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HV9985 Datasheet(PDF) 3 Page - Supertex, Inc

Part # HV9985
Description  Three-Channel, Closed-Loop, Switch Mode LED Driver IC
PDF  16 Pages
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Manufacturer  SUTEX [Supertex, Inc]
Direct Link  http://www.supertex.com
Logo SUTEX - Supertex, Inc

HV9985 Datasheet(HTML) 3 Page - Supertex, Inc

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HV9985
Supertex inc.
www.supertex.com
Doc.# DSFP-HV9985
C051513
Sym
Parameter
Min
Typ
Max Units Conditions
Input
V
INDC
Input DC supply voltage
*
10
-
40
V
DC input voltage
I
INSD
Shut-down mode supply current
*
-
-
200
μA
EN ≤ 0.8V
I
IN
Supply current
-
-
-
1.5
mA
EN ≥ 2.0V; PWMD1 = PWMD2 =
PWMD3 = GND
Internal Regulator
V
DD
Internally regulated voltage
*
4.75 5.00
5.25
V
V
IN = 10 - 40V; EN = HIGH;
PWMD1-3 = V
DD;
GATE1-3 = 2.0nF; CLK = 6.0MHz
UVLO
RISE
V
DD under voltage lockout threshold
-
4.25
-
4.75
V
V
DD rising
UVLO
HYST
V
DD under voltage hysteresis
-
-
250
-
mV
V
DD falling
Enable Input
V
EN(LO)
EN input low voltage
*
-
-
0.8
V
---
V
EN(HI)
EN input high voltage
*
2.0
-
-
V
---
R
EN
EN pull down resistor
-
50
100
150
kΩ
V
EN = 5.0V
PWM Dimming (PWMD1, PWMD2 and PWMD3)
V
PWMD(lo)
PWMD input low voltage
*
-
-
0.8
V
---
V
PWMD(hi)
PWMD input high voltage
*
2.0
-
-
V
---
R
PWMD
PWMD pull down resistor
-
50
100
150
kΩ
V
PWMD = 5.0V
Gate (GATE1, GATE2 and GATE3)
I
SOURCE
GATE short circuit current, sourcing # 0.25
-
-
A
V
GATE = 0V
I
SINK
GATE sinking current
#
0.5
-
-
A
V
GATE = VDD
T
RISE
GATE output rise time
*
-
-
85
ns
C
GATE = 2.0nF
T
FALL
GATE output fall time
*
-
-
45
ns
C
GATE = 2.0nF
D
MAX
Maximum duty cycle
#
-
91.7
-
%
---
Over Voltage Protection (OVP1, OVP2 and OVP3)
V
OVP,rising
Over voltage rising trip point
*
1.13 1.25
1.37
V
OVP rising
V
OVP,HYST
Over voltage hysteresis
-
-
125
-
mV
OVP falling
Current Sense (CS1, CS2 and CS3)
T
BLANK
Leading edge blanking
*
100
-
250
ns
---
T
DELAY
Delay to output of GATE
-
-
-
200
ns
100mV overdrive to the current
sense comparator
R
DIS
Discharge resistance for slope
compensation
*
-
-
100
Ω
GATE = Low
#
Denotes specifications guaranteed by design.
*
The specifications which apply over the full operating temperature range at 0OC < T
A < +85
O
C are guaranteed by design and characterization.
Electrical Characteristics (The * denotes the specifications which apply over the full operating ambient temperature range
0OC<T
A<+85
O
C, otherwise the specifications are at T
A = 25
O
C. V
IN = 24V, VDD1 = VDD2 = VDD3 = VDD unless otherwise noted.)



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