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PDF FAN5622 Data sheet ( Hoja de datos )

Número de pieza FAN5622
Descripción (FAN5622 - FAN5626) 2-channel Linear LED Driver
Fabricantes Fairchild Semiconductor 
Logotipo Fairchild Semiconductor Logotipo



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DataSheet.in
May 2010
FAN5622 / FAN5624 / FAN5626
Linear LED Drivers with Single-Wire Digital Interface
Features
ƒ Family of Three Linear Current-Sink LED Drivers that
Support 2, 4, or 6 LED Outputs
ƒ Current Sink Driver for Each LED Output:
30mA Maximum Output Current
50mV Drop-out at 15mA IOUT
Better than 3% Matching between Channels
External RSET
ƒ Single-Wire Digital Control Interface for Easy
Programming
32 Linear Steps of Dimming Control
ƒ Less than 1µA Shut-Down Current
ƒ Short-Circuit, Under-Voltage, and Thermal Protection
ƒ Wide Input Voltage Range: 2.7 to 5.5V
ƒ Small Form-Factor Packages:
FAN5622: 6-pin Super SOT23
FAN5624: 10-lead 1.4x1.8x0.55mm UMLP
FAN5626: 10-lead 1.6x2.1x0.55mm MicroPak™ MLP
Applications
ƒ Mobile Handsets
ƒ Mobile Internet Devices
ƒ PMP and MP3 Players
ƒ LCD Modules
Description
The FAN5622, FAN5624, and FAN5626 are two-, four-, and
six- channel current-sink linear LED drivers used to backlight
the main LCD displays or keypads in mobile electronics, such
as cellular phone handsets.
A very low dropout of 50mV allows driving LEDs without any
inductors or switch capacitors. The brightness levels of the
LED outputs are programmed through single-wire digital
control interface. The user can program 32 linear dimming
steps and turn on and off the LEDs through this interface by
applying digital pulses.
The FAN562x family of linear LED drivers provides high
efficiency due to the low drop-out voltage of the LED driver.
Good matching between different channels of LED output is
provided across the entire 32 dimming steps. These LED
drivers also integrate short circuit, under-voltage, and thermal
protection to ensure for a more robust solution.
The FAN5622, FAN5624, and FAN5626 are available in very
small form-factor packages: 6-pin Super SOT23, 10-lead
UMLP, and 10-lead MicroPak™ MLP, respectively.
Figure 1. Typical Application of FAN5622
Ordering Information
Part Number
FAN5622SX
FAN5624UMPX
FAN5626LX
# of Channels
2
4
6
Temperature
Range
-40 to 85°C
-40 to 85°C
-40 to 85°C
Package
6-Lead SSOT23
10-Lead UMLP
10-Lead MicroPak™ MLP
Packing
Tape and Reel
Tape and Reel
Tape and Reel
© 2010 Fairchild Semiconductor Corporation
FAN5622 / FAN5624 / FAN5626 • Rev. 1.0.1
www.fairchildsemi.com

1 page




FAN5622 pdf
DataSheet.in
Electrical Specifications
VIN = 2.7V to 5.5V, RSET = 19.10k, TA = -40°C to +85°C, Vf = 2.5V to [3.5V or VIN – 0.1V], whichever is smaller. Typical values
are at TA = 25°C, VIN = 3.6V, and Vf= 3.2V.
Symbol
Parameter
Conditions
Min. Typ. Max. Units
Power Supplies
ISD Shutdown Supply Current
IIN Operating Supply Current
IIH
VUVLO
Regulation
Control Pin Input Current
Under-Voltage Lockout
Threshold
VIN = 3.6V, CTRL = 0
FAN5622: VIN = 3.6V, ILED = 0mA
FAN5624: VIN = 3.6V, ILED = 0mA
FAN5626: VIN = 3.6V, ILED = 0mA
CTRL = 1.8V
VIN Rising
VIN Falling
2.10
0.3
0.4
0.6
0.8
1
2.50
2.30
1.0
0.8
1.0
1.2
250
2.70
2.50
µA
mA
mA
mA
nA
V
V
IFS_LEDx (MAX) Full-Scale LED Output Current ILEDx = 30mA; x = 1 to 6
5
30
VIN=2.85V – 4.5V; VCATH =0.15 to
ILED
Absolute Current Accuracy
(1.2V or VIN=2.55V, Whichever is
Smaller); Full-Scale Current 5-
-10
30mA, TA = 25°C
+10
ILED MATCH LED Current Matching(4)
ILEDx = 15mA; V_LEDx=0.4V,
TA = 25°C
-3
+3
VISET
ISET Drive Voltage
9.53kΩ ≤ RSET 56.2k
1.20
IRATIO
Current Mirror Ratio from ISET
Pin
9.53kΩ ≤ RSET 56.2k
240
mA
%
%
V
IOUT_LOAD IOUT Load Regulation
IOUT_LINE IOUT Line Regulation
VDROPOUT Dropout Voltage
VIN = 3.6V, ILEDx = 15mA,
LED VF = 2.7 to 3.5V,
VIN = 2.7 to 4.8V, ILEDx = 15mA,
VCATH = 0.5V
VIN=3.6V; ILED = 15mA, -10% ILED
Drop
VIN=3.6V; ILED = 30mA, -10% ILED
Drop
-3
-4
+3
+4
50
60
%
%
mV
TSD Thermal Shutdown
Rising Temperature at Junction
Hysteresis
150
20
°C
Logic Input (CTRL)
VIH HIGH-Level Input Voltage
1.2 V
VIL LOW-Level Input Voltage
0.4 V
TLO CTRL LOW Time for Dimming VIN = 3.6V; See Figure 17
0.5
300 µs
THI Time Delay between Steps VIN = 3.6V; See Figure 17
0.5
µs
TON CTRL HIGH to Turn-On Delay VIN = 3.6V; See Figure 17
250 µs
TSD
CTRL LOW, Shutdown Pulse
Width
VIN = 3.6V; from Falling Edge of
CTRL
1
ms
Note:
4. For the two, four, and six LED current sinks of FAN5622, FAN5624, and FAN5626 respectively; the following are
determined: the maximum sink current of the two, four, and six LED outputs (MAX); the minimum sink current of the two,
four, and six outputs (MIN); and the average sink current (AVG). For all of the LED outputs, two matching numbers are
calculated: (MAX-AVG)/ AVG and (AVG-MIN)/AVG. The largest number of the two (worst case) is considered the
matching figure for the part. The matching figure for a given part is considered to be the highest matching figure of all LED
outputs. The typical specification provided is the most likely norm of the matching figure for all parts.
© 2010 Fairchild Semiconductor Corporation
FAN5622 / FAN5624 / FAN5626 • Rev. 1.0.1
5
www.fairchildsemi.com

5 Page





FAN5622 arduino
DataSheet.in
Physical Dimensions (Continued)
Figure 19. FAN5624: 10-Lead UMLP
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’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/.
© 2010 Fairchild Semiconductor Corporation
FAN5622 / FAN5624 / FAN5626 • Rev. 1.0.1
11
www.fairchildsemi.com

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