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BL0202B 데이터시트 PDF




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BL0202B 데이터시트, 핀배열, 회로
High Efficiency
For LED Backlight 2ch LED Driver IC
BL0200 Series
General Descriptions
BL0200 series are 2ch output LED driver IC for LED
backlight, and it can do dimming to 0.02 % by external
PWM signal.
This IC realizes a high efficiency by the boost
convertor control that absorbs variability on VF.
The product easily achieves high cost-performance
LED drive system with few external components and
enhanced protection functions.
Package
SOP18
Features and Benefit
Boost convertor
Current-Mode type PWM Control
PWM frequency is 100 kHz o r 200 kHz
Maximum On Duty is 90 %
LED current control
Individual PWM Dimming Control
Analog Dimming
High contrast ratio is 1 / 5000
Accuracy of Reg output voltage is ± 1.5 % or ± 2 %
Protection functions
Enable Function of IC (BL0202B, BL0202C)
Error Signal Output (BL0200C)
Overcurrent Protection for Boost Circuit (OCP)
----------------------------------------------Pulse-by-pulse
Overcurrent Protection for LED Output (LED_OCP)
----------------------------------------------Pulse-by-pulse
Overvoltage Protection (OVP) ----------- Auto restart
Output Open/Short Protection ------------ Auto restart
Thermal Shutdown (TSD)----------------- Auto restart
Not to scale
Lineup
Products
BL0202C
BL0202B
BL0200C
Frequency
200 kHz
100 kHz
VREG
Accuracy
± 1.5 %
Built-in Function
Enable Function of
IC
200 kHz ± 2 % Error Signal Output
Applications
LED backlights
LED lighting etc.
Typical Application Circuit
BL0202B/C
VCC
DRV1
VREF
PWM1
PWM2
OC1
SW1
EN IFB1
DRV2
OC2
REG
COMP1
COMP2
GND
OVP
SW2
IFB2
TC_BL0202_1_R1
BL0200C
VCC
DRV1
VREF
PWM1
PWM2
OC1
SW1
ER IFB1
DRV2
OC2
REG
COMP1
COMP2
GND
OVP
SW2
IFB2
TC_BL0200C_1_R1
BL0200-DS Rev.2.3
May. 15, 2014
SANKEN ELECTRIC CO.,LTD.
1




BL0202B pdf, 반도체, 판매, 대치품
BL0200 Series
2. Electrical characteristics
The polarity value for current specifies a sink as "+," and a source as "−," referencing the IC.
Unless otherwise specified, TA is 25 °C, VCC = 12 V
Parameter
Symbol
Test
Conditions
Pins
Min. Typ. Max.
Start / Stop Operation
Operation Start Voltage*
VCC(ON)
10 9 8.5 9.6 10.5
Unit
V
Operation Stop Voltage
Circuit Current in Operation
Circuit Current in
Non-Operation
REG Pin Output Voltage
VCC(OFF)
ICC(ON)
ICC(OFF)
VREG
10 9 7.8 8.6 9.2
8.0 9.1 10.0
V
10 9 5.3 8.0 mA
VCC = 7.5 V 10 9
70 200 µA
1 9 4.925 5.000 5.075
4.9 5.0 5.1
V
Oscillation
PWM Operation Frequency
fPWM1
fPWM2
Maximum ON Duty
Minimum ON Time
COMP Pin Voltage at
Oscillation Start
COMP Pin Voltage at
Oscillation Stop
VREF / IFB Pin
VREF Pin Minimum Setting
Voltage
VREF Pin Maximum Setting
Voltage
IFB Pin Voltage at COMP
Charge Switching
IFB Pin Overcurrent Protection
High Threshold Voltage
IFB Pin Overcurrent Protection
Low Threshold Voltage
IFB Pin Overcurrent Protection
Release Threshold Voltage
IFB Pin Voltage at Auto Restart
Operation
IFB Pin Bias Current
DMAX1
DMAX2
tMIN1
tMIN2
VCOMP1(ON)
VCOMP2(ON)
VCOMP1(OFF)
VCOMP2(OFF)
VREF(MIN) VREF = 0 V
VREF(MAX) VREF = 5 V
VIFB1(COMP1)
VIFB2(COMP2)
VIFB1(OCH)
VIFB2(OCH)
VIFB1(OCL)
VIFB2(OCL)
VIFB1(OCL-OFF)
VIFB2(OCL-OFF)
VIFB1(AR)
VIFB2(AR)
IIFB1(B)
IIFB2(B)
VREF = 1 V
VREF = 1 V
VREF = 1 V
VREF = 1 V
VIFB1 = 5 V
VIFB2 = 5 V
Current Detection Threshold
Voltage
VIFB1
VIFB2
VREF = 1 V
79
12 9
95
190
100
200
105
210
kHz
79
12 9
85
90
95
79
12 9
200
310
400
49
15 9
0.35
0.50
0.65
49
15 9
0.10
0.25
0.40
%
ns
V
V
18 9 0.05 0.25 0.45 V
18 9
59
14 9
59
14 9
59
14 9
59
14 9
59
14 9
59
14 9
59
14 9
1.75 2.00 2.35
0.55 0.60 0.65
3.8 4.0 4.2
1.9 2.0 2.1
1.5 1.6 1.7
0.45 0.50 0.55
−−1
0.98 1.00 1.02
0.985 1.000 1.015
V
V
V
V
V
V
µA
V
COMP Pin
COMP Pin Maximum Output
Voltage
VCOMP1(MAX) VIFB1 = 0.7 V 4 9
VCOMP2(MAX) VIFB2 = 0.7 V 15 9
4.8
5.0
V
Notes
BL0202B
BL0202C
BL0200C
BL0202B
BL0202C
BL0200C
BL0202B
BL0200C
BL0202C
BL0202B
BL0202C
BL0200C
* VCC(ON) > VCC(OFF)
BL0200-DS Rev.2.3
May. 15, 2014
SANKEN ELECTRIC CO.,LTD.
4

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BL0202B 전자부품, 판매, 대치품
BL0200 Series
4. Pin List Table
REG
OVP
PWM1
COMP1
IFB1
OC1
DRV1
SW1
GND
1
2
3
4
5
6
7
8
9
Number
18 VREF
17 EN / ER
16 PWM2
15 COMP2
14 IFB2
1
2
3
4
5
13 OC2
12 DRV2
11 SW2
10 VCC
6
7
8
9
10
11
12
13
14
15
16
17
18
Name
REG
OVP
PWM1
COMP1
IFB1
OC1
DRV1
SW1
GND
VCC
SW2
DRV2
OC2
IFB2
COMP2
PWM2
EN
ER
VREF
Function
Internal regulator output
Overvoltage detection signal input
PWM dimming signal input (1)
Phase compensation and soft-start setting (1)
Feedback signal input of current detection
(1)
Current mode control signal input (1) and
overcurrent protection signal input (1)
Boost MOSFET gate drive output (1)
Dimming MOSFET gate drive output (1)
Ground
Power supply voltage input
Dimming MOSFET gate drive output (2)
Boost MOSFET gate drive output (2)
Current mode control signal input (2) and
overcurrent protection signal input (2)
Feedback signal input of current detection
(2)
Phase compensation and soft-start setting (2)
PWM dimming signal input (2)
Enable signal input (BL0202B, BL0202C)
Error signal output (BL0200C)
Detection voltage setting
BL0200-DS Rev.2.3
May. 15, 2014
SANKEN ELECTRIC CO.,LTD.
7

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BL0202B

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