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AS1390A PDF даташит

Спецификация AS1390A изготовлена ​​​​«austriamicrosystems AG» и имеет функцию, называемую «High Power Boost Controller and Buck Converter».

Детали детали

Номер произв AS1390A
Описание High Power Boost Controller and Buck Converter
Производители austriamicrosystems AG
логотип austriamicrosystems AG логотип 

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AS1390A Даташит, Описание, Даташиты
Datasheet
AS1390A, AS1390B
High Power Boost Controller and Buck Converter for LED Backlight
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 µP with 5V.
The AS1390A is available in a 20-Pin QFN (4x4mm) package, the
AS1390B comes in a 16-pin SOIC package.
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
Figure 1. AS1390A - Typical Application
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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AS1390A Даташит, Описание, Даташиты
AS1390A, AS1390B
Datasheet - Applications
Figure 2. AS1390B - Typical Application
www.austriamicrosystems.com/Power-Management/AS1390 Revision 1.04
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AS1390A Даташит, Описание, Даташиты
AS1390A, AS1390B
Datasheet - Pin Assignments
4 Pin Assignments
Figure 3. Pin Assignments (Top View)
4.1 Pin Descriptions
Table 1. Pin Descriptions
Pin Number
AS1390A AS1390B
13 5
3 10
6
12
8
19 6
14 1, 16
17 4
5
11
4
15 2
7
13
9
10 -
Pin Name
VDDH
UVLO
COMP_2D
COMP_3D
VBIAS
VDDL
VDDM
FB_2D
FB_3D
GATE
SENSE_2D
SENSE_3D
SENSE_GND
18
LX
2 9 FB_BUCK
20 7 VDDHP
16 3 PGND
11 14 AGND
12 15 EN_BOOST
13 - MODE_3D
- Exposed Pad
Pin Typ
Description
P Supply Voltage
A I/O Undervoltage Lockout
A I/O Compensation Network 2D. default
A I/O Compensation Network 3D
A I/O High Side Regulator Output. Connect this pin to the Supply rail via a capacitor.
A I/O Internal Regulator Output
A I/O Drive Voltage Regulator Output
A I/O FB Input 2D. default
A I/O FB Input 3D
A I/O Gate Driver Output
A I/O Current Sense Input 2D. default
A I/O Current Sense Input 3D
A I/O Current Sense Input GND. (only for AS1390A)
Inductor Connector. Connect an inductor from LX to the output of the buck
A I/O converter
A I/O Feedback Buck Pin. Connect this pin to the output of the buck converter
P Supply for DCDC Buck-Converter
P Power Ground
P Analog Ground
Enable. Enables the Boost-Controller.
D IN 1 = Normal operation;
0 = Shutdown;
Selection for 3D Mode. (only for AS1390A)
D IN 1 = 3D;
0 = 2D;
Exposed Pad. This pad is not connected internally. Can be left floating or connect to
n.c. GND to achieve an optimal thermal performance.
www.austriamicrosystems.com/Power-Management/AS1390 Revision 1.04
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Номер в каталогеОписаниеПроизводители
AS1390AHigh Power Boost Controller and Buck Converteraustriamicrosystems AG
austriamicrosystems AG
AS1390BHigh Power Boost Controller and Buck Converteraustriamicrosystems AG
austriamicrosystems AG

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