LM3530UME-25A/NOPB National Semiconductor, LM3530UME-25A/NOPB Datasheet - Page 3
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LM3530UME-25A/NOPB
Manufacturer Part Number
LM3530UME-25A/NOPB
Description
IC LED DRVR PRGRAM I2C 10LED SMD
Manufacturer
National Semiconductor
Series
PowerWise®r
Datasheet
1.LM3530UME-40NOPB.pdf
(44 pages)
Specifications of LM3530UME-25A/NOPB
Topology
PWM, Step-Up (Boost)
Number Of Outputs
1
Internal Driver
Yes
Type - Primary
Backlight
Type - Secondary
White LED
Frequency
500kHz
Voltage - Supply
2.7 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
12-XFBGA
Operating Temperature
-40°C ~ 85°C
Current - Output / Channel
Adjustable
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Other names
LM3530UME-25A/NOPBTR
Pin Descriptions/Functions
Pin
C3
D2
A3
D3
D1
A1
A2
B3
C1
B1
B2
C2
Name
IN
OVP
SW
ILED
ALS1
SDA
SCL
GND
ALS2
PWM
INT
HWEN
Description
Input Voltage Connection. Connect a 2.7V to 5.5V supply to IN and bypass to GND with a 2.2µF
or greater ceramic capacitor.
Output Voltage Sense Connection for Over-Voltage Sensing. Connect OVP to the positive
terminal of the output capacitor.
Inductor Connection, Diode Anode Connection, and Drain Connection for Internal NFET.
Connect the inductor and diode as close as possible to SW to reduce parasitic inductance and
capacitive coupling to nearby traces.
Input Terminal to Internal Current Sink. The boost converter regulates ILED to 0.4V.
Ambient Light Sensor Input #1 with Programmable Internal Pull-down Resistor.
Serial Data Connection for I
Serial Clock Connection for I
Ground
Ambient Light Sensor Input #2 with Programmable Internal Pull-down Resistor.
External PWM Brightness Control Input and Simple Enable Input.
Logic Interrupt Output Signaling the ALS Zone Has Changed.
Active High Hardware Enable (Active Low Reset). Pull this pin high to enable the LM3530.
2
3
C-Compatible Interface.
2
C-Compatible Interface.
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