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AL3157 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - HIGH EFFICIENCY 1x/2x CHARGE PUMP LED DRIVER - Diodes

भाग संख्या AL3157
समारोह HIGH EFFICIENCY 1x/2x CHARGE PUMP LED DRIVER
मैन्युफैक्चरर्स Diodes 
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AL3157 pdf
AL3157
HIGH EFFICIENCY 1x/2x CHARGE PUMP LED DRIVER
FOR SMALL SCREEN BACKLIGHTING AND FLASHLIGHT
Pin Descriptions
Pin Name
EN2
PGND
CN
VIN
CP
VOUT
D4
D3
GND
D2
EN1
D1
EP
Pin Number
Description
1 Enable Pin 2: Controls outputs D2, D3 and D4
2 Charge Pump Switch Ground: Connect to GND
3 Negative Terminal of Flying Capacitor
4 Input Power Supply. Decouple with a 2.2µF capacitor between this pin and ground.
5 Positive Terminal of Flying Capacitor
Charge pump output to drive D1~D4 load circuit. Decouple with a 2.2µF capacitor between
6 this pin and ground.
7 Current sink input #4. Drive up to 30mA LED current. Connect to VOUT when un-used.
8 Current sink input #3. Drive up to 30mA LED current. Connect to VOUT when un-used.
9 Ground
10 Current sink input #2. Drive up to 30mA LED current. Connect to VOUT when un-used.
11 Enable Pin 1: Controls output D1
12 Current sink input #1. Drive up to 210mA LED current. Connect to VOUT when un-used.
EP PAD Exposed Pad (bottom). Connect to GND directly underneath the package.
Functional Block Diagram
CN CP
VIN
EN1
EN2
CHARGE PUMP
SWITCHES
SHORT
CIRCUIT
PROTECTION
DIGITAL CONTROL BLOCK
BANDGAP
OSCILLATOR
OVER
TEMPERATURE
PROTECTION
UNDER
VOLTAGE
LOCKOUT
CURRENT
CONTROL
OVER
VOLTAGE
PROTECTION
VOUT
D1
D2
D3
D4
GND
AL3157
Document number: DS35116 Rev. 1 - 2
2 of 9
www.diodes.com
March 2011
© Diodes Incorporated

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डाउनलोड[ AL3157 Datasheet.PDF ]


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भाग संख्याविवरणविनिर्माण
AL3157HIGH EFFICIENCY 1x/2x CHARGE PUMP LED DRIVERDiodes
Diodes
AL3158HIGH EFFICIENCY 1x/2x CHARGE PUMPDiodes
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