性：ALSO AVAILABLE ADJUSTABLE OUTPUT DOWN TO 0.6V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：20 V最小输入电压：2.95 V
标称输入电压：12 VJESD-30 代码：R-PDSO-N14
JESD-609代码：e3长度：4 mm
湿度敏感等级：1功能数量：1
端子数量：14最高工作温度：125 °C
最低工作温度：-40 °C标称输出电压：5 V
封装主体材料：PLASTIC/EPOXY封装代码：HVSON
封装等效代码：SOLCC14,.12,20封装形状：RECTANGULAR
封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：0.8 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：PUSH-PULL最大切换频率：600 kHz
技术：MOS温度等级：AUTOMOTIVE
端子面层：Matte Tin (Sn)端子形式：NO LEAD
端子节距：0.5 mm端子位置：DUAL
处于峰值回流温度下的最长时间：30宽度：3 mm
Base Number Matches：1

ADP1878ACPZ-0.6-R7 数据手册

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Synchronous Buck Controller with  
Constant On Time and Valley Current Mode  
Data Sheet  
ADP1878/ADP1879  
FEATURES  
TYPICAL APPLICATIONS CIRCUIT  
V
= 2.95V TO 20V  
IN  
Power input voltage range: 2.95 V to 20 V  
On-board bias regulator  
Minimum output voltage: 0.6 V  
VIN  
C
C
ADP1878/  
ADP1879  
0.6 V reference voltage with 1.0% accuracy  
Supports all N-channel MOSFET power stages  
Available in 300 kHz, 600 kHz, and 1.0 MHz options  
No current sense resistor required  
Power saving mode (PSM) for light loads (ADP1879 only)  
Resistor programmable current limit  
Power good with internal pull-up resistor  
Externally programmable soft start  
Thermal overload protection  
C
C
IN  
C2  
R
C
COMP  
BST  
DRVH  
SW  
C
10kΩ  
Q1  
BST  
V
L
REG  
EN  
FB  
R
V
TOP  
OUT  
V
OUT  
C
Q2  
OUT  
R
BOT  
LOAD  
GND  
DRVL  
C
VREG2  
VREG  
C
VREG  
R
PGD  
PGOOD  
SS  
V
EXT  
RES  
R
RES  
C
SS  
PGND  
Short-circuit protection  
Standalone precision enable input  
Integrated bootstrap diode for high-side drive  
Starts into a precharged output  
Figure 1.  
Available in a 14-lead LFCSP_WD package  
APPLICATIONS  
Telecommunications and networking systems  
Mid-to-high end servers  
Set-top boxes  
DSP core power supplies  
conditions. The low-side current sense, current gain scheme and  
integration of a boost diode, together with the PSM/forced  
pulse-width modulation (PWM) option, reduce the external  
device count and improve efficiency.  
GENERAL DESCRIPTION  
The ADP1878/ADP1879 are versatile current-mode, synchronous  
step-down controllers. They provide superior transient response,  
optimal stability, and current-limit protection by using a constant  
on time, pseudo fixed frequency with a programmable current-limit,  
current control scheme. These devices offer optimum performance  
at low duty cycles by using a valley, current-mode control architec-  
ture allowing the ADP1878/ADP1879 to drive all N-channel power  
stages to regulate output voltages to as low as 0.6 V.  
The ADP1878/ADP1879 operate over the −40°C to +125°C  
junction temperature range and are available in a 14-lead  
LFCSP_WD package.  
100  
V
= 5V (PSM)  
IN  
95  
90  
85  
80  
75  
70  
65  
60  
55  
50  
45  
40  
35  
30  
25  
The ADP1879 is the power saving mode (PSM) version of the  
device and is capable of pulse skipping to maintain output  
regulation while achieving improved system efficiency at light  
loads (see the ADP1879 Power Saving Mode (PSM) section for  
more information).  
V
= 16.5V  
IN  
V
= 13V  
IN  
V
= 13V (PSM)  
IN  
Available in three frequency options (300 kHz, 600 kHz, and  
1.0 MHz) plus the PSM option, the ADP1878/ADP1879 are well  
suited for a wide range of applications that require a single input  
power supply range from 2.95 V to 20 V. Low voltage biasing is  
supplied via a 5 V internal low dropout regulator (LDO). In  
addition, soft start programmability is included to limit input  
inrush current from the input supply during startup and to  
provide reverse current protection during precharged output  
T
= 25°C  
A
V
= 1.8V  
OUT  
f
SW  
= 300kHz  
V
= 16.5V (PSM)  
IN  
WÜRTH INDUCTOR:  
744325120, L = 1.2µH, DCR = 1.8mꢀ  
INFINEON FETs:  
BSC042N03MS G (UPPER/LOWER)  
10  
100  
1k  
10k  
100k  
LOAD CURRENT (mA)  
Figure 2. ADP1878/ADP1879 Efficiency vs. Load Current (VOUT = 1.8 V, 300 kHz)  
Rev. A  
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 registeredtrademarks arethe 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 ©2011–2012 Analog Devices, Inc. All rights reserved.  
 
 
 
 
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