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SM8130 Datasheet Preview

SM8130 Datasheet

White LED Driver IC

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SM8130 series
White LED Driver IC
OVERVIEW
The SM8130 series are a doubler charge pump DC/DC converter with built-in constant current circuit (inde-
pendent 3ch). Stable output supply can be realized by an input series regulator and an output side charge pump.
1 to 3 lights of white LED connected in parallel can be lighted. Current variation among LED is reduced due to
the independent 3ch constant circuit. Current value sent to white LED can be set by supply level of CONT pin.
In addition, brightness can also be adjusted by controlling of CONT pin supply.
FEATURES
I 1 to 3 lights of white LED (connected in parallel)
lighted
I Output current value can be set by CONT pin sup-
ply (0.25V: 10mA/pcs, 0.50V: 20mA/pcs)
I Brightness adjustable by controlling of CONT pin
supply
I Current variation among LED decreased by high
precision
I LED current regulation function for LED protec-
tion from excess current
(ILIMIT1 to 3 = 30mA ± 10%)
I Input voltage range: 2.7 to 4.6V
I Output voltage: 5.0V (typ)
I Quiescent current: 3.5mA (typ)
I Standby current: 1.0µA (max)
I Switching frequency: 500kHz (typ)
I LED current accuracy: 20mA ± 3%
(VCONT = 0.50V)
I Package: 10-pin SON
PINOUT
(Top view)
CONT 1
ENA 2
C1M 3
VIN 4
C1P 5
10 DIN3
9 DIN2
8 DIN1
7 VSS
6 VOUT
PACKAGE DIMENSIONS
(Unit: mm)
APPLICATIONS
I Cellular phone
I Pager
I Digital still camera
I Handy terminal
I PDAs
I Portable games
I White LED driving
I Smart card reader
I USB port
I Li-ion battery backup supply
I PCMCIA local 5V supply
I Local 3V to 5V conversion
0.45TYP
2.90 ± 0.1
0.5 ± 0.05
0.05
+ 0.1
0.25 0.05
0.05 M
ORDERING INFORMATION
Device
SM8130A50D
Package
10-pin SON
NIPPON PRECISION CIRCUITS INC.—1




NPC

SM8130 Datasheet Preview

SM8130 Datasheet

White LED Driver IC

No Preview Available !

BLOCK DIAGRAM
SM8130 series
VREF
AMP
VIN
ENA
OSC
Soft Start
Driver
MOS
Switch
C1M
C1P
VOUT
CONT
VSS
Current
Limiter
Current
Control
PIN DESCRIPTION
Number
Name
1 CONT
2 ENA
3 C1M
4 VIN
5 C1P
6 VOUT
7 VSS
8 DIN1
9 DIN2
10 DIN3
*1. Input with built-in pull-down resistor
I/O
I
Ip*1
O
O
O
O
Description
LED driving current control voltage input pin
Chip enable (High active)
Charge pump capacitor connection pin 1M
Power supply
Charge pump capacitor connection pin 1P
LED driving voltage output pin
GND
LED driving current control output pin 1
LED driving current control output pin 2
LED driving current control output pin 3
DIN1
DIN2
DIN3
NIPPON PRECISION CIRCUITS INC.—2


Part Number SM8130
Description White LED Driver IC
Maker NPC
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SM8130 Datasheet PDF






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