NCP1239(2005) データシートの表示（PDF） - ON Semiconductor
部品番号
コンポーネント説明
メーカー
NCP1239 Datasheet PDF : 38 Pages
| |||
NCP1239
ELECTRICAL CHARACTERISTICS (For typical values TJ = 25°C, for min/max values TJ = 0°C to +125°C, Vpin16 = 48 V,
VCC = 20 V unless otherwise noted.)
Symbol
Rating
Pin
Min
Typ
Max
Unit
Soft−Start and Timer
Ich
Soft−Start or Jittering charge current @ Vpin6 = 2.4 V
Idisch
Jittering Discharge Current @ Vpin6 = 2.4 V
Vjitter
Jittering Saw−Tooth Lower Threshold
VjitterH
Jittering Saw−Tooth Upper Threshold
VtimerL
Timer Peak Threshold
ItimerC
Timer Charge Current @ Vpin6 = 3.5 V and Pin 8 open
ItimerD
Timer Discharge Current @ Vpin6 = 3.5 V and Pin 8 open
Feedback Section
Rup
Internal Pullup Resistor
6
60
95
110
mA
6
77
107
137
mA
6
1.67 1.80 1.89
V
6
2.85 3.00 3.20
V
6
4.0
4.3
4.6
V
6
3.9
5.2
6.4
mA
6
−
400
−
mA
8
−
20
−
kW
Ifb
Iratio
Source Current @ Vpin8 = 0.5 V
Pin 8 to current Setpoint division ratio
8
−
200
−
mA
−
−
3.0
−
−
Internal Ramp Compensation
Rramp
Internal Resistor
Vramp
Internal Saw−Tooth Amplitude
Skipping Mode and Standby Management
Rgts
Pin 1 output impedance in standby state
(Pin 8 grounded, Vpin6 > 4.5 V) @ VCC = 12.5 V
Igts
Sink Current Source in Normal Mode
@ Vpin8 = 2 V, Pin 7 open @ VCC − Vpin1=0.7 V
FB−skip
Default Feedback Level for Skip−Cycle Operation and Standby
Detection
10
−
32
−
kW
10
−
3.2
−
V
1
4.0
8.0
18
kW
1
0.6
1.0
−
mA
7
380
430
480
mV
FB_stby−out Default Feedback Level to Leave Standby
7
650
740
810
mV
Vstby−out/Vskip
Rpin7
Ratio leave standby Setpoint to skip−cycle Setpoint
Internal Pin 7 Impedance
Pin 7 to Skipping Setpoint ratio
1.5
1.7
1.9
−
7
−
110
−
kW
−
3.0
−
−
Brown−Out Detection
BOthH
Brown−Out Detection Upper Threshold
BOthL
Brown−Out Detection Low Threshold
BOhyst
Brown−Out Hysteresis
Protections
TSD
Thermal Shutdown:
Thermal Shutdown Threshold
Hysteresis
5
0.45 0.50 0.55
V
5
0.20 0.24 0.28
V
5
0.20 0.26 0.30
V
°C
140
30
Vfault
Fault Detection Threshold
3
2.2
2.4
2.6
V
ORDERING INFORMATION
Device
Package
Shipping†
NCP1239FDR2
SOIC−16
2500 / Tape & Reel
NCP1239FDR2G
SOIC−16
(Pb−Free)
2500 / Tape & Reel
NCP1239VDR2
SOIC−16
2500 / Tape & Reel
NCP1239VDR2G
SOIC−16
(Pb−Free)
2500 / Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
http://onsemi.com
5
Share Link: 