TL5001
APPLICATION INFORMATION
V
IN
5V
LINEAR INTEGRATED CIRCUIT
C1
100μF
10V
+
R1
470Ω
Q1
TPS1101
L1
20μH
GND
C3
0.1μF
2
C4
1μF
+
C4
0.1μF
R2
56kΩ
R3
43kΩ
5
V
CC
SCP
V
OUT
1
3
CR1
MBRS140T3
3.3V
+
C2
100μF
10V
GND
6
UTC
TL5001
DTC
COMP
7
RT
GND
8
FB
4
C6
0.012μF
R4
5.1kΩ
R5
7.50kΩ
1%
R7
2.0kΩ
C7
0.0047μF
R6
3.24kΩ
1%
Partial Bill of Materials:
Q1
L1
C1
C2
CR1
TPS1101
Texas Instruments
CTX20-1 or
Coiltronics
23 turns of #28 wire on
Micrometals No. T50-26B core
TPSD 107M010R0100
AVX
TPSD 107M010R0100
AVX
MBRS 140T3
Motorola
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
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
10 of 13
QW-R103-016,B
UTC-IC [ UNISONIC TECHNOLOGIES ]
