參數(shù)資料
型號： MAX1763
廠商： Maxim Integrated Products, Inc.
元件分類： DC/DC變換器
英文描述： 1.5A, Low-Noise, 1MHz, Step-Up DC-DC Converter
中文描述： 1.5A、低噪聲、1MHz、升壓型DC-DC轉(zhuǎn)換器
文件頁數(shù)： 1/16頁
文件大?。?/td> 456K
代理商： MAX1763
General Description
The MAX1763 is a high-efficiency, low-noise, step-up
DC-DC converter intended for use in battery-powered
wireless applications. This device maintains exception-
ally low quiescent supply current (110μA) despite its
high 1MHz operating frequency. Small external compo-
nents and a tiny package make this device an excellent
choice for small hand-held applications that require the
longest possible battery life.
The MAX1763 uses a synchronous-rectified pulse-
width-modulation (PWM) boost topology to generate
2.5V to 5.5V outputs from a wide range of input
sources, such as one to three alkaline or NiCd/NiMH
cells or a single Lithium-ion (Li+) cell. Maxim's propri-
etary Idle Mode circuitry significantly improves effi-
ciency at light load currents while smoothly transitioning
to fixed-frequency PWM operation at higher load cur-
rents to maintain excellent full-load efficiency. Low-
noise, forced-PWM mode is available for applications
that require constant-frequency operation at all load
currents. The MAX1763 may also be synchronized to
an external clock to protect sensitive frequency bands
in communications equipment.
The MAX1763 includes an on-chip linear gain block
that can be used to build a high-power external linear
regulator or as a low-battery comparator. Soft-start and
current limit functions permit optimization of efficiency,
external component size, and output voltage ripple.
The MAX1763 is available in a space-saving 16-pin
QSOP package or a high-power (1.5W) 16-pin TSSOP-
EP package.
Features
o
Up to 94% Efficiency
o
+0.7V to +5.5V Input Voltage Range
o
1.1V Guaranteed Startup Input Voltage
o
Up to 1.5A Output
o
Fixed 3.3V Output or Adjustable (2.5V to 5.5V)
o
1MHz PWM Synchronous-Rectified Topology
o
1μA Logic-Controlled Shutdown
o
Analog Gain Block for Linear-Regulator or Low-
Battery Comparator
o
Adjustable Current Limit and Soft-Start
o
1.5W TSSOP Package Available
________________________Applications
M
1.5A, Low-Noise, 1MHz, Step-Up
DC-DC Converter
________________________________________________________________
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
Pin Configuration
19-1698; Rev 1; 2/01
Ordering Information
*EP = Exposed pad
Idle Mode is a trademark of Maxim Integrated Products.
PART
TEMP RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
PIN-PACKAGE
16 QSOP
16 TSSOP-EP*
MAX1763
EEE
MAX1763EUE
Digital Cordless
Phones
PCS Phones
Wireless Handsets
Hand-Held
Instruments
Palmtop Computers
Personal
Communicators
Typical Operating Circuit
ON
OFF
PWM
OFF
ON
ONB
ONA
LX
POUT
OUT
CLK/SEL
AO
GND
PGND
FB
ISET
REF
MAX1763
OR NORMAL
AIN
LBI OR GAIN
BLOCK INPUT
1.5
μ
H
IN
0.7V TO 5.5V
LBO OR
GAIN BLOCK OUTPUT
OUT
3.3V AT 1.5A
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
ONA
ONB
POUT
LX
POUT
PGND
LX
PGND
CLK/SEL
TOP VIEW
MAX1763
QSOP
TSSOP-EP
ISET
REF
OUT
GND
FB
AIN
AO
相關(guān)PDF資料
PDF描述
MAX1763EEE 1.5A, Low-Noise, 1MHz, Step-Up DC-DC Converter
MAX1763EUE Replaced by TMS320C6410 : Digital Signal Processors 68-PLCC -40 to 85
MAX1765 Replaced by TMS320C6410 : Digital Signal Processors 68-PLCC -40 to 85
MAX1765EEE 800mA, Low-Noise, Step-Up DC-DC Converter with 500mA Linear Regulator
MAX1765EUE 800mA, Low-Noise, Step-Up DC-DC Converter with 500mA Linear Regulator
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1763EEE 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 1.5A Low-Noise 1MHz Step-Up 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(fēng)格:SMD/SMT
MAX1763EEE+ 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 1.5A Low-Noise 1MHz Step-Up 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(fēng)格:SMD/SMT
MAX1763EEE+T 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 1.5A Low-Noise 1MHz Step-Up 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(fēng)格:SMD/SMT
MAX1763EEE-T 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 1.5A Low-Noise 1MHz Step-Up 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(fēng)格:SMD/SMT
MAX1763EUE 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 1.5A Low-Noise 1MHz Step-Up 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(fēng)格:SMD/SMT
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