Package Pin Description
PIN SYMBOL
PACKAGE PIN #
FUNCTION
Flip-Chip
(Bump #)
16 Lead
SO Wide
1
2
13
OUT
S
Output control of darlington driver.
Current sense feedback input.
Stall timer capacitor.
15
3
16
CS
4
1
MB
NC
CR
IN+
IN-
Gnd
VCC
D
Master current bias resistor.
No connection.
5
2,3,6,7,10,14
6
4
5
Reset capacitor.
7
Input control.
8
Negative input control (grounded in 16 Lead SO package).
Ground.
9
8
9
10
11
12
13
Input supply voltage.
11
12
Darlington drive supply input.
Input collector voltage sense.
Test bump, grounded.
IC
TEST
Block Diagram
RVCC
VBAT
330W
RMB
10.7k
CR
0.1mF
CS
0.47mF
CVCC
0.1mF
VCC
MB
CR
CS
VR
PNP Current Source Bias
VR
VR
VR
25%
149mA
1.1mA
8.4mA
149k
VR
P2
VBG
OVS
Power
Supply
25%
33.6mA 25%
25%*Stall
31.9mA
+
-
Gnd
RD
55W, 5W
INPUT
25%
To CR, CS Current Sources
VR
RIN+
10k
IN+
Negative
Edge
Filter
D
V
C
D
Q
IN
CR > VREF
STALL
Spark Plug
Combinational
Logic
ZD
18V
LOGIC1
ILIMIT
DWELL
P1
R
VR
OUT
CR
BG
-
+
+
-
ND1
+
-
N5
8k
5k
VR
ND2
OVS
100k
13.7V
Clamp
VREF
N4
RIC2
4k
CR
IC
S
+
-
63.7k
BG
CS
N2
N1
N3
2.55k
0.63k
RIC1
200W
BG
+
-
BG
+
-
7k
Adjust for 6.5A Coil Current
RS1
56W
RS2
0.05W, 5W
12k
3
CHERRY [ CHERRY SEMICONDUCTOR CORPORATION ]
