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ADD5211ACPZ-RL 데이터시트(PDF) 4 Page - Analog Devices

부품명 ADD5211ACPZ-RL
상세설명  Four-String, White LED Driver for LCD Backlight Applications
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ADD5211ACPZ-RL 데이터시트(HTML) 4 Page - Analog Devices

  ADD5211ACPZ-RL Datasheet HTML 1Page - Analog Devices ADD5211ACPZ-RL Datasheet HTML 2Page - Analog Devices ADD5211ACPZ-RL Datasheet HTML 3Page - Analog Devices ADD5211ACPZ-RL Datasheet HTML 4Page - Analog Devices ADD5211ACPZ-RL Datasheet HTML 5Page - Analog Devices ADD5211ACPZ-RL Datasheet HTML 6Page - Analog Devices  
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ADD5211
Preliminary Technical Data
Rev. PrA | Page 4 of 6
PIN CONFIGURATION AND FUNCTION
DESCRIPTIONS
2
1
3
4
5
6
18
17
16
15
14
13
FAULT
PWM
EN
VIN
UVLO
VDR
FB1
FB2
LGND
FB3
FB4
OVP
ADD5211
TOP VIEW
NOTES
1. CONNECT THE EXPOSED PADDLE TO GROUND.
Figure 3. Pin Configuration
Table 3. Pin Function Descriptions
Pin
No.
Mnemonic
Description
1
VDR
Switching MOSFET Gate Driver Supply Pin.
Bypass VDR to AGND with a 1 µF bypass
capacitor.
2
UVLO
Input Undervoltage Lockout. Set the start-
up and shutdown input voltage level by
connecting this pin to the input voltage
through a voltage divide resistor.
3
VIN
Supply Input Pin. Bypass VIN to AGND with
a 1 µF bypass capacitor.
4
EN
Shutdown Control Pin for PWM Input
Operation Mode.
5
PWM
PWM Signal Input.
6
FAULT
Open Drain Fault Output.
7
SS
Soft Start Pin.
8
COMP
Compensation for the Boost Converter. Two
capacitors and a resistor are connected in
series between ground and this pin for
stable operation.
9
FREQ
Frequency Select. A resistor from this pin to
Pin
No.
Mnemonic
Description
ground sets the boost switching frequency
from 200 kHz to 1.2 MHz.
10
ISET
Full-Scale LED Current Set. A resistor from
this pin to ground sets the LED current up
to 200 mA.
11
VDD
Internal Linear Regulator Output. This
regulator provides power to the ADD5211.
Bypass VDD to AGND with a 1 µF bypass
capacitor.
12
LSD
LED Short Voltage Level Setting Pin. To
disable LED short protection, connect this
pin to VDD.
13
FB1
Regulated Current Sink. Connect the
bottom cathode of the LED string to this
pin. If unused, connect FB1 to LGND.
14
FB2
Regulated Current Sink. Connect the
bottom cathode of the LED string to this
pin. If unused, connect FB2 to LGND.
15
LGND
LED Current Sink Ground.
16
FB3
Regulated Current Sink. Connect the
bottom cathode of the LED string to this
pin. If unused, connect FB3 to LGND.
17
FB4
Regulated Current Sink. Connect the
bottom cathode of the LED string to this
pin. If unused, connect FB4 to LGND.
18
OVP
Overvoltage Protection. The boost
converter output is connected to this pin
with voltage divide resistors.
19
PGND
Power Ground.
20
RAMP
Ramp Compensation Pin.
21
CS
Current Sense Input. Allows the current
sensing to control the boost and to limit the
switching current.
22
GATE_N
Switching MOSFET Gate Low Driving Pin.
23
GATE_P
Switching MOSFET Gate High Driving Pin.
24
AGND
Analog Ground.
EP
Exposed Paddle. Connect the exposed
paddle to ground.


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