Micrel
MIC4830
Absolute Maximum Ratings
(1)
Supply Voltage (V
DD
)...................................... –0.5V to 6.0V
Output Voltage (V
CS
) ..................................... –0.5V to 120V
EL Lamp Terminals (V
A
, V
B
)................................... V
CS
+ 3V
Switch Voltage (Vsw)…………………………..-0.5V to 120V
Frequency Control Voltage
(V
RSW
,
V
REL
) .................................... –0.5V to (V
DD
+0.3V)
Storage Temperature (T
S
).........................–65°C to +150°C
ESD Rating
(4)
............................................................... 1.5kV
Operating Ratings
(2)
Supply Voltage (V
DD
).................................... +1.8V to +5.5V
Lamp Drive Frequency (f
EL
) ....................... 60Hz to 1000Hz
Switching Frequency (f
SW
).........................65kHz to 250kHz
Ambient Temperature (T
A
) .......................... –40°C to +85°C
Package Thermal Resistance
(3)
MSOP (
θ
JA
) ......................................................206°C/W
MLF
®
(
θ
JA
)..........................................................63°C/W
Electrical Characteristics
(5)
V
IN
= V
DD
= 3.0V, R
SW
= 332KΩ, R
EL
= 1.78MΩ. T
A
= 25°C unless otherwise specified.
Bold
values indicate
–40°C
≤
T
A
≤
+85°C.
Parameter
On-resistance
CS Voltage Variation
Enable Input Low
Voltage (turn-off)
Enable Input High
Voltage (turn-on)
Shutdown current
Input supply current
Condition
I
SW
= 100mA
V
DD
= 1.8V to 5.5V
V
DD
= 1.8V to 5.5V
V
DD
= 1.8V to 5.5V
R
SW
Resistor = LOW; R
EL
Resistor = LOW; V
DD
= 5.5V
R
SW
Resistor = HIGH;
R
EL
Resistor = HIGH;
V
CS
= 90V; V
A
, V
B
OPEN
Input current including
inductor
V
A
– V
B
output drive
frequency
Switching transistor
frequency
Switching transistor duty
cycle
Notes:
1. Exceeding the absolute maximum rating may damage the device.
2. The device is not guaranteed to function outside its operating rating.
3. The maximum allowable power dissipation of any T
A
(ambient temperature) is P
D(max)
= (T
J(max)
– T
A
) /
θ
JA
. Exceeding the maximum allowable power
dissipation will result in excessive die temperature.
4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
5. Specification for packaged product only.
Min
76
Typ
3.8
88
Max
7
99
0.5
Units
Ω
V
V
V
V
DD
-
0.5
0.01
45
0.5
75
µA
µA
V
IN
= V
DD
= 3.2V; R
SW
= 290KΩ; R
EL
= 1.78MΩ;
L=220µH; R
OUT
= 10kΩ; Lamp = 2in
2
R
EL
=1.78MΩ
R
SW
= 332KΩ
158
90
15
200
112
90
242
134
mA
Hz
kHz
%
July 2009
3
M9999-070709-C
MICREL [ MICREL SEMICONDUCTOR ]
