參數(shù)資料
型號： MAX8560
廠商： Maxim Integrated Products, Inc.
元件分類： DC/DC變換器
英文描述： 4MHz. 500mA Synchronous Step-Down DC-DC Converters in Thin SOT and TDFN
中文描述： 4MHz、500mA同步降壓型DC-DC轉(zhuǎn)換器，薄型SOT和TDFN封裝
文件頁數(shù)： 1/14頁
文件大?。?/td> 296K
代理商： MAX8560
General Desc ription
The MAX8500–MAX8504 PWM DC-to-DC buck converters
are optimized with integrated bypass FET (0.25
typ)
to provide power to the PA in N-CDMA and W-CDMA
cell phones. The devices have a low on-resistance FET
to bypass the external inductor for low dropout of only
150mV at 600mA load, regardless of inductor series
resistance. The supply voltage range is from 2.6V to
5.5V and the guaranteed converter output current is
600mA. The 1MHz PWM switching frequency allows for
small external components.
The MAX8500–MAX8503 are dynamically controlled to
provide varying output voltages from 0.4V to V
BATT
.
The LDO regulation point is slightly lower than the PWM
converter such that the transition into and out of dropout
is smooth, regardless of the inductor resistance. The
MAX8504 is programmed for fixed 1.25V to 2.5V output
with external resistors. It features a high-power bypass
mode that connects the output directly to the battery. All
devices are designed to achieve an output settling time
of less than 30μs for a full-scale change in output volt-
age and load current.
The MAX8500–MAX8504 are available in a 12-lead
4mm x 4mm thin QFN package (0.8mm max height).
Applic ations
N-CDMA/W-CDMA Cellular Phones
Wireless PDAs and Modems
Features
o
Integrated Bypass PFET
o
150mV Dropout at 600mA Load (Regardless of
External Inductor)
o
Dynamically Adjustable Output from 0.4V to
V
BATT
o
Externally Fixed Output from 1.25V to 2.5V with
Digitally Controlled High-Power Bypass Mode
(MAX8504)
o
1MHz Fixed-Frequency PWM Switching
o
600mA Guaranteed Output Current
o
10% to 100% Duty-Cycle Operation
o
Low Quiescent Current
280μA (typ) in Normal Mode
3.3mA (typ) in PWM Mode
0.1μA (typ) in Shutdown Mode
o
12-Pin Thin QFN (4mm x 4mm, 0.8mm max Height)
M
PWM Buc k Converters with Bypass FET
for N-CDMA/W-CDMA Handsets
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
12
11
10
4
5
BATT
(HP)
( ) MAX8504 ONLY
6
PGND
1
2
REF
3
9
8
7
REFIN
(FB)
BATT
BATTP
LX
MAX8500–
MAX8504
GND
COMP
SHDN
SKIP
OUT
Thin QFN 4mm x 4mm
Pin Configuration
Ordering Information
19-2641; Rev 0; 10/02
EVALUATION KIT
AVAILABLE
PART
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
MAX8500
ETC
MAX8501
ETC*
MAX8502
ETC*
MAX8503
ETC
MAX8504
ETC
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
-40
°
C to +85
°
C
12 Thin QFN
12 Thin QFN
12 Thin QFN
12 Thin QFN
12 Thin QFN
AABQ
—
—
AABU
AABS
GND
BATT
INPUT 2.6V TO5.5V
OUTPUT 0.4V TOV
BATT
SKIP
SHDN
REF
C
R
C
1000pF
LX
OUT
REFIN
PGND
COMP
10
μ
F
4.7
μ
F
4.7
μ
H
DAC
PWM
LDO
1MHz
OSC
MAX8500-
MAX8503
g
m
Typic al Operating Circ uit
*
Future product—contact factory for availability.
相關(guān)PDF資料
PDF描述
MAX8561 4MHz. 500mA Synchronous Step-Down DC-DC Converters in Thin SOT and TDFN
MAX8562 4MHz. 500mA Synchronous Step-Down DC-DC Converters in Thin SOT and TDFN
MAX8525 2- to 8-Phase VRM 10/9.1 PWM Controllers with Precise Current Sharing and Fast Voltage Positioning
MAX8537 Dual-Synchronous Buck Controllers for Point-of-Load. Tracking. and DDR Memory Power Supplies
MAX8538 Dual-Synchronous Buck Controllers for Point-of-Load. Tracking. and DDR Memory Power Supplies
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX8560EZK 制造商:Maxim Integrated Products 功能描述:4MHZ 500MA SYNCHRONOUS STEP-DOWN D - Cut Tape Product
MAX8560EZK+ 制造商:Maxim Integrated Products 功能描述:CONV DC-DC SGL-OUT STEP DOWN 5PIN TSOT-23 - Rail/Tube
MAX8560EZK+T 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 4MHz 500mA Step-Down DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT
MAX8560EZK-T 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 4MHz 500mA Step-Down DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風格:SMD/SMT
MAX8561ETA 制造商:Maxim Integrated Products 功能描述:- Rail/Tube 制造商:Rochester Electronics LLC 功能描述:
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*