LC-37XD10E/RU
5 – 18
9. IC1712: VHIMP1410ES-1
Step Down Converter.
10. IC1706: VH+-1
Step Down Converter
Pin No.
Pin Name
I/O
Pin Function
1
BS
I
High-Side Gate Drive Boost input.
BS supplies the drive for the high-side n-channel MOSFET switch.
Connect a 10nF or greater capacitor from SW to BS to power the high-side switch.
2
IN
I
Power input.
IN supplies the power to the IC, as well as the step-down converter switches.
Drive IN with a 4.75V to 15V power source.
Bypass IN to GND with a suitably large capacitor to eliminate noise on the input to the IC.
See input Capacitor.
3
SW
O
Power Switching Output.
SW is the switching node that supplies power to the output.
Connect the output LC filter from SW to the output load.
Note that a capacitor is required from SW to BS to power the high-side switch.
4
GND
-
Ground.
5
FB
I
Feedback input.
FB senses the output voltage to regulate that voltage.
Drive FB with a resistive voltage divider from the output voltage.
The feedback threshold is 1.22V.
See Setting the Output Voltage.
6
COMP
-
Compensation Node.
COMP is used to compensate the regulation control loop.
Connect a series RC network from COMP to GND to compensate the regulation control loop.
See Compensation.
7
EN
I
Enable input.
EN is a digital input that turns the regulator on or off.
Drive EN high to turn on the regulator, drive it low to turn it off.
For automatic startup, leave EN unconnected.
8
N/C
-
No Connect.
Pin No.
Pin Name
I/O
Pin Function
1
BS
I
High-Side Gate Drive Boost lnput.
BS supplies the drive for the high-side n-channel MOSFET Switch.
Connect a 4.7nF or greater capacitor from SW to BS to power the high side switch.
2
IN
I
Power input.
IN supplies the power to the IC, as well as the step-down converter switches.
Drive IN with a 4.75V to 23V power source.
Bypass IN to GND with a suitably large capacitor to eliminate noise on the input to the IC.
See Input Capacitor.
3
SW
O
Power Switching Output.
SW is the switching node that supplies power to the output.
Connect the output LC filter from SW to the output load.
Note that a capacitor is required from SW to BS to power the high-side switch.
4
GND
-
Ground. (Note: Connect the exposed pad on backside to Pin4).
5
FB
I
Feedback input.
FB senses the output voltage to regulate that voltage.
Drive FB with a resistive voltage divider from the output voltage.
The feedback threshold is 1.222V.
See Setting the Output Voltage.
6
COMP
I
Compensation Node.
COMP is used to compensate the regulation control loop.
Connect a series RC network from COMP to GND to compensate the regulation control loop.
In same cases, an additional capacitor from COMP to GND is required.
See Compensation.
7
EN
I
Enable input
EN is a digital input that turns the regulator on or off.
Drive EN high to turn on the regulator, drive it low to tum it off.
For automatic startup, leave EN unconnected.
8
SS
I
Soft Start Control input.
SS controls the soft start period.
Connect a capacitor from SS to GND to set the soft-start period.
A 0.1
µ
F capacitor sets the soft-start period to l0ms
To disable the soft-start featur CIeave SS unconnected.
Summary of Contents for LC-37XD10
Page 4: ...LC 37XD10E RU 1 1 LC37XD10E Service Manual CHAPTER 1 OPERATION MANUAL 1 SPECIFICATIONS ...
Page 5: ...LC 37XD10E RU 1 2 2 OPERATION MANUAL ...
Page 6: ...LC 37XD10E RU 1 3 ...
Page 7: ...LC 37XD10E RU 1 4 ...
Page 8: ...LC 37XD10E RU 1 5 3 DIMENSIONS ...
Page 62: ...LC 37XD10E RU 5 6 2 1 Block Diagram ...
Page 83: ...LC 37XD10E RU 5 27 MEMO ...
Page 85: ...LC 37XD10E RU 6 2 ...
Page 86: ...LC 37XD10E RU 6 3 2 BLOCK DIAGRAM BLOCK DIAGRAM ...
Page 87: ...LC 37XD10E RU 6 4 ...
Page 88: ...LC 37XD10E RU 6 5 3 MAIN BLOCK DIAGRAM ...
Page 89: ...LC 37XD10E RU 6 6 ...
Page 90: ...LC 37XD10E RU 6 7 4 POWER BLOCK DIAGRAM POWER BLOCK DIAGRAM ...
Page 91: ...LC 37XD10E RU 6 8 ...
Page 94: ...LC 37XD10E RU 7 3 3 MAIN UNIT PRINTED WIRING BOARD MAIN Unit Side A ...
Page 95: ...LC 37XD10E RU 7 4 ...
Page 98: ...LC 37XD10E RU 7 7 MAIN Unit Side B ...
Page 99: ...LC 37XD10E RU 7 8 ...
Page 109: ...LC 37XD10E RU 7 18 1 2 3 4 5 6 7 9 10 8 J A B C D E F G H I POWER Unit Side B ...
Page 113: ...LC 37XD10E RU 7 22 11 12 13 14 15 16 17 18 19 20 ...
Page 116: ...LC 37XD10E RU 7 25 1 2 3 4 5 6 7 8 9 A B C D E F G H I J 10 DIGITAL Unit Side B ...
Page 117: ...LC 37XD10E RU 7 26 11 12 13 14 15 16 17 18 19 20 ...
Page 120: ...LC 37XD10E RU 7 29 M E M O ...
Page 122: ...LC 37XD10E RU 8 2 2 SCHEMATIC DIAGRAM MAIN Unit 1 8 ...
Page 123: ...LC 37XD10E RU 8 3 ...
Page 124: ...LC 37XD10E RU 8 4 MAIN Unit 2 8 ...
Page 125: ...LC 37XD10E RU 8 5 ...
Page 126: ...LC 37XD10E RU 8 6 MAIN Unit 3 8 ...
Page 127: ...LC 37XD10E RU 8 7 ...
Page 128: ...LC 37XD10E RU 8 8 MAIN Unit 4 8 ...
Page 129: ...LC 37XD10E RU 8 9 ...
Page 130: ...LC 37XD10E RU 8 10 MAIN Unit 5 8 ...
Page 131: ...LC 37XD10E RU 8 11 ...
Page 132: ...LC 37XD10E RU 8 12 MAIN Unit 6 8 ...
Page 133: ...LC 37XD10E RU 8 13 ...
Page 134: ...LC 37XD10E RU 8 14 MAIN Unit 7 8 ...
Page 135: ...LC 37XD10E RU 8 15 ...
Page 136: ...LC 37XD10E RU 8 16 MAIN Unit 8 8 ...
Page 137: ...LC 37XD10E RU 8 17 ...
Page 138: ...LC 37XD10E RU 8 18 AV Unit ...
Page 139: ...LC 37XD10E RU 8 19 ...
Page 140: ...LC 37XD10E RU 8 20 1 2 3 4 5 6 7 9 10 8 J A B C D E F G H I POWER Unit ...
Page 141: ...LC 37XD10E RU 8 21 11 13 12 14 15 16 18 19 17 AND SHADED COMPONENTS SAFETY RELATED PARTS ...
Page 142: ...LC 37XD10E RU 8 22 D TUNER Unit ...
Page 143: ...LC 37XD10E RU 8 23 AND SHADED COMPONENTS SAFETY RELATED PARTS ...
Page 144: ...LC 37XD10E RU 8 24 DIGITAL Unit 1 4 ...
Page 145: ...LC 37XD10E RU 8 25 ...
Page 146: ...LC 37XD10E RU 8 26 DIGITAL Unit 2 4 ...
Page 147: ...LC 37XD10E RU 8 27 ...
Page 148: ...LC 37XD10E RU 8 28 DIGITAL Unit 3 4 ...
Page 149: ...LC 37XD10E RU 8 29 ...
Page 150: ...LC 37XD10E RU 8 30 DIGITAL Unit 4 4 ...
Page 151: ...LC 37XD10E RU 8 31 ...
Page 152: ...LC 37XD10E RU 8 32 1 2 3 4 5 6 7 8 9 A B C D E F G H I J 10 KEY Unit ...
Page 153: ...LC 37XD10E RU 8 33 R C LED Unit ...
Page 154: ...LC 37XD10E RU 8 34 M E M O ...
Page 187: ...LC 37XD10E 33 12 PACKING PARTS S1 S2 S2 S7 S6 S6 S3 S2 S4 S5 S5 S2 S8 ...
Page 189: ...LC 37XD10E RU ...