LP3958TL/NOPB National Semiconductor, LP3958TL/NOPB Datasheet - Page 10
![IC LED DRVR WT/CLR BCKLT 25-USMD](/photos/7/37/73794/tla25cca_sml.jpg)
LP3958TL/NOPB
Manufacturer Part Number
LP3958TL/NOPB
Description
IC LED DRVR WT/CLR BCKLT 25-USMD
Manufacturer
National Semiconductor
Series
PowerWise®r
Type
Backlight, White LED, Color LEDr
Datasheet
1.LP3958TLNOPB.pdf
(28 pages)
Specifications of LP3958TL/NOPB
Constant Current
Yes
Topology
PWM, Step-Up (Boost)
Number Of Outputs
5
Internal Driver
Yes
Type - Primary
Backlight, Light Management Unit (LMU)
Type - Secondary
White LED
Frequency
1MHz
Voltage - Supply
3 V ~ 5.5 V
Voltage - Output
18V
Mounting Type
Surface Mount
Package / Case
25-MicroSMD
Operating Temperature
-30°C ~ 85°C
Internal Switch(s)
Yes
Efficiency
90%
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Output / Channel
-
Other names
LP3958TLTR
www.national.com
Boost Converter Typical Performance Characteristics
Vin = 3.6V, Vout = 18.0V if not otherwise stated
Boost Line Regulation 3.0V - 3.6V, no load
Boost Converter Efficiency
Battery Current vs Voltage
20175579
20175581
20175583
10
Boost Typical Waveforms at 70mA Load
Boost Turn On Time with No Load
Boost Output Voltage vs. Current
20175584
20175582
20175580