Pin descriptions, Functional block diagram – Diodes ZXSC410/ZXSC420/ZXSC440 User Manual
Page 2
ZXSC410/ZXSC420/ZXSC440
Document number: DS33618 Rev. 5 - 2
2 of 17
March 2013
© Diodes Incorporated
ZXSC410/ZXSC420/ZXSC440
Pin Descriptions
Pin Name
Pin Number
Function
ZXSC410 ZXSC420 ZXSC440
V
CC
1 1 8
Supply
Voltage
GND 2 2 7
Ground
STDN
3
—
5
Shutdown (ZXSC410 and ZXSC440)
EOR
—
3
6
End of regulation (ZXSC420 and ZXSC440)
Sense 4 4 3
Inductor current sense input. Internal threshold voltage set to 28mV.
Connect external sense resistor.
V
FB
5 5 2
Reference voltage. Internal threshold set to 300mV.
Connect external resistor network to set output voltage.
Drive 6 6 1
Drive output for external switching transistor.
Connect to base or gate of external switching transistor.
NC — — 4
No
connection
Functional Block Diagram