參數(shù)資料
型號： MAX1800EHJ
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
英文描述： Digital Camera Step-Up Power Supply
中文描述： 2 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PQFP32
封裝： 5 X 5 MM, 1 MM HEIGHT, TQFP-32
文件頁數(shù)： 1/24頁
文件大?。?/td> 461K
代理商： MAX1800EHJ
General Description
The MAX1800 provides a complete power-supply solu-
tion for digital still cameras and video cameras. The
device integrates a high-efficiency main step-up DC-DC
converter, three auxiliary step-up controllers, and an
uncommitted gain block that drives an external P-channel
MOSFET for a linear regulator. The MAX1800 is targeted
for applications that use either two or three primary cells
or a single lithium-ion (Li+) battery.
The main DC-DC converter accepts inputs from +0.7V to
+5.5V and regulates a resistor-adjustable output from
2.7V to 5.5V. It uses an internal synchronous rectifier to
regulate the output with 95% efficiency. An adjustable
operating frequency facilitates designs for optimum size,
cost, and efficiency.
The auxiliary step-up controllers can be used to power a
digital camera’s CCD, LCD, and backlight. The MAX1800
also features expandability by supplying power, oscillator
signal, and reference to the MAX1801, a low-cost slave
DC-DC controller that supports step-up, SEPIC, and fly-
back configurations.
The MAX1800 is available in a space-saving 32-pin TQFP
package (5mm x 5mm body), and the MAX1801 is avail-
able in an 8-pin SOT package. An evaluation kit
(MAX1800EVKIT) featuring both devices is available to
expedite designs.
________________________Applications
Digital Still Cameras PDAs
Digital Video Cameras DVD Players
Hand-Held Devices
Internet Access Tablets
Features
o
+0.7V to +5.5V Input Voltage Range
o
Main DC-DC Converter
95% Efficiency
+2.7V to +5.5V Adjustable Output Voltage
1.5A Load Current
o
Uncommitted Gain Block for Linear Regulator
o
Three Independent Auxiliary Step-Up Controllers
Adjustable Maximum Duty Cycle
o
Oscillator and Reference Outputs to Drive External
Slave Controllers (MAX1801)
o
Power-Ready Output
o
Up to 1MHz Switching Frequency
o
1μA Supply Current in Shutdown Mode
o
Internal Soft-Start Control
o
Overload Protection for all DC-DC Converters
o
Compact 32-Pin TQFP Package (5mm x 5mm body)
M
Digital Camera Step-Up
Power Supply
________________________________________________________________
Maxim Integrated Products
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1
Typical Operating Circuit
19-1833; Rev 0; 10/00
EVALUATION KIT
AVAILABLE
Ordering Information
MAX1800
MASTER
MAX1801
SLAVE
INPUT
0.7V TO 5.5V
OSC
REF
MOTOR
TFT
CCD
CCFL
CORE
MAIN
MAX1800
TQFP
TOP VIEW
32
28
29
30
31
25
26
27
O
F
C
D
D
O
A
A
10
13
15
14
16
11
12
9
O
C
F
O
D
G
R
O
17
18
19
20
21
22
23
RDYM
24
ONM
POUT
LX
LX
PGND
COMPM
FBM
2
3
4
5
6
7
8
DL2
POUT
DCON1
COMP1
FB1
ON1
DL1
1
PGND
Pin Configuration
PART
TEMP. RANGE
-40
°
C to +85
°
C
PIN-PACKAGE
32 TQFP
MAX1800
EHJ
相關PDF資料
PDF描述
MAX1800 Digital Camera Step-Up Power Supply
MAX1806 3A Fixed Low Dropout Linear Regulator (LDO)
MAX1806EUA 3A Fixed Low Dropout Linear Regulator (LDO)
MAX1806EUA08 3A Fixed Low Dropout Linear Regulator (LDO)
MAX1806EUA15 3A Fixed Low Dropout Linear Regulator (LDO)
相關代理商/技術參數(shù)
參數(shù)描述
MAX1800EHJ-T 功能描述:直流/直流開關轉換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關頻率: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
MAX1800EVKIT 功能描述:電源管理IC開發(fā)工具 RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V
MAX1801EKA 制造商:Maxim Integrated Products 功能描述:DIGITAL CAMERA STEP-UP SLAVE DC-DC - Rail/Tube
MAX1801EKA+ 制造商:Maxim Integrated Products 功能描述:DC DC CNTRLR SGL-OUT STEP UP 2.7V TO 5.5V 8PIN SOT-23 - Rail/Tube
MAX1801EKA+T 功能描述:DC/DC 開關控制器 Step-Up Slave DC/DC Controller RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 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 安裝風格: 封裝 / 箱體:CPAK
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