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L5107 데이터시트 PDF




Unisonic Technologies에서 제조한 전자 부품 L5107은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 L5107 기능
기능 CONSTANT CUTTENT BOOST CONTROLLER
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L5107 데이터시트, 핀배열, 회로
UNISONIC TECHNOLOGIES CO., LTD
L5107
Preliminary
LINEAR INTEGRATED CIRCUIT
CONSTANT CUTTENT BOOST
CONTROLLER FOR DRIVING
HIGH POWER LEDS
DESCRIPTION
The UTC L5107 is a high powered PWM boost converter
optimized for constant current applications such as driving one or
more strings of high power LEDs. The powerful drive circuitry can
deliver up to 70W to the LED system.
The output current can be set by an external resistor
connected the IADJ pin and GND. This average current can be
reduced by applying a PWM signal to the PWMD pin. The UTC
L5107 offers a dither feature to reduce EMI.
The UTC L5107 has a large input voltage range from 6V to
45V and the switching frequency can be set by an external
resistor between 100kHz and 1MHz for diffident LED systems. To
protect the device over voltage protection circuit and under
voltage lock-out circuit have been incorporated as well as thermal
shutdown circuit.
FEATURES
* Input voltage range: 6V~45V
* Feedback voltage: 0.25V±3%
* Maximum out power of 70W
* Programmable switching frequency and LED drive current
* Ultra low EMI via dithering on the UTC L5107
* Single pin for PWM dimming
* Protection circuit:
Over voltage protection circuit
Over temperature protection circuit
Under-voltage Lock-out circuit
* Accurate over the -40~125°C temperature range
ORDERING INFORMATION
Note:
Ordering Number
L5107G-P16-R
xx: Output Voltage, refer to Marking Information.
Package
TSSOP-16
Packing
Tape Reel
MARKING
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
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QW-R125-026.b




L5107 pdf, 반도체, 판매, 대치품
L5107
Preliminary
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATING (Note 2)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
Enable Pin Voltage
VIN +48 V
VEN -0.3~+6 V
IADJ Voltage
VADJ
+6
V
Storage Temperature
TS
-65~+150
°C
Notes: 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2. Exceeding the absolute maximum rating may damage the device.
3. The device is not guaranteed to function outside its operating rating.
THERMAL CHARACTERISTICS (Note 3)
PARAMETER
Junction Thermal Resistance
SYMBOL
θJA
RATINGS
36.5
UNIT
°С/W
OPERATING RATINGS (Note 3)
PARAMETER
Supply Voltage
Junction Temperature
SYMBOL
VIN
TJ
RATINGS
+6~+45
-40~+125
UNIT
V
°C
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 8
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L5107 전자부품, 판매, 대치품
L5107
Preliminary
LINEAR INTEGRATED CIRCUIT
POWER TOPOLOGY(Cont.)
Output Over Voltage Protection (OVP)
The UTC L5107 provides an OVP circuitry with a reference value of 1.25V in order to protect the system from an
over voltage fault condition. This OVP point can be programmed through the use of external resistors (R1 and R2 in
Figure 2). This OVP voltage can be calculated using Equation 3:
Eq. (3)
VOVP
1.25 (R1
R2
R2 )
Current Limit
The UTC L5107 features a current limit protection feature to prevent any current runaway conditions. The current
limit circuitry monitors current on a pulse by pulse basis. It limits the current through the inductor by sensing the
voltage across RCS. When 0.45V is present at the IS pin, the pulse is truncated. The next pulse continues as
normally until the IS pin reaches 0.45V and it is truncated once again. This will continue until the output load is
decreased.
Select RCS using Equation 4:
Eq. (4)
 RCS
0.45
V - VOUTMAX
INMIN
L FSW
D
ILPK_LIMIT
Slope Compensation
The UTC L5107 requires slope compensation for the peak current mode controller. The UTC L5107 uses an
external resistor, RSLC for slope compensation. The ability to set the proper slope compensation through the use of a
single external component results in design flexibility. Select RSLC using Equation 5:
Eq. (5)
 RSLC
V VOUTMAX
INMIN
RCS
L 250μΑ FSW
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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