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HV9608 Datasheet(PDF) 3 Page - Supertex, Inc

Part # HV9608
Description  Active Clamp Current-Mode PWM Controller
Download  6 Pages
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Manufacturer  SUTEX [Supertex, Inc]
Direct Link  http://www.supertex.com
Logo SUTEX - Supertex, Inc

HV9608 Datasheet(HTML) 3 Page - Supertex, Inc

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


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