MIC4826YMM TR Micrel Inc, MIC4826YMM TR Datasheet - Page 7

• Manufacturer Part Number: MIC4826YMM TR
• Description: IC DRIVER EL DC-AC 160VPP 8MSOP
• Manufacturer: Micrel Inc
• Type: EL Lamp Driverr

Specifications of MIC4826YMM TR

• Frequency: 60 ~ 1000 Hz
• Current - Supply: 21µA
• Voltage - Supply: 1.8 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Driver Type: EL Lamp
• Operating Supply Voltage (typ): 1.8/2.5/3.3/5V
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Package Type: MSOP
• Pin Count: 8
• Mounting: Surface Mount
• Operating Supply Voltage (min): 1.8V
• Operating Supply Voltage (max): 5.5V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Lead Free Status / Rohs Status: Compliant
• Other names: 576-1226-2

EL Frequency
The EL lamp frequency is controlled via an external resistor
connected between REL pin and VDD pin of the device. As
the lamp frequency increases, the resistor value decreases.
For resistor value selections, see the “Typical Character-
istics: EL Frequency vs. EL Resistor” or use the equation
below. The EL frequency range is 60Hz to 1000Hz, with an
accuracy of ±20%.
March 2009
f
EL
(
Hz
Figure 3. 180Hz Output Waveform
)
=
R
EL
360
(
M
Ω
)
TIME (2ms/div)
V
L = 220µH
C
Lamp = 2in
R
R
IN
OUT
SW
EL
= 3.0V
= 1M
= 562k
= 0.01µF
2
7
of current drawn from the battery will increase. The color
of the EL lamp and the intensity are dependent upon its
frequency.
Enable Function
The enable function of the MIC4826 is implemented by switch-
ing the R
R
EL oscillators are disabled; therefore the EL driver becomes
disabled. When these resistors connect to V
In general, as the EL lamp frequency increases, the amount
SW
and R
SW
Figure 4. 360Hz Output Waveform
EL
and R
are connected to ground, the switch and the
EL
resistor between ground and V
TIME (2ms/div)
DD
, both oscilla-
DD
V
L = 220µH
C
Lamp = 2in
R
R
MIC4826
IN
OUT
SW
EL
= 3.0V
. When
= 1M
= 562k
= 0.01µF
2