HV9919B Supertex, Inc., HV9919B Datasheet - Page 3

• Manufacturer Part Number: HV9919B
• Description: Hysteretic, Buck, High Brightness Led Driver With High-side Current Sensing
• Manufacturer: Supertex, Inc.

Electrical Characteristics
(V
Sense Comparator
DIM Input
Gate Driver
Over-Temperature Protection
Analog Control of PWM Dimming
IN
*
†
V
V
= 12V, V
∆T
V
I
V
Sym
CS(HYS)
V
T
GATE(LO)
V
t
T
GATE(HI)
f
t
I
Guaranteed by design and characterization, 100% tested at T
V
DPDH
t
T
RAMP
Guaranteed by design and characterization.
CS(LO)
DPDL
V
GATE
CS(HI)
V
t
I
OFF
RISE
HiGH
FALL
LOW
CS
ON
HYST
OT
OS
IH
IL
DIM
= V
Supertex inc.
Description
Sense voltage threshold high
Sense voltage threshold low
Propagation delay to output high
Propagation delay to output low
Current-sense input current
Current-sense threshold hysteresis
Pin DIM input high voltage
Pin DIM input low voltage
Turn-on time
Turn-off time
GATE current, source
GATE current, sink
GATE output rise time
GATE output fall time
GATE high output voltage
GATE low output voltage
Over temperature trip limit
Temperature hysteresis
Dimming frequency
RAMP threshold, Low
RAMP threshold, High
ADIM offset voltage
DD
, V
RAMP
= GND, C
VDD
= 1.0µF, R
†
●
†
1235 Bordeaux Drive, Sunnyvale, CA 94089
CS
= 0.5Ω, T
A
= T
V
J
A
= -40
= 25
DD
Min
213
158
128
130
550
2.2
0.3
0.7
1.8
-35
-
-
-
-
-
-
-
-
-
-
-
-
-0.5
O
O
C. Typical characteristics are given at T
C to +125
3
Typ
230
170
100
100
140
0.5
1.0
0.1
70
70
56
40
17
60
-
-
-
-
-
-
-
-
-
O
C* unless otherwise noted)
●
1250
Max
246
182
300
+35
1.0
0.7
0.5
2.1
70
55
25
Tel: [phone]
-
-
-
-
-
-
-
-
-
-
-
Units
mV
mV
mV
mV
µA
Hz
ºC
ºC
ns
ns
ns
ns
ns
ns
V
V
A
A
V
V
V
V
Conditions
(V
(V
Falling edge of
(V
Rising edge of
(V
(V
---
---
---
DIM rising edge to
V
DIM falling edge to
V
V
V
C
C
I
I
---
---
C
C
---
---
---
GATE
GATE
A
●
GATE
GATE
GATE
GATE
GATE
GATE
RAMP
RAMP
= 25
IN
IN
IN
IN
IN
www.supertex.com
- V
- V
- V
- V
- V
= 10mA
= -10mA
= 2.0nF
= 2.0nF
= 0.5 x V
= 0.5 x V
= GND
= V
O
= 47nF
= 10nF
C.
CS
CS
CS
CS
CS
) rising
) falling
) = V
) = V
) = 200mV
DD
RS(LO)
RS(HI)
DD
DD
, C
, C
HV9919B
+ 70mV
- 70mV
GATE
GATE
= 2.0nF
=2.0nF