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参数资料
| 型号： | TK61220AQ4 |
| 厂商： | TOKO INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHING REGULATOR, QCC24 |
| 封装： | 4 X 4 MM, HQFN-24 |
| 文件页数： | 10/23页 |
| 文件大小： | 342K |
| 代理商： | TK61220AQ4 |
TK61220AQ4
GC3-N008B
Page 18
11-9. TK61220AQ4
16 White-LEDs Drive
Input voltage
: V
IN=7V16V
LED
: 68 LEDs in series
LED current
: 73.5mA(DIM pin 3.0V14.5V condition) 100mA setting at the maximum is possible.
Inductor peak current
: 1.5Amax
Oscillator frequency
: 350kHz
11-9-1. Application Circuit
1
2
3
4
5
24
23
22
21
PGND
IS2
FB2
OVP2
EAOUT2
DIM
CT
SW1
VDD
EAOUT1
EN1
EN2
11
17
16
15
14
20
RT
DTC
REF
6
13
PGOOD1
PGOOD2
12
19
PVIN2
18
7
8
9
10
SW2
PVIN1
PWM SIGNAL
IS1
FB1
OVP1
V
REF
V
OUT1
EN
V
DD
V
IN
V
OUT2
GND
R
DTC1
R1A
R
OVPA
R
ISA
R
LED2
R
DTC2
R
OVPB
R
ISB
C
T
C
OUTA
C
OUTB
C
IN
R2
A
R1B
R2B
C1
A
C1B
C
DD
TR1A
TR1B
D1A
D1B
D
OVPA
LA
LB
R
T
DIMMING
TR7A
AGND
SW2
OSC
OSC1
PWM COMP2
DRIVER 2
OVP AMP2
DIM
FET CURRENT
SENSE2
PWM COMP1
DRIVER 1
OVP AMP1
ERROR AMP1
LED CURRENT
SENSE1
FET CURRENT
SENSE1
DTC
DIMMING
CONTROL
TIMMER LACH1
TIMMER LACH2
DIM
T-LACH1
0.1V
T-LACH1
1.5V
T-LACH1
DRIVER1
LED CURRENT
SENSE1
FET CURRENT
SENSE1
0.7V
0.5V
DRIVER1
DRIVER2
LED
CURRENT
SENDER2
FET
CURRENT
SENSE2
DRIVER2
T-LACH2
0.1V
1.5V
0.7V
T-LACH2
LED CURRENT
SENSE2
EAOUT2
EAOUT1
ERROR AMP2
DIM T-LACH2
V
REF(2.5V)
UVLO
TEMP
ENABLE
1ch
OSC
DIMMING
CONTROL
2ch
EN1 EN2
OSC2
OSC1
OSC2
OVP2
OVP1
T-LACH1
T-LACH2
R
LED1
R14A
D
OVPB
TR7B
R14B
R9
11-9-2. Value of component
RIS: 0.047
RLED: 6.8 ±1%
ROVP 82k
DOVP: 2M
RT: 11k±1%
RDTC1: 33k±1%
RDTC2: 33k ±1%
R1: 1k
R2: 470k
R9: SHORT
R14: 100k
D1: 100V , Io=3A
TR1: Nch-60V, 2A, 4V drive
TR7: Nch-50V, 0.2A,2.5 drive
L: 10
H
(TOKO D63LCB Type, Part Number: A921CY-100M)
CIN: 4.7F/35V (KYOCERA CM316X5R475M35A)
CDD: 4.7F/16V (KYOCERA CM21X5R475M16A)
CT: 120pF/50V (KYOCERA CM05CH121J50A)
C1
: 0.1F/10V (KYOCERA CM05X5R104K10A)
COUT: 0.1F/50V
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