LM3530UME-25A/NOPB National Semiconductor, LM3530UME-25A/NOPB Datasheet - Page 3

• Manufacturer Part Number: LM3530UME-25A/NOPB
• Description: IC LED DRVR PRGRAM I2C 10LED SMD
• Manufacturer: National Semiconductor
• Series: PowerWise®r

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.
www.national.com