POWER LP3360-B6F 4-channel constant current white led driver Datasheet

Preliminary Datasheet
LP3360
4-Channel Constant Current White LED Driver
General Description
The LP3360 is a low-dropout bias supply for white LEDs is
a high-performance alternative to the simple ballast
resistors used in conventional white LED designs. It
supports 4 white LEDs with regulated constant current for
uniform intensity. The LP3360 maintains low dropout
current regulators. The LP3360 requires a 45mV dropout
at a 20mA load on each output to match the LED brightness.
The brightness of LEDs can be tuned through a pulse width
modulated signal at the PWM pin,the PWM frequency from
200Hz to 10KHz and the Duty from 0 to 100%.
The LP3360 is available in a SOT23-6 or MSOP-8
package.
Features
—
—
—
—
—
—
—
—
2.7V to 6V Input Voltage
20mA maxim sink current
PWM tuned LED brightness through PWM pin
Soft Start Function
Built-in Thermal Protection
IQ<1uA in Shutdown
SOT23-6 or MSOP-8 Package
RoHS Compliant and 100% Lead (Pb)-Free
Typical Application Circuit
3
D1
4
D2
5
D3
D4
6
Vin
PWM
Order Information
LP3360 -
LP3360
2
1
GND
PW M
□ □ □
F: Pb-Free
Package Type
B6: SOT23-6
MS:MSOP-8
Marking Information
Please see website.
Applications
—
—
—
—
LCD Panel
Cellular and Smart mobile phone
PDA/DSC
PMP
LP3360 – Ver. 1.2 Datasheet
Feb.-2008
Page 1 of 6
Preliminary Datasheet
LP3360
Functional Pin Description
P a c k a g e Ty p e
Pin Configurations
SOT23-6
PIN
NAME
DESCRIPTION
SOT23-6
MSOP-8
1
2
2
1,4
3
5
LED4
LED 1 cathode terminal
4
6
LED3
LED2 cathode terminal
5
7
LED2
LED3 cathode terminal
6
8
LED1
LED3 cathode terminal
3
VDD
Power Supply
PWM/EN
MSOP-8
Device enable (active high).
GND/PGND Ground
Function Block Diagram
LP3360 – Ver. 1.2 Datasheet
Feb.-2008
Page 2 of 6
Preliminary Datasheet
Absolute Maximum Ratings
LP3360
—
—
—
Input Voltage to GND (VINA, VINB) ---------------------------------------------------------------------------- 6V
EN/ISET to GND Voltage (Ven/set) ----------------------------------------------------------- 0.3V to Vin+0.3V
Maximum DC Output Current(Iout) ----------------------------------------------------------------------- 150mA
—
Operating Junction Temperature Range (TJ) ---------------------------------------------------- 40℃ to 150℃
—
Maximum Soldering Temperature (at leads, 1 0sec) ----------------------------------------------------- 300℃
Thermal Information
—
Maximum Power Dissipation (PD) SOT23-6 -------------------------------------------------------------- 0.25W
—
Maximum Power Dissipation (PD) MSOP-8 -------------------------------------------------------------- 1.25W
—
Thermal Resistance (JA) ------------------------------------------------------------------------------------ 50℃/W
Electrical Characteristics
(Over recommended operating conditions unless specified otherwise) VINA =3.6V,EN=High, TA=25℃ )
Parameter
Symbol
Conditions
Min.
3
0.6
VOUT
Input Voltage
Output Voltage Range
IQ
Quiescent Current
No Load,1X mode
ISHDN
ILED-ERR
Shutdown Current
ENB = GND
LED Current Accuracy
3mA< ILED<30mA
19
ILED-LED-ERR
LED Channel Matching
Any two channel mismatch
-3
VEN(L)
Enable Threshold Low
VEN(H)
Enable Threshold High
VIN
LP3360 – Ver. 1.2 Datasheet
Feb.-2008
LP3360
Typ.
Max.
5.5
Unit
V
V
VINB
350
uA
0.1
1
µA
20
21
mA
3
%
0.5
V
260
2
V
Page 3 of 6
Preliminary Datasheet
LP3360
Typical Operating Characteristics
LP3360 – Ver. 1.2 Datasheet
Feb.-2008
Page 4 of 6
Preliminary Datasheet
LP3360
Packaging Information
LP3360 – Ver. 1.2 Datasheet
Feb.-2008
Page 5 of 6
Preliminary Datasheet
LP3360 – Ver. 1.2 Datasheet
Feb.-2008
LP3360
Page 6 of 6
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