TL5001_15 Datasheet, PDF (10/13 Pages) Unisonic Technologies – PULSE-WIDTH-MODULATION CONTROL CIRCUIT

TL5001
 APPLICATION INFORMATION
LINEAR INTEGRATED CIRCUIT
V_IN
5V
GND
C1 ₊
100μF
10V
R1
470Ω
C3
0.1μF
C4
1μF
+
C4
0.1μF
R2
56kΩ
R3
43kΩ
2
V_CC
5 _SCP
V_OUT ¹
COMP ³
UTC
TL5001
6 _DTC
7 _RT
GND
8
FB ⁴
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
Q1
TPS1101
L1
20μH
CR1
MBRS140T3 _{C2 +}
100μF
10V
C6
0.012μF
R4
5.1kΩ
NOTES: A. Frequency = 200KHz
B. Duty cycle = 90% max
C. Soft-start time constant (TC) = 5.6ms
D. SCP TC = 70msA
Fig. 5 Step-Down Converter
3.3V
GND
R5
7.50kΩ
1%
R7
2.0kΩ
C7
0.0047μF
R6
3.24kΩ
1%
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
10 of 13
QW-R103-016.E