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AL3065A डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - BOOST CONTROLLER - Diodes

भाग संख्या AL3065A
समारोह BOOST CONTROLLER
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AL3065A pdf
Typical Applications Circuit
VIN
CIN
10µF
L 22µH
ON OFF
10k
VIN
EN
RT
120k
RC
1k
CC
0.22µF
CVCC
2.2µF
RT
COMP
VCC
VCC / DC signal / NC
PWM input
ADIM
DIM
10k
D
OUT
CS
RCS
0.15
COUT1
22µF
ROV1 COUT2
1M22µF
VOUT
ROV2
51k
OVP
CH1
CH2
CH3
CH4
ISET
GND
RISET
10k
AL3065A
Pin Descriptions
Pin Number
SO-16
1
2
Pin Name
CH4
ISET
3 OVP
4 RT
5 EN
6 CS
7 OUT
8 VCC
9 VIN
10 ADIM
11 COMP
12 DIM
13 CH1
14 CH2
15 GND
16 CH3
Function
LED Current Sink 4. If not used—see1- to 3-Channel Recommended Connections.
LED Current Set Pin. The corresponding maximum current of all four strings is set through connecting a
resister from this pin to GND.
Overvoltage Protection Pin. When the OVP pin voltage exceeds 2.0V, the OVP is triggered, and the
power switch is turned off. When the OVP pin voltage drops below Hysteresis voltage, the OVP is
released, and the power switch resumes normal operation.
Frequency Control Pin.
ON/OFF Control Pin. Forcing this pin voltage above 2.4V enables the IC while forcing below 0.5V shuts
down the IC. When the IC is in shutdown mode, all functions are disabled to reduce the supply current
below 3µA.
Power Switch Current Sense Input.
Boost Converter Power Switch Gate Output. This pin outputs high voltage (5V) to drive the external N-
MOSFET.
5V Linear Regulator Output Pin. This pin must be bypassed to GND with a ceramic capacitor.
Supply Input Pin. A capacitor (typical 10µF) must be connected between the VIN and GND to keep the
DC input voltage constant.
Analog Dimming Pin, which is used in conjunction with DIM. When a DC voltage between 0V and 1.5V is
applied to this pin, analog dimming is achieved if DIM is tied HIGH. When a capacitor is connected
between this pin and GND, the PWM signal applied to the DIM pin is filtered and modulates the output
current. When this pin is connected to a HIGH level, direct PWM dimming is achieved.
Soft-Start and Control Loop Compensation.
PWM Dimming Control Pin, which is used in conjunction with ADIM. Apply the PWM signal to this pin. Tie
this pin to logic HIGH level, for analog dimming.
LED Current Sink 1. If not used—see 1- to 3-Channel Recommended Connections.
LED Current Sink 2. If not used—see 1- to 3-Channel Recommended Connections.
Ground.
LED Current Sink 3. If not used—see 1- to 3-Channel Recommended Connections.
AL3065A
Document number: DS41124 Rev. 1 - 2
2 of 16
www.diodes.com
August 2018
© Diodes Incorporated

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