參數(shù)資料
型號： MAX1844
廠商： Maxim Integrated Products, Inc.
英文描述： High-Speed Step-Down Controller with Accurate Current Limit for Notebook Computers
中文描述： 高速、降壓型控制器，帶有精確限流，用于筆記本電腦
文件頁數(shù)： 1/8頁
文件大小： 313K
代理商： MAX1844
General Description
The MAX1800 evaluation kit (EV kit) accepts 1.8V to
5.5V battery voltages and provides all of the output volt-
ages required in digital still cameras (DSC). The EV kit
consists of the MAX1800 multi-output master converter
and the MAX1801 slave step-up converter.
The EV kit provides 10 separate output voltages. The
MAX1800 provides one main-system step-up converter
(3.3V/400mA), one linear regulator for the DSP core
(1.8V/200mA), one step-up converter for the backlight
(7V/100mA), three flyback outputs for the CCD
(14.3V/10mA, 5V/50mA, -8.15V/10mA), and three fly-
back outputs for the LCD (13.85V/10mA, 5V/50mA,
-16.23V/10mA). In addition, the MAX1801 provides one
step-up converter for the motor (5V/500mA).
The EV kit’s outputs are adjustable and are suitable for
applications running from 2- or 3-cell alkaline, NiCd, or
NiMH batteries or from a single lithium-on (Li+) battery.
Features
o
10 Outputs
One Synchronous Rectified Step-Up Converter
Two Step-Up Converters
One Low-Dropout Linear Regulator Output
Six Flyback Outputs
o
1.8V to 5.5V Input Voltage Range
o
All Converters Synchronized to Single Oscillator
o
100kHz to 1MHz Switching Frequency
o
Main Power-OK Output
o
Independent Shutdown of Each Converter
o
Short-Circuit-Protected Flyback Outputs
o
Soft-Start on Each Output
o
Fully Assembled and Tested
E
MAX1800 Evaluation Kit
________________________________________________________________
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
19-1985; Rev 1; 1/02
Component List
Ordering Information
DESIGNATION
QTY
DESCRIPTION
C1, C22
2
10μF, 10V ceramic
capacitors (1210)
TDK C3225X5R1A106M
C2
1
100pF, ceramic capacitor
(0603)
C3, C15, C21
3
0.1μF ceramic capacitors
(0603)
C4, C18
2
4.7μF, 10V ceramic
capacitors (1206)
TDK C3216X5R1A475M or
Taiyo Yuden
LMK316BJ475ML
C5
C8, C20
5
1000pF ceramic capacitors
(0603)
C9
C14
6
1μF, 25V ceramic capacitors
(1206)
TDK C3216X7R1E105KT
C16
1
4.7μF, 6.3V ceramic
capacitor (0805)
TDK C2012X5R0J475K
PART
TEMP RANGE
0
°
C to +70
°
C
IC PACKAGE
32 TQFP, 8 SOT23
MAX1800EVKIT
DESIGNATION
QTY
DESCRIPTION
C17
1
220μF, 10V, 100m
low-ESR
(E case)
AVX TPSE227M010R0100
C19
1
47μF, 6.3V, 100m
low-ESR
(C case)
Sanyo 6TPA47M
C24
1
0.01μF ceramic capacitor
(0603)
D1, D4, D6
3
PN junction diodes (SOT323)
Central Semiconductor
CMSD-4448
D2, D3, D5, D9
4
Schottky diodes (SOT323)
Central Semiconductor
CMSSH-3
D7, D8
2
Schottky diodes (SOD-123)
Motorola MBR0520L or
Fairchild Semiconductor
MBR0520L
D10
1
Schottky diode (CASE 403A-
03 SMB)
Motorola MBRS130LT3
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1844EEP 功能描述:電流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX1844EEP+ 功能描述:電流型 PWM 控制器 Step-Down Controller RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX1844EEP+T 功能描述:電流型 PWM 控制器 Step-Down Controller RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX1844EEP-T 功能描述:電流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
MAX1844EGP 功能描述:電流型 PWM 控制器 RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
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