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LTC3220IPF-PBF Datasheet(PDF) 7 Page - Linear Technology

Part # LTC3220IPF-PBF
Description  360mA Universal 18-Channel LED Driver
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3220IPF-PBF Datasheet(HTML) 7 Page - Linear Technology

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LTC3220/LTC3220-1
7
32201fb
PIN FUNCTIONS
24
1.22V
VIN
25
RST
10
DVCC
12
SDA
11
SCL
22
23
26
27
28
C2M
C1M
C2P
C1P
CPO
29
EXPOSED
PAD
1
2
850kHz
OSCILLATOR
CONTROL
LOGIC
MASTER/SLAVE
REG
SHIFT REGISTER
CHARGE PUMP
18 UNIVERSAL
CURRENT SOURCES
AND DACS
3
4
5
6
7
18
8
9
ULED1
ULED2
ULED3
ULED4
ULED5
ULED6
ULED7
ULED8
ULED9
13
ULED10
14
ULED11
15
ULED12
16
ULED13
17
ULED14
18
ULED15
19
ULED16
20
ULED17
21
ULED18
3220 BD
BLOCK DIAGRAM
SDA (Pin 12): Input Data for the Serial Port. Serial data is
shifted in one bit per clock cycle to control the LTC3220/
LTC3220-1. The logic level is referenced to DVCC.
C1P, C2P, C1M, C2M (Pins 27, 26, 23, 22): Charge Pump
Flying Capacitor Pins. A 2.2μF X7R or X5R ceramic ca-
pacitor should be connected from C1P to C1M and C2P
to C2M.
VIN (Pin 24): Supply Voltage for the Entire Device. This pin
must be bypassed with a single 2.2μF low ESR ceramic
capacitor.
RST (Pin 25): Active Low Reset Input. RST Resets all
internal registers and forces LTC3220/LTC3220-1 into
shutdown mode.
CPO (Pin 28): Output of the Charge Pump. Used to power
all LEDs. A 4.7μF X5R or X7R ceramic capacitor should
be connected to ground.
Exposed Pad (Pin 29): Ground. The Exposed Pad must
be soldered to PCB ground.


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