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参数资料
| 型号： | MAX1800 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | Digital Camera Step-Up Power Supply |
| 中文描述： | 数码相机升压型电源 |
| 文件页数： | 1/24页 |
| 文件大小： | 461K |
| 代理商： | MAX1800 |
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
相关PDF资料 |
PDF描述 |
|---|---|
| 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) |
| MAX1806EUA18 | 3A Fixed Low Dropout Linear Regulator (LDO) |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1800EHJ | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1800EHJ-T | 功能描述:直流/直流开关转换器 RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1800EVKIT | 功能描述:电源管理IC开发工具 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压: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 |
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