TL5001 Datasheet, PDF (10/13 Pages) Texas Instruments – PULSE-WIDTH-MODULATION CONTROL CIRCUITS

TL5001
APPLICATION INFORMATION
LINEAR INTEGRATED CIRCUIT
VIN
5V
GND
C1 ₊
100È°F
10V
R1
470Ȥ
C3
0.1È°F
C4
1È°F
+
C4
0.1È°F
R2
56kȤ
R3
43kȤ
2
V _CC
5 _SCP
VOUT ¹
3
COMP
UTC
TL5001
6 _DTC
7 _RT
GND
8
FB ⁴
Partial Bill of Materials:
Q1 TPS1101
Texas Instruments
L1 CTX20-1 or
Coiltronics
23 turns of #28 wire on
Micrometals No. T50-26B core
C1 TPSD 107M010R0100
AVX
C2 TPSD 107M010R0100
AVX
CR1 MBRS 140T3
Motorola
Q1
TPS1101
L1
20È°H
CR1
MBRS140T3
C2
+
100È°F
10V
C6
0.012È°F
R4
5.1kȤ
NOTES: A. Frequency = 200KHz
B. Duty cycle = 90% max
C. Soft-start time constant (TC) = 5.6ms
D. SCP TC = 70msA
Figure 5. Step-Down Converter
3.3V
GND
R5
7.50kȤ
1%
R7
2.0kȤ
C7
0.0047È°F
R6
3.24kȤ
1%
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
10 of 13
QW-R103-016,B