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Supertex

HV9967B Datasheet Preview

HV9967B Datasheet

Integrated LED Driver

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Supertex inc.
Integrated LED Driver
with Average-Mode Current Control
HV9967B
Features
3% accurate LED current
Integrated 60V, 0.8Ω MOSFET
Low sensitivity to external component variation
Single resistor LED current setting
Fixed off-time control
PWM dimming input
Output short circuit protection with skip mode
Over-temperature protection
Available in compact 8-Lead MSOP and 8-Lead
DFN packages
Applications
DC/DC or AC/DC LED drivers
RGB backlighting drivers for flat panel displays
General purpose constant current source
Signage and decorative LED lighting
Chargers
General Description
The HV9967B is an average-mode current control LED driver IC
operating in a constant off-time mode.
The IC features an integrated 60V, 0.8Ω MOSFET that can be
used as a stand-alone buck converter switch, or connected as a
source driver for driving an external high-voltage depletion-mode
MOSFET. The HV9967B is powered through its switching output
when the integrated switch is off. Hence, the same external
MOSFET can be used as a high-voltage linear regulator for
powering the IC.
The LED current is programmed with one external resistor. The
average-mode current control method does not produce a peak-
to-average error, and therefore greatly improves current accuracy
and line and load regulation of the LED current without any need
for loop compensation or direct sensing of the LED current at a
high-voltage potential. The auto-zero circuit cancels the effects of
the input offset voltage and of the propagation delay of the current
sense comparator.
Typical Application Circuit
8.0 - 60VDC
+
CIN
RSENSE
U1
4
PWMD
1
SW
HV9967B
2
RSENSE
8
VDD
PGND AGND RT
37 6
RT
D1 CO
L1
CDD
Doc.# DSFP-HV9967B
B060712
LED
String
Supertex inc.
www.supertex.com




Supertex

HV9967B Datasheet Preview

HV9967B Datasheet

Integrated LED Driver

No Preview Available !

Ordering Information
Part Number
Package Options
HV9967BK7-G
8-Lead DFN (3x3mm)
HV9967BMG-G 8-Lead MSOP
-G indicates package is RoHS compliant (‘Green’)
Packing
3000/Reel
2500/Reel
HV9967B
Pin Configurations
SW 1
8 VDD
RSENSE 2
PGND 3
PWMD 4
GND
7 AGND
6 RT
5 NC
8-Lead DFN (K7)
(top view)
Absolute Maximum Ratings*
Parameter
Value
SW to GND
-0.5V to +65V
VDD to GND
-0.3V to 6.0V
Other I/O to GND
RT, ISET
Continuous power dissipation (TA = +25°C)
8-Lead DFN (K7)
8-Lead MSOP (MG)
-0.3V to (VDD + 0.3V)
2.0mA
1.6W
350mW
Junction temperature
-40°C to +150°C
Storage temperature range
-65°C to +150°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in
the operational sections of the specifications is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Typical Thermal Resistance
Package
θja
8-Lead DFN
37OC/W
8-Lead MSOP
216OC/W
SW 1
RSENSE 2
8 VDD
7 AGND
PGND 3
6 RT
PWMD 4
5 NC
8-Lead MSOP (MG)
(top view)
Product Marking
H67B
YWLL
Y = Last Digit of Year Sealed
W = Code for Week Sealed
L = Lot Number
= “Green” Packaging
Package may or may not include the following marks: Si or
8-Lead DFN (K7)
Top Marking
967B
LLLL
Bottom Marking
YYWW
L = Lot Number
YY = Year Sealed
WW = Week Sealed
= “Green” Packaging
Package may or may not include the following marks: Si or
8-Lead MSOP (MG)
Electrical Characteristics
(The *
25°C.
denotes specifications
VSW = 10V/10mA, VDD
which apply over the full
= 5.0V unless otherwise
operating
noted)
ambient
temperature
range
of
-40°C
<
TA
<
125°C.
Otherwise specifications are at TA =
Sym Description
Min Typ Max Units Conditions
Input
VSWDC Input DC supply voltage range
* 8.0 - 60
IINSD Shut-down mode supply current
- - 0.5 1.0
Notes:
# Not production tested; guaranteed by design or characterization.
* Specifications apply over the full operating ambient temperature range of -40°C < TA < +125°C.
V
mA
DC input voltage
Pin PWMD to GND
Doc.# DSFP-HV9967B
B060712
Supertex inc.
2 www.supertex.com


Part Number HV9967B
Description Integrated LED Driver
Maker Supertex
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HV9967B Datasheet PDF






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