LED Driver. RP1364A Datasheet

RP1364A Driver. Datasheet pdf. Equivalent

RP1364A Datasheet
Recommendation RP1364A Datasheet
Part RP1364A
Description 4 Channels 100mA x1/x1.5/x2 Charge Pump White LED Driver
Feature RP1364A; Preliminary RP1364A 4 Channels 100mA x1/x1.5/x2 Charge Pump White LED Driver General Description .
Manufacture RICHPOWER
Datasheet
Download RP1364A Datasheet




RICHPOWER RP1364A
Preliminary
RP1364A
4 Channels 100mA x1/x1.5/x2 Charge Pump White LED Driver
General Description
The RP1364A is a 4 channel WLED driver with auto mode
selection of x1, x1.5 and x2 mode with low dropout voltage
in current sources. The RP1364A can power up to 4 white
LEDs with regulated constant current for uniform intensity.
Each channel (LED1 to LED4) can support up to 25mA.
The part maintains highest efficiency by utilizing x1/x1.5/
x2 fractional charge pump and low dropout current
regulators. An internal 5-bit DAC is used for brightness
control. Users can easily configure up to 16-step of LED
current by enable pin.
The RP1364A is available in a WQFN-16L 3x3 package.
Small 0.22uF capacitors can be used for fly capacitors. It
provides the best backlighting solution with high efficiency
and smallest board space for portable application.
Ordering Information
RP1364A
Package Type
QW : WQFN-16L 3x3 (Option 1)
Operating Temperature Range
G : Green (Halogen Free with Commer-
cial Standard)
Note :
Richpower Green products are :
RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Features
Efficiency Up to 93% Over Li-ion Battery Discharge
Typical 85% Average Efficiency Over Li-ion Battery
Discharge
Support Up to 4 White LEDs
Support Up to 25mA/Per Channel
Support Up to 100mA Output Current
Flexible 16-step Brightness Control
60mV Typical Current Source Dropout
1% Typical LED Current Accuracy
0.7% Typical LED Current Matching
Automatic x1/x1.5/x2 Charge Pump Mode
Transition
Low Input Noise and EMI Charge Pump
5V Over Voltage Protection
Power On/Mode Transition In-rush Protection
1MHz Switching Frequency
Typical 0.4uA Low Shutdown Current
RoHS Compliant and Halogen Free
Applications
Camera Phone, Smart Phone
White LED Backlighting
Pin Configurations
Marking Information
For marking information, contact our sales representative
directly or through a Richpower distributor located in your
area, otherwise visit our website for detail.
(TOP VIEW)
16 15 14 13
C2N
C1N
C1P
C2P
1
2
3
4
GND
12 LED2
11 LED3
10 LED4
9 NC
5678
RP1364A-00P July 2009
WQFN-16L 3x3
1



RICHPOWER RP1364A
RP1364A
Functional Pin Description
Preliminary
Pin Number
1
2
3
4
5
6
7
8
9, 15
10
11
12
13
14
16
Exposed Pad
Pin Name
C2N
C1N
C1P
C2P
AG ND
PGND
VIN
EN
NC
LED 4
LED 3
LED 2
LED 1
VOUT
NC
GND
Pin Function
Negative Terminal of Bucket Capacitor 2.
Negative Terminal of Bucket Capacitor 1.
Positive Terminal of Bucket Capacitor 1.
Positive Terminal of Bucket Capacitor 2.
Analog Ground.
Power Ground.
Power Input Voltage.
Chip Enable (Active High), and connects to GPIO pin of MCU.
No Internal Connection.
Current Sink for LED4. (If not in use, pin should be connected to VIN)
Current Sink for LED3. (If not in use, pin should be connected to VIN)
Current Sink for LED2. (If not in use, pin should be connected to VIN)
Current Sink for LED1. (If not in use, pin should be connected to VIN)
Output Voltage Source for LED1 to LED4.
No Internal Connection.
Exposed pad should be soldered to PCB board and connected to GND.
Typical Application Circuit
CFLY1
0.22uF
CFLY2
0.22uF
VIN
2.8V to 5V
Pulse Dimming
3
C1P
7 VIN
CIN
1uF
8 EN
5,6, Exposed pad(17)
GND
24 1
C1N C2P C2N
RP1364A
LED1 13
LED2 12
LED3 11
LED4 10
VOUT 14
COUT
1uF
Timing Diagram (16-steps Pulse Dimming and Shutdown Delay)
30us < tREADY 0.5us < tHI
0.5us < tLO < 500us
3ms < tSHDN
EN 0
1 2 3 4 5 14
Shutdown
ILEDx
100% 15/16 14/16 13/16 12/16 3/16
2/16
15 0 1
100% 15/16
1/16
Shutdown
2 RP1364A-00P July 2009



RICHPOWER RP1364A
Preliminary
Function Block Diagram
C1P C1N C2P C2N
RP1364A
VIN
EN
GND
Soft Start
Circuit
Gate Driver
1MHz
OSC
Mode Decision
UVLO
PWM Dimming
Controller
Shutdown Delay
2uA Current
Bias
+ Vr1
-
Min VDS
Current Source
OVP
VOUT
LED1
LED2
LED3
LED4
Absolute Maximum Ratings (Note 1)
Supply Input Voltage, VIN ----------------------------------------------------------------------------------------------- 0.3V to 5V
Output Voltage, VOUT ----------------------------------------------------------------------------------------------------- 5V to 0.3V
Power Dissipation, PD @ TA = 25°C
WQFN-16L 3x3 ------------------------------------------------------------------------------------------------------------ 1.47W
Package Thermal Resistance (Note 4)
WQFN-16L 3x3, θJA ------------------------------------------------------------------------------------------------------ 68°C/W
Junction Temperature ----------------------------------------------------------------------------------------------------- 150°C
Lead Temperature (Soldering, 10 sec.) ------------------------------------------------------------------------------- 260°C
Storage Temperature Range -------------------------------------------------------------------------------------------- 40°C to 150°C
ESD Susceptibility (Note 2)
HBM (Human Body Mode) ---------------------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ------------------------------------------------------------------------------------------------------ 200V
Recommended Operating Conditions (Note 3)
Junction Temperature Range -------------------------------------------------------------------------------------------- 40°C to 125°C
Ambient Temperature Range -------------------------------------------------------------------------------------------- 40°C to 85°C
RP1364A-00P July 2009
3







@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)