參數(shù)資料
型號： MAX8546EVKIT
廠商： Maxim Integrated Products, Inc.
英文描述： Evaluation Kit for the MAX8545/MAX8546/MAX8548
中文描述： MAX8545、MAX8546、MAX8548評估板
文件頁數(shù)： 1/14頁
文件大?。?/td> 296K
代理商： MAX8546EVKIT
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
MAX859 Upstream CATV Amplifier[MAX3509/MAX3509EUP/MAX3509EUP-T/MAX3509EVKIT]
MAX8502 SWITCH
MAX8503 PWM Buck Converters with Bypass FET for N-CDMA/W-CDMA Handsets
MAX8504 PWM Buck Converters with Bypass FET for N-CDMA/W-CDMA Handsets
MAX8504EVKIT Evaluation Kit for the MAX8500/MAX8503/MAX8504
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX8548EUB 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
MAX8548EUB+ 功能描述:電壓模式 PWM 控制器 Wide Input Range Step-Down Controller RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
MAX8548EUB+T 功能描述:電壓模式 PWM 控制器 Wide Input Range Step-Down Controller RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel
MAX8548EUB-T 功能描述:DC/DC 開關(guān)控制器 RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK
MAX8550AETI 功能描述:PMIC 解決方案 RoHS:否 制造商:Texas Instruments 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-24 封裝:Reel
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