ADP1883ARMZ-0.3-R7

更新时间： 2024-11-19 06:36:23

品牌	Logo	应用领域
亚德诺 - ADI		控制器
页数	文件大小	规格书
40页	1910K
描述
Synchronous Current-Mode with Constant On-Time,PWM Buck Controller

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ADP1883ARMZ-0.3-R7 数据手册

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Synchronous Current-Mode with

Constant On-Time, PWM Buck Controller

ADP1882/ADP1883

FEATURES

TYPICAL APPLICATIONS CIRCUIT

= 2.75V TO 20V

Power input voltage as low as 2.75 V to 20 V

Bias supply voltage range: 2.75 V to 5.5 V

Minimum output voltage: 0.8 V

0.8 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 (ADP1883 only)

Resistor-programmable current-sense gain

Thermal overload protection

VIN

ADP1882/

ADP1883

COMP/EN BST

TOP

OUT

BST

DRVH

OUT

BOT

GND

OUT

VDD2

VDD

DRVL

PGND

RES

LOAD

= 2.75V TO 5.5V

VDD

Short-circuit protection

Figure 1.

Precision enable input

Integrated bootstrap diode for high-side drive

140 μA shutdown supply current

100

Starts into a precharged load

Small, 10-lead MSOP package

= 5.5V, V = 13.0V

APPLICATIONS

= 5.5V, V = 16.5V

Telecom and networking systems

Mid to high end servers

Set-top boxes

= 5.5V, V = 5.5V (PSM)

= 5.5V, V = 5.5V

= 3.6V, V = 5.5V

DSP core power supplies

= 25°C

= 1.8V

OUT

= 300kHz

WURTH INDUCTOR:

744325120, L = 1.2µH, DCR = 1.8mΩ

INFINEON MOSFETs:

BSC042N03MS G (UPPER/LOWER)

100

10k

100k

LOAD CURRENT (mA)

Figure 2. ADP1882/ADP1883 Efficiency vs. Load Current

(V_OUT= 1.8 V, 300 kHz)

GENERAL DESCRIPTION

The ADP1882/ADP1883 are versatile current-mode, synchronous

step-down controllers that 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. In addition, these devices offer

optimum performance at low duty cycles by using valley current-

mode control architecture. This allows the ADP1882/ADP1883

to drive all N-channel power stages to regulate output voltages

as low as 0.8 V.

Available in three frequency options (300 kHz, 600 kHz, and

1.0 MHz, plus the PSM option), the ADP1882/ADP1883 are

well suited for a wide range of applications. These ICs not only

operate from a 2.75 V to 5.5 V bias supply, but they also can

accept a power input as high as 20 V.

In addition, an internally fixed soft start period is included to limit

input in-rush current from the input supply during startup and

to provide reverse current protection during soft start for a pre-

charged output. The low-side current-sense, current-gain scheme

and integration of a boost diode, along with the PSM/forced

pulse-width modulation (PWM) option, reduce the external

part count and improve efficiency.

The ADP1883 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 Power Saving Mode (PSM) Version (ADP1883)

section for more information).

The ADP1882/ADP1883 operate over the −40°C to +125°C

junction temperature range and are available in a 10-lead MSOP.

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 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

Fax: 781.461.3113

www.analog.com

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ADP1883ARMZ-0.3-R7 替代型号

型号	品牌	替代类型	描述	数据表
ADP1873ARMZ-0.3-R7	ADI	完全替代	Synchronous Current-Mode Buck Controller with Constant On-time, 0.6 V Reference Voltage, a
ADP1882ARMZ-0.6-R7	ADI	完全替代	Synchronous Current-Mode with Constant On-Time,PWM Buck Controller
ADP1872ARMZ-0.6-R7	ADI	类似代替	Synchronous Current-Mode Buck Controller with Constant On-time and 0.6 V Reference Voltage

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ADP1883ARMZ-0.6-EVALZ	ADI	获取价格	Synchronous Current-Mode with Constant On-Time,PWM Buck Controller
ADP1883ARMZ-0.6-R7	ADI	获取价格	Synchronous Current-Mode with Constant On-Time,PWM Buck Controller
ADP1883ARMZ-1.0-EVALZ	ADI	获取价格	Synchronous Current-Mode with Constant On-Time,PWM Buck Controller
ADP1883ARMZ-1.0-R7	ADI	获取价格	Synchronous Current-Mode with Constant On-Time,PWM Buck Controller
ADP190	ADI	获取价格	Logic Controlled, High-Side Power Switches
ADP190ACBZ-R7	ADI	获取价格	Logic Controlled, High-Side Power Switches
ADP190ACBZ-R71	ADI	获取价格	IC BUF OR INV BASED PRPHL DRVR, PBGA4, 0.80 X 0.80 MM, 0.40 MM PITCH, ROHS COMPLIANT, WLCS
ADP190CB-EVALZ	ADI	获取价格	Logic Controlled, High-Side Power Switches
ADP191	ADI	获取价格	逻辑控制的高端电源开关
ADP191ACBZ-R7	ADI	获取价格	Logic Controlled, High-Side Power Switches

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