LM3530UME-40/NOPB National Semiconductor, LM3530UME-40/NOPB Datasheet - Page 28
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LM3530UME-40/NOPB
Manufacturer Part Number
LM3530UME-40/NOPB
Description
IC LED DRVR PROGRAM I2C 12USMD
Manufacturer
National Semiconductor
Series
PowerWise®r
Datasheet
1.LM3530UME-40NOPB.pdf
(44 pages)
Specifications of LM3530UME-40/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-UFBGA
Operating Temperature
-40°C ~ 85°C
Current - Output / Channel
Adjustable
Led Driver Application
LED Backlighting, Portable Electronics
No. Of Outputs
1
Output Current
29.5mA
Output Voltage
40V
Input Voltage
2.7V To 5.5V
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Other names
LM3530UME-40TR
www.national.com
GENERAL CONFIGURATION REGISTER (GP)
The General Configuration Register (address 0x10) is de-
scribed in
ALS CONFIGURATION REGISTER
The ALS Configuration Register controls the Ambient Light
Sensing input functions and is described in
Table
Bit 7
(PWM Simple
Enable
0 = Simple
Interface at
PWM Input is
Disabled
1 = Simple
Interface at
PWM Input is
Enabled
6.
Figure 18
Bit 6
(PWM
Polarity)
0 = PWM
active high
1 = PWM
active low
and
Table
5.
TABLE 5. General Configuration Register Description (0x10)
Bit 5
(EN_PWM)
see Figure 8
0 = LED current
is not a function
of PWM duty
cycle
1 = LED current
is a function of
duty cycle
FIGURE 18. General Configuration Register
FIGURE 19. ALS Configuration Register
Figure 19
Bit 4
(Full-Scale
Current
Select)
000 = 5 mA full-scale current
001 = 8.5 mA full-scale current
010 = 12 mA full-scale current
011 = 15.5 mA full-scale current
100 = 19 mA full-scale current
101 = 22.5 mA full-scale current
110 = 26 mA full-scale current
111 = 29.5 mA full-scale current
and
28
Bit 3
(Full-Scale
Current
Select)
Bit 2
(Full-Scale
Current
Select)
Bit 1
(Mapping
Mode Select)
0 =
exponential
mapping
1 = linear
mapping
30086609
30086610
Bit 0
(I
Enable)
0 = Device
Disabled
1 = Device
Enabled
2
C Device