LM3530UME-25A/NOPB National Semiconductor, LM3530UME-25A/NOPB Datasheet - Page 6

• 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

www.national.com
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions for which the device is intended
to be functional, but device parameter specifications may not be guaranteed. For guaranteed specifications and test conditions, see the Electrical Characteristics
table.
Note 2: All voltages are with respect to the potential at the GND pin.
Note 3: For detailed soldering specifications and information, please refer to National Semiconductor Application Note 1112: Micro SMD Wafer Level Chip Scale
Package (AN-1112), available at www.national.com.
Note 4: Internal thermal shutdown circuitry protects the device from permanent damage. Thermal shutdown engages at T
T
Note 5: In applications where high power dissipation and/or poor package thermal resistance is present, the maximum ambient temperature may have to be
derated. Maximum ambient temperature (T
dissipation of the device in the application (P
following equation: T
Note 6: Junction-to-ambient thermal resistance (θ
JEDEC standard JESD51-7. The test board is a 4-layer FR-4 board measuring 102mm x 76mm x 1.6mm with a 2 x 1 array of thermal vias. The ground plane on
the board is 50mm x 50mm. Thickness of copper layers are 36µm/18µm/18µm/36µm (1.5oz/1oz/1oz/1.5oz). Ambient temperature in simulation is 22°C in still air.
Power dissipation is 1W. The value of θ
on PCB material, layout, and environmental conditions. In applications where high maximum power dissipation exists special care must be paid to thermal
dissipation issues.
Note 7: Min and Max limits are guaranteed by design, test, or statistical analysis. Typical (typ.) numbers are not guaranteed, but represent the most likely norm.
Note 8: SCL and SDA must be glitch-free in order for proper brightness control to be realized.
Note 9: The human body model is a 100pF capacitor discharged through 1.5kΩ resistor into each pin. (MIL-STD-883 3015.7).
Note 10: The value for current limit given in the Electrical Table is measured in an open loop test by forcing current into SW until the current limit comparator
threshold is reached. The typical curve for current limit is measured in closed loop using the typical application circuit by increasing IOUT until the peak inductor
current stops increasing. Closed loop data appears higher due to the delay between the comparator trip point and the NFET turning off. This delay allows the
closed loop inductor current to ramp higher after the trip point by approximately 100ns × VIN/L
Note 11: The ALS voltage specification is the maximum trip threshold for the ALS zone boundary (Code 0xFF). Due to random offsets and the mechanism for
which the hysteresis voltage varies, it is recommended that only Codes 0x04 and above be used for Zone Boundary Thresholds. See Zone Boundary Trip Points
and Hysteresis and Minimum Zone Boundary Settings sections.
J
=+125°C (typ.).
A-MAX
= T
J-MAX-OP
– (θ
JA
of this product in the micro SMD package could fall in a range as wide as 60ºC/W to 110ºC/W (if not wider), depending
JA
A-MAX
× P
D-MAX
D-MAX
) is dependent on the maximum operating junction temperature (T
), and the junction-to ambient thermal resistance of the part/package in the application (θ
JA
) is taken from a thermal modeling result, performed under the conditions and guidelines set forth in the
).
6
J-MAX-OP
J
=+140°C (typ.) and disengages at
= +125°C), the maximum power
JA
), as given by the