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AP5724 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - WHITE LED STEP-UP CONVERTER - Diodes

भाग संख्या AP5724
समारोह WHITE LED STEP-UP CONVERTER
मैन्युफैक्चरर्स Diodes 
लोगो Diodes लोगो 
पूर्व दर्शन
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<?=AP5724?> डेटा पत्रक पीडीएफ

AP5724 pdf
AP5724
Pin Descriptions
Pin Name
SW
GND
FB
EN
OVP
VIN
Functions
Switch Pin. Connect inductor/diode here. Minimize trace area at this pin to reduce EMI.
GND pin.
Feedback Pin. Reference voltage is 0.1V. Connect cathode of lowest LED and a sense resister here. Calculate resistor value
according to the formula: RSET = 0.1V / ILED
Converter On/Off Control Input. A high input at EN turns the converter On, and a low input turns it off. If On/Off control is not
needed, connect EN to the input source for automatic startup. The EN pin cannot be left floating.
Output Voltage detect pin for over voltage protection.
Input Supply Pin. Must be locally bypassed with 1μF or 2.2μF to reduce input noise.
Functional Block Diagram
FB 3
VIN 6
- A1 +
VREF
0.1V
EN 4
Enable
OVP
5
Comparator
A2
CONTROL
Rc LOGIC
OTP
Cc
Σ
RAMP
Generator
1.2MHz
Oscillator
Driver
1 SW
Q1
2 GND
Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.)
Symbol
VIN
VSW
VOVP
VFB
EN
TJ(MAX)
TLEAD
TST
Parameter
VIN Pin Voltage
SW Voltage
OVP Pin Voltage
Feedback Pin Voltage
EN
Maximum Junction Temperature
Lead Temperature
Storage Temperature Range
Rating
-0.3 to +7
-0.3 to +34
-0.3 to +35
-0.3 to +7
-0.3 to +7
150
300
-65 to +150
Unit
V
V
V
V
V
°C
°C
°C
Caution: Operation above the absolute maximum ratings can cause device failure. These values, therefore, must not be exceeded under any condition.
Operation at the absolute maximum rating for extended periods, may reduce device reliability.
AP5724
Document number: DS31843 Rev. 4 - 2
2 of 15
www.diodes.com
December 2013
© Diodes Incorporated

विन्यास 15 पेज
डाउनलोड[ AP5724 Datasheet.PDF ]


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