MAX8622
可快速充电的氙闪光灯充电器，用于数码相机和照相手机
概述
MAX8622反激式开关调节器可对高电压相机闪光灯电容快速高效充电。它非常适用于数码、胶片、蜂窝电话和智能电话照相机，这些产品通常采用2节碱性电池/镍氢电池或单节Li+电池供电。内置低导通电阻n沟道MOSFET可降低开关功耗并提高效率。
关键特性
应用/使用
可对任何尺寸的照相机闪光灯电容充电
100µF电容充至300V需要2.8s
消除浪涌电流
具有高精度，与变压器匝比无关
输入电压监视功能可延长电池寿命
最高1.6A可编程输入限流
稳固的架构允许使用低成本变压器
自动补充电量模式
充电完成指示
小尺寸、3mm x 3mm、10引脚TDFN封装
可拍照蜂窝电话 数码相机 摄像机 个人媒体播放器 可拍照智能电话
Key Specifications:
Multifunction PMICs
Part Number
Primary Topology
Monitor/Control Features
DC-DC/Power Features
LCD/LED/Flash/CCD Features
VIN (min) (V)
VIN (max) (V)
Min. VOUT (V)
Max. VOUT (V)
IOUT (A)
IOUT (A)
Operating Freq. (kHz)
Package
Smallest Available Package (max w/pins) (mm2 )
Price**
MAX8622
Step-Up
Output OVP
Current Limit
Photo Flash
2.5
5.5
1.25
400
0.01
0.01
300
TDFN-EP/10
10
$1.20 @ 1k
See All Multifunction PMICs (79)
Key Specifications:
Step-Up Switching Regulators
Part Number
VIN (min) (V)
VIN (max) (V)
Min. VOUT (V)
Max. VOUT (V)
IOUT (A)
IOUT (A)
Output Adj. Method
Operating Current, ICC (max) (mA)
Number of DC-DC Outputs
Operating Freq. (kHz)
Package
Smallest Available Package (max w/pins) (mm2 )
Price**
MAX8622
2.5
5.5
1.25
400
0.01
0.01
Resistor
0.1
1
300
TDFN-EP/10
10
$1.20 @ 1k
See All Step-Up Switching Regulators (94)
Notes:
** This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
参考文献： 19-3637;
Rev. 0;
2005-06-23
