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LM3538 데이터시트(PDF) 3 Page - Texas Instruments

부품명 LM3538
상세설명  6-Channel WLED Driver with Four Integrated LDOs
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제조업체  TI1 [Texas Instruments]
홈페이지  http://www.ti.com
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LM3538 데이터시트(HTML) 3 Page - Texas Instruments

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LM3538
www.ti.com
SNVS674A – JUNE 2011 – REVISED MAY 2013
PIN DESCRIPTIONS
Bump
Name
Description
C5
VIN_A
Input voltage for LED driver and sensor interface. Input range: 2.7V to 5.5V.
E5
VIN_B
Input voltage for the regulators. This must be connected to the same voltage supply as
VIN_A
F5
VIN_C
Input voltage (power rail) for the LDO regulators. 1.8V
≤ VIN_C ≤ VIN_A
B1
SCL
Serial interface clock
B3
SDA
Serial interface data
A1
HWEN
Hardware enable pin. High = normal operation, low = RESET
B2
PWM
External PWM Input - Allows the current sinks to be turned on and off at a frequency and
duty cycle externally controlled. Minimum on-time pulse width = 15µsec.
E4
SBIAS
Power supply for a light sensor. Leave unconnected if not used.
E3
GPO1
General purpose output. Can be used as a sensor gain control signal. When functioning
as a general purpose output, it is open drain and requires an external pullup. Leave
unconnected if not used.
E2
GPO2
General purpose output. Can be used as a sensor gain control signal. When functioning
as a general purpose output, it is open drain and requires an external pullup. Leave
unconnected if not used.
D5
ALS
Ambient Light Sensor input. Connect to ground if not used.
F3
GND
Regulator ground
A2
PGND
LED driver and charge pump ground
F2
LDO4
Programmable VOUT of 1.2-3.3 V. Max load = 150mA.
F4
LDO3
Programmable VOUT of 1.2-3.3 V. Max load = 150mA.
E1
LDO2
Programmable VOUT of 1.2-3.3 V. Max load = 150mA.
F1
LDO1
Programmable VOUT of 1.2-3.3 V. Max load = 300mA.
C3
NC
Not Connected, keep floating.
C4
INT
ALS interrupt. A pullup resistor is required. A '0’ means a change has occurred, while a ‘1’
means no ALS adjustment has been made.
D4
D6
LED driver
D3
D5
LED driver
D2
D4
LED driver
D1
D3
LED driver
C1
D2
LED driver
C2
D1
LED driver
B5
VOUT
Charge pump output
B4
C2-
Flying capacitor 2 negative terminal
A4
C2+
Flying capacitor 2 positive terminal
A3
C1-
Flying capacitor 1 negative terminal
A5
C1+
Flying capacitor 1 positive terminal
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Copyright © 2011–2013, Texas Instruments Incorporated
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