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ADP2121ACBZ-1.85R7 PDF预览

ADP2121ACBZ-1.85R7

更新时间： 2024-01-08 12:07:40
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亚德诺 - ADI 开关
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21页 2380K
描述
600 mA, 6 MHz Synchronous Step-Down DC-to-DC Converter

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ADP2121ACBZ-1.85R7 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Obsolete零件包装代码：BGA
包装说明：VFBGA, BGA6,2X3,16针数：6
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.65
其他特性：ALSO HAS CONTROL TECHNIQUE OF PFM模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：VOLTAGE-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：5.5 V最小输入电压：2.3 V
标称输入电压：3.6 VJESD-30 代码：R-PBGA-B6
JESD-609代码：e3长度：1.3 mm
湿度敏感等级：1功能数量：1
端子数量：6最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：1.222 A
标称输出电压：1.85 V封装主体材料：PLASTIC/EPOXY
封装代码：VFBGA封装等效代码：BGA6,2X3,16
封装形状：RECTANGULAR封装形式：GRID ARRAY, VERY THIN PROFILE, FINE PITCH
峰值回流温度（摄氏度）：225认证状态：Not Qualified
座面最大高度：0.66 mm子类别：Switching Regulator or Controllers
表面贴装：YES切换器配置：BUCK
最大切换频率：6640 kHz温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：BALL
端子节距：0.4 mm端子位置：BOTTOM
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：0.9 mm
Base Number Matches：1

ADP2121ACBZ-1.85R7 数据手册

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600 mA, 6 MHz, Synchronous  
Step-Down DC-to-DC Converter  
ADP2121  
Data Sheet  
FEATURES  
TYPICAL APPLICATION CIRCUIT  
OUTPUT VOLTAGE  
1.8V, 1.82V, 1.85V, 1.875V, 2.3V  
Peak efficiency: 92%  
INPUT VOLTAGE*  
2.3V TO 5.5V  
ADP2121  
L
A2 VIN  
B1  
Operating frequency: 6 MHz  
SW  
0.47µH  
C
IN  
2.2µF  
Typical quiescent current in auto mode: 36 μA  
Fixed output voltage: 1.8 V, 1.82 V, 1.85 V, 1.875 V, 2.3 V  
Maximum guaranteed load current: 600 mA at VIN = 2.7 V to 5.5 V  
Input voltage: 2.3 V to 5.5 V  
Typical shutdown supply current: 0.3 μA  
Automatic power-saving mode  
C1  
C2  
GND  
FB  
C
OUT  
4.7µF  
EN  
B2  
MODE  
A1  
ON  
PWM  
OFF  
AUTO  
*FOR OUTPUT VOLTAGE = 2.3 V, INPUT VOLTAGE = 2.9 V TO 5.5V.  
Compatible with tiny multilayer inductors  
Internal synchronous rectifier  
Internal compensation  
Figure 1.  
95  
AUTO MODE  
V
= 2.7 V  
IN  
(V = 2.9V FOR V  
= 2.3V)  
IN OUT  
Internal soft start  
85  
75  
65  
55  
Output to ground short-circuit protection  
Cycle-by-cycle current-limit protection  
Enable/shutdown logic input  
Undervoltage lockout  
Thermal shutdown protection  
Ultrasmall 6-ball, 0.4 mm pitch, 1.17 mm2 WLCSP  
V
V
V
V
V
= 1.8V  
OUT  
OUT  
OUT  
OUT  
OUT  
= 1.82V  
= 1.85V  
= 1.875V  
= 2.3V  
APPLICATIONS  
Mobile phones  
Digital cameras  
Digital audio  
0.1  
1
10  
LOAD CURRENT (mA)  
100  
1000  
Figure 2. Efficiency vs. Load Current for Each Voltage Option  
Portable equipment  
GENERAL DESCRIPTION  
The ADP2121 has an input voltage range of 2.3 V to 5.5 V (2.9 V  
to 5.5 V for VOUT = 2.3 V), allowing the use of a single Li+/Li−  
polymer cell, 3-cell alkaline or Ni-MH cell, and other standard  
power sources. The converter can source up to 600 mA and is  
internally compensated to minimize external components. Other  
key features, such as cycle-by-cycle peak current limit, soft start,  
undervoltage lockout (UVLO), output-to-ground short-circuit  
protection, and thermal shutdown, protect the internal and  
external circuit components.  
The ADP2121 is a high frequency, low quiescent current  
step-down dc-to-dc converter optimized for portable applications  
in which board area and battery life are critical constraints. The  
6 MHz operating frequency enables the use of tiny ceramic induc-  
tors and capacitors. Additionally, the synchronous rectification  
improves efficiency and results in fewer external components.  
At high load currents, the device uses a voltage regulating pulse-  
width modulation (PWM) mode that maintains a constant  
frequency with excellent stability and transient response. In forced  
PWM mode, the converter continues operating in PWM for light  
loads. At light load conditions in auto mode, the ADP2121 can  
automatically enter a power-saving mode that uses pulse-frequency  
modulation (PFM) to reduce the effective switching frequency and  
ensure the longest battery life in portable applications. During logic  
controlled shutdown (EN ≤ 0.4 V), the input is disconnected  
from the output and draws less than 0.3 μA current (typical)  
from the source.  
Table 1. Output Voltage Options  
Input Voltage  
Range (V)  
Typical Start-Up  
Time (ꢀs)  
Fixed Output  
Voltage (V)  
2.3 to 5.5  
2.3 to 5.5  
2.9 to 5.5  
75  
275  
100  
1.8, 1.85, 1.875  
1.82  
2.3  
Rev. C  
Document Feedback  
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 ©2009–2017 Analog Devices, Inc. All rights reserved.  
Technical Support  
www.analog.com  
 
 
 
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