NCP1083
http://onsemi.com
2
DCDC Converter Controller
" Current Mode Control
" Supports Isolated and Nonisolated DCDC Converter
Applications
" Internal Voltage Regulators
" Wide Duty Cycle Range with Internal Slope
Compensation Circuitry
" Programmable Oscillator Frequency
" Programmable Softstart Time
(Top View)
PIN DIAGRAM
Exposed
Pad
1
SS
FB
COMP
VDDL
VDDH
GATE
ARTN
nCLASS_AT
CS
OSC
VPORTP
CLASS
UVLO
INRUSH
ILIM1
VPORTN1
RTN
VPORTN2
AUX
TEST
ORDERING INFORMATION
Part Number
Temperature Range
Package
Shipping Configuration
NCP1083DEG
40癈 to 85癈
TSSOP20 EP
(PbFree)
74 units / Tube
NCP1083DER2G
40癈 to 85癈
TSSOP20 EP
(PbFree)
2500 / Tape & Reel
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specification Brochure, BRD8011/D.
INTERNAL
SUPPLY
&
BANDGAP
VDDH
INRUSH
ILIM1
CLASSIFICATION
DETECTION
VPORTN1,2
VPORTP
CLASS
INRUSH
ILIM1
VDDH
nCLASS_AT
VDDL
THERMAL
SHUT
DOWN
HOT SWAP SWITCH
CONTROL & CURRENT
LIMIT BLOCKS
UVLO
UVLO
RTN
ARTN
1.2 V
DCDC
CONVERTER
CONTROL
OSC
SS
FB
COMP
CS
GATE
VDDL
VDDL
VDDL
VDDH
5 K
OSC
VPORT
MONITOR
VDDL
Figure 1. NCP1083 Block Diagram
5 mA
AUX
DETECTION
AUXILIARY
SUPPLY
VDDL
20 mA
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