LP3933SLX National Semiconductor, LP3933SLX Datasheet - Page 16

• Manufacturer Part Number: LP3933SLX
• Description: IC LED DRVR WT/RGB BCKLGT 32TCSP
• Manufacturer: National Semiconductor
• Type: Backlight, White LED, RGB (Serial Interface)r

Specifications of LP3933SLX

• Constant Current: Yes
• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 12
• Internal Driver: Yes
• Type - Primary: Backlight, Flash/Torch, LED Blinker, Light Management Unit (LMU)
• Type - Secondary: RGB, White LED
• Frequency: 1MHz
• Voltage - Supply: 2.65 V ~ 2.9 V
• Voltage - Output: 5.3V
• Mounting Type: Surface Mount
• Package / Case: 32-Laminate TCSP
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 120mA
• Internal Switch(s): Yes
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Efficiency: -

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Symbol
C
C
C
C
C
RT
RSO
C
L
D
RGB1
RGB2
R
R
LEDs
BOOST
Recommended External Components
VDD1
VDD2
OUT
IN
VDDIO
VREF
OUT
R1
R2
Note 18: Resistor RT tolerance change will change the timing accuracy of RGB block. Also the boost converter switching frequency will be affected.
, R
, R
G1
G2
, R
, R
B1
B2
V
V
Output Capacitor from FB to GND
Input Capacitor from Battery Voltage to GND
V
Oscillator Frequency Bias Resistor
SO Output Pull-up Resistor
Reference Voltage Capacitor, between V
Boost Converter Inductor
Rectifying Diode, V
RGB LED1
RGB LED2
Current Limit Resistor
Current Limit Resistor
White LEDs
DD1
DD2
DD_IO
Bypass Capacitor
Bypass Capacitor
Bypass Capacitor
Symbol Explanation
F
@
Maxload
List of Recommended External Components
REF
and GND
16
(Continued)
(See Application Note 1291 for resistor size calculation)
Value
100
100
100
100
100
0.3
10
10
82
10
Unit
nF
nF
µF
µF
nF
kΩ
kΩ
nF
µH
V
User Defined
Ceramic, X7R
Ceramic, X7R
Ceramic, X7R/Y5V
Ceramic, X7R/Y5V
Ceramic, X7R
1% (Note 18)
Ceramic, X7R
Shielded, Low ESR, I
Schottky Diode
Type
SAT
A
1A