MIC4830 Datasheet, PDF (3/12 Pages) Micrel Semiconductor – Low Noise 180Vp-p EL Driver

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 (VA, VB) ................................. V_CS + 3V
Switch Voltage (Vsw)…………………………..-0.5V to 120V
Frequency Control Voltage
(V_RSW, V_REL) ................................... –0.5V to (VDD+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^®-8L (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
Condition
Min Typ Max Units
On-resistance
CS Voltage Variation
Enable Input Low
Voltage (turn-off)
I_SW = 100mA
V_DD = 1.8V to 5.5V
V_DD = 1.8V to 5.5V
3.8
7
Ohm
76 88
99
V
0.5
V
Enable Input High
Voltage (turn-on)
V_DD = 1.8V to 5.5V
V_DD-
0.5
V
Shutdown current
Input supply current
Input current including
inductor
RSW Resistor = LOW; R_EL Resistor = LOW; V_DD = 5.5V
RSW Resistor = HIGH;
REL Resistor = HIGH;
V_CS = 90V; VA, VB OPEN
VIN = VDD = 3.2V; Rsw = 290KΩ; Rel = 1.78MΩ;
L=220µH; Rout=10kΩ; Lamp = 2in²
0.01 0.5
µA
µA
45
75
15
mA
VA–VB output drive
frequency
R_EL=1.78MΩ
158 200 242
Hz
Switching transistor
frequency
R_SW=332KΩ
90 112 134 kHz
Switching transistor
duty cycle
90
%
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.
September 2007
3
M9999-091307
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