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HV833 の電気的特性と機能

HV833のメーカーはSupertex Incです、この部品の機能は「High Voltage EL Lamp Driver」です。


製品の詳細 ( Datasheet PDF )

部品番号 HV833
部品説明 High Voltage EL Lamp Driver
メーカ Supertex Inc
ロゴ Supertex  Inc ロゴ 




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HV833 Datasheet, HV833 PDF,ピン配置, 機能
Supertex inc.
HV833
High Voltage
EL Lamp Driver
Features
►1.8 to 6.5V operating supply voltage
►DC to AC conversion
►Separately adjustable lamp and converter
frequency
►Output voltage regulation
►Enable/disable function
Patented output timing for high efficiency
►<100nA shutdown current
►Split supply capability
►LCD backlighting
Applications
►Portable transceivers
►Remote control units
Calculators
PDAs
►Global Positioning Systems (GPS)
General Description
The Supertex HV833 is a high voltage driver designed for driving EL
lamps of up to 35nF (10-12in2). The input supply voltage range is from
1.8 to 6.5V. The device uses a single inductor and a minimum number
of passive components. The nominal regulated output voltage that is
applied to the EL lamp is ±90V. The chip can be enabled/disabled by
connecting a resistor between the RSW-Osc pin and the VDD/GND
pins.
The HV833 has two internal oscillators, a switching MOSFET, and a
high voltage EL lamp driver. The frequency for the switching MOSFET
is set by an external resistor connected between the RSW-Osc pin
and the VDD supply pin. The EL lamp driver frequency is set by an
external resistor connected between the REL-Osc pin and the VDD
pin. An external inductor is connected between the LX pin and VDD
or VIN pin. A 0.003-0.1µF capacitor is connected between the CS pin
and the GND pin. The EL lamp is connected between the VA pin and
the VB pin.
The switching MOSFET charges the external inductor and discharges
it into the capacitor at CS. The voltage at CS will start to increase.
Once the voltage at CS reaches a nominal value of 90V, the switching
MOSFET is turned OFF to conserve power. The outputs VA and VB
are configured as an H bridge and are switching in opposite states to
achieve 180V peak-to-peak across the EL lamp.
Typical Application Circuit
ON = VDD
OFF = 0
VDD
Enable Signal
+
_VIN
1 VDD
VA 8
2 RSW-Osc VB 7
3 REL-Osc CS 6
4 GND
LX 5
HV833
1N914
LX
EL Lamp
CS
100V
Doc.# DSFP-HV833
A061813
Supertex inc.
www.supertex.com

1 Page





HV833 pdf, ピン配列
Enable/Disable Function Table
Sym Parameter
EN-L Logic input low voltage
EN-H Logic input high voltage
HV833
Min Typ Max Units Conditions
0 - 0.5 V VDD = 1.8 to 6.5V
VDD - 0.5 - VDD V VDD = 1.8 to 6.5V
Functional Block Diagram
VDD
RSW-Osc
Switch
Osc
Q
GND
Disable
+
C_
VREF
VSEN
Q
Output
Osc
LX
CS
VA
REL-Osc
Q
VB
Q
Doc.# DSFP-HV833
A061813
Supertex inc.
3 www.supertex.com


3Pages


HV833 電子部品, 半導体
Fig. 3: Typical Application
ON = VDD
OFF = 0
Enable Signal
750k
+
VIN = VDD_
4.7µF
1.0M
VDD = VIN = 3.0V
1 VDD
VA 8
2 RSW-Osc VB 7
3 REL-Osc CS 6
4 GND
LX 5
HV833
Typical Performance
Device
Lamp Size
HV833MG
3.0in2
*LX = 560µH Murata LQH43MN561K01
VIN
3.0V
IIN
20mA
VCS
60V
HV833
EL Lamp
3.0in2
1N914
LX*
560µH
0.01µF
100V
fEL
440Hz
Brightness
4.0ft-Im
TA
-25OC to + 85OC
Typical Performance Curves for Fig. 3 (EL Lamp = 3.0in2, VIN = VDD)
IIN, VCS, Brightness vs. Inductor Value
90
10
80 9
70 8
60 7
VCS
50 6
40
Brightness
30
5
4
20
IIN
10
3
2
0
100 200 300 400
500 600
1
700 800 900 1000
Inductor Value (H)
VCS vs. VIN
90
80
70
60
50
40
30
1.0 2.0 3.0 4.0 5.0 6.0 7.0
VIN (V)
10 Brightness vs. VIN
8
6
4
2
01.0 2.0 3.0 4.0 5.0 6.0 7.0
VIN (V)
25
20
15
10
5
1.0
25
20
15
10
5
30
IIN vs. VIN
2.0 3.0 4.0 5.0 6.0 7.0
VIN (V)
IIN vs. VCS
40 50 60 70 80 90
VCS (V)
Doc.# DSFP-HV833
A061813
Supertex inc.
6 www.supertex.com

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
HV830

High Voltage EL Lamp Driver

Supertex  Inc
Supertex Inc
HV832

High Voltage Dual EL Lamp Driver

Supertex  Inc
Supertex Inc
HV833

High Voltage EL Lamp Driver

Supertex  Inc
Supertex Inc


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