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| 型号： | ADP2109ACBZ-1.8-R7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC 1.8V .6A 5WLCSP |
| 产品变化通告： | 8mm Carrier Tape Changes 28/Feb/2012 |
| 标准包装： | 1 |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 1.8V |
| 输入电压： | 2.3 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 3MHz |
| 电流 - 输出： | 600mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 5-WFBGA，WLCSP |
| 包装： | 标准包装 |
| 供应商设备封装： | 5-WLCSP |
| 产品目录页面： | 791 (CN2011-ZH PDF) |
| 配用： | ADP2109CB-1.8EVALZ-ND - BOARD EVAL FOR 1.8V ADP2109 |
| 其它名称： | ADP2109ACBZ-1.8-R7DKR |
Compact 600 mA, 3 MHz, Step-Down
Converter with Output Discharge
Data Sheet
FEATURES
Peak efficiency: 95%
Discharge switch function
Fixed frequency operation: 3 MHz
Typical quiescent current: 18 μA
Maximum load current: 600 mA
Input voltage: 2.3 V to 5.5 V
Uses tiny multilayer inductors and capacitors
Current mode architecture for fast load and line transient
response
100% duty-cycle low dropout mode
Internal synchronous rectifier
Internal compensation
Internal soft start
Current overload protection
Thermal shutdown protection
Shutdown supply current: 0.2 μA
5-ball WLCSP
Supported by ADIsimPower? design tool
APPLICATIONS
PDAs and palmtop computers
Wireless handsets
Digital audio, portable media players
Digital cameras, GPS navigation units
GENERAL DESCRIPTION
The ADP2109 is a high efficiency, low quiescent current step-
down dc-to-dc converter with an internal discharge switch that
allows automatic discharge of the output capacitor in an ultra-
small 5-ball WLCSP package.
The total solution requires only three tiny external components.
It uses a proprietary high speed current mode and constant
frequency pulse-width modulation (PWM) control scheme for
excellent stability, and transient response. To ensure the longest
battery life in portable applications, the ADP2109 has a power
save mode that reduces the switching frequency under light
load conditions.
The ADP2109 runs on input voltages of 2.3 V to 5.5 V, which
allow for single lithium or lithium polymer cell, multiple alkaline
or NiMH cells, PCMCIA, USB, and other standard power
sources. The maximum load current of 600 mA is achievable
across the input voltage range.
The ADP2109 is available in fixed output voltages of 1.8 V, 1.5 V,
1.2 V, and 1.0 V. All versions include an internal power switch
and synchronous rectifier for minimal external part count and
high efficiency. The ADP2109 has an internal soft start and internal
compensation. During logic-controlled shutdown, the input is
disconnected from the output and the ADP2109 draws less than
1 μA from the input source.
Other key features include undervoltage lockout to prevent deep
battery discharge and soft start to prevent input current overshoot
at startup. The ADP2109 is available in a 5-ball WLCSP.
A similar converter, the ADP2108, provides the same features
and operations as the ADP2109 without the discharge switch
and is available in both WLCSP and TSOT packages with
additional output voltages.
TYPICAL APPLICATIONS CIRCUIT
2.3V TO 5.5V
1μH
1.0V TO 1.8V
4.7μF
VIN
SW
10μF
ADP2109
ON
OFF
EN
FB
GND
Figure 1.
Rev. B
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 ?2009–2012 Analog Devices, Inc. All rights reserved.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADP2109CB-1.8EVALZ | 功能描述:BOARD EVAL FOR 1.8V ADP2109 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 |
| ADP2109CB-1.8EVALZ | 制造商:Analog Devices 功能描述:ADP2109, DC TO DC CONV, STEP DOWN, EVAL |
| ADP2114 | 制造商:AD 制造商全称:Analog Devices 功能描述:Configurable, Dual 2 A/Single 4 A, Synchronous Step-Down DC-to-DC Regulator |
| ADP2114-2PH-EVALZ | 功能描述:BOARD EVALUATION 1.2V 4A 1.2MHZ 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 |
| ADP2114ACPZ-R2 | 功能描述:直流/直流开关调节器 Dual-Step Down Converter w/ 2A x 2output RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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