NCP4355B データシートの表示（PDF） - ON Semiconductor
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NCP4355B Datasheet PDF : 17 Pages
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NCP4355
PIN FUNCTION DESCRIPTION
NCP4355A NCP4355B NCP4355C
8
8
8
7
7
7
1
1
1
2
2
2
−
3
3
3
−
4
4
4
−
6
6
6
5
5
5
Pin Name
VCC
GND
VSNS
OFFDET
VMIN
ISNS
LED
FBC
ON/OFF
Description
Supply voltage pin
Ground
Output voltage sensing pin, connected to output voltage divider
OFF mode detection input. Voltage divider provides adjustable off mode
detection threshold
Minimum output voltage adjustment
Current sensing input for output current regulation, connect it to shunt
resistor in ground branch.
PWM LED driver output. Connected to LED cathode with current define by
external serial resistance
Output of current sinking OTA amplifier or amplifiers driving feedback op-
tocoupler’s LED. Connect here compensation network (networks) as well.
ON mode current sink. This output keeps primary control pin at low level
in on mode.
ABSOLUTE MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Input Voltage
ON/OFF, FBC, LED Voltage
VSNS, ISNS, OFFDET, VMIN Voltage
LED Current
Thermal Resistance − Junction−to−Air (Note 1)
NCP4355A/C
NCP4355B
VCC
VONOFF, VFBC, VLED
VSNS, VISNS, VOFFDET, VMIN
ILED
RqJA
−0.3 to 40.0
−0.3 to VCC + 0.3
−0.3 to 10.0
10
260
277
V
V
V
mA
°C/W
Junction Temperature
TJ
−40 to 150
°C
Storage Temperature
TSTG
−60 to 150
°C
ESD Capability, Human Body Model (Note 2)
ESDHBM
2000
V
ESD Capability, Machine Model (Note 2)
ESDMM
250
V
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. 50 mm2, 1.0 oz. Copper spreader.
2. This device series incorporates ESD protection and is tested by the following methods:
ESD Human Body Model tested per JESD22−A114F
ESD Machine Model tested per JESD22−A115C
Latchup Current Maximum Rating tested per JEDEC standard: JESD78D.
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