Circuit Descriptions and List of Abbreviations
EN 111FM24 9.
9.9.3 Diagram P7, TEA1507 (IC7112 and IC7212)
Figure 9-23 Internal Block Diagram and pinning TEA1507
9.9.4 Diagram P7, L4973V (IC7260)
Figure 9-24 Internal Block Diagram and pinning L4973
SUPPLY
MANAGEMENT
internal
supply
UVLO start
M-level
V
CC
1
2
3
GND
S1
CTRL
FREQUENCY
CONTROL
VOLTAGE
CONTROLLED
OSCILLATOR
LOGIC
LOGIC
OVER-
VOLTAGE
PROTECTION
OVERPOWER
PROTECTION
short
winding
soft
start
S2
OVER-
TEMPERATURE
PROTECTION
SQ
R
UVLO
Q
MAXIMUM
ON-TIME
PROTECTION
POWER-ON
RESET
−1
VALLEY
TEA1507
100 mV
clamp
DRIVER
START-UP
CURRENT SOURCE
0.75 V
0.5 V
5
I
sense
6
DRIVER
4
DEM
8
DRAIN
7
HVS
n.c.
OCP
LEB
blank
I
ss
2.5 V
burst
detect
MGU231
MGU230
TEA1507
1
2
3
4
V
CC
GND
CTRL
DEM
DRAIN
HVS
DRIVER
I
sense
8
7
6
5
CL 16532099_115.eps
270901
OSC
OUT
OUT
GND
GND
V
CC
GND
V
CC
BOOT
1
3
2
4
5
6
7
8
9INH
VFB
COMP
GND
GND
GND
V5.1
SS
SYNC18
17
16
15
14
12
13
11
10
D94IN162A
VFB
COMP
GND
GND
GND
GND
V5.1
SS
SYNC1
3
2
4
5
6
7
8
9
18
17
16
15
14
12
13
11
19
10
20
INH
VREF
GOOD
5.1V
COMP
VFB
SYNC
BOOT
DRIVER
HICCUP CURRENT
LIMITING
INTERNAL
REFERENCE
SS
INH
ZERO CURRENT
INHIBIT
D94IN161B
+
-
3.3V
V5.1
E/A
SOFT
START
5.1V
3.3V
THERMAL
SHUTDOWN
INTERNAL
SUPPLY
5.1V
-
+
PWM
CURRENT
LIMITING
R
S
Q
Q
CBOOT
CHARGE
OSCILLATOR
OUTOUTGNDOSC
V
CC
V
CC
17(19)
11(12)
12(13)
18(20)
1(1) 2(2) 3(3)
9(10)
8(9)7(8)16(18)10(11)
4,5,6,13,14,15
(4,5,6,7,14,15,16,17)
Pin x = Powerdip
Pin (x) = S020
BLOCK DIAGRAM
CL 16532099_116.eps
270901
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Digitized in Heiloo, Holland
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