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| 型号： | ADP1828ACPZ-R7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/36页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 20LFCSP |
| 标准包装： | 1,500 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 720kHz |
| 占空比： | 93% |
| 电源电压： | 3 V ~ 20 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 20-WFQFN 裸露焊盘，CSP |
| 包装： | 带卷 (TR) |
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Synchronous Buck PWM,
Step-Down, DC-to-DC Controller
ADP1828
FEATURES
Wide bias voltage range 3.0 V to 20 V
Wide power stage input range 1 V to 24 V
Wide output voltage range: 0.6 V to 85% of input voltage
±0.85% accuracy at 0 o C to 70 o C
All N-channel MOSFET design for low cost
Fixed-frequency operation at 300 kHz, 600 kHz, or resistor
adjustable 300 kHz to 600 kHz
Clock output for synchronizing other controllers
No current sense resistor required
Internal linear regulator
Voltage tracking for sequencing
Soft start and thermal overload protection
Overvoltage and undervoltage power-good indicator
15 μA shutdown supply current
Available in a 20-lead QSOP and 20-lead, 4mm × 4 mm LFCSP
APPLICATIONS
Telecom and networking systems
Base station power
Set-top boxes, game consoles
Printers and copiers
Medical imaging systems
DSP and microprocessor core power supplies
DDR termination
GENERAL DESCRIPTION
The ADP1828 is a versatile and synchronous PWM voltage
mode buck controller. It drives an all N-channel power stage
to regulate an output voltage as low as 0.6 V to 85% of the input
voltage and is sized to handle large MOSFETs for point-of-load
regulators. The ADP1828 is ideal for a wide range of high power
applications, such as DSP and processor core I/O power, and
general-purpose power in telecommunications, medical imaging,
PC, gaming, and industrial applications. It operates from input
bias voltages of 3 V to 20 V with an internal LDO that generates
a 5 V output for input bias voltages greater than 5.5 V.
The ADP1828 operates at a pin-selectable, fixed switching
frequency of either 300 kHz or 600 kHz, or at any frequency
between 300 kHz and 600 kHz with a resistor. The switching
frequency can also be synchronized to an external clock up to
2× the part’s nominal oscillator frequency. The clock output
can be used for synchronizing additional ADP1828s (or the
ADP1829 controllers), thus eliminating the need for an external
clock source. The ADP1828 includes soft start protection to
limit any inrush current from the input supply during startup,
reverse current protection during soft start for a precharged
output, as well as a unique adjustable lossless current-limit
scheme utilizing external MOSFET R DSON sensing.
For applications requiring power-supply sequencing, the
ADP1828 provides a tracking input that allows the output
voltage to track during startup, shutdown, and faults. The
additional supervisory and control features include thermal
overload, undervoltage lockout, and power good.
The ADP1828 operates over the ?40°C to +125°C junction
temperature range and is available in a 20-lead QSOP and
20-lead, 4mm × 4mm LFCSP.
V IN = 10V TO 18V
C5
1μF
C7
1μF
D1
C IN
180μF
×2
20V
ADP1828
EN
CLKOUT
R1
20k ?
R6
100k ?
C2
33pF
C6
1μF
R8
20k ?
C3
5.6nF
C SS
200nF
IN DH
FREQ
SYNC
PGOOD
COMP
GND
VREG PV TRK BST
SW
CSL
DL
PGND
FB
SS CLKSET
C4
0.47μF
R C L
1.8k ?
M1
L1 = 0.82μH
C OUT2
M2 1000μF
×2 ×2
AGND PGND
C OUT1
47μF
X5R
6.3V
OUTPUT
1.8V, 20A
R3
7.5k ?
C1
680pF
R2
10k ?
AGND
f SW = 300kHz
C IN : SANYO, OSCON 20SP180M
C OUT2 : SANYO, POSCAP 2R5TPD1000M5
L1: WURTH ELEKTRONIC, 0.82μH, 744355182
D1: BAT54
M1: INFINEON, BSC080N03LS
M2: INFINEON, 2 × BSC030N03LS
Figure 1. Typical Application Circuit with 20 A Output
Rev. C
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 ?2007–2010 Analog Devices, Inc. All rights reserved.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADP1828-BL1-EVZ | 制造商:Analog Devices 功能描述:BLANK ADISIMPOWER EVAL ADP1828 - Boxed Product (Development Kits) |
| ADP1828-BL2-EVZ | 制造商:Analog Devices 功能描述:BLANK ADISIMPOWER EVAL ADP1828 - Boxed Product (Development Kits) |
| ADP1828HC-EVALZ | 功能描述:BOARD EVALUATION ADP1828HC RoHS:是 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:True Shutdown™ 主要目的:DC/DC，步升 输出及类型:1，非隔离 功率 - 输出:- 输出电压:- 电流 - 输出:1A 输入电压:2.5 V ~ 5.5 V 稳压器拓扑结构:升压 频率 - 开关:3MHz 板类型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| ADP1828LC-EVALZ | 功能描述:BOARD EVALUATION ADP1828LC RoHS:是 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:True Shutdown™ 主要目的:DC/DC，步升 输出及类型:1，非隔离 功率 - 输出:- 输出电压:- 电流 - 输出:1A 输入电压:2.5 V ~ 5.5 V 稳压器拓扑结构:升压 频率 - 开关:3MHz 板类型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| ADP1828YRQZ-R7 | 功能描述:IC REG CTRLR BUCK PWM VM 20-QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
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