参数资料
型号: AS1390A-ZQFT
厂商: ams
文件页数: 2/21页
文件大小: 0K
描述: IC BOOST CTLR/BUCK CONV 20-QFN
标准包装: 6,000
拓扑: 降压(降压),升压(升压)
输出数: 1
内部驱动器:
类型 - 主要: 背光
电源电压: 10 V ~ 30 V
安装类型: 表面贴装
封装/外壳: 20-VFQFN 裸露焊盘
供应商设备封装: 20-QFN(4x4)
包装: 带卷 (TR)
工作温度: -40°C ~ 85°C
D at ash ee t
A S1 3 9 0 A , A S1 3 9 0 B
Hi g h P o w e r B o o s t C o n t r o lle r a n d B u c k C o n v e r te r f o r L E D B a c k lig h t
1 General Description
The AS1390A, AS1390B is a high-power, constant-frequency boost
controller with an integrated buck converter. The AS1390A can be
used for the boost converter in TV sets which are optimized for 2D
and 3D mode. AS1390B is designed for single mode operation.
The continuous conduction mode of the AS1390 provides superior
bandwith and transient response. The two output voltages for the
boost controller (2D and 3D mode) can be programmed with an
external resistor divider.
The buck converter is optimized for suppling a P with 5V.
The AS1390A is available in a 20-Pin QFN (4x4mm) package, the
AS1390B comes in a 16-pin SOIC package.
Figure 1. AS1390A - Typical Application
2 Key Features
High Efficiency: Up to 95%
Supply Voltage Range: 10V to 30V
Boost Output Current: up to 3A
Continuous Conduction Mode
Undervoltage Lockout with hysteresis
Overvoltage, Overcurrent and Overtemperature Protection
Low Dropout Operation: 90% Duty Cycle
Buck always ON, Boost with enable PIN
Packages:
- 20-Pin QFN (4x4mm)
- 16-pin SOIC
3 Applications
The device is ideal for LED backlighting for LCD - TV sets and
monitors.
www.austriamicrosystems.com/Power-Management/AS1390
Revision 1.04
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