HV9925 Supertex, Inc., HV9925 Datasheet - Page 3

• Manufacturer Part Number: HV9925
• Description: Programmable-current Led Lamp Driver Ic With Pwm Dimming
• Manufacturer: Supertex, Inc.

Electrical Characteristics
Functional Block Diagram
Current Sense Comparator
Off-Time Generator
PWM Dimming
Thermal Shutdown
Notes:
V
V
T
T
R
*
# Denotes guaranteed by design.
T
Sym
PWMD,LO
PWMD,HI
ON(MIN)
T
V
T
BLANK
PWMD
HYST
OFF
TH
OT
Denotes the specifications which apply over the full operating ambient temperature range of -40°C < T
Threshold voltage
Leading edge blanking delay
Minimum on time
Off time
PWMD input high voltage
PWMD input low voltage
PWMD pull down resistance
Over temperature trip limit
Temperature hysteresis
Parameter
(cont.) (The specifications are at T
#
#
#
- 0.435
-
-
-
-
-
Min
200
100
8.0
2.0
-
-
-
-
3
0.470
Typ
10.5
300
200
140
60
-
-
-
A
= 25°C and V
0.525
Max
400
650
300
0.8
13
-
-
-
DRAIN
Units
kΩ
μs
°C
°C
ns
ns
V
V
V
= 50V, unless otherwise noted.)
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V
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Conditions
A
PWMD
< +85°C.
= 5.0V
HV9925