HV9608TS Просмотр технического описания (PDF) - Supertex Inc
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HV9608TS Datasheet PDF : 6 Pages
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HV9608
Electrical Characteristics (continued from page 2) (The * denotes the specifications which apply over the full
operating temperature range of -40°C < TA < +85°C, otherwise the specifications are at TA = 25°C, VDD = 10V, unless otherwise noted)
RT_Oscillator
Symbol
Parameter
fOSC,MIN Minimum operating frequency
fOSC,MAX Maximum operating frequency
fOSC
Frequency variation
∆f/f
VDD supply voltage stability of
frequency
Min Typ Max Units Conditions
25
KHz RT = 1.862MΩ
800
KHz RT = 52.3KΩ
220 250 280 KHz * RT = 169KΩ
3
%
RT = 169KΩ, 7.8V < VDD < 12V
PWM
Symbol
DMAX
DMAX
DMIN
DMIN
Parameter
Maximum GATE duty cycle
Maximum GATE duty cycle
Minimum GATE duty cycle
Minimum GATE duty cycle
Min Typ Max Units Conditions
95
% * fOSC = 100KHz (RT = 453KΩ)
85
% * fOSC = 800KHz (RT = 52.3KΩ)
0
%
0
%
Reference
Symbol
Parameter
VREF
Reference output voltage
ISRC
Maximum sourcing current
VREF
Load regulation
VREF
Line regulation
Min
1.112
2
Typ
1.135
Max
1.158
5
20
Units
V
mA
mV
mV
Conditions
*
0 < IREF < 2 mA
7.8V < VDD < 12V
Current Sensing
Symbol
Parameter
VCS
tBLANK
Current limit threshold voltage
Leading edge current sense
blanking time
tDELAY
Current limit delay to output
Min Typ Max Units
0.58 0.6 0.62 V
Conditions
100
nSec
70
120 nSec
VCS = 0 to 1V step after blanking
time
Error Amplifier
Symbol
Parameter
IFB
Input bias current
VFB
FB input voltage
AVOL
Open loop voltage gain
BW
Unity gain bandwidth
ISOURCE
ISINK
VCOMP
Maximum output current sourcing
Maximum output current sinking
Output clamped voltage
Min
1.112
70
2
2
4
3.3
Typ
25
1.135
3.45
Max
200
1.158
3.6
Units
nA
V
dB
MHz
mA
mA
V
Conditions
VFB = VCOMP
VFB = VCOMP
Soft Start
Symbol
Parameter
VSS,LOW Soft start low output
VSS,HI
Soft start high output
ISS,HI
tF
I SS,LO
Soft start output current
Soft start output fall time
Pulse-by-pulse current limit mode
sink current
Min Typ Max Units
0.1 V
5.25 5.45 5.65 V
7
µA
10 µSec
7
µA
Conditions
CSS = 0.1µF; VFB = VCOMP;
3
A122104
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