HV9910B Supertex, HV9910B Datasheet - Page 3

• Manufacturer Part Number: HV9910B
• Description: Universal High Brightness LED Driver
• Manufacturer: Supertex

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Electrical Characteristics
1.
†
*
#
Internal Regulator
PWM Dimming
Current Sense Comparator
Oscillator
GATE Driver
ΔV
∆UVLO
V
UVLO
I
T
V
I
V
V
SOURCE
Sym
t
IN,MAX
OFFSET
DELAY
I
t
t
V
Guaranteed by design.
R
f
Denotes the specifi cations which apply over the full operating ambient temperature range of -40°C < T
BLANK
Also limited by package power dissipation limit, whichever is lower.
CS,TH
SINK
RISE
FALL
DD, load
EN(lo)
EN(hi)
OSC
DD
EN
load current external to the HV9910B.
Description
Load regulation of V
V
V
Current that the regulator can
supply before IC goes into UVLO
Pin PWMD input low voltage
Pin PWMD input high voltage
Pin PWMD pull-down resistance
at PWMD
Current sense pull-in threshold
voltage
Offset voltage for LD comparator
Current sense blanking interval
Delay to output
Oscillator frequency
GATE sourcing current
GATE sinking current
GATE output rise time
GATE output fall time
DD
DD
undervoltage lockout threshold
undervoltage lockout hysteresis
(cont.)
DD
(cont.)
(The specifi cations are at T
-
*
-
#
*
*
-
-
*
*
-
-
-
-
-
-
-
6.45
Min
225
213
150
165
165
5.0
2.0
-12
50
20
80
0
-
-
-
-
-
3
Typ
500
100
250
250
215
100
6.7
80
25
30
30
-
-
-
-
-
-
-
A
= 25°C and V
Max
6.95
100
150
275
287
280
150
120
0.8
12
30
50
50
-
-
-
-
-
Units
kHz
mV
mV
mV
mV
mA
mA
mA
kΩ
ns
ns
ns
ns
V
V
V
IN
= 12V, unless otherwise noted.)
Conditions
I
R
V
V
V
V
V
V
-40°C < T
T
---
V
V
V
V
R
R
V
V
C
C
A
DD(ext)
A
T
DD
DD
IN
IN
IN
PWMD
LD
CS
LD
CS
T
T
GATE
GATE
GATE
GATE
< +125°C.
< +125°C
= 226kΩ, PWMD = V
= 1.00MΩ
= 226kΩ
= 8.0V
= 8.0 - 450V
= 8.0 - 450V
= V
= V
= V
= V
rising
falling
= 0V, V
= V
= 0 - 1.0mA, 500pF at GATE;
= 500pF, V
= 500pF, V
= 5.0V
DD
DD
CS,TH
CS,TH
DD
,
,
A
, V
< +85°C
+ 50mV after T
+ 50mV after T
DD
DD
= 7.5V
= 7.5V
DD
DD
= 7.5V
= 7.5V
HV9910B
DD
BLANK
BLANK