NCV898031(2012) Просмотр технического описания (PDF) - ON Semiconductor
Номер в каталоге
Компоненты Описание
производитель
NCV898031 Datasheet PDF : 13 Pages
| |||
NCV898031
ELECTRICAL CHARACTERISTICS (−40°C < TJ < 150°C, 3.2 V < VIN < 40 V, unless otherwise specified) Min/Max values are
guaranteed by test, design or statistical correlation.
Characteristic
Symbol
Conditions
Min Typ Max Unit
GENERAL
Quiescent Current, Sleep Mode
Quiescent Current, Sleep Mode
Quiescent Current, No switching
Quiescent Current, Switching,
normal operation
Iq,sleep
Iq,sleep
Iq,off
Iq,on
VIN = 13.2 V, EN = 0, TJ = 25°C
VIN = 13.2 V, EN = 0, −40°C < TJ < 125°C
Into VIN pin, EN = 1, No switching
Into VIN pin, EN = 1, Switching
−
2.0
−
mA
−
2.0
6.0
mA
−
1.5
2.5
mA
−
4.0
6.0
mA
OSCILLATOR
Minimum pulse width
Maximum duty cycle
Switching frequency
Soft−start time
Soft−start delay
Slope compensating ramp
ENABLE
ton,min
Dmax
fs
tss
tss,dly
Sa
From start of switching with VFB = 0 until
reference voltage = VREF
From EN → 1 until start of switching with
VFB = 0
30
65
90
ns
85
88
90
%
1.8
2.0
2.2
MHz
520 650 780
ms
80
100 280
ms
28
34
40 mV/ms
EN pull−down current
EN input high voltage
EN input low voltage
EN time−out ratio
IEN
Vs,ih
Vs,il
%ten
VEN = 5 V
−
5.0
10
mA
2.0
−
5.0
V
0
−
800
mV
From EN falling edge, to oscillator control
−
250 350
%
(EN high) or shutdown (EN low), Percent of
typical switching frequency
CURRENT SENSE AMPLIFIER
Low−frequency gain
Bandwidth
ISNS input bias current
Current limit threshold voltage
Current limit,
Response time
Overcurrent protection,
Threshold voltage
Acsa
BWcsa
Isns,bias
Vcl
tcl
%Vocp
Input−to−output gain at dc, ISNS v 1 V
Gain of Acsa − 3 dB
Out of ISNS pin
Voltage on ISNS pin
CL tripped until GDRV falling edge,
VISNS = Vcl + 40 mV
Percent of Vcl
0.9
1.0
1.1
V/V
2.5
−
−
MHz
−
30
50
mA
360 400 440
mV
−
80
125
ns
125 150 175
%
Overcurrent protection,
Response Time
tocp
From overcurrent event, Until switching
stops, VISNS = VOCP + 40 mV
VOLTAGE ERROR OPERATIONAL TRANSCONDUCTANCE AMPLIFIER
−
80
125
ns
Transconductance
VEA output resistance
VFB input bias current
Reference voltage
VEA maximum output voltage
VEA minimum output voltage
VEA sourcing current
VEA sinking current
gm,vea
Ro,vea
Ivfb,bias
Vref
Vc,max
Vc,min
Isrc,vea
Isnk,vea
VFB – Vref = ± 20 mV
Current out of VFB pin
VEA output current, Vc = 2.0 V
VEA output current, Vc = 0.7 V
0.92 1.28 1.63
mS
2.0
−
−
MW
−
0.5
2.0
mA
1.176 1.200 1.224
V
2.5
−
−
V
−
−
0.3
V
80
100
−
mA
80
100
−
mA
http://onsemi.com
4
Share Link: 