FAN5702UC30X Fairchild Semiconductor, FAN5702UC30X Datasheet

IC LED DVR 6LED 30MA I2C 16WLCSP

FAN5702UC30X

Manufacturer Part Number
FAN5702UC30X
Description
IC LED DVR 6LED 30MA I2C 16WLCSP
Manufacturer
Fairchild Semiconductor
Type
Backlight, White LED (I²C Interface)r
Datasheet

Specifications of FAN5702UC30X

Topology
PWM, Switched Capacitor (Charge Pump)
Number Of Outputs
6
Internal Driver
Yes
Type - Primary
Backlight
Type - Secondary
White LED
Frequency
900kHz ~ 1.5MHz
Voltage - Supply
2.7 V ~ 5.5 V
Voltage - Output
2 V ~ 4 V
Mounting Type
Surface Mount
Package / Case
16-WLCSP
Operating Temperature
-40°C ~ 85°C
Current - Output / Channel
30mA
Internal Switch(s)
Yes
Efficiency
92%
High Level Output Current
180 mA
Operating Supply Voltage
2.7 V to 5.5 V
Maximum Supply Current
4.4 mA
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
FAN5702UC30XTR
© 2010 Fairchild Semiconductor Corporation
FAN5702 • Rev. 1.0.3
Features
Applications
FAN5702
Configurable 180mA 6-LED Driver with I
Ordering Information
Six (6) Parallel LEDs (up to 30mA Each)
Total Package Load Current Capability: 180mA
Group from 2 to 6 LEDs for Flexible Backlighting
I
>600:1 Dimming Ratio for 100Hz PWM Frequency
Logarithmically Controlled Dimming with 64 Steps
Secondary Brightness Control Using PWM Dimming
up to 20kHz in Conjunction with I
Up to 92% Efficiency
Built-in 1.5x Charge Pump with Low Drop-Out Bypass
Switch and automatic switching to 1x mode
1.2MHz Switching Frequency for Small-Sized Capacitors
16-Bump 1.6mm × 1.6mm WLCSP (0.6mm Height)
16-Lead 3.0mm x 3.0mm UMLP (0.55mm Height)
LCD Backlighting
Mobile Handsets / Smartphones
Portable Media Players
2
C Interface for Easy Programming
− Dynamic Backlight Control (DBC) to Reduce Current
Consumption
FAN5702UMP30X
FAN5702UMP20X
FAN5702UMP15X
FAN5702UMP08X
FAN5702UC30X
FAN5702UC20X
FAN5702UC15X
FAN5702UC08X
Part Number
2
C Dimming
LED Current
30mA
20mA
15mA
30mA
20mA
15mA
(I
8mA
8mA
SET
)
Temperature
-40 to 85°C
-40 to 85°C
-40 to 85°C
-40 to 85°C
-40 to 85°C
-40 to 85°C
-40 to 85°C
-40 to 85°C
Range
Description
The FAN5702 is a highly integrated and configurable charge-
pump-based multi-LED driver. The device can drive up to six
LEDs in parallel with a total output current of 180mA.
Regulated internal current sinks deliver excellent current and
brightness matching to all LEDs.
The FAN5702 has an I
independently control the brightness with a default grouping of
2,1,1,1,1 for a maximum of five independent lighting channels.
The LED driver can be programmed in a multitude of
configurations to address broad lighting requirements for
different platforms. Each LED can be configured through I
as five independent channels (Group A has two LEDs by
default) or any additional LEDs can join Group A to increase
the backlighting needs as the display size increases. The
device offers a second dimming control using the EN/PWM
pin. Applying a PWM dimming signal to this pin allows control
of the dimming of Group A LEDs so that the average current is
the linear value multiplied by the PWM dimming duty-cycle.
The device provides excellent efficiency, without an inductor,
by operating the charge pump in 1.5x or pass-through mode.
The FAN5702 can be ordered with default I
30mA, 20mA, 15mA, or 8mA. The default I
determined by the I
WLCSP-16, 0.4mm Pitch
WLCSP-16, 0.4mm Pitch
WLCSP-16, 0.4mm Pitch
WLCSP-16, 0.4mm Pitch
UMLP-16, 3.0 x 3.0 x 0.55mm
UMLP-16, 3.0 x 3.0 x 0.55mm
UMLP-16, 3.0 x 3.0 x 0.55mm
UMLP-16, 3.0 x 3.0 x 0.55mm
SET
2
Package
C Control
ordered (see Ordering Information).
2
C interface that allows the user to
www.fairchildsemi.com
August 2010
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
Tape and Reel
SET
SET
Packing
is always
values of
2
C

Related parts for FAN5702UC30X

FAN5702UC30X Summary of contents

Page 1

... Switching Frequency for Small-Sized Capacitors 16-Bump 1.6mm × 1.6mm WLCSP (0.6mm Height) 16-Lead 3.0mm x 3.0mm UMLP (0.55mm Height) Applications LCD Backlighting Mobile Handsets / Smartphones Portable Media Players Ordering Information Part Number FAN5702UC30X FAN5702UC20X FAN5702UC15X FAN5702UC08X FAN5702UMP30X FAN5702UMP20X FAN5702UMP15X FAN5702UMP08X © 2010 Fairchild Semiconductor Corporation FAN5702 • ...

Page 2

... Typical Application © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 Figure 1. Typical Application 2 www.fairchildsemi.com ...

Page 3

... I functions as a PWM dimming input for Group A. To restore the Enable function, the General Purpose register bit 7 must be set LOW SDA I C interface serial data 2 A3 SCL I C interface serial clock © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0 Figure 2 ...

Page 4

... SDA I C interface serial data 2 3 SCL I C interface serial clock © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 Bottom View Figure 3. UMLP-16, 0.5mm Pitch, 3mm x 3mm Description communications) are disabled. By setting General Purpose register bit the pin 4 input power source. ...

Page 5

... Junction-to-ambient thermal resistance is a function of application and board layout. This data is measured with four-layer 2s2p boards in accordance to JESD51-7 JEDEC standard. Special attention must be paid not to exceed junction temperature given ambient temperate T J(max) © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 Parameter Human Body Model per JESD22-A114 Charged Device Model per JESD22-C101 ...

Page 6

... For each Dxx pin, headroom voltage is the voltage across the internal current sink connected to that pin headroom voltage requirement is not met, LED current regulation is compromised. LED © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 = -40°C to +85°C; and ENA, EN3, EN4, EN5, and EN6 = 1. Typical values are A Conditions 1 ...

Page 7

... Figure 4. Efficiency with LED Current of 8mA and 20mA Figure 6. LED Current Variation vs. Temperature Figure 8. Switching Frequency over Temperature with LED Current at 20mA © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 Figure 5. LED Current Match for all 6 LED Channels at I =20mA. ...

Page 8

... LEDx Figure 13. Line Transient from 1x to 1.5x Mode, V =3.2V – 4.1V LEDx © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 Figure 10. Mode Transition from 1. Mode Using PWM Control (V Figure 12. Line Transient Response in 1.5x Mode, =20mA Figure 14. Soft-Start with SDA and SCL ...

Page 9

... Typical Characteristics Figure 15. Linear Dimming via I I =20mA, and t LEDx RAMP Figure 17. PWM and Linear (via I I =20mA, and EN=1kHz with 20% Duty Cycle LEDx © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0 Interface, V =3.6V, Figure 16. PWM Dimming =6.4ms 2 C) Dimming ...

Page 10

... R t HIGH SCL t LOW t t HD;STA HD;DAT START Figure 18. I © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 Conditions Standard Mode Fast Mode Standard mode Fast Mode Standard Mode Fast Mode Standard Mode Fast Mode Standard Mode Fast Mode Standard Mode ...

Page 11

... To change the PWM dimming pin back to the EN function, set the General Purpose register bit © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 Register Controlled Brightness The DC value of the LED current is modulated according to the values in Table 1 ...

Page 12

... ACK. All data is shifted in MSB (bit 7) first. Slave Address The FAN5702’s slave address is 6CH. 2 Table Slave Address © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 Register Addressing The FAN5702 has six user-accessible registers. 2 Table Register Addresses GENERAL 6.4ms CONFIG 1600ms CHA 3200ms CH3 6400ms CH4 ...

Page 13

... Slave Address 7 bits S Slave Address 0 © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 During a read from the FAN5702 (Figure 23), the master issues a “Repeated Start” after sending the register address and before resending the slave address. The “Repeated Start” ...

Page 14

... Brightness 6 00 – 3FH © 2010 Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 General Purpose Register Setting this bit=1 changes the EN pin to function as a PWM dimming input for 0 group A LEDs. This bit must be set to zero for the chip to be disabled. ...

Page 15

... Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’ ...

Page 16

... Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’ ...

Page 17

... Fairchild Semiconductor Corporation FAN5702 • Rev. 1.0.3 17 www.fairchildsemi.com ...

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