Fairchild FAN5611, FAN5612, FAN5613, FAN5614 service manual

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FAN5611/FAN5612/FAN5613/FAN5614 Low-Dropout LED Drivers for White, Blue, or any Color LED

Low-Dropout LED Drivers for White, Blue, or any Color LED

November 2006

Features

■ LED drivers for parallel-connected LEDs (2 to 4)

■ Ultra-low voltage drop (< 300mV) to support direct

Li-ion applications

■ No EMI, no switching noise

■ No external components needed for current matching

■ Both analog and PWM brightness control

■ FAN5611, FAN5613 feature up to 160mA bias current

(up to 40mA for each LED)

■ FAN5612 features up to 120mA bias current

(up to 40mA for each LED)

■ FAN5614 features up to 160mA bias current

(up to 80mA for each LED)

■ Enable/Shutdown control (FAN5612, FAN5613,

FAN5614)

■ Shutdown current < 1μA

■ Small footprint SC-70 and MLP

Applications

■ Cell Phones

■ PDA, DSC, MP3 Players

■ Handheld Computers

■ LCD Display Modules

■ Keyboard Backlight

■ LED Displays

Description

The FAN5611/12/13/14 low-dropout product family is designed to drive two to four parallel LEDs, providing matched current source bias for all color LEDs. The LED current is set by an external resistor, R FAN5611/13 supports four parallel LEDs with up to 160mA bias current (up to 40mA per output). The FAN5612 supports three LEDs with up to 120mA bias current (40mA per output). The FAN5614 drives two high-current LEDs (80mA per output). Pin I1 should always be connected to an LED to provide a matched current for any additional LEDs.

The FAN5612/13 and 14 are selected using an ENABLE pin. When the chip is not selected (ENABLE pin is LOW), the supply current drops to less than 1µA.

The FAN5611, FAN5612, and FAN5614 are available in an SC-70 package. The FAN5611 and FAN5613 are available in MLP packages.

SET

. The

Ordering Information

Product Number Package Type Order Code

FAN5611 6-Lead SC-70 / 2x2mm 6-Lead MLP FAN5611S7X / FAN5611MPX FAN5612 6-Lead SC-70 FAN5612S7X FAN5613 2x2mm 8-Lead MLP FAN5613MPX FAN5614 6-Lead SC-70 FAN5614S7X

Table 1. Ordering Information

Typical Applications

FAN5611/FAN5612/FAN5613/FAN5614

V

IN

I

V

CONTROL

SET

(3V

)

CTRL

R

SET

Four Diode Control

Figure 1. Typical Applications for FAN5611, FAN5612, FAN5613, FAN5614

Pin Assignments

FAN5611

GND

CONTROL

V

IN

I

SET

(3V)

R

SET

ENABLE

I3

FAN5613

GND

I2

I1

I4

CTRL

ON/OFF

Four Diode Control With ON/OFF

V

IN

I1I2I3I4

V

(3V)

CONTROL

ENABLE

V

IN

V

CONTROL

I

(3V)

R

ENABLE

I3

I

SET

CTRL

R

SET

ON/OFF

Three Diode Control with ON/OFF

SET

CTRL

SET

ON/OFF

Two Diode Control with ON/OFF

I2

FAN5612

GND

FAN5614

GND

I1

I3/I4I1/I2

V

CTRL

I2

I1

FAN5611

1

6

25

4

3

I3

I4

GND

CTRL

I2

I1

1

6

25

34

ON/OFF

I3

GND

I1/I2

FAN5612

6-LEAD SC-70

TOP VIEW

ON/OFF

D2

CTRL

D3

GND

D1

GND

D4

GND

FAN5611

2x2mm 6-LEAD MPX

Figure 2. Pin Assignments for FAN5611, FAN5612, FAN5613, FAN5614

2x2mm 8-LEAD MLP

TOP VIEW

I3

I4

FAN5613

N/C

1

6

25

34

FAN5614

NC

CTRL

I2

I1

ON/OFFCTRL

I3/I4

GND

Pin Descriptions

Name

Pin #

1 CTRL CTRL CTRL Sets LED Current (see Operational Descripton)

ON/OFF Chip ON/OFF/Disable

2 I2 I2 Connect to Cathode of LED

I3 Connect to Cathode of LED

I1/I2

3 I1 I1 Connect to Cathode of LED

I4 Connect to Cathode of LED

N/C No Connection 4GNDGNDGNDGNDGround 5 I4 Connect to Cathode of LED

I3 Connect to Cathode of LED

I1 Connect to Cathode of LED

I3/I4 Connect to Cathode of LED

6 I3 Connect to Cathode of LED

ON/OFF ON/OFF Chip ON/OFF/Disable

I2 Connect to Cathode of LED 7 CTRL Sets LED Current (see Operational Descripton) 8 NC No Connection

Table 2. Pin Descriptions

DescriptionFAN5611 FAN5612 FAN5613 FAN5614

FAN5611/FAN5612/FAN5613/FAN5614

Notes:

1. The DAP of FAN 5611MPX can be tied to the GND pin or left floating. For better power dissipation, tie to GND.

Absolute Maximum Ratings

The “Absolute Maximum Ratings” are those values beyond wh ich the safety o f the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “R ecommended Operating Cond itions” table defines the conditions for actual device operation.

Parameter Min. Max. Unit

VI1, VI2, VI3, VI4 and ENABLE Voltage to GND -0.3 6.0 V CTRL Voltage to GND -0.3 3.0 Power Dissipated by package at T

I1, I2, I3, I4 Steady State Current FAN5611/12/13 40 mA I1/I2, I3/I4 Steady State Current FAN5614 80 Lead Temperature (Soldering 10 seconds) 300 °C Junction Temperature 150 °C Storage Temperature -55 150 °C Electrostatic Discharge Protection (ESD) Level

Table 3. Absolute Maximum Ratings

= 85°C 6-Lead SC70 190 mW

A

6, 8-Lead MLP 700

(1)

HBM 4 kV CDM 1

FAN5611/FAN5612/FAN5613/FAN5614

Recommended Operating Conditions

Parameter Min. Typ. Max. Unit

LED Cathode Voltage FAN5611, FAN5612, FAN5613 0.3 0.5 1.0 V

FAN5614 0.15

Ambient Temperature -40 25 85 °C

T able 4. Recommended Operating Conditions Notes:

2. Using Mil Std. 883E, method 3015.7 (Human Body Model) and EIA/JESD22C101-A (Charge Device Model).

DC Electrical Characteristics

VIN = 3.3V to 5.5V, ENABLE = VIN, TA = 25°C unless otherwise noted.

Parameter Conditions Min. Typ. Max. Units

= 100µA

I

FAN5611/12/13

Current Gain

FAN5614

LED Current (Per Diode)

FAN5611/12/13

FAN5614

FAN5611/12/13

LED to LED Current Matching

FAN5614

Peak Efficiency V Current in OFF Mode (I Minimum ENABLE “ON Voltage”

and II)V

SET

(2)

(FAN5612, FAN5613, FAN5614) Maximum ENABLE “OFF Volt age”

(2)

(FAN5612, FAN5613 FAN5614)

Table 5. DC Electrical Characteristics Notes:

3. ENABLE “ON” is V

where II1>20mA @ VI1=0.3V, while ENABLE “OFF” is V

EN

SET

V

= 300mV

SAT

I

= 100µA

SET

V

= 150mV

SAT

= 300mV

V

SAT

I

= 100µA

SET

= 150mV

V

SAT

= 100µA

I

SET

V

= 300mV

SAT

I

= 100µA

SET

TA = -40°C to 85°C

V

= 150mV

SAT

= 100µA

I

SET

TA = -40°C to 85°C

= 3V 90 %

IN

= 0V 1 µA

EN

I

= 150µA 2.8 V

SET

140 200 260

20 mA

-3 3

0.5 V

where II1<1μA @ VI1>0.3V.

EN

FAN5611/FAN5612/FAN5613/FAN5614

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