TL1451_08 Datasheet, PDF (7/14 Pages) Unisonic Technologies – DUAL PULSE-WIDTH-MODULATION CONTROL CIRCUITS

TL1451
„ TYPICAL CHARACTERISTICS
18
LINEAR INTEGRATED CIRCUIT
Protection Enable Time vs
Protection Enable Capacitance
15
12
9
6
3
0
0 50 100 150 200 250
Protection Enable Capacitance, C_PE (μF)
Short-circuit
Protection
Comparator
ERROR AMP 1
ERROR AMP 2
+
1.25V
-
12kΩ
SCP
15
V_REF
16
170kΩ
V_REF
S
R
CPE
Protection
Latch
V_REF
U.V.L.O.
70
VCC = 5V
60 ^{RREF = 150Ω}
C_REF = 470pF
Ta = 25℃
50
40
30
20
10
0
100
Closed-Loop Gain and Phase Shift vs Frequency
Closed-Loop Gain
(Left Scale)
1k
10k
Frequency, f (Hz)
C_X: 47pF
470pF
4700pF
Phase Shift
(Right Scale)
0°
-10°
-20°
-30°
-40°
-50°
-60°
-70°
100k
-80°
-90°
1M
V_REF
39kΩ
39kΩ
+
-
CX
R_REF
C_REF
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
7 of 14
QW-R103-011.D