y
XC9116 Series
ETR0407-005
Step-Up DC/DC Converter-Backlight LED Driver
■GENERAL DESCRIPTIO N
The XC9116 series is a fixed frequency, constant current step-up DC/DC converter ideal for driving LEDs used in backlighting
applications such as cellular phones, PDAs and digital cameras. Output voltage of up to 17.5V can be derived, therefore four
white LEDs in series can be driven. Since an LED current can be set by an external resistor when LEDs are in-series
connection, all white LEDs can be turned on equably. A network of two parallel legs with three in each LED can be also
driven. Luminance of the LEDs is controlled by changing the duty cycle of a PW M signal applied to the CE pin. Efficiency is
high with the low feedback reference voltage ensuring the R
RDSON of 2.0 Ω is used. A low profile and small board area solution can be achieved using a chip coil and an ultra small
ceramic output capacitor (CL) of 0.22⎧F as a result of the high 1.0MHz switching frequency.
The 'B' type of XC9116 has an additional fault detection circuit. If the LEDs are disconnected or damaged, excess or run a way
output voltage is prevented by stopping the drive of the internal MOSFET.
■APPLICATIONS
●For White LED drivers
●Mobile phones, PHS
●PDAs
●Digital still cameras
■TYPICAL APPLICATION CIRCUIT
LED losses are minimal. In addition, an internal MOSFET with an
■FEATURES
Input Voltage Range : 2.5V ~ 6.0V
Output Voltage Range : Up to 17.5V externally set-up
: Reference voltage 0.2V +
Oscillation Frequency : 1.0MHz, ±20%
ON Resistance : 2.0Ω
Efficiency : 86% (XC9116B Type)
: 84% (XC9116D Type)
(V
Control : PWM control
Standby current : ISTB=1.0μA (MAX .)
Load Capacitor : 0.22μF, ceramic
Lx Limit Current : 325mA
Lx Overvoltage Limit : XC9116B series
No Lx Overvoltage Limit : XC9116D series
Package : SOT-25, USP-6B
Environmentall
Friendly : EU RoHS Compliant, Pb Free
IN=3.6V, ILED=20mA when
driving 3 white LEDs in series)
■TYPICAL PERFORMANCE
CHARACTERISTICS
●XC9116B Type
5%
1/22
r
XC9116 Series
■PIN CONFIGURATION
SOT-25 (TOP VIEW)
■PIN ASSIGNMENT
PIN NUMBER
SOT-25 USP-6B
1 2 Lx Switch
2 3 VSS Ground
3 1 FB Voltage Feedback
4 6 CE Chip Enable
5 4 VIN Power Input
- 5 NC No Connection
■CE PIN FUNCTION
CE PIN OPERATIONAL STATE
H Operation
L Shut-down
■PRODUCT CLASSIFICATION
●Ordering Information
XC9116①②③④⑤⑥-⑦
(*1)
DESIGNATOR DESCRIPTION SYMBOL DESCRIPTION
① Lx Overvoltage Limit
②③ FB Voltage 02 0.2V
④ Oscillation Frequency A 1MHz
⑤⑥-⑦
(*1)
The “-G” suffix indicates that the products are Halogen and Antimony free as well as being fully RoHS compliant.
(*2)
The device orientation is fixed in its embossed tape pocket. For reverse orientation, please contact your local Torex sales office o
representative. (Standard orientation: ⑤R-⑦, Reverse orientation: ⑤L-⑦)
Packages
Taping Type
6
5
4
1
2
3
USP-6B (BOTTOM VIEW)
PIN NAME FUNCTION
B Available
D Not available
MR SOT-25
(*2)
DR-G USP-6B
DR USP-6B
*The dissipation pad of the USP-6B package
should be left open. If the circuit needs to
be connected to other pin, it should be
connected to the V
SS pin.
2/22
A
■BLOCK DIAGRAMS
●XC9116B02A
●XC9116D02A
■
VIN
FB
CE
VIN
FB
CE
Error Amp
-
+
0.2V
Compensation
Error Amp
-
+
Compensation
0.2V
Phase
CE
Phase
CE
Current
Feedback
Ramp Wave
Generator, OSC
Current
Feedback
Ramp Wave
Generator, OSC
BSOLUTE MAXIMUM RATINGS
+
PWM Comparater
+
PWM Comparater
PARAMETER SYMBOL RATINGS UNITS
VIN Pin Voltage VIN VSS – 0.3 ~ 7.0 V
Lx Pin Voltage VLx VSS – 0.3 ~ 22.0 V
FB Pin Voltage VOUT VSS – 0.3 ~ 7.0 V
CE Pin Voltage VCE VSS – 0.3 ~ 7.0 V
Lx Pin Current ILx 1000 mA
Power Dissipation
SOT-25 250
USP-6B
Pd
Operating Temperature Range Topr - 40 ~ + 85
Storage Temperature Range Tstg - 55 ~ +125
MAX Duty
Limit
120
Current
Sense & Limit
Lx Over Voltage
Limit
Buffer Driver
Current
Sense & Limit
Buffer Driver
Ta = 25OC
mW
O
C
O
C
XC9116
Series
Lx
VSS
LX
VS S
3/22
,
{[(
)]}
XC9116 Series
■ELECTRICAL CHARACTERISTICS
XC9116B02AMR
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT. CIRCUIT
FB Control Voltage VFB FB 0.19 0.20 0.21 V 1
Output Voltage Range VOUTSET VIN - 17.5 V 1
Input Voltage Range VIN 2.5 - 6.0 V 1
Supply Current 1 IDD1 - 450 750 μA 2
Supply Current 2 IDD2 VIN=Lx, VFB=0.4V - 60 140 μA 3
Standby Current I
Oscillation Frequency f
V
STB
0.8 1.0 1.2 MHz 2
OSC
=0V, VLX=5.0V - 0 1.0 μA 3
CE
Maximum Duty Cycle (*1) MAXDTY 86 92 98 % 2
Efficiency (*2) EFFI
Current Limit ILIM
Lx Overvoltage Limit VLxOVL
When connected to ext.
components, V
IN=3.6V, RLED=20 Ω
When connected to ext. components,
IN=3.6V
V
Voltage which Lx pin voltage holding
“H” level V
IN > 2.5V
- 86 - % 1
225 325 425 mA 4
18.0 19.0 22.0 V 2
Lx ON Resistance RSWON VIN=3.6V, VLx=0.4V - 2.0 - Ω 2
Lx Leakage Current ILxL Same as I
CE “High” Voltage VCEH
CE “Low” Voltage VCEL
CE applied voltage when Lx starts
oscillation
CE applied voltage which Lx pin
voltage holding “H” level
- 0 1.0 μA 3
STB
0.65 - - V 2
- - 0.2 V 2
CE “High” Current ICEH Same as IDD2 -0.1 - 0.1 μA 3
CE “Low” Current ICEL Same as I
-0.1 - 0.1 μA 3
STB
FB “High” Current IFBH Same as IDD2 -0.1 - 0.1 μA 3
FB “Low” Current IFBL Same as I
Unless otherwise stated, VIN=3.0V, VCE=3.0V, VFB=0V, Vpull=5.0V
NOTE: *1: The duty ratio is forcibly reduced when maximum duty cycle periods are repeated.
*2 : LED : NSPW310BS x 3
XC9116D02AMR
EFFI =
output voltage) x (output current)] / [(input voltage) x (input current
-0.1 - 0.1 μA 3
STB
x 100
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT CIRCUIT
FB Control Voltage VFB FB 0.19 0.20 0.21 V 1
Output Voltage Range VOUTSET VIN - 19.5 V 1
Lx Operating
Voltage Range
V
Lx - - 20.0 V 1
Operating Voltage Range VIN 2.5 - 6.0 V 1
Supply Current 1 IDD1 - 450 750 μA 2
Supply Current 2 IDD2 VIN=Lx, VFB=0.4V - 50 120 μA 3
Standby Current I
Oscillation Frequency f
VCE=0V, VLx=5V - 0 1.0 μA 3
STB
0.8 1.0 1.2 MHz 2
OSC
Maximum Duty Cycle MAXDTY 86 92 98 % 2
Efficiency (*1) EFFI
Current Limit ILIM
When connected to ext.
components, V
IN=3.6V, RLED=20 Ω
When connected to ext. components,
IN=3.6V
V
- 84 - % 1
225 325 425 mA 4
Lx ON Resistance RSWON VIN=3.6V, VLx=0.4V, Rpull=10 Ω - 2.0 3.6 Ω 2
Lx Leakage Current ILxL Same as I
CE “High” Voltage VCEH
CE “Low” Voltage VCEL
CE applied voltage when Lx starts
oscillation
CE applied voltage which Lx pin
voltage holding “H” level
- 0 1.0 μA 3
STB
0.65 - - V 2
- - 0.2 V 2
CE “High” Current ICEH Same as IDD2 -0.1 - 0.1 μA 3
CE “Low” Current ICEL Same as I
-0.1 - 0.1 μA 3
STB
FB “High” Current IFBH Same as IDD2 -0.1 - 0.1 μA 3
FB “Low” Current IFBL Same as I
Test conditions: Unless otherwise stated, VIN=3.0V, VCE=3.0V, VFB=0V, Vpull=5.0V, Rpull=100 Ω
Notes: *1: LED: NSPW310BS x 3, EFFI = {[(output voltage) x (output current)] / [(input voltage) x (input current)]} x 100
-0.1 - 0.1 μA 3
STB
Ta = 25OC
Ta = 25OC
4/22
XC9116
■TYPICAL APPLICATION CIRCUITS
●XC9116B02A ●XC9116D02A
■EXTERNAL COMPONENTS
SYMBOL VALUE PART NUMBER MANUFACTURER
L 22μH VLF3010A-220MR TDK
(*1)
SBD
-
CIN 4.7μF JMK107BJ475MA-B TAIYO YUDEN
(*3)
CL
0.22μF TMK107BJ224KA-B TAIYO YUDEN
(*4)
ZD
18V MAZ8180 PANASONIC
R1 100 Ω - -
NOTE :
*1: Please use a Schottky barrier diode (SBD) with a low junction capacitance, Cj.
*2: For using the XBS053V15R-G with four white LEDs in series, please be noted with a direct reverse voltage (V
■OPERATIONAL EXPLANATION
repetitive peak reverse voltage (V
*3: Use ceramic capacitors processing a low temperature coefficient.
*4: Please refer to the LED Open-circuit Protection at Application Information for setting the Zener diode.
RM=30V).
The series consists of a reference voltage source, ramp wave circuit, error amplifier, PWM comparator, phase
compensation circuit, Lx overvoltage limit circuit, N-channel MOS driver transistor, current limiter circuit and others. The
series ICs compare, using the error amplifier, the voltage of the internal voltage reference source with the feedback
voltage from the FB pin. Phase compensation is performed on the resulting error amplifier output, to input a signal to the
PWM comparator to determine the turn-on time during switching. The PWM comparator compares, in terms of voltage
level, the signal from the error amplifier with the ramp wave from the ramp wave circuit, and deliv ers the resulting outp ut
to the N-channel MOS driver transistor to cause the Lx pin to output a switching duty cycle. This process is continuously
performed to ensure stable output voltage. The current feed back circuit detects the N-channel MOS driver transistor's
current for each switching operation, and modulates the error amplifier output signal. T his enables a stable feedback
loop even when a low ESR capacitor, such as a ceramic capacitor, is used, ensuring stable output voltage.
<Reference Voltage Source>
The reference voltage source provides the reference voltage to ensure stable output voltage of the IC.
<Ramp Wave Circuit>
The ramp wave circuit determines switching frequency. The 1MHz (TYP.) of frequency is fixed internally.
Clock pulses generated in this circuit are used to produce ramp waveforms needed for PW M operation.
<Error Amplifier>
The error amplifier is designed to monitor output voltage. The amplifier compares the reference voltage with the FB pin
voltage. When a voltage lower than the reference voltage is fed back, the output voltage of the error amplifier is
increased. Gain and frequency characteristics of the error amplifier outp ut are fixed internally as an optimize signal.
XBS053V15R-G (*2) TOREX
MA2Z720 PANASONIC
R=20V) and a
Series
5/22
XC9116 Series
■OPERATIONAL EXPLANATIONS (Continued)
<Current Limit>
The current limit circuit of the XC9116 series monitors the current flowing through the N-channel MOS driver transistor
connected to the Lx pin, and features a combination of the constant-current type current limit mo de and the duty cycle
limit of the next pulse.
1When the driver current is greater than a specific level, the constant-current type current limit function operates to
■NOTES ON USE
turn off the pulses from the Lx pin at any given timing.
2The IC controls the next pulse to be smaller than the first pulse.
Current Limit
I
L
L
X
①
The c ur re nt w ill be of f w he n t he c o il c ur r ent
reaches the value of the c onstant cur rent limit.
Current Limit
②
Limit some duty pulses after the
limit.
<Lx Overvoltage Limit Circuit>
XC9116B series' Lx overvoltage limit circuit monitors the Lx pin voltage. When the Lx pin voltage exceeds than 19V
(TYP.), the IC performs the function of latching the OFF state of the driver transistor, and goes into operation suspension
mode. In suspension mode, operations can be resumed by restoring power to the V
IN pin. The suspension mode
does not mean a complete shutdown, but a state in which pulse output is suspended; therefore, the internal circuitry
remains in operation.
<Maximum Duty Cycle Limit>
The XC9116B series' maximum duty cycle limit circuit monitors the duty cycle. When the maximum duty cycle is
repeated for a certain time, the IC controls the error amplifier output so that the duty cycle of the ne xt pulse becomes
smaller than that of the first pulse.
<CE Pin Function>
The operation of the XC9116 series will enter into the shut down mode when a low level signal is input to the CE pin.
During the shut down mode, the supply current is 0μA (TYP.), with high impedance at the Lx pin. The IC starts its
operation with a high level signal to the CE pin. The input to the CE/MODE pin is a CMOS input and the sink current is
0μA (TYP.). 100μs after disable, the IC goes into suspe nsion mode an d supply curr ent is minimal. After this, the IC
will be in stand-by mode and the supply current will be 0μA (TYP.).
<Lx (Pin 1): Switch Pin>
Please connect the anode of a Schottky barrier diode and an inductor to the Lx pin.
<FB (Pin 3): Voltage Feedback Pin>
The reference voltage is 200mV (TYP.). A resistor (R
LEDs and a constant current value. The resistance value can be calculated by the fol lowing equation.
R
LED=0.2 / ILED
I
LED=Setting constant current value
LED) should be connected to the FB pin for setting the cathode of
Typical example:
ILED RLED ILED RLED
5mA 40 Ω 13.3mA 15 Ω
10mA 20 Ω 20mA 10 Ω
<CE (Pin 4): Chip Enable Pin>
An ENABLED state is reached when the CE voltage exceeds 0.65V and a DISABLED state when the CE Voltage falls
below 0.2V.
IN (Pin 5): Power Supply Pin>
<V
Please connect an inductor and an input by-pass capacitor (C
IN) to the VIN pin.
6/22
A
■
PPLICATION INFORMATION
<Dimming Control>
1. Applying PWM signal to the CE pin
The XC9116 repeats on/of f operations by a PWM signal applied to the CE pin. The magnitude of LED current, ILED, when
the diode is on, is determined by R
proportional to the positive duty ratio of the PWM signal.
The frequency of the PWM signal can be controlled to the optimum value between 100Hz and 10kHz. With regard to the
amplitude of the PWM signal, the high level should be higher than the "H" voltage of CE, V
than the "L" voltage of CE, V
20μs / div
2. Step-Wise Regulation of LED Current
In some applications, it may be necessary to incorporate step-wise regulation of LED current, I
of LED illumination is achieved by connecting a switch element SW1 in parallel with R
turning SW1 on and off, as shown below. Choose a r esistance of R
when switch element SW1 is off. The resistance of R
through the LED is gained when the switch element is on.
Ex.) Current ILED = 5mA and 15mA
R
R
LED = 200mV / 5mA = 40
LED1 = 200mV / (15mA – 5mA) = 20
LED. The magnitude is zero when the diode is off. The average of LED current is
CEH, and the low level, lower
CEL.
20μs / div
4 series
200μs / div 200μs / div
LED. Step-wise regulation
LED and in series with RLED1 and
LED so that the minimum necessary current is gained
LED1 should be such that a desired increase of current passed
Ω
L
VIN
Ω
CIN
ON/OFF
VIN Lx
CE FB
VSS
SD
ILED
RLED
RLED1
signal
CL
SW1
XC9116
Series
Figure : Circuit using Step-wise Regulation of LED Current
7/22
A
XC9116 Series
■
PPLICATION INFORMATION (Continued)
<Dimming Control (Continued)>
3. Using DC Voltage
If in an application it is necessary to control the LED curr ent by a variable DC voltage, illumination control of LED is
achieved by connecting R1 and R2 and applying a direct-current voltage to R2, as shown below.
When R1>>R
LED = (VREF - R1 / R2 (VDC - VREF)) / RLED
I
REF = 0.2V (TYP.)
V
Ex.1) When R1 = 10k
In the range of 0.2V to 2.2V DC, I
(LED current) varies between 20mA to 0mA.
Ex.2) When R1 = 10k Ω, R2 = 100k Ω, R3 = 10k Ω,
C1 = 0.1μF, RLED = 10Ω, the average LED current will
<Prevent Emission Caused by White LEDs Leakage>
When the input voltage (V
happens, please connect a transistor to between the LED and the FB pin. B y driving the CE sign al in-phase and cutting
the pass to current, the minimum illumination can be prevented.
LED, ILED which flows into LEDs can be calculated by the following equation;
Ω, R2 = 100k Ω, RLED = 10 Ω,
LED
VDC
be 10mA by inputting a PWM signal of CE ‘H’ level:
2.2V, CE ’L’ level: 0V, duty cycle: 50%, oscillation
frequency: 100Hz. As well as the way of dimming
control by applying the PWM signal to the CE pin, the
average LED current increases proportionally with the
PWM
positive duty cycle of the PWM signal.
Figure : Circuit inputting a PWM signal to the FB pin
IN) is high, minimum illumination may occur even if the CE pin is in the disable state. If this
ILED
ZD
XC9116
( )
FB
R2 R1
Figure : Circuit using DC voltage
ILED
ZD
XC9116
( )
FB
R3
R2
R1
C1
RLED
RLED
8/22
A
■
PPLICATION INFORMATION (Continued)
<Illumination of Six in Total White LEDs>
It is possible to illuminate three-series two parallel white LEDs, six in total, using an input voltage V
<Use as Flash>
An LED current 65mA (MAX.) can be supplied to two white LEDs.
L
VIN
VIN Lx
CIN
ON/OFF
<Separate Supply Source of the Step-up Circuit (V
CE FB
VSS
IN) from VIN Pin>
Supply source of the step-up circuit can be used separately from V
Circuit example of separating supply source of
the step-up circuit from V
IN pin ( 3 LEDs)
Note: Please input 2.5V~6V to the VIN pin when you use.
SD
ILED
RLED
CL
RLED1
signal
IN pin.
SW1
Circuit example of separating supply source of
the step-up circuit from VIN pin ( 2 LEDs)
XC9116
Series
IN≧3.2V.
9/22
XC9116 Series
■APPLICATION INFORMATION (Continued)
<LED Open-circuit Protection>
If white LEDs are opened or damaged, the FB pin is pulled down, so that the o perating dut y ratio reaches the maximum .
Accordingly, the output voltage continues to increase, possibly causing the Lx pin voltage to exceed the absolute
maximum rating of 22V.
In the case of the B type products, if white LEDs are opened or damaged, the detector built in the Lx pin causes the IC to
stop oscillating, preventing excessive increase of the output voltage. However, the detector may detect an overvoltage if
the Lx pin voltage exceeds 18V, which is the overvoltage limit, even when no LEDs are open. Therefore, care must be
taken if four LEDs each having a forward voltage of 4.45V or more are connected in series.
In the case of the D type products (no overvoltage limit circuit), a Zener diode (ZD) and a resistor (R1) can be externa lly
connected to serve as a load in the case that LEDs are opened, preventing the incre ase of the Lx pin voltage. The ZD
voltage should be set to no more than 20V and no less than the product of each white LED’s maximum forward voltage
multiplied by the number of the connected LEDs, so that the Zener diode will not load the LEDs during normal operation.
If the Zener diode becomes load, the current that runs through the white LEDs is reduced, decreasing illumination.
Note : The XC9116B02A series requires nei ther the Zener diode (ZD) nor the resisto r 1 (R1).
<Startup Inrush Current>
The XC9116 series has no soft-start circuit built-in in order to minimize delay at startup. The inrush current can reach up
to the current limit, I
In some cases, overshoot can occur.
VIN
2.5V~6.0V
CIN
4.7uF
LIM.
L:22uF
VLF3010A
VIN Lx
CE FB
VSS
SD
XBS053V15R
MAZ8180
R1
100ohm
RLED
10ohm
CL
0.22uF
20mA
10/22
A
■
PPLICATION INFORMATION (Continued)
<Instruction on Pattern Layout>
1. In order to stabilize V
possible to the V
2. Please mount each external component as close to the IC as possible.
3. Wire external components as close to the IC as possible and use thick, short connecting traces to reduce the circuit
impedance.
4. Make sure that the PCB GND traces are as thick as possible, as variations in ground potential caused by high ground
currents at the time of switching may result in instability of the IC.
●XC9116B Series Pattern Layout (SOT-25)
●XC9116D Series Pattern Layout (SOT-25)
IN's voltage level, we recommend that an input by-pass capacitor (CIN) be connected as close as
IN & VSS pins.
LED
RLED
CE
VOUT
GND
CL
4
5
132
VIN
SBD
L
LED
RLED
D
Z
CE
GND
4
5
1
R
CL
132
VOUT
VIN
SBD
L
XC9116
Series
11/22
XC9116 Series
■ TEST CIRCUITS
●Circuit ① XC9116B02A series
●Circuit ②
OSC
V
A
IN
V
IN
1uF
CE FB
V
CE
V
SS
Lx
Rpull
220uF
Vpull
V
FB
●Circuit ④
V
IN
1uF
V
CE FB
VCE
OSC
10ohm 300ohm
IN
Lx
SS
V
2SK583
1uF
11kohm
1.1kohm
0.01uF
1. The measurement method of LX ON Resistance R
Using the circuit ②, Lx ON resistance can be measured by adjusting Vpull voltage to set Lx voltage VLx 0.4V when the
driver transistor is ON.
The oscilloscope is used for measuring the Lx voltage when the driver transistor is ON.
R
SWON = 0.4 / ((Vpull - 0.4) /10)
2. The measurement method of current limit ILIM
Using the circuit ④, current limit I
LIM can be calculated by the equation including Vpull voltage when FB voltage is
decreased while Vpull voltage is adjusted and Lx voltage V
The oscilloscope is used for measuring the Lx voltage when the driver transistor is ON.
ILIM = (Vpull - VLx) / Rpull
SWON
12/22
●Circuit ① XC9116D02A series
VIN
CIN
4.7uF
(ceramic)
L:22uF
VLF3010A
VIN Lx
CE FB
VSS
SD
XBS053V15R
OSC
●Circuit ③
V
A
V
IN
1uF
4.4V
Vpull
220uF
V
Lx when the driver transistor is ON.
IN
CE FB
A A A
V
V
CE
SS
MAZ8180
R1
100ohm
RLED
10ohm
Lx
V
CL
0.22uF
(ceramic)
V
V
FB
Lx
p
p
)
XC9116
Series
■ TYPICAL PERFORMANCE CHARACTERISTICS
(1) Supply Current 1 vs. Input Voltage (2) Supply Current 2 vs. Input Voltage
1200
1000
800
600
85oC
400
200
Supply Current 1 IDD1 (uA)
0
23456
Input Voltage VIN (V)
VCE=3.0V,VFB=0V
ull=5V,Rpull=100ohm
V
Ta=25oC
-40oC
140
120
100
80
60
40
20
Supply Current2 IDD2 (uA)
-40oC
0
23456
VIN=Lx,VCE=3.0V,VFB=0.4V
Ta=25oC
85oC
Input Voltage VIN (V)
(3) Oscillation Frequency vs. Input Voltage (4) Maximum Duty Cycle vs. Input Voltage
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
23456
Oscillat ion Fr equency Fosc (MHz)
Input Voltage VIN (V)
VCE=3.0V,VFB=0V
Vpull=5V,Rpull=100ohm
85oC
Ta= 25oC
-40oC
VCE=3.0V,VFB=0V
V
98
96
94
-40oC
92
90
Ta=25oC
88
Maxmum Duty Cycle MAXDTY(%)
86
23456
Input Voltage VIN (V)
ull=5V,Rpull=100ohm
85oC
(5) Stand-by Current vs. Input Voltage (6) Maximum LED Current vs. Input Voltage
(uA)
STB
Standby Current I
1.0
0.8
0.6
0.4
85oC
0.2
0.0
23456
Input Voltage VIN (V)
VCE=0V,VFB=0V,VLx=5V
Ta=25oC,-40oC
250
200
150
100
50
Max LED C urrent ILED_M AX (m A
0
o
C
Ta=25
VOUT=7V
23456
Input Voltage VIN(V)
VCE=3.0V,LED:NSPW310BS
L=22uH(VLF3010),CIN=4.7uF(Ceramic)
CL=0.22uF(Ceramic), SBD:XBS053V15R
10V
16V
13V
13/22
p
p
)
XC9116 Series
■ TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(7) Lx On Resistance vs. Input Voltage (8) Current Limit vs. Input Voltage
)
6.0
Ω
(ohm)
5.0
VCE=3.0V,VLx=0.4V,R
ull=10ohm,Tr:2SK583
4.0
SWON
-40oC
Ta=25oC
3.0
2.0
1.0
85oC
0.0
Lx ON Resistance Rswon (
Lx ON Resistance R
23456
Input Voltage VIN (V)
(9) FB Voltage vs. Ambient Temperature (10) Lx Overvoltage Limit vs. Input Voltage
0.210
VCE=3.0V,LED:NSPW310BS
L=22uH(VLF3010),CIN=4.7uF(Ceramic)
CL=0.22uF( Ceramic), XBS053V15R
0.205
0.200
0.195
Feed Back Voltage VFB(V)
0.190
-50 -25 0 25 50 75 100
o
Ambient Temp Ta(
C)
(11) CE ’H’ Voltage vs. Input Voltage (12) CE ’L’ Voltage vs. Input Voltage
CE 'H' Voltage VCEH(V)
0.65
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
0.20
23456
VFB=0V,Vpull=5V,Rpull=100ohm
-40oC
85oC
Ta=25oC
Input Voltage VIN (V)
14/22
700
600
(mA)
500
LIM
I
400
300
200
100
Current Limit
0
22
21
20
19
Lx Over Voltage Limit VLxOVL(V
18
Lx Ov er Voltage Limit VLxOVL (V)
0.65
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
CE 'L' Voltage VCEL(V)
0.20
VCE=3.0V,VLx=0.4V,R
-40oC
Ta=25oC
ull=10ohm,Tr:2SK583
85oC
23456
Input Voltage VIN (V)
VCE=3.0V,VFB=0V,Rpull=300ohm
Ta=25oC
-40oC,85oC
23456
Input Voltage VIN(V)
VFB=0V,Vpull=5V,Rpull=100ohm
-40oC
85oC
Ta=25oC
23456
Input Voltage VIN (V)
)
V
)
V
)
V
)
V
)
V
)
V
XC9116
Series
■ TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(13) Efficiency vs. Input Voltage
XC9116B02AMR, 3 LEDs in series
100
90
80
70
Efficiency EF FI (%
60
50
23456
LED:NSPW310BS,CIN =4.7uF(Cer amic)
CL=0.22uF(Ceramic), SBD:XBS053V15R
30mA
ILED=10mA
Input Voltage VIN (V)
100
90
LED:NSPW310BS,CIN =4.7uF(Cer amic)
CL=0.22uF(Ceramic), SBD:XBS053V15R
30mA
80
ILED=10mA
70
Efficiency EFFI(%
60
50
23456
Input Voltage VIN (V)
100
90
LED:NSPW310BS,CIN=4.7uF(Cer amic)
CL=0.22uF(Ceramic), SBD:XBS053V15R
80
70
Efficiency EFFI(%
60
ILED=10mA
50
23456
Input Voltage VIN (V)
VCE=3.0
20mA
Ta=25oC
VCE=3.0
20mA
Ta=25oC
VCE=3.0
30mA
20mA
Ta=25oC
LED:NSPW310BS,CIN=4.7uF(Ceramic)
100
CL=0.22uF(Ceramic), SBD:XBS053V15R
30mA
90
80
70
Efficiency EFFI(%
60
ILED=10mA
20mA
Ta=25oC
50
23456
Input Voltage VIN (V)
LED:NSPW310BS,CIN=4.7uF(Ceramic)
100
CL=0.22uF(Ceramic), SBD:XBS053V15R
30mA
90
80
70
ILED=10mA
Efficiency EFFI(%
60
Ta=25oC
50
23456
Input Voltage VIN(V)
VCE=3.0
100
LED:NSPW310BS,CIN=4.7uF(Cer amic)
CL=0.22uF(Ceramic), SBD:XBS053V15R
90
80
20mA
30mA
70
60
Efficiency EFFI(%
ILED=10mA
Ta=25oC
50
23456
Input Voltage VIN(V)
VCE=3.0
VCE=3.0
20mA
15/22
)
V
)
V
)
V
)
V
)
V
)
V
XC9116 Series
■ TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(13) Efficiency vs. Input Voltage (Continued)
XC9116B02AMR, 4 LEDs in series
100
90
LED:NSPW310BS,CIN=4.7uF(Ceramic)
CL=0 . 22 uF(Ce ra mic), SBD:XBS0 53 V 15 R
20mA
80
70
Efficiency EF FI (%
60
30mA
50
23456
Input Voltage VIN (V)
100
90
LED:NSPW310BS,CIN=4.7uF(Ceramic)
CL=0 . 22 uF(Ce ra mic), SBD:XBS0 53 V 15 R
80
ILED=10mA
70
Efficiency EFFI(%
60
50
23456
Input Voltage VIN(V)
100
90
LED:NSPW310BS,CIN=4.7uF(Ceramic)
CL=0 . 22 uF(Ce ra mic), SBD:XBS0 53 V 15 R
30mA
80
70
Efficiency EF FI(%
60
ILED=10mA
50
23456
Input Voltage VIN(V)
16/22
30mA
VCE=3.0
ILED=10mA
Ta=25oC
VCE=3.0
20mA
Ta=25oC
VCE=3.0
20mA
Ta=25oC
VCE=3.0
100
LED:NSPW310BS,CIN=4.7uF(Ceramic)
CL=0 . 22 uF(Ce ra mic), SBD:XBS0 53 V 15 R
30mA
90
80
70
Efficiency EFFI(%
60
ILED=10mA
20mA
Ta=25oC
50
23456
Inp ut Voltage VIN(V)
VCE=3.0
100
LED:NSPW310BS,CIN=4.7uF(Ceramic)
CL=0.22uF(Ceramic), SBD:XBS053V15R
30mA
90
80
ILED=10mA
20mA
70
Eff iciency EFF I(%
60
Ta=25oC
50
23456
Input Voltage VIN (V)
VCE=3.0
Ta=25oC
100
LED:NSPW310BS,CIN=4.7uF(Ceramic)
CL=0.22uF(Ceramic), SBD:XBS053V15R
90
80
20mA
30mA
70
Efficiency EFFI(%
60
ILED=10mA
50
23456
Inp ut Voltage VIN(V)
)
V
)
V
)
V
)
V
)
V
XC9116
Series
■ TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(13) Efficiency vs. Input Voltage (Continued)
XC9116B02AMR, 2 parallel legs with 3 LEDs per leg
100
90
80
70
Efficiency EFFI (%
60
50
23456
L=22μH (VLF3010)
LED:NSPW310BS,CIN=4.7uF(Ceramic)
CL=0.22uF(Cer amic), SBD:XBS053V15R
ILED=10mA
30mA
20mA
Input Voltage VIN (V)
VCE=3.0
Ta=25oC
(14) Efficiency vs. LED Current
XC9116B02AMR, 3 LEDs in series
100
L:CDRH3D16
90
80
70
60
50
40
30
Efficiency EF FI(%
20
10
0
0 5 10 15 20 25 30
VLF3010A
L=10μH
LED:NSPW310BS,CIN=4.7uF(Ceramic)
CL=0.22uF(Ceramic), SBD:XBS053V15R
VCE=3.0
CBC2518
VIN=3.6V
100
L:CDRH3D16
90
80
70
60
50
40
30
Efficiency EFFI(%
20
10
0
0 5 10 15 20 25 30
L=22μH
LED:NSPW310BS,CIN=4.7uF(Ceramic)
CL=0 . 22 uF(Ce ra mic), SBD:XBS0 53 V15R
VLF3010A
VCE=3.0
CBC2518
VIN=3.6V
LED Current ILED(mA)
LED Current ILED(mA)
XC9116B02AMR, 4 LEDs in series
100
L:CDRH3D16
90
80
70
60
50
40
30
Efficiency EFFI(%
20
10
0
0 5 10 15 20 25 30
L=10μH
LED:NSPW310BS,CIN=4.7uF(Ceramic)
CL=0.22uF(Ceramic), SBD:XBS053V15R
VLF3010A
VIN=3.6V
LED Current ILED(mA)
VCE=3.0
CBC2518
L=22μH
LED:NSPW310BS,CIN=4.7uF(Ceramic)
100
L:CDRH3D16
90
80
70
60
50
40
30
Efficiency EFFI(%
20
10
0
0 5 10 15 20 25 30
CL=0.22uF(Ceramic), SBD:XBS053V15R
VLF3010A
LE D Current ILED(mA)
VCE=3.0
CBC2518
VIN=3.6V
17/22
XC9116 Series
■ TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(15) Average LED Current vs. Input Voltage
25
20
15
10
5
Average LED C u rrent I LED _av e( m A)
0
2.53.03.54.04.55.0
L=22uH(VLF3010),CL=0.22uF(Ceramic)
R1=10ohm,SBD:XBS053V15R
100%
Dimmin g P WM Duty=50%
Ta= 85oC
25
-40
Input Voltage VIN (V)
25
20
15
10
o
C
o
C
5
Average LED C urrent I LED _ave (m A)
0
2.5 3.0 3.5 4.0 4.5 5.0
25
20
15
10
5
Average LED Current I LED _av e(m A)
0
2.53.03.54.04.55.0
L=22uH(VLF3010),CL=0.22uF(Ceramic)
R1=10ohm,SBD:XBS053V15R
Dimmin g P WM Duty=50%
Ta= 85oC
25
-40
Input Voltage VIN (V)
100%
25
20
15
10
o
C
o
C
5
Average LED C urrent I LED _ave(m A)
0
2.5 3.0 3.5 4.0 4.5 5.0
25
L=22uH(VLF3010),CL=0.22uF(Ceramic)
R1=10ohm,SBD:XBS053V15R
25
20
15
Dimmin g P WM Duty=50%
10
5
Average LED C urrent I LED _av e(m A)
0
Ta= 85oC
25
-40
2.5 3.0 3.5 4.0 4.5 5.0
Input Voltage VIN (V)
100%
o
C
o
C
20
15
10
5
Average LED C urrent I LED _av e(m A)
0
2.5 3.0 3.5 4.0 4.5 5.0
Note : Average LED Current denotes the average current which flows into LED when a PWM signal is input to the CE pin.
18/22
L=22uH(VLF3010),CL=0.22uF(Ceramic)
R1=10ohm,SBD:XBS053V15R
100%
Dimmin g P WM Duty=50%
Ta= 85oC
25
-40
Input Voltage VIN (V)
L=22uH(VLF3010),CL=0.22uF(Ceramic)
R1=10ohm,SBD :XBS053V15R
100%
Dimming PWM Duty=50%
Ta= 85oC
25
-40
Input Voltage VIN (V)
L=22uH(VLF3010),CL=0.22uF(Ceramic)
R1=10ohm,SBD:XBS053V15R
100%
Dimming PWM Duty=50%
Ta= 85oC
25
-40
Input Voltage VIN (V)
o
C
o
C
o
C
o
C
o
C
o
C
)
XC9116
Series
■ TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(16) Average LED Current vs. Dimming PWM Duty
20
2.7V
16
3.2V
4.2V
5.0V
12
8
4
Average LED C urrent ILED_ave(m A)
0
0 20406080100
20
2.7V
16
3.2V
4.2V
5.0V
12
8
4
Average LED Current ILED_ave(mA
0
020406080100
20
2.7V
16
3.2V
4.2V
5.0V
12
8
4
Average LED C urren t I L ED _av e(m A)
0
0 20 40 60 80 100
Note : Average LED Current denotes the average current which flows into LED when an PWM signal is input to the CE pin.
L=22uH(VLF3010),CL=0.22uF(Ceramic)
R1=10ohm,SBD:XBS053V15R
VIN=2.5V
Dimming PWM DUTY (%)
L=22uH(VLF3010),CL=0.22uF(Ceramic)
R1=10ohm,SBD:XBS053V15R
VIN=2.5V
Ta=25oC
Dimming PWM Duty (%)
L=22uH(VLF3010),CL=0.22uF(Ceramic)
R1=10ohm,SBD:XBS053V15R
VIN=2.5V
Dimming PWM Duty (%)
Ta=25oC
Ta=25oC
L=22uH (VLF3010) ,CL=0.22uF(Cer amic)
20
VIN=2.5V
2.7V
16
3.2V
4.2V
5.0V
12
R1=10ohm,SBD:XBS053V15R
8
4
Average LED C urrent ILED_ave(m A)
0
0 20406080100
Dimming PWM DUTY (%)
L=22uH(VLF3010),CL=0.22uF(Ceramic)
R1=10ohm,SBD:XBS053V15R
20
VIN=2.5V
2.7V
16
3.2V
4.2V
5.0V
12
8
4
Average LED C urrent ILED _av e(m A)
0
Ta=25oC
0 20406080100
Dimming PWM Duty (%)
L=22uH (VLF3010) ,CL=0.22uF(Cer amic)
R1=10ohm,SBD:XBS053V15R
20
VIN=2.5V
2.7V
16
3.2V
4.2V
5.0V
12
8
4
Ta=25oC
Average LED C urren t I L ED _av e(m A)
0
0 20406080100
Dimming PWM Duty (%)
19/22
XC9116 Series
■PA CKAGING INFORMATION
●SOT-25
●USP-6B
Reference Pattern Layout
Reference Metal Mask Design
20/22
■ MARKING RULE
●SOT-25
●USP-6B
SOT-25
(TOP VIEW)
USP-6B
(TOP VIEW)
1 represents product series
MARK PRODUCT SERIES
F
* Character inversion used.
2 represents Lx overvoltage limit
MARK Lx OVERVOLTAGE LIMIT PRODUCT SERIES
B Available XC9116B02AM x
D Not Available XC9116D02AM x
3 represents oscillation frequency
MARK OSCILLATION FREQUENCY PRODUCT SERIES
A 1MHz XC9116 x 02AM x
4 represents production lot number
0 to 9 and A to Z, or inverted characters 0 to 9 and A to Z repeated.
(G, I, J, O, Q, and W excluded)
1 represents product series
MARK PRODUCT SERIES
K XC9116 x 02AD x
2 represents Lx overvoltage limit
MARK Lx OVERVOLTAGE LIMIT PRODUCT SERIES
B Available XC9116B02AD x
D Not Available XC9116D02AD x
34 represents FB voltage
MARK
③ ④
FB VOLTAGE (V) PRODUCT SERIES
0 2 0.2 XC9116 x 02AD x
5 represents oscillation frequency
MARK OSCILLATION FREQUENCY PRODUCT SERIES
A 1MHz XC9116 x 02AD x
6 represents production lot number
0 to 9 and A to Z repeated (G, I, J, O, Q, and W exclude d)
* No character inversion used.
XC9116
Series
XC9116 x 02AM x
21/22
XC9116 Series
1. The products and product specifications contained he rein are subject to change without
notice to improve performance characteristics. Consult us, or our representatives
before use, to confirm that the information in this datasheet is up to date.
2. We assume no responsibility for any infringement of patents, patent rights, or other
rights arising from the use of any information and circuitry in this datasheet.
3. Please ensure suitable shipping controls (including fail-safe designs and aging
protection) are in force for equipment employing products listed in this datasheet.
4. The products in this datasheet are not developed, designed, or approved for use with
such equipment whose failure of malfunction can be reasonably expected to directly
endanger the life of, or cause significant injury to, the user.
(e.g. Atomic energy; aerospace; transport; combustion and associated safety
equipment thereof.)
5. Please use the products listed in this dat asheet within the specified ranges.
Should you wish to use the products under conditions exceeding the specifications,
please consult us or our representatives.
6. We assume no responsibility for damage or loss due to abnormal use.
7. All rights reserved. No part of this datasheet may be copied or reproduced without the
prior permission of TOREX SEMICONDUCTOR LTD.
22/22
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